2024-03-28T12:42:17Z
https://journal.ugm.ac.id/index/oai
oai:jurnal.ugm.ac.id:article/2346
2013-07-30T07:18:01Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2346
2013-07-30T07:18:01Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
THE UTILIZATION OF SEA WATER IN A ESPECIALLY DESIGNED BATTERY (SABRINE SWALL BATTERY)
-, Mursyidah; Dinas Pertambangan & Energi, Kab.Lebong, Bengkulu
Susanto, Adhi; Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada
BS, Isnaeni; Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada
2013-07-30 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2346
batteries; Sea Water; electrolyte
en
Batteries are chemical devices to save electricity. device capable of generating a DC voltage, ie by converting chemical energy contained in it into electrical energy through the reaction of electro clams, Redox (Reduction - Oxidation). The battery consists of several cells, these cells become energy storage in the form of chemical energy. Negative electrode called the cathode, which serve as electron donors. Positive electrode called the anode which serves as an electron acceptor. Between the anode and the cathode current will flow from the positive pole (anode) to the negative pole (cathode). While the electrons will flow from ktoda toward the anode.In this study, the batteries are designed to use sea water as electrolyte. Voltage measured for one cell is 0,75 Volt and measurable current of 100mA, to get the required voltage is 10 Volts 15 cells arranged in series. Testing is done by loading a flashlight with 5 LED, the results of this special design battery capable of powering 5 LED for seven days without stopping, this suggests that there are large energy stored in batteries. After charging the battery energy runs out of energy again just by replacing the sea water as electrolyte. These batteries are designed to be placed in the beach area and waterfront, it is intended that the sea water needs as the electrolyte can be easily obtained. The especially designed battery is one of the low technology and easy to be made, because the necessary materials readily available in the manufacture of batteries, the battery does not require extra maintenance, environmentally friendly and can be used for twenty-four hours as long as there is sea water.
oai:jurnal.ugm.ac.id:article/2348
2013-07-30T07:18:01Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2348
2013-07-30T07:18:01Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
PEMANFAATAN LIMBAH INDUSTRI BATU APUNG UNTUK PEMBUATAN BATU HIAS BANGUNAN
Hargianto, Arifin; SMK N 2 Kuripan, Lombok Barat, Nusa Tenggara Barat
Satyarno, Iman; Jurusan Teknik Sipil dan Lingkungan, Fakultas Teknik, Universitas Gadjah Mada
-, Mudjijana; Jurusan Teknik Mesin dan Industri, Fakultas Teknik, Universitas Gadjah Mada
2013-07-30 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2348
Decorative Stones; Pumice Waste; Mortar
id
Mining and processing activities have caused pumice deposits of waste. Waste from industrial processing of pumice is used as an innovation to increase the value of the waste and then profits will be obtained. One of the examples is making them as decorative stones.Raw materials used in this study are industrial waste pumice from Lombok, with the size less than 2 cm. The machine used as a fine aggregate pumice waste destruction is a crusher. Variations of the composition of the mixed mortar are made from white cement, powdered pumice waste as fine aggregate, and water. Variation is the comparison between the composition of the mixture of white portland cement (pc) and fine aggregate from pumice waste (Ag.h) with comparisons 1Pc: 2Ag.h, 1Pc: 4Ag.h, 1Pc: 6Ag.h, 1Pc: 8Ag.h and 1Pc: 10Ag.h. Tests are conducted to determine the characteristics of fine aggregate made from pumice waste, while the mortar test includes compressive strength, flexural strength, specific gravity and water absorption.The results show that the fine aggregate made from pumice industrial waste materials has the following characteristics : modulus of fine grains is 2.61, specific gravity is 1.67, absorption of water is 23.08%, mud content is 26.10%, and weight lose unit is 0.537 gr/cm3. On the mortar test, mixed variations affect the compressive strength, flexural strength, specific gravity and water absorption. The test results find that the variation of a mixture of 1 pc: 2 Ag.h has characteristics of natural stone that is the closest to the gravity of 262 gr/cm and with 3,11 813 MPa in compressive strength, 0344 MPa in flexural strength, and 19.93% in water absorption value. Variation of a mixture of 1 pc: 2 Ag.h has also been tested in the manufacture of decorative stones and the results can have the similar look with the natural stone.
oai:jurnal.ugm.ac.id:article/2349
2013-07-31T07:32:56Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2349
2013-07-31T07:32:56Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
PENGARUH KOMBINASI LAPISAN PAPAN PARTIKEL DARI LIMBAH PARTIKEL AREN (Arenga pinnata) DAN LIMBAH SERUTAN BAMBU (Dendrocalamus asper) DENGAN JUMLAH PEREKAT UREA FORMALDELHIDA TERHADAP SIFAT PAPAN PARTIKEL
Sonjaya, Muhammad Lutfi; Fakultas Teknik, Universitas Gadjah Mada
Haryanto, Iman; Sekolah Vokasi, Universitas Gadjah Mada
-, Kusnanto; Jurusan Teknik Fisika, Fakultas Teknik, Universitas Gadjah Mada
2013-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2349
Board Particle; Sugar Palm Waste; Bamboo Waste; Urea Formaldehyde
id
The need of wood for lumber industry in indonesia has got deficit over increasing population that make demand increase dramatically. One of effort that we could do is to find an alternative of wood like make particle board. Sugar palm waste and bamboo waste can be usde as board particle sources because it contains sellulose, hemisellulose and lignin as element of wood structure. The objective of this research is to find out the effect of urea formaldehyde addition and combination of layered particle from aren waste particle and bamboo waste shaving to the properties of particle board.Research methodology was completely randomized design with two factors. The first factor has three kind treatment were combination layered board particle with ratio face (sugar palm) : core (bamboo) : face (sugar palm) are 10%:80%:10%(K1), 20%:60%:20%(K2), 30%:40%:30%(K3). Second factor has three kind treatment were amount of adhesicve 5% (P1), 10%(P2) and 15%(P3). Parameter of property test were density, water absorption, thickness swelling, internal bonding, modulus of rupture and modulus of elasticity with using SNI 03-2105-2006.The research showed that particle layered composition factor affects significantly to internal bonding and modulus of elasticity but it doesn’t effect significantly to density, water absorption, thickness swelling and modulus of rupture. Meanwhile, adhesive factor affects significantly to all of property test. The best particle board made from combination layered arrangement 10% face : 80% core : 10% face (K1) with amount of adhesive 15% (P3). It has the best property as density 0,77 g/cm3, thickness swelling 22,84%, water arsoption 59,79%, internal bonding 3,56 kgf/cm2, modulus of rupture 182,48 kgf/cm2 and modulus of elasticity 16.352,9 kgf/cm2. Based on SNI 03-2105-2006, the properties test that had fullfilled were density, modulus of rupture and internal bonding but for water absorption, thickness swelling and modulus elasticity has not fullfill yet.
oai:jurnal.ugm.ac.id:article/2350
2013-07-31T07:32:56Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2350
2013-07-31T07:32:56Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
ISOLASI, IDENTIFIKASI DAN PEMURNIAN SENYAWA 1,8 SINEOL MINYAK KAYU PUTIH (Malaleuca leucadendron)
Helfiansah, Rizqi; Dinas Perindagkop, Kab. Sumbawa, Nusa Tenggara Barat
Sastrohamidjojo, Hardjono; Jurusan Kimia, Fakultas MIPA, Universitas Gadjah Mada
-, Riyanto; Jurusan Kimia, Fakultas MIPA, Universitas Islam Indonesia
2013-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2350
Cajuput; Distillation Method; Yield; Fractination; 1.8 cineol
id
Cajuput oil is one of the essential oils that widely used as materials for medical or pharmaceutical products, this makes the cajuput oil become the most wanted products in essential oils industries. Cajuput oil demand is currently increasing with the growing variety of utilization of cajuput oil. Cajuput oil productions in Indonesia run into fluctuations and tend to decrease. There are several factors that affect production and quality of cajuput oil, and one of them is distillation technique. Moreover fractionation or isolation of the 1,8-cineol compound also have not been done by the cajuput oil entrepreneurs, whereas this is important in order to use 1.8 cineol compound further.Distillation of cajuput leaves is done by three distillation methods, namely water distillation, water steam distillation and steam distillation. Calculating the yield after cajuput oil obtained and then testing the physical and chemical properties of cajuput oil in accordance with the Indonesia National Standard (SNI 06-3954-2006). And then doing fractionation of cajuput oil to obtain at least 85% 1,8 Cineol compound. The results showed that water steam distillation method produces the highest yield, the yield is 2.5%, followed by water distillation method, the yield is 1.8% and then steam distillation method, the yield is 1.5%. Physical and chemical properties that exist on cajuput oil that produced by water and steam distillation method and steam distillation method are appropriate with the Indonesia National Standard. After doing fractination processes for two time, the fractination process produced 1.8 cineol compound 79.90% in first fraction, 87.90% at second fraction and then 89.78% at third fraction.
oai:jurnal.ugm.ac.id:article/2352
2013-07-31T07:32:56Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2352
2013-07-31T07:32:56Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
STUDI PERBANDINGAN PERLAKUAN BAHAN BAKU DAN METODE DISTILASI TERHADAP RENDEMEN DAN KUALITAS MINYAK ATSIRI SEREH DAPUR (Cymbopogon citratus)
-, Slamet; SMKN Kelautan, Lembar, Nusa Tenggara Barat
-, Supranto; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
-, Riyanto; Jurusan Ilmu Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Islam Indonesia
2013-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2352
Essential Oil; Lemongrass; Distillation; Yield
id
Indonesia is rich in plant biodiversity. Indonesia volatile oil development efforts through increased development of one plant of lemon grass, which is one of the essential oil producing plants known as Cymbopogon citratus. Lemongrass essential oil in the chemical industry used as raw materials in the manufacture of cosmetics, perfume, deodorant, deodorant soap, floor cleaners and detergents.The purpose of this study was to determine the highest yield of lemongrass essential oil distillation using the method of water distillation, water-steam, and steam to the treatment of intact leaves and chopped leaves and know the quality of essential oil of lemongrass with the treatment of raw materials and different methods of distillation, the design used by two factors: variation in the treatment of raw material (whole leaves and chopped leaves) and the distillation process variation (distilled water (boiled), water-steam distillation and steam distillation. Data obtained from the analysis of yield, specific gravity, refractive index, and oil content of the compound citral essential (lemongrass oil).This study uses three methods of distillation, the distillation of water, water-steam distillation and steam distillation is carried out on samples of intact leaves and chopped leaves of fresh lemongrass. The results yield calculation and testing of physics and chemistry, as well as in the method of analysis SPSS One-Sample Test Statistics for the lemongrass essential oil products.Based on the results of research on the treatment of raw materials and distillation methods can be concluded that the treatment of raw materials lemongrass intact leaves with water distillation method (boiled) at both the content yield 0.52%, 71.84% citral, specific gravity 0.8967 g/mL, and the refractive index of 1.4905. It is appropriate to mention that SNI 06-39-53-1995 yield 0.3%, the specific gravity of 0.8731 g/mL, and the refractive index of 1.4586. But the content of citral not meet SNI standards are 76.1%, but according to Guenther (2006) which states citral content of between 65% to 85%.
oai:jurnal.ugm.ac.id:article/2353
2013-07-31T07:32:56Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2353
2013-07-31T07:32:56Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
PEMANFAATAN ZEOLIT DIAKTIFKAN DENGAN LARUTAN ASAM UNTUK PEMURNIAN BIODIESEL
Furqon, Muhammad Hidayat; Fakultas Teknik, Universitas Gadjah Mada
Prasetya, Agus; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
Wilopo, Wahyu; Jurusan Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada
2013-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2353
Biodiesel; Pemurnian; Zeolit; Aktivasi
id
Utilization of zeolite activated by acid solution for biodiesel purification has been done. This research is conducted to find the mechanism of biodiesel purification from catalyst with activated zeolite, the effectiveness of the activated zeolite of various particle size, soaking time and purification temperature, the economic feasibility of biodiesel production by using this method and the more economical method by comparing the cost and performance of biodiesel purification using activated zeolite and using water and acid solution.This research has used cooking oil, methanol and sodium hydroxide to make biodiesel, sulfuric acid as activator and zeolite from Gunung Kidul which is filled into wash column with support from vacuum pump to purify biodiesel. The variable of the research is particle size of zeolite among others: 12 mesh <De< 20 mesh, 20 mesh <De< 40 mesh and 40 mesh <De< 80 mesh, soaking time 0, 15 minutes, 30 minutes, 1 hour and 2 hours, and purification temperature 27oC, 40oC and 60oC.Mechanism of activated zeolite for purifying biodiesel from catalyst has been investigated that activated zeolite is using the absorption rate where catalyst will fill the empty pores of zeolite and its cation exchange capacity where it will exchange cation in zeolite surface with cation of catalyst so that zeolite can purify the unwashed biodiesel from catalyst. Optimization of biodiesel purification using zeolite activated by acid solution method can be achieved with particle size of the zeolite 20 mesh <De< 40 mesh, 30-minute soaking time and purification temperature at 27oC. Economic analysis of the use of zeolites in the optimum condition within one year resulted Payback Period 8.68 months, Benefit Cost Ratio 1.86, Net Present Value Rp 431,173,257.44 and Return of Investment -138 % and the use of zeolite activated by acid solution more economical than the use of water and acid solution as purifying biodiesel because of cost savings can be made up to 86% of method of using water and acid solution.
oai:jurnal.ugm.ac.id:article/2354
2013-07-31T07:32:57Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2354
2013-07-31T07:32:57Z
ASEAN Journal of Systems Engineering
Vol 1, No 1 (2013): ASEAN Journal of Systems Engineering
MICROCONTROLLER BASED HYDROGEN SULFIDE (H2S) MONITORING IN BIOGAS SYSTEM
Yuniarti, Diah; Kementerian Komunikasi dan Informatika, Jakarta
-, Sarjiya; Jurusan Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada
Pertiwiningrum, Ambar; Jurusan Ilmu Hewan dan Industri, Fakultas Peternakan, Universitas Gadjah Mada
2013-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2354
Biogas; H2S concentration; microcontroller AVR 8535; adsorption model
en
Energy issue, particularly related to fossil fuel, is one the main issues today. Biogas is a new and renewable energy issued in National Research Agenda (ARN) 2010-2014 to overcome the energy crisis problem. A so called purification process is used to remove contaminants in biogas, including H2S in order to improve the standard requirement of biogas application. In this research, H2S concentration in biogas system is measured and monitored by H2S monitoring system.The hardware system comprises of piping and microcontroller AVR 8535 systems while the software system comprises of codes written in Delphi 7.0 and Code Vision AVR Eval. The result of the system is displayed on LCD or computer to enable the monitoring process by operator. The monitoring of H2S sensor responses will be carried out for recycled BFA size of 60+100 mesh and -200 mesh.Experiment has been conducted for sensor warming up time and response time for H2S and CH4 sensor, calibration process for H2S sensor and filter column. Based on sensor calibration experiment, transfer function of TGS825 sensor from calibration is y = 0.0203x + 27.153. The best adsorption model which represents BFA adsorption of biogas from tofu waste in the research is Thomas model.
oai:jurnal.ugm.ac.id:article/2377
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2377
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
HIGH THROUGHPUT STUDIES OF HYDROGEN EVOLUTION ELECTROCATALYST FOR WATER ELECTROLYSIS
Putri, Radwinda Kurnia; Fakultas Teknik, Universitas Gadjah Mada
Hayden, Brian; Chemistry Department, University of Southampton
Prasetya, Agus; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
-, Sihana; Jurusan Teknik Fisika, Fakultas Teknik, Universitas Gadjah Mada
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2377
HT PVD; Pt/TiO2; Hydrogen Evolution Reaction
en
This thesis presents a study of hydrogen evolution electrocatalyst for alkaline water electrolysis. Hydrogen production through the electrolysis of water requires the development of new electrocatalysts in order to reduce the hydrogen evolution over-potential of the cathode in order to make water electrolysis more competitive and efficient. An alternative approach in the optimisation of water splitting electrocatalyst may Be the modification of the metal electrocatalytic behaviour by supporting nano-particles on oxide support. Development of the electrocatalyst material for hydrogen evolution reaction in alkaline electrolyte may obtain more stable hydrogen evolution reaction.Pt on TiO2 electrocatalyst has been synthesized by applying high throughput Physical Vapor Deposition (HT PVD) method. Electrochemistry measurements of Pt on TiO2 have been used to study the characteristic and stability of the electrocatalyst for hydrogen evolution reaction in alkaline electrolyte for water electrolysis. XRD confirmed that the phase of TiO2 were amorphous and anatase after annealing for 6 hours at the temperature of 450oC. The thicknesses of TiO2 both for amorphous and anatase were 200 nm.Similar electrocatalytic behavior are presented both for Pt on amorpous TiO2 and Pt on anatase TiO2 from electrochemistry measurements using cyclic voltammetry and potential step on the 10 x 10 E-chem arrays in alkaline electrolyte (0.5 M NaOH). Higher currents are seen in the larger particle size of platinum in TiO2 both for amorphous and anatase phase. The hydrogen evolution reaction starts at the potential below -0.8 V vs RHE. The potential for hydrogen evolution reaction is shifted to the low potential. Larger particle size of platinum shows lower potential of hydrogen evolution reaction.Pt on TiO2 tends to be a stable electrocatalyst for hydrogen evolution reaction in alkaline water electrolysis. It is because hydrogen evolution reaction occurs at low potential. Anatase phase of TiO2 is more stable than amorphous TiO2, hence, Pt on anatase TiO2 could be better than Pt on amorphous TiO2 for hydrogen evolution reaction in alkaline water electrolysis.
oai:jurnal.ugm.ac.id:article/2378
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2378
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
TESTING OF POLONITE, GAZOBETON, PAREPARE BLACK VOLCANIC SAND BEACH, AND KADIDIRI CORAL BEACH SAND FOR PHOSPHORUS REMOVAL FROM WATER AND WASTEWATER IN CONSTRUCTED WETLAND
Kartikasari, Dian Dwi; Fakultas Teknik, Universitas Gadjah Mada
-, Supranto; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
-, Rochmadi; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2378
Batch experiment; Box experiment; Phosphorus removal; Sorbent material
en
Characteristics of domestic wastewater in Indonesia generally contain phosphorus 4-15 mg/L. Phosphorus in wastewater must be treated to reduce the phosphorus content according to the Indonesia: Government Regulation No. 82/2001 management of water quality and control over water pollution, maximum allowable levels is 0.2 mg/L. A 1953 report from the Max Planck Institute in Germany by Dr. Kathe Seidal discusses the possibility of using wetland plants to remove nutrients from wastewater. The objectives of this research are to ascertain whether Polonite, Gazobeton, Parepare black volcanic sand beach and Kadidiri coral beach sand can be used as sorbent materials and to obtain the data of phosphorus sorption capacity, efficiency and phosphorus adsorption capacity constant of those materials. This research consists of batch and box experiment. Batch experiment was conducted for all material by mechanically shaking sample for several minutes with varying concentrations of the artificial phosphorus solution prepared from KH2PO4 and wastewater. Box experiment was conducted to evaluate the phosphorus removal by Gazobeton in long term experiment. The highest sorption capacity was attained by polonite 0.917 g/Kg, was followed by gazobeton 0.504 g/Kg, Parepare black volcanic sand beach 0.174 g/Kg and then the finally Kadidiri coral beach sand 0.131 g/Kg. The phosphorus sorption efficiency by Polonite, Gazobeton, Parepare black volcanic sand beach and Kadidiri coral beach sand each Kg are 91%, 50%; 17% and 13% respectively. Phosphorus adsorption capacity constant of polonite is 4906 L/g gazobeton is 115 L/g Parepare black volcanic sand beach is 19 L/g and Kadidiri coral beach sand is 14 L/g
oai:jurnal.ugm.ac.id:article/2441
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2441
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
URBAN WATERFRONT SUSTAINABLE MANAGEMENT WITHIN LIFE CYCLE ANALYSIS Case: South European Cities
Astuti, Zulaikha Budi; Fakultas Teknik, Universitas Gadjah Mada
Kusumawanto, Arif; Dept. of Architecture, Faculty of Engineering, Universitas Gadjah Mada
Wilopo, Wahyu; Dept of Geology, Faculty of Engineering, Universitas Gadjah Mada
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2441
life cycle analysis; model; urban waterfront area; behavior of urban plan-process; monitoring; sustainable; success key factors
en
This research develops a monitoring tool for urban plan-process based on Life Cycle Analysis by Lourenço. A special project of urban waterfront revitalization is proposed as a contribution to legitimize the LCA model. This research also proposes the influence and the success key factors of its behavior plan-process.The model is tested through benchmarking for six waterfront cities in South Europe. Bilbao in Spain, Genoa in Italy, and Lisbon in Portugal are considered as the success projects since the urban strategy has a strong link with the urban waterfront area notified by the high intensity of the cycle for each phase. Porto and Viana do Castelo in Portugal are considered as the success projects which have a similar behavior for the action and living phase which might be due to the same project under national policy and the projects touch economic and social opportunity of the people. Aveiro in Portugal shows rupture in the beginning, followed by high intensity in the next period which has similar behavior with ideal behavior of LCA model.This research shows the applicability of LCA Model to monitor waterfront revitalization projects and enables the discussion of conceptual issues related to the legitimizing of LCA and the present contribution. The behavior of urban waterfront area and the time dimension can be monitored and the influenced factors of the behavior can be noticed with the success key factors, those are: Planning: does the urban waterfront become the focus of the city planning? Action: does the project persistence in the design proposal? andLiving: does the urban waterfront touch social, culture and economic of the people activities?.
oai:jurnal.ugm.ac.id:article/2442
2014-01-29T02:02:44Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2442
2014-01-29T02:02:44Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
CALIBRATION OF 1-D NUMERICAL CODES SOFTWARE FOR SITE RESPONSE ANALYSES
Hadsari, Vienti; Civil Engineering, Faculty of Engineering, Universitas Atma Jaya Yogyakarta
Susanto, Adhi; Electrical Engineering and Information Technology, Faculty of Engineering, Gadjah Mada University
Wilopo, Wahyu; Geological Engineering, Faculty of Engineering, Gadjah Mada University
Lanzo, Giuseppe; Geotechnical Engineering, Faculty of Structural and Geotechnical Engineering, Sapienza University of Rome
Pagliaroli, Alessandro; Geotechnical Engineering, Faculty of Structural and Geotechnical Engineering, Sapienza University of Rome
Chamlagain, Deepak; Geotechnical Engineering, Faculty of Structural and Geotechnical Engineering, Sapienza University of Rome
Adhikari, Ramesh; Geotechnical Engineering, Faculty of Structural and Geotechnical Engineering, Sapienza University of Rome
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2442
Fundamental frequency; Predominant frequency; Rayleigh Damping
en
Ground response analyses are used to predict surface ground motions for development of design response spectra, to evaluate dynamic stresses and strains for evaluation of earthquake hazards, and to determine the earthquake induced forces that can lead to instability of earth-retaining structures. The effects of local soil on ground motion are commonly evaluated by performing numerical analyses either in frequency or time domains.In order to evaluate the differences between frequency and time domain analysis, several analyses were conducted for homogenous stiff soil deposit with respective codes which are SHAKE and D-MOD2000. Linear and non linear analyses have been conducted. The non linear analyses with D-MOD2000 code have been carried out by using different frequencies in the Rayleigh damping formulation, i.e. fundamental and predominant frequency. For linear, PGA 0.1g is used in the analysis while for non linear PGA is scaled into three different value of 0.1, 0.3, and 0.5g.The results for both linear and non linear approach are similar. For the non linear analyses, it is shown that the curves derived using predominant frequency perform better than those using fundamental frequency. Main differences are for non linear approach where the differences between two codes are higher for higher input motion. As the calibration using predominant frequency between the two codes perform good, the respective codes are applied to evaluate soil response in Sant’ Agostino and San Carlo, in terms of PGA, due to May 20th 2012 Emilia Earthquake. There are 139 accelerometric station recorded strong motion. In this analysis, we consider one record which is in Mirandola station, the closest recording station where the Magnitude in epicentral area was 5.9 and 5.8 in Mirandola station. The recorded surface motion in Mirandola is transferred to the bedrock in 112 m depth and used as input motion for the two evaluated sites, San Carlo village and nearby municipality Sant’Agostino on 17 km distance from Mirandola station. The preliminary data presented here shows the PGA recorded in the bedrock of Mirandola station is 0.75g, while in Sant’Agostino and San Carlo is 0.92g and 0.81g.
oai:jurnal.ugm.ac.id:article/2443
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2443
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
DESIGN OF A PROTOTYPE HYDRO COIL TURBINE APPLIED AS MICRO HYDRO SOLUTION
Aprilliyanto, Arik; Fakultas Teknik, Universitas Gadjah Mada
-, Indarto; Mechanical and Industral Engineering Departement, Faculty of Engineering, Gadjah Mada University
-, Prajitno; Mechanical and Industral Engineering Departement, Faculty of Engineering, Gadjah Mada University
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2443
Renewable energy; Hydro Coil turbine; ribbon drive; efficiency
en
This study deals with the effort to release new revolution of renewable energy concept. Key issue in generating hydro power from low head, low flow sources until now has been impractical, expensive in efficient and complex technology. The idea of using Hydro Coil instead of turbine gives an economic advantage that it is relatively cheaper. The apparatus allows us to exploit sides that would not be practical at all for conventional small hydroelectric power.Hydro Coil turbine in experimental prototype has been designed, built and tested. The turbine includes 4 inches acrylic with ribbon-like curved shape insert, which present a gradual curve of approximately 70 degrees from the axial flow of water progressing to a tightly curved angle perpendicular to the flow of water at the exit point. The gradual curve is used to reducing the axial velocity of water, thereby further as consequence of transfer energy from water to ribbon, thus the central axle and ribbon rotated. This rotation is initiated at the low frequency coil, with energy incrementally transferred as water, hitting the low frequency coil, turning the ribbon slowly, progressing gradually to higher frequency, tight coil where maximal energy to the transfer occurs.Characteristics and efficiency of Hydro Coil turbine can be identified after laboratory experimental already finished. Turbine efficiency in 92.93% of this prototype exceeds expectation in the experiments. It thus demonstrates the promising potential of Hydro Coil technology to extract power from incoming water flow in low head sources.
oai:jurnal.ugm.ac.id:article/2456
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2456
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
DESAIN BIOBALL BERBAHAN KOMPOSIT BULU AYAM-RESIN POLYESTER: SIFAT MATERIAL, KARAKTERISTIK BENTUK DAN KARAKTERISTIK HIDRAULIK
Budianto, Ruslim; Fakultas Teknik, Universitas Gadjah Mada
Prasetya, Agus; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
-, Mudjijana; Jurusan Teknik Mesin, Fakultas Teknik, Universitas Gadjah Mada
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2456
id
Chicken Feather is main waste product of chicken processing as food, however it has a good potential for used in composite material. Material stiffness increase caused by hydrophobic Keratin which is contained in chicken feather both feather quill and feather fiber. Composite material as biofilter media potentially used to improve effectively of septic tank. The study was conducted to determine the effect of chicken feather fiber adding on density, impact strength and flexural strength of polyester composite, with addition of 10%, 15%, 20%, and 25% of feather fiber as variable. The best composition by mechanical test applied as biofilter material (bioball). Bioball characteristic was investigated to give some parameters used in wastewater treatment design, such as porosity of media, specific surface area, and density of bed media, spherical factor and biomass accumulation capacity. The parameters investigated in each bioball media with wide of bioball’s wall gap are 2 mm, 3 mm and 4 mm as variable. Chicken feather fiber composite has been used as bioball material provided light material 1,124 gr/cm3 in density. Increase in material strength was obtained by adding chicken feather fiber, bioball have been made has 44.291 MPa in maximum flexural strength and 5,781 kJ/cm2 in maximum impact strength. Bioball which has casted 5 cm in diameter, divided into three of types; bioball 2 (wall space 2 mm), bioball 3 (wall space 3 mm) and bioball 4 (wall space 4 mm). Bioball have been made has 260-369 cm2/cm3 of specific surface are and 0.78-0.83 of porosity. Based on spherical factor calculation bioball was more similar to parallel plate than rounded shape. Overall the shape was not rounded with spherical factor value between 0.23-0.358. Bioball 2 has the highest biomass capacity. Based on the test, biomass accumulation capacity of bioball 2 was up to 7.0 kg/m3 with estimation of backwashing time is every 20 hours.
oai:jurnal.ugm.ac.id:article/2457
2014-01-29T02:02:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/2457
2014-01-29T02:02:43Z
ASEAN Journal of Systems Engineering
Vol 1, No 2 (2013): ASEAN Journal of Systems Engineering
SISTEM PENURUNAN KADAR KROM (III) LIMBAH CAIR INDUSTRI PENYAMAKAN KULIT DENGAN KOMBINASI PRESIPITASI MENGGUNAKAN NATRIUM HIDROKSIDA DAN ADSORPSI MENGGUNAKAN BAGASE FLY ASH
-, Meirinna; Kantor Lingkungan Hidup Kab. Batang Hari, Jambi
Fahrurrozi, Moh.; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
Santosa, Sri Juari; Jurusan Kimia, Fakultas MIPA, Universitas Gadjah Mada
2013-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/2457
id
Wastewater in the tannery industry is the main waste due to the use of a great amount of water and chemical substances in the process. Wastewater which contains chromium from the tanning materials potentially causes physical and chemical changes in the environment. Chromium is harmful heavy metal which is non-degradable and able to cause danger towards environment and human health. Therefore, it is important to employ treatments before discharging the wastewater to the environment. One of the known methods to reduce the content of heavy metal is precipitation using sodium hydroxide. However, precipitation alone can not meet the strict quality standard for tannery industrial wastewater. Adsorption using bagasse fly ash (BFA) is a key promising tertiary method to achieve the high treatment standard. BFA is a low cost adsorbent since it is prepared from solid waste from sugar industry. This research aims to study optimum operating condition of the implementation of a combination of precipitation and adsorption methods for reducing chromium (III) in the tannery industrial wastewater.Initially, this study used synthetic waste to obtain optimum conditions for adsorption method. The optimum conditions were then tested using real waste from tannery industry. Synthethic waste used in this process was Cr(NO3)3.9H2O. Adsorption process used both activated BFA as well as raw (un-activated) BFA. Concentration of crom (III) in the filtrate was determined by AAS (Atomic Absorption Spectrocopy). Parameters of the study were pH of the precipitation, and pH of the adsorption.Results of this study showed that the optimum pH to chrom (III) concentration reduction is achieved from the combination of precipitation at pH of 8 and adsorption at pH of 5. The effectiveness of the concentration reduction of chromium using combination of both of these methods managed to lower the concentration of chromium from initial concentration of 544 mg/l to 0,18 mg/l (using activated BFA), with the effectiveness of chromium reduction 99.97%. This result complies with the standard based on Yogyakarta Governor's decree number 7/2010 about wastewater quality standard for wet blue leather industrial activities, which is 0,4 mg/l.
oai:jurnal.ugm.ac.id:article/3782
2015-02-09T03:56:06Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/3782
2015-02-09T03:56:06Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
ANALYSIS OF PHOSPHATE IN LIQUID WASTE HOSPITAL
Nurhayati, Emmy; MTS UGM
Hidayat, Muslikhin; UGM
Saraswati, Sri Puji; UGM
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/3782
Liquid Waste Hospital; Phosphate; Coagulation; Flocculation; Alum; Lime
en
Liquid waste generated by various activities in the hospital environment has the potential to pollute the environment if the parameters contained in it exceeds the specified quality standards. Parameters that most often exceeded the quality standard is phosphate (PO43-). Phosphate which exceeds the limit of 2 mg/L may affect the balance of aquatic ecosystems. One way to lower phosphate levels is using the coagulation flocculation process. This study aims to uncover the root cause of high levels of phosphate and recommendations for decline it and propose to install coagulation flocculation units.Research methodology starts from search and identification of phosphate levels of various source of phosphate in the hospital environment, from sump pit Dapur (Kitchen), sump pit Poli (Polyclinic), sump pit Lucas, sump pit Biara (Monastery), sump pit Genset and sump pit Carolus. Then doing the jar test in coagulation flocculation process using coagulant that is alum and lime with rapid stirring for 60 seconds and slow stirring for 15 minutes. Jar test was used to determine the optimal dose of coagulant for alum dose range between 50-150 (mg/L) and lime between 75-125 (mg/L). Coagulation flocculation units will be built on the largest phosphate producer with sampling as much as 6 times to determine the fluctuations of phosphate. Lab test of phosphate levels were performed using the spectrophotometric of SnCl2 method.The study data include phosphate levels from source of phosphate and phosphate fluctuations in the greatest source. Based on the results the largest source from pond Elisabeth. Jar test process is done by sampling as much as a liter of waste water taken from pond Elisabeth with total discharge of 26,640 L/day. Showed that the initial Phosphate of maximum from 7,1 mg/L decreased to 1,73 mg/L (75,63%) if given the alum dose of 50 mg/L and lime 125 mg/L which generates as much as 7,049 kg of sludge per day. Phosphate of average from 4,58 mg/L decreased to 0,73 mg/L (84,06%) with alum as much as 50 mg/L and lime as much as 75 mg/L which produces sludge as much as 5,378 kg/day. Phosphate of minimum from 2,23 mg/L decreased to 0,14 mg/L (93,72%) if given the alum dose of 50 mg/L and lime 75 mg/L with sludge as much as 4,931 kg/day.
oai:jurnal.ugm.ac.id:article/3783
2015-02-09T03:56:06Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/3783
2015-02-09T03:56:06Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
REEVALUASI KELUARAN DAYA DAN OPTIMALISASI PEMBANGKIT LISTRIK TENAGA HIBRID DI KAWASAN PANTAI BARU PANDANSIMO
usman, mukhamad khumaidi; MTS UGM
Kamal, Samsul; UGM
Setiawan, Ahmad Agus; UGM
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/3783
id
pemerintah kabupaten bantul dan kemenristek membuat pembangkit listrik tenaga angin 60 kW dan pembangkit listrik tenaga matahari 27 kW di kawasan pantai Baru Pandansimo, pemanfaatan pembangkit listrik tersebut digunakan diantaranya untuk penrangan jalan, pembuatan es, dan warung kuliner.penelitian ini bertujuan untuk merancang model sistem pembangkit listrik tenaga hibrid dengan menggunakan software Homer dan Tora, menganalisa hasil simulasi dengan membandingkan prosentase kontribusi pembangkit listrik tenaga angin dan pembangkit listrik tenaga matahari, dan menganalisa keekonomian dari embangkit listrik tenaga hibrid.model pembangkit listrik yang optimal untuk software Homer adalah kapasitas 2,5 kW dengan jumlah 24 unit untuk turbin angin dan 27 kW untuk solar sel, sedangkan untuk software Tora didapatkan model yang optimal dengan kapasitas masing-masing 1 kW, 2.5 kW dan 10 kW untuk turbin angin dan solar sel masing-masing berkapasitas 100 WP, 180 WP dan 220 WP. Hasil prosentase energi listrik yang dihasilkan dari simulasi Homer didapatkan PLTS sebesar 33 % dan PLTB sebesar 67 % dengan total energi yang dihasilkan sebesar 117.681 kW/tahun, sedangkan dari hasil simulasi Tora didapatkan prosentase PLTS sebesar 49 % dan PLTB sebesar 51 % dengan total energi yang dihasilkan sebesar 109.360 kW/tahun. Dari hasil perhitungan keekonomian proyek PLTH untuk harga jual di Pantai Baru Pandansimo yang ideal sebesar U$ 45 Sen/kWh, sedangkan harga jual di Pantai Baru Pandansimo sekarang sebesar U$ 3 Sen/kWh dengan nilai BCR sebesar 0.04 dengan demikian maka proyek PLTH dikatakan tidak layak dibangun.
oai:jurnal.ugm.ac.id:article/4964
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4964
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
PENELITIAN EFISIENSI PUMP AS TURBINE (PAT) UNTUK MENDUKUNG PERENCANAAN DAN IMPLEMENTASI PLTMh DI KABUPATEN SUMBAWA
Rusdi, Alfian
Maryono, Agus
-, Suhanan
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4964
id
The energy crisis will come soon, the consumption behavior and economic elevating will advance the energy depletion. The demand of power electrical around 4.000 – 5.000 MW per year will difficult to fix, if we just rely on fossil energy because of the increasing oil world price. The water energy is one of the renewable energy can be used as solution. Based on annual reporting of PT PLN (Persero) area NTB in 2012. Province of NTB has hydropower potential 82,35 MW but until 2012 the ratio electrical is 50,95%. The building of PLTA need high cost, so PLTMh is considered to solve soon the village electrical demand.Dusun Kaduk in Kabupaten Sumbawa Province of NTB is one of the hilly and purilieus village area that has potential of coffee field, but doesn’t has electrical sources. Pump as Turbine (PaT) is designed to change generator. The advance of PaT are easy instalation and maintanance, mass production, avalaible spare part and low investation so can utilize the maximum water potential. The purpose of research to examine the suit PaT for local area, to analize capability the centrifugal water pump type semi-open impeller SU-50 be used as PaT and to get the characteristic of relation between water discharge to output power. The experimental method is used to examine the layout PaT directly and note the parameters used to analize of data.The result of the research show the the centrifugal water pump type semi-open impeller SU-50 used as PaT can produce 911,73 rpm, The maximum power 61,09 W at head 4 m and the highest efficiency 19,05 %. The modified impeller by using forward blade close impeller can increase 935 rpm, the maximum power 62,35 W at head 4 m and the highest efficiency 20,42 %. The highest spin 1194,83 rpm, the maximum power 85,80 W at head 4 m with efficiency until 34,79 % is got by using backward blade close impeller. Result of similarity analysis if discharge 85 l/s, head 21 m, diameter of pump 0,523 m and highest spin 1600,094 rpm can produce power 311,211 kW. Based the research the PaT can be used as alternative of electrical power sources in village.
oai:jurnal.ugm.ac.id:article/4965
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4965
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
PREDICTION OF WELL BEHAVIOR USING WELL DELIVERABILITY ANALYSIS
Asmorowati, Dewi
Wildan, M. Waziz
-, Khasani
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4965
well deliverability; well sim; production decline; scale
en
In operating geothermal field, the thing to note is the sustainable production as well as problems that affect it. The problem that often occurs in the geothermal field is scale, corrosion and mechanical problems. One technique that can be used to predict the problems that occur around the bottom hole to the surface is using the well deliverability analysis method. Analysis is done by data and curve interpretation of deliverability curve based on Grant experiment. This study take data from several wells in two Geothermal Field in Indonesia. From the analysis, well A, D and F show production decline The deliverability curve of well A shows the production decline for about 60 – 85%, it is caused by moving of the flashing point, it shows from the increasing of dryness value from 7-14% in 1997 become 13-15% in 2010. The deliverability curve of well D shows the production decline for about 50%, it is caused by declining of reservoir pressure that can be seen from the decreasing of feed zone pressure in 1997 is 27 bar and in 2010 is 20 bar. The deliverability curve of well F shows the production decline for about 29%, it is caused by moving of the flashing point.
oai:jurnal.ugm.ac.id:article/4966
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4966
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
MODIFIKASI SISTEM DESTILASI MINYAK ATSIRI DAUN SIRIH (PIPER BETLE LINN) DENGAN PENERAPAN VOLUME AIR REBUSAN KONSTAN
-, Widodo
Prasetya, Agus
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4966
id
Most of the cultivation of essential oils, done with the process of distillation such as water distillation systems, direct steam distillation and steam boiler distillation. And was developed on a small/medium scale industry throughout the archipelago.In the process of water distillation, the flow rate and level of oil transport are determined by the ratio of raw materials volume versus distillations water volume. Later on, affected by the steam temperature as well. Both were influenced by the vapor pressure inside the boiling tank, which will determine the level of vapor saturation of oil to be transported.Modifiying the distillations process with applying a control tank to avoid decreasing of distillations watter during the process, with increasing the steam pressure, has successfully improove the oil transports until its optimum rates.By ratio of 4:1 with increasing steam pressure up to 0.3 kgf/cm2, has affecedt to incresing the steam temperature and the rate of oil transport, there for iproofing the yield from 0.44% to 0.71% by total of 80 l water condensate.
oai:jurnal.ugm.ac.id:article/4967
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4967
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
STUDY KOMPARASI LOST FOAM DAN KONVENSIONAL CASTING PRODUK DISC BRAKE
Yoso, Sumeru
-, Suyitno
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4967
id
Disc brake component is a vital component with gray cast iron base material, it’s also fast lasting wearing part, so it has be replaced often. The disc brake replacement component in a local market is being supplied by the small scale local metal casting industries have the same quality as the genuine part.Disc brake making process is utilizing casting method inserting RCS core between drag and coup, than metal molten poured inside mold. The problem of this method is the product result often have gas defect because the gas that occur from the mold in casting process cannot be released perfectly, and then trapped in the metal molten caused by permeability or the gas flow in the green sand mold is not good enough.Ventilating disc brake making is not utilizing evaporative casting method or lost foam casting yet at the moment so it need to be research for the gains and the losses between the casting result using conventional method and lost foam casting method, considering that there’s no research for the disc brake component yet as far.This research will give many benefits to know that the thin Styrofoam pattern construction’s of the disc brake, with quit complicated ventilation would not be strong enough to sustain the dry sand mold on the pattern so it will be collapse earlier before the metal molten filled the cavity from the pattern, but it will make good result if it’s combined with the RCS core using. The time duration of the dry sand mold and the re-using will be faster than the conventional casting which using 2 underside mold or drag and upside mold or coup using the green sand.
oai:jurnal.ugm.ac.id:article/4968
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4968
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
PENGARUH LEBAR SUDU TERHADAP KINERJA TURBIN VORTEKS
Randabunga, Yusuf
Kurniawan, Adhy
Darmo, Suryo
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4968
id
Vortex turbine is the one of turbines which meets those criteria. This turbine utilizes kinetic energy of vortex water and converts it into a shaft power. The objectives of this research were to obtain the torque that could be generated from the vortex turbine by varying the width of turbine blades and to know the output power also the optimum efficiency obtained from this variation. This research was conducted by using vortex pool in a laboratory scale with a diameter of 108 cm and 6 turbine blades on permanent rotation at 50 rpm, 60 rpm, and 70 rpm. Turbine blades were made from flat rectangular steel with a length of 40 cm sized 1/6, 2/6, 3/6, 4/6 and 5/6 times to radius of vortex pool.The results of the research showed the torque as 1.40 Nm at rotation is 50 rpm. The maximum power is obtained from blade with width of 3/6 times radius of the pool, that is 8.60 Watts at head 0.362 m and discharge 11.83 l/s or 0.01183 m3/s at rotaion shaft is 70 rpm. This experiment also generated and turbine efficiency of 16.46% at rotation of shaft is 70 rpm.
oai:jurnal.ugm.ac.id:article/4969
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4969
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
UJI EKSPERIMENTAL SEMEN PAPAN PARTIKEL BERBAHAN BAKU LIMBAH FLY ASH BATU APUNG SEBAGAI BAHAN PEREDAM SUARA
Amrullah, Apip; Lambung Mangkurat University
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4969
id
By the development in technology especially in architecture and industry with its noise activity, encourage us to do some efforts to solve noise problem. One might done is utilize pumice as noise absorber. Raw material used in this reaserch is pumice ash. Mixing compotsition variation between cement composition, pumice ash as sand subtitution, with comparison mixing composition at 1 : 6 (1 cemen : 6 ash), 1 : 8 (1 cement : 8 ash :), 1 : 10 (1 cement : 10 ash). Sound absorbtion coefisien are measured by standing wave tube apparatus. The result of the research indicates that mixing composition affects the sound absorbtion coefisien. Reaserch shows taht 1 : 6, 1 :8 and 1 : 10 sound absorbtion coefisien which is 0.96, 0,86 and 0.89 in 8000 Hz frequency. Comparison at 1 : 6, 1 : 8 and 1 : 10 (cement : sand ) has the best absorbtion coefisien at comparation 1 : 10 which is 0.98 with 4000 Hz frequency (middle level frequency).
oai:jurnal.ugm.ac.id:article/4970
2014-07-22T03:01:18Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/4970
2014-07-22T03:01:18Z
ASEAN Journal of Systems Engineering
Vol 2, No 1 (2014): ASEAN Journal of Systems Engineering
PEMANFAATAN LIMBAH CAIR INDUSTRI AREN DI DUKUH BENDO, DESA DALEMAN, KEC. TULUNG, KAB. KLATEN SEBAGAI PUPUK ORGANIK CAIR (POC) DENGAN METODE PENGOLAHAN AEROBIK
Pongoh, Jovita Irene
-, Sarto
Sulaiman, Muhammad
2014-07-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/4970
Liquid aren waste; Aeration; Liquid organic fertilizer
id
These days, a lot of solid and liquid waste produced from aren powder indutry, and one of the area for this industry located in Bendo Subvillage, Klaten District, Central Java. The liquid waste is the unwanted product from of the aren powder during the screening and precipitation process.. The liquid waste produced by the industry at Dukuh Bendo is containing high of BOD and COD and this is became an environmental disaster as most of the liquid waste did not through the waste treatment process, and sent directly to water stream so there is a need to overcome or minimize this whole problem, and the making of liquid organic fertilizer from the liquid waste of this industry is one of the solution. The usage of liquid organic fertilizer also can reduce the usage of chemical fertilizer and also can help repair the soil condition and minimize the environmental destruction caused by liquid waste from this industry.During the research, for the liquid waste treatment aerobic proces in the aeration pond is used with the addition of bacteria and varoius dilution composition; VAR1 the composition between liquid waste and water 50:50 with bacteria added, VAR2 the composition between liquid waste and water 80:20 with bacteria added, VAR3 the composition 100% liquid waste with bacteria added, VAR4 100% liquid waste with no bacteria added. From the laboratory test found that the liquid waste from aren industry contains 686 mg/l BOD and 5800 mg/l COD. The research was done in some stages; preliminary test to understand the characteristic of the liquid waste from aren powder industry, specially the BOD and COD levels,treatment in the aeration pond, and the result from the process ( liquid organic fertilizer) and it tested to cornstalk in this research and the height and the leaves growth are recordedThe result from aeration process with bacteria added are : the BOD with the efeective retention time for VAR2 is in day 4, with BOD level at 3.2 mg/l which is 98.8% reduced from the original level ( 686 mg/l). The COD with effective retention time for VAR2 is in day 4 with COD level at 120 mg/l which is 96.98% reduced from the original level ( 5800 mg/l. The maximum nitrogen level is in day 5 at 0.07629%, phospor level at 0.0199% and potassium level at 0.0169%the positif growth of the cornstalk recorded during the period of the time showing that the nutrient absorbed properly.
oai:jurnal.ugm.ac.id:article/5184
2015-09-01T01:23:45Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5184
2015-09-01T01:23:45Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
HYBRID POWER SYSTEM MODELING FOR ELECTRICITY SYSTEM IN SUMBAWA DISTRICT (HYBRID POWER SYSTEM MODELING)
-, sumartono
Setiawan, Ahmad Agus
Sopha, Bertha Maya
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5184
energy resources, energy management, hybrid power system, HOMER, emissions
en
Include the provision of energy management, utilization and enterprise shall be done justice, sustainability and so can not give optimal benefits for the greater welfare of the people. Sumbawa has a variety of potential sources of renewable energy such as; water energy, solar energy, wind energy, geothermal energy and biomass. From a variety of renewable energy potential can be made a model of hybrid power system design for the electrical system in Sumbawa is based on renewable energy in the region. The purpose of this study was to determine the magnitude of the potential of renewable energy for power generation, knowing large share of renewable energy to the electrical energy needs and design a model of hybrid power system for electrical system in Sumbawa by using HOMER (Hybrid Optimisation Model for Electric Renewables). The results of this study recommend a model of hybrid power system that is optimum for a total net present cost (NPC) US $ 144,954,400, operating cost of US $ 1,801,515 / year, the cost of electric (COE) US $ 0.090 / kWh of excess electricity and 99,072,760 (kWh / year) and the contribution of each component of the capacity modeling results are; PV Array 4.4%; wind turbine 20.3%; hydro turbine 74.4%; biomass generator 0.8%; G1 and G2 diesel generator as a back-up system by 0.1%. The results of model simulations also show that the model of hybrid power system that is recommended to have much lower levels of emissions than conventional systems where there is a reduction in the level of emissions into the environment by 99.75%. Thus the hybrid power system for electrical system in Sumbawa considered feasible as an alternative solution to meet the electrical energy needs in Sumbawa
oai:jurnal.ugm.ac.id:article/5186
2015-09-01T01:23:41Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5186
2015-09-01T01:23:41Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
GREYWATER MANAGEMENT OF PANTAI BARU PANDANSIMO KABUPATEN BANTUL FOR CREATING ZERO WASTE ZONE
Saputra, Agung Eka; Gadjah Mada University
Kusumawanto, Arif; Gadjah Mada University
Syamsiah, Siti; Gadjah Mada University
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5186
Greywater, Subsurface Constructed Wetland, Zero Waste, Pantai Baru Pandansimo, BOD
en
The beach which is experiencing the current developments in the districts of Bantul is Pantai Baru Pandansimo. This area is an area that has been declared by the Bantul regent as zero waste zone. The development of Pantai Baru Pandansimo will give some impact. Thing that can arises is the environmental pollution from trading activity at restaurants around Pantai Baru Pandansimo. Every restaurant produce washing waste (greywater) had only absorbed into the ground or yard restaurants because do not have access to treatment plant. The main objective of this research is plan alternative system management for greywater that corresponding to Pantai Baru Pandansimo area so can creating sustainable zero waste zone. The results of the analysis obtained that alternative management unit greywater that appropriate and can be used at Pantai Baru Pandansimo is subsurface constructed wetland because easy to understand society and easy maintenance. Application of processing units that had been planned to reduce the BOD load in the amount of 41% depending on the extent of the unit to be used and reduce greywater is discharged into the environment 60% -80% of waste. From calculations obtained, wetland unit dimensions used by the average discharge within one week of 276.25 liters / day is 1 x 0.5 x 0.8 m3 with detention time (td) 0,5 day. Wetland that is used can be used as a park around the culinary of Pantai Baru Pandansimo and can encourage people to be more aware of the concept of zero waste.
oai:jurnal.ugm.ac.id:article/5187
2015-09-01T01:23:43Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5187
2015-09-01T01:23:43Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
THE DETERMINATION OF LANDFILL (TPA) ALTERNATIVE LOCATION IN WEST TULANG BAWANG DISTRICT OF LAMPUNG PROVINCE
Renisita, Desy; Gadjah Mada University
Sunjoto, Sunjoto; Gadjah Mada University
Sarto, Sarto; Gadjah Mada University
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5187
Landfill, sanitaru landfill, GIS, SNI 03-3241-1994
en
West Tulang Bawang is one of the new regencies in Indonesia which was a new expanded area that continues to grow. It is followed by population growth rates resulting in increased volume of waste. The landfill (TPA) is an important component of any waste management system. A good waste has several characteristics. To ensure the appropriate selected land, a systematic process must be developed and followed.The study of the selection of the landfill (TPA) is aimed at finding feasible area as the location of the landfill, so that the allocation of the new landfill will be in accordance with local policies in regional spatial planning and meet the criteria of ISO No. 19-3241-1994. The role of Geographic Information System (GIS) in the management of solid waste is important because many aspects of planning and operations are highly dependent on the spatial data. The landfill selection process consists of three stages of filtering, i.e., the feasibility of the environment by utilizing Geographic Information System (GIS) to map the location of viable landfill, regional filtering phase based on the regional policy and the elimination filtering using SNI 19-3241-1994.The results of the study showed that with an estimated population in 2033 which is 330 807 people, the amount of waste that will go to the landfill through the 3R principle reached 309.36 m3 / day or 61.87 tons / day so that the area of the required land for the sanitary landfill pattern with a 20 year planning is 17.70 Ha. The alternative location was selected by with a priority level which is located on the Panaragan Jaya Utama of Central Tulang Bawang sub-district with a land of 99.68 hectares, Tulang Bawang village districts Panaragan Central with a land area of 136.26 ha and the Kagungan Ratu village of Tulang Bawang sub-district of 74 , 65 Ha.
oai:jurnal.ugm.ac.id:article/5190
2015-09-01T01:23:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5190
2015-09-01T01:23:39Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
STUDY OF CHARACTERISTICS OF GASIFICATION PROCESS OF VARIOUS BIOMASS IN A DOWNDRAFT GASIFIER
Aktawan, Agus; Gadjah Mada University
Prasetya, Agus
Wilopo, Wahyu
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5190
Gasification, Biomass, Syngas
en
Biomass gasification is an endothermic reaction process for converting biomass into syngas, occurs at high temperatures with limited oxygen. Knowing the temperature profile of biomass gasification wood charcoal, coconut shell charcoal and coconut shell, rice husk and woodchip and seek optimal results from gasification of biomass are the purpose of the research.The equipment in this research consisted of; gasifier as the main tool with 4 temperature sensors, two cyclones for tar and dust separator, cooler to refrigerate and filter containing biomass as a catcher of dust and tar from the syngas. Research start by ignite the biomass in the gasifier, the air flows by blower and the syngas came out after the filter. Research variabel are variation of biomass types mentioned above and variation of shell and coconut shell charcoal mixing. Observations were made up until the biomass in the gasifier did not produce syngas, characterized by gas results could not burn.The results of the temperature profile of gasification of various types of biomass shows that the syngas appeared in the early minutes (2 minutes until the 5th) on the gasification, such as gasification coconut shell, woodchip, rice husk. Syngas of coconut shell charcoal is 2,825% w/w of biomass and can burn for 19 minutes and resulted in 1,92% ash and 29,57% charcoal. Syngas of mixture 25% shell and 75% coconut shell charcoal is 5,013% w/w of biomass and can burn for 30 minutes and resulted in 1,61% ash and 5,1% charcoal.
oai:jurnal.ugm.ac.id:article/5270
2015-02-09T03:56:06Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5270
2015-02-09T03:56:06Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
INFLUENCE OF EFFECTIVE SIZE AND LEVEL OF SUPERNATANT LAYER IN SLOW SAND FILTER PERFORMANCE
Anggraini, Agustina Kiky
Fuchs, Stephan
Silva, Adriana
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5270
en
Slow sand filtration has been admitted as an old method of water treatment and has been widely used in the world. This type of sand filter is prominent in its simplicity, low cost, and effectiveness. The term effectiveness refers to the performance on removing particulate matter and microorganisms. There are some significant factors should be considered in the system of slow sand filtration, such as grain size distribution of media, sand type, bed depth, operation mode of filter, and filtration rate. This study focuses on the influence of different effective size of media and operation mode in slow sand filtration especially on removing turbidity. Grain size distribution is represented by the effective size (d10) and uniformity coefficient (Cu). In regard to the operation mode, both sizes were operated under intermittent operation mode and were compared in two different level of supernatant layer: decreasing level and constant level. Laboratory scale experiments were conducted using four filter columns. Two filter columns were filled up with Rhein sand in different effective size of d10 0.075 mm and d10 0.50 mm. Uniformity coefficient Cu 2.5 and curvature coefficient Cc 1 were the same for both d10. Every column was fed with the same concentration of artificial raw water. The artificial raw water was created from Heilerde (clay from Germany) which passed 0.063 mm sieve opening mixed with tap water. Fine grain size tends to be easier to be controlled in regard to filtration rate, and vice versa for the coarse grain size. Surprisingly, the coarse grain size was able to remove turbidity as good as the fine grain size. Permeability of column was also tested and it decreased along with the addition of Heilerde.
oai:jurnal.ugm.ac.id:article/5683
2015-09-01T01:23:46Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5683
2015-09-01T01:23:46Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
MAPPING POTENTIAL FOR WIND ENERGY IN COASTAL MARINE SENGGIGI FOR RENEWABLE ENERGY DEVELOPMENT SUPPORT
https://journal.ugm.ac.id/ajse/article/download/5683/9630
https://journal.ugm.ac.id/ajse/article/download/5683/9631
-, Muliadi; universitas nusa tenggara barat
Ruwaidah, Eliza
Asyari, Akhmad
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5683
Mechanical engineering, renewable energy
Wind Energy, Potensi Angin Senggigi
muliadi. Teknik mesin, Universitas Nusa Tenggara Barat
en
His form of energy self-sufficient villages throughout Indonesia is the government's goal in the field of energy. Utilization of wind energy as a renewable energy source is an attempt to answer the problem for change and the natural environment is also one of the conservation of conventional energy sources. The purpose of this research study is to get the wind potential in accordance with the site characteristics such as speed and direction as a basis for planning SKEA. Potential awakened power of the wind potential and value of the benefits to be derived based on economic analysis if the potential energy is utilized for the generation of renewable energy on the grid system. The method used is the method of distribution. The results of the analysis of wind energy potential in Selaparang in 2011 until 2013, increased in 2011 the potential energy of 278, 5 KW KW rose to 562.5 in 2012 and in 2013 to 522, 4 KW wind speed has increased so the potential for increased power. Increased wind speed at the beginning of the year and the end of the rainy season occurred. The magnitude of the potential of wind energy can be used for supplying the electricity needs of the population about the number of households 500. The potential of wind energy in Kediri in 2011 until 2013, the image can be seen that the energy per year decline in 2011 the potential energy of 1751.33 KW dropped to 636 , 96 KW in 2012 and declined in 2013 to 44.954 KW wind speed so that the lower the potential for wind power down. Economic analysis produces BCR value of 1.4. Wind speed in Kediri greater than in Senggigi same year, but increased wind speeds in Senggigi and in Kediri decreased.
oai:jurnal.ugm.ac.id:article/5789
2015-02-09T03:56:07Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5789
2015-02-09T03:56:07Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
PENGARUH JENIS ARANG AKTIF AMPAS TEBU, TATAL KAYU DAN TEMPURUNG KELAPA TERHADAP KEMAMPUAN PENJERAPAN WARNA AIR SUNGAI SAMBAS
Apriani, Winda
Perdana, Indra; Dept. of Chemistry Engineering
Faculty of Engineering
Universitas Gadjah Mada
Saraswati, Sri Puji; Dept. of Civil Engineering
Faculty of Engineering
Universitas Gadjah Mada
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5789
id
The availability of clean water still poses problems in Indonesia. The need of clean water for Sambas City people still depends on river water. This river water comes from Sambas River which has bright yellow color (73.6 TCU), exceeding the allowed maximum level for clean water in accordance with the Regulation of Health Affairs No.416/MEN.KES/PER/IX/1990, which is 50 TCU, with low turbidity (23.3 TCU) and low pH (4.34). The characteristics of this river water indicate that the water color of Sambas River is true color. Level of this type of water color can be degraded by adsorption process using activated charcoal. It is easy to find raw materials of activated charcoal from waste sources containing carbon in Indonesia, especially West Kalimantan, such as bagasse, wood chips and coconut shell. Therefore, this research was conducted to identify the influence of activated charcoal types of bagasse, wood chips and coconut shell which are used as adsorbent to adsorp the color of Sambas river water and to identify the optimum dosage and duration of the process.Activated charcoal was made of bagasse, wood chip and coconut shell through pyrolysis process at a temperature of 5000C for 3.5 hours followed by chemical activation process using H3PO4 5% for 24 hours. The water was from Sambas river, Tanjung Mekar Village, Sambas, West Kalimantan. The adsorption process employed various types of activated charcoal (bagasse, wood chips and coconut shell); dosage (1, 2, 3, 4 and 5%b/v); and contact time (10, 15, 30, 60, 90, 120 and 180 minutes).The results indicated that different types of activated charcoal material in the adsorption process give different color level. The best treatment of batch process with 500 ml of Sambas river water was from the adsorption using activated charcoal of bagasse with an optimum dosage of 2% b/v and optimum contact duration of 90 minutes. It produced water color level between 50.00-52.00 TCU (meeting the standard of the Regulation of Health Affairs No.416/MEN.KES/PER/IX/1990).
oai:jurnal.ugm.ac.id:article/5792
2015-02-09T03:56:07Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5792
2015-02-09T03:56:07Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
PEMANFAATAN LIMBAH TULANG-TULANG IKAN MENJADI PELET PAKAN IKAN UNTUK MENCIPTAKAN KAWASAN ZERO WASTE DI PANTAI BARU PANDANSIMO KABUPATEN BANTUL
Fitriyani, Rizki
Kusumawanto, Arif; Dept. of Planning and Architectural Engineering
Faculty of Engineering
Universitas Gadjah Mada
Miliati, Ria; Faculty of Agricultural Technology
Universitas Gadjah Mada
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5792
id
Pantai Baru Pandansimo is one of the attraction that is currently being developed Bantul district, located in Dusun Ngentak, Poncosari, Srandakan. Besides, we can enjoyed the beach, also served a variety of seafood from dozens of culinary stands, and there is also a Fish Auction Place (TPI). The existence of dozens of culinary stands, TPI and increasing tourists will cause the issue of waste cause the accumulation of organic waste such as leftovers in culinary stands plus there is no waste management system, the waste usually just discarded, dumped and left to rot that would cause smell and would disturb of tourist.This study aimed at finding out the extent positive impact of the utilization waste leftovers from stands culinary toward Pantai Baru Pandansimo to create zero waste region so as to reduce the quantity of waste into process fish feed. Then, to find out variation of formulation fish feed that good nutritional value so that can supply nutritional requirements of fish by Pearson Square method at various combinations of fish bone meal, shrimp waste meal, and rice bran. Chemical testing by proximate analysis and physical testing on the fifth variation to finding out variations of pellets which compatible with SNI feed the fish. So, pellets from waste can be beneficial to the surrounding community.The results of the study showed that utilizing waste leftovers from stands culinary in area Pantai Baru Pandansimo into fish is able to reduce the weight of organic waste by 2-3 quintals/month so the weight of waste from stands culinary can be reduced by 39%. Based on chemical test and physical test it was found that the optimal at the pellet P4 with a protein content of 34.34% and fat by 5.74% and P5 with a protein content 34.78% and fat by 5.14%. That results have appropriate of quality requirements for SNI-01-4087-2006 catfish, SNI-01-7242-2006 tilapia and SNI 7473:2009 carp. Waste management will provide improvements in environmental hygiene in the area Pantai Baru Pandansimo by 55% and improve waste management services by 65%. Sewage treatment will provide a positive benefit as much as 80% reduce the accumulation of waste and as much as 20% to educate people about the benefits of waste management.
oai:jurnal.ugm.ac.id:article/5793
2015-02-09T03:56:07Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5793
2015-02-09T03:56:07Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
DESAIN SISTEM INSTRUMENTASI PROSES DISTILASI FRAKSINASI BATCH BERBASIS KENDALI SUHU
Arman, Muhammad
Prasetya, Agus; Faculty of Engineering
Universitas Gadjah Mada
-, Sihana; Faculty of Engineering
Universitas Gadjah Mada
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5793
id
Distillation column is a column that is widely used in both large industry and small and medium industries. Use of distalasi column on small and medium industries such as the distillation of essential oils. In the subsequent use of the distillation column used for purification or further process to obtain a higher quality product in the form of multstage distillation. In the process of multistages distillation, temperature is an important component in the process, because of that controls the temperature has an important role. Temperature controllers available today are manual, which causes frequent inaccuracy of the distillation process, resulting in low product quality. Therefore automatic temperature control is required.In this thesis, instrumentation system of fractionation distillation process based of temperature control are designed. The design process notice the six important point temperature in the distillation process, using a thermocouple as a temperature sensor, and LM35 as the cold junction temperature, the 6218 USB as Data Acquisition Board, and the software LABVIEW 2010.The instrumentation system programming, displays the temperature from time to time at intervals of one second, the temperature statistics (min, max and average) as well as measurement results table. The program also features a choice (shaped slider) to set the temperature for a flexible batch process. The response characteristics of the instrumentation system is less than one second, both in displaying measured data, response indicator, display graphs, and data tables. The instrumentation system is also designed to regulate the flow rate of the cooling water and container replacement indicator for each product distillation.
oai:jurnal.ugm.ac.id:article/5794
2015-02-09T03:56:07Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/5794
2015-02-09T03:56:07Z
ASEAN Journal of Systems Engineering
Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
ENERGY MODELLING AND FORECASTING OF DAERAH ISTIMEWA YOGYAKARTA 2025
Haryono, Eko
-, Deendarlianto; Faculty of Engineering
Universitas Gadjah Mada
Sopha, Bertha Maya; Faculty of Engineering
Universitas Gadjah Mada
2014-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/5794
Energy; DIY; Mix; Forecasting; Demand; Supply
en
Daerah Istimewa Yogyakarta (DIY) is one of the provinces in Indonesia which does not have a backup or potential sources of non-renewable primary energy. The non-renewable energy demand until this time, such as oil,coal and gas is supplied from the outside. DIY is in Java Madura Bali (JAMALI) interconnerction system and has not had a large-scale power systems. While DIY has renewable energy sources such as hydro, solar, wind, wave and biomass energy. These renewable energy sources are alternative energy that have not been optimally used. The lack of reserve energy resources that resulting dependence of energy supply from other areas should receive special attention from DIY government. To meet energy demand, the energy resources development is required. Due to the energy resources development requires a long time and high cost, it is necessary to be supported by good planning in energy policy.The purpose of this study is to determine the balance of energy demand and supply of DIY until 2025. Furthermore, the purpose of this study is to find out a mix number of renewable energy. The Indonesian government has launched a vision of 25/25 which expection in 2025, the mix number of renewable energy will be 25%.The results of this study indicate that in 2025, the Transportion Sector is the largest energy user sector in DIY at 52.37%, followed by Household Sector (32.70%), Commercial Sector (8.26%), Other Sector (4.64%), and Industrial Sector (2.04%). The high level of energy consumption in the Transportation Sector is caused by the increasing number of vehicles especially motorcycles and passenger cars considering DIY is a student and tourism city. In term of the type of energy used, in 2025, the gasoline is the greatest type of energy demand (41.8%), followed by LPG (23.97%), electricity (18.14%) and diesel oil (11, 74%). This indicates that the fuel oil is still the main energy source for the DIY community activities. When viewed from supply side, most of the energy needs in DIY are supplied from outside. If the development of enewable energy targets DIY reached, the renewable energy mix is obtained by 0.53 %.
oai:jurnal.ugm.ac.id:article/7136
2015-09-01T01:45:08Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/7136
2015-09-01T01:45:08Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
DEVELOPING A MODEL OF A SUSTAINABLE MICRO HYDROPOWER PLANT MANAGEMENT SYSTEM (A CASE STUDY KEDUNGRONG MHP PURWOHARJO VILLAGE SAMIGALUH DISTRICT KULON PROGO REGENCY YOGYAKARTA PROVINCE)
Fajarsari, Aspita Dyah
Sulaiman, Muhammad
Setiawan, Bakti
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/7136
en
Yogyakarta Province until 2014 has built a total of 10 (ten) micro hydropower plants (MHP). However, from these ten MHPs, there is only 1 (one) which is still in operation, namely Kedungrong MHP. This Kedungrong MHP was selected as the research area due to its success in managing the MHP so that the electricity generated can be used by its local residents until now. Based on this best practice, the other MHPs which are still under construction or that have ‘stalled’ should learn from Kedungrong MHP to be able to reoperate so that they will be sustainable.This research employed mixed methods, between the quantitative research method and the qualitative research method. First, the data were collected using surveys, interviews and observation and then the model of the management system that Kedungrong MHP applies was described and evaluated.The findings of the research suggest that a sustainable MHP integrates three aspects, namely technical and environmental, social as well as economic aspects. The technical aspects deals with civil, mechanical and electrical components at the stages of planning, developing to operation and maintenance. The social aspects look carefully at community participation at the stages of planning, developing to operation and maintenance. Finally, the economic aspects pay attention to sources and forms of financing at the investment stage, the operation stage and the maintenance stage. In relation to the MHP scale, of those three aspects, the one that has the most significant impact on the sustainability of the MHP is the social aspects.
oai:jurnal.ugm.ac.id:article/7137
2015-09-01T01:23:47Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/7137
2015-09-01T01:23:47Z
ASEAN Journal of Systems Engineering
Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
DESIGN ENGINEERING DETAIL OF SONO (OPAK RIVER) MICROHYDRO IRRIGATION PROJECT PARANGTRITIS KRETEK VILLAGE IN THE DISTRICT OF BANTUL OF YOGYAKARTA
Budiyanto, Arief; SMK 1 Sedayu Kab Bantul, Vocational School of Sedayu of the District of Bantul
2015-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/7137
en
Bantul District has many small river which have the potency to be converted to electrical energy. This research aims at determination the potency of hydropower and designing very low head water power plant. The observational step started by measuring head and flow rate. Designing of water turbine should be considered the power available. Since the turbine usually run at low speed and the generator speed is quite high (1500 rpm) it require speed increaser. Based on primary data, the electrical power can be generated up to 41.02 kilowatt kW .The project’s objective is to provide the village Irrigation Sono (Opak river) Parangtritis with a reliable,green clean and economically viable source of electrical energy. A potential hydropower site in the vicinity of the villages was identified at Opak river. The salient features of the scheme are summarised as follows: Gross Head (Hgross) 2- 3.5 m , Net Head ( Hnett) 2.5 m, Flow River 4,48 m3 /s, Design of flow rate (Q) =2.5 m 3/s. Electrical Power (Pelg) 61,31 KW. The project comprises of the following components: Water intake and conveyance structures, including sand trap, headrace canal, forebay, draft tube and tailrace. Powerhouse, including protection wall Generating equipment, comprising of a propeller turbine and synchronous generator Electrical turbine control system, ELC (Electronic Load Controller) Transmission facilities.The implementation of the project will take approximately six to eight months including the finalisation of the preparatory work (detailed design, tendering, contract awarding), actual implementation of the project, testing, commissioning and training of operators. Two villagers will be assigned and trained as operators for the operation and maintenance of the plant. In order to optimize the viability of the water source office of Bantul, load management is deemed necessary to optimise the supply and demand situation, such as using energy pump for irrigation.
oai:jurnal.ugm.ac.id:article/17154
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17154
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 47-53
ENERGY CONSUMPTION PROJECTION IN YOGYAKARTA CITY
Prihandita, Septiana Ria; Master Program of System Engineering, Faculty of Engineering, Universitas Gadjah Mada
-, Deendarlianto; Mechanical and Industrial Engineering Department, Faculty of Engineering, Universitas Gadjah Mada
Budiarto, Rachmawan; Engineering Physics Department, Faculty of Engineering, Universitas Gadjah Mada
2015-12-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17154
supply-demand energy; LEAP; CO2 emission; Investment cost; Projection
en
Availability of energy is an important aspect for the success of regional development. Yogyakarta city does not have any non-renewable energy sources such as liquid fossil fuels, coal and natural gas. Consequently,these energy must be supplied from other provinces. The renewable energy potential in Yogyakarta city is not being utilized yet. Final energy consumption continues to rise along with population and economic growth.Energy planning and development need be done carefully in order to ensure the energy sustainability. This study aim to provide long-term projections in 2012-2025 periods on energy balance, energy demand andsupply based on energy reserves and current condition in order to meet energy elasticity to less than 1. Energy demand projection is calculated based on trend forecasting analysis by LEAP (Long-range Energy Alternatives Planning System).This result shows that the highest energy user sector in Yogyakarta city period 2012-2025 is transportation sector and the highest of energy demand by type is electricity and gasoline. Renewable energypotential such as biogas, solar energy, biomass and biodiesel (from using vegetable oil waste) could be developed in Yogyakarta city. Using biodiesel and solar energy could decrease diesel fuel and electricity.According to the baseline scenario, CO2 emission reached 2,176,182 tons, the first alternative scenario reached 1,925,089 tons and the second alternative scenario reached 1,877,839. Investment cost to build renewable energy in the baseline scenario reached USD 42,045 – USD 546,585. Investment cost to build renewable energy in the first alternative scenario reached USD 10,470,775 – USD 31,002,775. Investment cost to build renewable energy in the second alternative scenario reached USD 31,641,925 - USD 52,173,925.
oai:jurnal.ugm.ac.id:article/17156
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17156
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 54-59
WIND ENERGY POTENTIAL OF GUNUNG KIDUL COASTAL AS A FUNCTION OF PROBABILITY DISTRIBUTION
PH, Hendro; Master Program of System Engineering, Faculty of Engineering, Universitas Gadjah
Setiawan, Ahmad Agus; Engineering Physics Department, Faculty of Engineering, Universitas Gadjah Mada
Widyaparaga, Adhika; Mechanical and Industrial Engineering Department, Faculty of Engineering, Universitas Gadjah Mada
2023-12-01 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17156
Wind energy; Gunung Kidul; Poisson probability
en
Gunung Kidul coastal is an area that has varying heights up to 250 meters above sea level, and dealing directly with the Indian Ocean. Based on the location of the height of the sea surface, with Logarithmic formulation of wind speed, Gunung Kidul coastal has a varying energy class. The method used is an analytical model of constant density atmospheric, assuming that the density of the air from sea level to the top of the atmosphere has a fixed value. Furthermore, the value of wind speed is used as a probability distribution function based on the data period of 24.5 years. The results of the average value of wind energy are grouped according to energy class. On the use of the Poisson probability distribution, the class of potential good of energy is reached at a height of over 450 meters above sea level. While the use of the Normal distribution and Weibull reach potential class good at 100 meters above sea level.
oai:jurnal.ugm.ac.id:article/17161
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17161
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 60-64
MODELING AND ANALYSIS OF AC-AC SOFT STARTER FOR INDUCTION MOTOR BASED ON THYRISTOR AND IGBT
Harumwidiah, Anisa; Politeknik 17 Agustus 1945 Surabaya
Kurniawan, Adi; Institut Teknologi Sepuluh Nopember Surabaya
2016-12-16 13:00:31
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17161
Soft starter; Induction motor starting; Thyristor; IGBT
en
Motor Starting on large capacity induction motor using direct on-line starting (DOL) method may cause a problem for system. It is due to motor start-up current that can be up to eight times of the nominal current. Soft starter is an induction motor starting method based on power electronic that can significantly decrease motor starting current, resulting in reduced fuel consumption. In this research, a comparison between DOL starting method and two soft starter methods based on thyristor and Insulated Gate Bipolar Transistor (IGBT) is performed. The results show that thyristor based soft starter method with firing angle 90˚ can reduce input voltage from 220 V to 165 V so that the maximum starting current down from 633 A to 265 A. In the same voltage value, IGBT can reduce maximum starting current to only 100 A
oai:jurnal.ugm.ac.id:article/17162
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17162
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 65-72
PLASTIC RECYLING IN INDONESIA BY CONVERTING PLASTIC WASTES (PET, HDPE, LDPE, and PP) INTO PLASTIC PELLETS
Chandara, Hin Chandara; National Polytechnic Institute of Cambodia
-, Sunjoto; Jurusan Teknik Sipil dan Lingkungan, Fakultas Teknik, Universitas Gadjah Mada
-, Sarto; Jurusan Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
2016-12-16 13:16:32
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17162
recycling; plastics waste; plastics pellets; thermoplastics
en
Due to the population growth, economic development, increasing the consumption of products patterns in Indonesia and activities of citizen, MSW has generated by 384 Indonesia cities was about 80,235 ton per day (or 320,940m3 per day). The plastics solid waste (PSW) become to the major concern after organic waste and significantly impact to in environment. In order to solve the problem this research is conducted to identify the potential raw material from plastics, in order to replaces the pure material of plastics pellets that is made from crude oil and minimize the effect bring to environment. This compendium is presented the concept of the appropriation technology for plastics recycling, it emphasize the typical method by converting plastics waste of thermoplastic type Polyethylene terephthalate (PET), High density polyethylene (HDPE), Low density polyethylene (LDPE) and Polypropylene (PP) into plastics pellets. Whereas thermoplastics chemical structure possible for recyclable , the mechanical recycling method is played as the best technology and common used in recycling of conventional plastic waste material into new raw material without changing basic structure. The quality of pellets that reprocess from the plastics waste is based on the effective factors of sorting, washing, drying and temperature of melting in each zones of extruder machine
oai:jurnal.ugm.ac.id:article/17163
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17163
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 73-77
CHARACTERISTICS OF PYROLYSIS OIL BATCH POLYETHYLENE AND POLYSTHYRENE PLASTIC WASTE AT VARIOUS TEMPERATURES
Kusuma Dewi, Indah Noor Dwi; Master Program of System Enginering, Enginering Faculty, Universitas Gadjah Mada
Prasetya, Agus; Department of Chemistry Enginering, Enginering Faculty, Universitas Gadjah Mada
-, Supranto; Department of Chemistry Enginering, Enginering Faculty, Universitas Gadjah Mada
2015-12-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17163
pyrolysis; polyethylene plastic; polystyrene plastic
en
Efforts are being carried out in order to utilize polyethylene (PE) and polystyrene (PS) plastic waste by converting them into fuel or oil. One technology that can be used is pyrolysis. This study aims to (1) determine the quantity and the characteristics of oil from the results of pyrolysis polyethylene (PE) and polystyrene (PS) plastic waste at various temperatures which include characteristics of physics (specific gravity, heating value, flash point, pour point, and kinematic viscosity) and chemical characteristics (composition compounds in oil), (2) determine the optimal conditions of process pyrolysis related to the quality and quantity of oil by pyrolysis, and (3) determine the potential treatment of PE and PS plastic waste by pyrolysis method.The materials used in this study were the type of polyethylene (plastic bags) and polystyrene/styrofoam (for fruits or vegetables) plastic waste. The selected temperature variations are T = 400oC, 450oC, and 500oC. Pyrolysis oil was weighed and measured its volume to obtain v/wo and yield.The results showed that the quantity of pyrolysis oil from polyethylene (PE) plastic waste at temperatures of 400, 450, and 500oC based on v/wo (ml/g) respectively were 0.3429 ml/g; 0.5129 ml/g; and 0.199 ml/g while the results of polystyrene (PS) plastic waste at temperatures of 400, 450, and 500oC respectively were 0.89 ml/g; 0.905 ml/g; and 0.915 ml/g. The results of pyrolysis oil based on yield of polyethylene (PE) plastic waste at temperatures of 400, 450, and 500oC respectively were 33.33 wt%; 38.61 wt%; and 15.55 wt% while polystyrene (PS) plastic waste at temperatures of 400, 450, and 500oC respectively were 80.94 wt%; 79.79 wt%; and 80.14 wt%. While the characteristics shown by the results of pyrolysis oil from PE plastic with a temperature of 400oC were closer to kerosene while at temperatures of 450 and 500oC were closer to the characteristics of diesel fuel. As for pyrolysis oil results of PS plastic with temperatures of 400, 450, and 500oC were closer to the characteristics of gasoline. Optimal conditions of pyrolysis oil related to the quantity of pyrolysis of PE plastic at a temperature of 450oC was obtained when the highest of v/wo and yield respectively were 0.5129 ml/g and 38.16 wt%, while for the pyrolysis of PS did not have any optimal conditions. For, oil produced was relatively constant despite the increasing temperatures. Based on technical analysis, handling PE and PS plastic waste using pyrolysis methods provides benefits to society making it feasible to do.
oai:jurnal.ugm.ac.id:article/17164
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17164
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 78-86
STUDY OF THE USE OF BIOFILTER REACTOR FOR GREYWATER PROCESSING IN THE AREA OF FLOATING SETTLEMENT KELURAHAN MARGASARI KOTA BALIKPAPAN TOWARD THE CONCEPT OF ZERO WASTE
Supriyanto, Jen; Master of System Engineering, Faculty of Engineering, Gadjah Mada University
-, Sarto; Master of Chemical Engineering, Faculty of Engineering, Gadjah Mada University
Sulaiman, Muhammad; Vocational School of Diploma of Civil Engineering, Faculty of Engineering, Gadjah Mada University
2015-12-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17164
Margasari Floating Settlement; greywater; biofilter; zerowaste
en
The floating settlement in Margasari is one of the settlements in Kota Balikpapan which is known as a Beach City. PDAM (State Water Company) as the main resource of clean water fulfillment in Balikpapans, needs to needs to be used efficiently. One of the ways is by processing the Greywater which can be reused for toilet flushing in order to support the concept of Zero Waste.The purpose of this research is to obtain the composition and the potential data of Greywater which is appeared from the data and reusable for the citizens, to find out the effectiveness of the use of Biofilter Reactor as an alternative processing unit of Greywater towards the parameters of pH, BOD, COD, TSS, and NH3-N, and also to identify the citizens’ role potential in processing the Greywater towards the concept of Zero Waste in terms of processing domestic liquid waste.The Greywater level in Margasari Floating Settlement of Balikpapan with the parameters of BOD of 520,1–840,1 mg/l, COD of 1.562,5–2.450,0 mg/l, TSS of 297,0–1.047,0 mg/l, and NH3-N of 0,0002-16,257 mg/l is still very high. Margasari Floating Settlement of Balikpapan consists of 6.546 people and 1.198 buldings with an average of Greywater potential of each house of 393,42 l/day or 14.139.360 l/month for the whole area, while the average need for toilet flushing in each house is about 264,03 l/day atau sebesar 9.489.081,60 l/month for the whole area. The Biofilter Reactor can be used to process the Greywater for the whole area. The Biofilter Reactor which has an effective volume of 247 liter, has a diameter of the gravel media of 2,5–4 cm with an optimum effectiveness towards the BOD parameter of 86,54%, COD of 82,27%, TSS of 84,60%, and NH3-N of 19,99%. It can be used to process the greywater from a house consisted of 5 people with a Greywater debt of 0,36 m3/day, average BOD debt of 686,77 mg/l and average TSS of on Margasari Floating Settlement.
oai:jurnal.ugm.ac.id:article/17165
2016-12-16T06:48:31Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/17165
2016-12-16T06:48:31Z
ASEAN Journal of Systems Engineering
Vol 3, No 2 (2015): ASEAN Journal of Systems Engineering; 87-91
THE PERFORMANCE OF JUICER MACHINE ON VEGETABLE MILK PRODUCTION FOR SMALL AND MEDIUM INDUSTRIES
Karyani, Uli; Magister Teknik Sistem, Universitas Gadjah Mada
Mulyono, Panut; Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada
Miasa, I Made; Departemen Teknik Mesin dan Industri, Fakultas Teknik, Universitas Gadjah Mada
2015-12-21 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/17165
Juicer Machine; Milk Vegetable; SMEs; Feasibility
en
The purpose of this research is to make juicer machine to produce vegetable milk for small and medium-scale industries, and the machine has been able to be made with a juicer machine dimensions 90 cm X 40 cm X 114 cm. With ½ HP motor power and motor speed 1420 r / min so as to grind soy beans, green beans and corn with a production capacity of each of the milk is on average 15 liters, 12 liters and 12 liters.The first study is to design and create a juicer machine to produce vegetable milk based soy bean, green beans and corn by using some filter size is 60 mesh, 80 mesh and 100 mesh to obtain a best filter size for each type of vegetable milk. And organoleptic test to determine the level of preference for vegetable milk and obtained the most preferred type of vegetable milk is soy milk with a 100 mesh filter.Anti-E.coli test result on vegetable milk as product quality standards, not found any E. coli in each sample tested. While the feasibility of vegetable milk production using a juicer machine is feasible to use in the business of making the three types of vegetable milk because it can give the advantage of 1.20-fold for each unit of the issued capital, the benefits outweigh the effort of making industrial scale vegetable milk usual household. And in terms of the market, producing vegetable milk is still a promising business seen from vegetable milk organoleptic test average of 60% is still loved and considers it important to consume vegetable milk.
oai:jurnal.ugm.ac.id:article/23185
2021-03-07T00:30:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/23185
2021-03-07T00:30:58Z
ASEAN Journal of Systems Engineering
Vol 4, No 2 (2020): ASEAN Journal of Systems Engineering; 40-43
COMPARISON OF ABILITY PO4 AND NH3 DECREASE IN HOSPITAL WASTEWATER USING PHYTOREMEDIATION BATCH WITH EICHHORNIA CRASSIPES AND AZOLLA PINATA
https://journal.ugm.ac.id/ajse/article/download/23185/45120
W, AM Lelie Novia; Universitas Gadjah Mada
Wilopo, Wahyu; Universitas Gadjah Mada
Prasetya, Agus; Universitas Gadjah Mada
2020-12-25 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/23185
Environment Engineering
Hospital Wastewater, Phytoremediation, Water hyacinth, Azolla Pinata
en
Hospital operations have the potential to produce waste, especially wastewater, which can cause environmental pollution. Therefore it is necessary to control the disposal of liquid waste that is discharged into the environment. It is required to reduce the pollution of wastewater management is excellent and appropriate legislation. Research methodology starts from the data observed laboratory test results for samples of hospital wastewater. From these data, it is known that the levels of phosphate and ammonia still do not meet quality standards following the Decree of the Minister of Environment No. 58 of 1995 regarding effluent standards for hospitals. Further research is limited only focused on decreased levels of phosphate and ammonia in hospital wastewater.Data research includes a phosphate concentration of outlets as a pilot study. The subsequent wastewater will be divided into seven-bath, three-bath containing wastewater and water hyacinth plants with a density different in each basin ie density of 60 mg/cm2, 90 mg/cm2, and 120 mg/cm2, three baths containing hospital wastewater and Azolla plant density of each tub 60 mg/cm2, 90 mg/cm2, 120 mg/cm2, and the control tanks containing wastewater without a given crop. Based on the results obtained, phosphate levels can meet the fastest quality standards for four days on a tub of hospital wastewater and water hyacinth with a density of 120 mg/cm2 and all of a tub of wastewater hospitals and Azolla. For ammonia takes the fastest four days, this happens in a tub filled with water hospital waste, and water hyacinth with a density of 120 mg/cm2 and the entire tub of wastewater hospitals and Azolla.
oai:jurnal.ugm.ac.id:article/28418
2020-12-15T10:52:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/28418
2020-12-15T10:52:39Z
ASEAN Journal of Systems Engineering
Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering; 27-30
SOLAR AND WIND ENERGY MODELLING FOR CENTRAL BANGKA REGENCY, BANGKA BELITUNG PROVINCE
Edifikar, Wahyu
Sopha, Bertha Maya; Mechanical and Industrial Engineering Department, Faculty of Engineering, Universitas Gadjah Mada
Setiawan, Ahmad Agus; Engineering Physics Department, Faculty of Engineering, Universitas Gadjah Mada
2020-07-15 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/28418
Engineering;System Engineering
renewable energy, wind, solar, HOMER, hybrid
en
Central Bangka is a developing regency in Bangka Belitung Island Province. Geographically Bangka Belitung Islands is not far from the equator. The development of human resources and infrastructure for the energy sector is an integral part of regional development efforts. To fulfill the district's energy, we need to look at the potential of renewable energy such as wind power and solar power within the district. This research also provides the potential renewable energy capacity configuration through a simulation.This research used the simulation approach method to map the energy demand over the district and renewable energy available in the region. Energy demand data received from the National Electrical Company (PLN) of Bangka Belitung Province, and potential renewable energy data were obtained from the Ministry of Energy and Mineral Resources of The Republic of Indonesia and the NASA website. Software HOMER is used to analyze electrical energy potential from renewable energy sources.The simulation shows wind energy could provide 0.15 – 0.19 kW and solar power at 3.99 – 4.96 kW/m2/day. The optimum configuration of energy supply consists of 61.4% solar energy and 38.6% wind energy. The hybrid configuration above using the solar photovoltaic (PV) output of 286,981 kWh/year and wind generator output of 180,758 kWh/year and an estimated value of $1,663,598.53 for capital cost, $134,548.34 of operational cost, and cost of energy generated at $0.43/kWh.
oai:jurnal.ugm.ac.id:article/31311
2022-02-22T12:00:08Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/31311
2022-02-22T12:00:08Z
ASEAN Journal of Systems Engineering
Vol 5, No 1 (2021): ASEAN Journal of Systems Engineering; 27-30
STUDY OF GREYWATER REUSE SYSTEM WITH LOCAL MATERIAL FILTER
Bontinge, Stenly Recky; Universitas Gadjah Mada
Prasetya, Agus; Universitas Gadjah Mada
Kamulyan, Budi; Universitas Gadjah Mada
2021-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/31311
Environmental Engineering
reuse, greywater, mesh size, seawater
en
The abundant supply of greywater as domestic waste becomes an opportunity for further processing and can be reused as water (reuse) instead of consumption (eating and drinking). Every day as much as 60% of greywater is wasted as a by-product of human consumption. Filtration using local media becomes the treatment option. The size of the greywater particles ranges from 10 μm to 100 μm. The filter media size is made into two levels i.e., 80 mesh (active zeolite and charcoal) and mesh 18 (active sand) to filter particles by ten μm and mesh 14 (zeolite and activated charcoal) and mesh 10 (activated sand) to filter the particle size of 53 μm. The combination of filter media thickness in three experiments took one of the filter media to be used in each experiment. Each experiment will be used one filter media with a thickness of 50 cm and 25 cm each for supporting filter media, with a total media thickness of 100 cm.All of the above become independent variables in research. While the dependent variable is water quality standard in accordance PP. 82 the year 2001 with the main parameters are BOD, COD, TSS, pH, and detergent. The flow rate is set at 24.55 ml / m2 min. Besides the quality standard, the research still refers to cost efficiency and processing time (filtration). All variables consist of 6 filters that give different results; in laboratory test control, only pH fulfills the quality standard of PP. 82 of 2001. This study provides the best combination of filter media in A filter with BOD presentation: 82%, COD: 85%, TSS: 99%, and 98% detergent with the fastest contact time of 2700 seconds. The resulting effluent placed TSS and detergent parameters below the quality standard threshold with TSS values ranging from 15-24 mg / l, while the detergent content was in the range of 14.828 - 42.37 mg / l.
oai:jurnal.ugm.ac.id:article/57123
2021-03-07T00:30:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/57123
2021-03-07T00:30:58Z
ASEAN Journal of Systems Engineering
Vol 4, No 2 (2020): ASEAN Journal of Systems Engineering; 51-56
LONG TERM PROJECTION OF ELECTRICITY GENERATION SECTOR IN WEST PAPUA PROVINCE: LEAP MODEL APPLICATION
Nur'Aini, Etika; Universitas Gadjah Mada
Darmawan, Isra Nuur; Universitas Wijaya Kusuma
Rayesa, Mohammad Alfiza; Universitas Gadjah Mada, Indonesia
2020-12-25 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/57123
Power
Electricity, Capacity, Renewable Energy, LEAP
en
Electricity is one of the crucial infrastructures in economic development. The number of registered customers electricity increases every year based on data from the State Electricity Company (PLN) Manokwari branch office data. Electricity increase because it has become an essential part of everyday life. Therefore, in West Papua, it is necessary to fix this electricity problem where the most significant source is still from fossils. By looking at potential sources in West Papua that are more sustainable and renewable to meet public electricity demand in West Papua.In this study, LEAP software will simulate several scenarios, namely based on data from the RUPTL (Electricity Supply Business Plan) and further digging based on the potential literature in West Papua. There will be three scenarios; scenario 1 uses BAU (Business as Usual) as available in RUPTL. Scenario 2 uses BAU data and adds potential renewable energy. Scenario 3 is not using fossil energy but using renewable energy. The result is West Papua can be 100% electrified in 2025 if using scenario 2. The potential for renewable energy in West Papua is wind and sun. However, it does not rule out other sources, such as hydropower.
oai:jurnal.ugm.ac.id:article/57567
2020-12-15T10:52:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/57567
2020-12-15T10:52:39Z
ASEAN Journal of Systems Engineering
Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering; 20-26
POTENTIAL AND FEASIBILITY ANALYSIS OF BIOMASS ENERGY FROM PALM OIL MILLS ON NORTH PENAJAM PASER REGENCY REGION OF THE NEW STATE CAPITAL INDONESIA
Nashrulloh, Faruq; Universitas Gadjah Mada
Sulaiman, Muhammad; Universitas Gadjah Mada
Budiarto, Rachmawan; Universitas Gadjah Mada
2020-07-15 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/57567
System Engineering
biomass;renewable;energy
en
This paper presents a techno-economic potential and feasibility analysis on the planning of Biomass renewable energy from palm oil mills on the North Penajam Paser Regency. They were analyzed using the last three years of production data history from 7 Palm oil Processing Factories in the region and using questionnaires and interviews. Total processing fresh fruit brunch is about 891.624 tons/year. Total potential electricity generated from palm oil residue (Fiber, Shell, and Stem) is 28.009 kWh. The factories are located in Babulu, Waru, Penajam, and Sepaku.The assessment of sustainability indicators in this research is considering technology and economic aspects. The technology aspect evaluates the technical planning of installations that are possible to build in the area. For financial aspects of sustainability, evaluates the net present value (NPV), internal rate of return (IRR) and, the payback period of renewable energy installation. This analysis is used to get a comprehensive insight from the potential biomass energy at the research location and conduct a feasibility study based on techno-economic analysis to develop new state capital Indonesia and the supporting regions.
oai:jurnal.ugm.ac.id:article/59066
2020-12-15T10:52:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/59066
2020-12-15T10:52:39Z
ASEAN Journal of Systems Engineering
Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering; 13-19
MAPPING THE DEGREE OF TECHNOLOGICAL CAPABILITY IN SMALL AND MEDIUM INDUSTRY OF AUTOMOTIVE COMPONENTS
https://journal.ugm.ac.id/ajse/article/download/59066/182083
Antesty, Sella; Universitas Gadjah Mada
Tontowi, Alva Edy; Universitas Gadjah Mada
Kusumawanto, Arif
2020-07-15 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/59066
en
The automotive industry is known to increase exports since 2015 and is predicted to continue to grow. To develop the industry, the government is known to issue several schemes, and one of them is in the form of mandatory rules for partnerships with the small and medium industrial sectors. However, there is no industrial, institutional map seen from various aspects, including technology, human resources, information, and organization. This map is essential and useful for stakeholders to develop the industry because it provides more directed assistance.In this study, the small and medium industries for processing metal automotive components in Tegal City are used as mapping objects. The technometric method is used to calculate the level of technology contribution they have. The results of this study indicate that the four aspects covering Technoware, Humanware, Infoware, and Orgaware for small and medium-sized automotive component processing industries in Tegal City are in a reasonable range. For improvement or guidance, production facility technology is the priority. Then proceed to employee competencies, information systems, and organizational management. Mapping should be done regularly every five years or less than five years as an evaluation.
oai:jurnal.ugm.ac.id:article/60527
2020-12-15T10:52:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/60527
2020-12-15T10:52:39Z
ASEAN Journal of Systems Engineering
Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering; 8-12
APPLICATION OF NEWTON – RAPHSON METHOD TO ANALYZE THERMAL EFFICIENCY OF GAS TURBINE BEFORE AND AFTER ENGINE REPLACEMENT
Fernando, Damianus Mario Ricky; Master Program of System Engineering, Faculty of Engineering, Universitas Gadjah Mada
Waluyo, Joko; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada
Dewayanto, Nugroho; Center for Energy Studies, Universitas Gadjah Mada
2020-07-15 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/60527
System Engineering
Gas turbine; Engine Replacement; Thermal Efficiency analysis; Newton - Raphson
en
Gas turbine performance is one of the main concerns in the operating of industrial plants. Thermal efficiency is vital to analyze the performance of the gas turbine. This research purpose is to analyze the gas turbine's thermal efficiency after performed engine replacement in one of the gas industries in Kutai Kartanegara, East Kalimantan, Indonesia. The data was taken during the period from August 2017 to July 2018, while engine replacement was performed in February 2018. The data were processed to develop simulation models expressing the characteristics of the equipment. The simulation models were then solved simultaneously using the Newton – Raphson Method. A beneficial advantage of Newton Raphson is that it enables to handle a massive number of data and provides faster iteration compare to other methods. Based on the simulation results, the thermal efficiency before performed engine replacement was 23.43% with a net power of 18.109 MW and fuel consumption of 1.640 Kg/s. Meanwhile, the development of thermal efficiency after performed engine replacement was 28.24% with a net power of 18.597 MW and fuel consumption of 1.397 Kg/s. This indicates that after performing engine replacement, the thermal efficiency increased by 4.81% and saved fuel by 0.243 Kg/s.
oai:jurnal.ugm.ac.id:article/60543
2020-12-15T10:52:39Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/60543
2020-12-15T10:52:39Z
ASEAN Journal of Systems Engineering
Vol 4, No 1 (2020): ASEAN Journal of Systems Engineering; 1-7
AN IMPROVEMENT IN THE MOBILITY OF MANGKUBUMI YOGYAKARTA AREA WITH URBAN MODELING INTERFACE SIMULATION
Hartanta, FA Galih Sih; Universitas Gadjah Mada
Kusumawanto, Arif; Universitas Gadjah Mada
2020-07-15 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/60543
Architecture; Urban Desain & Tecnology
Mobility, UMI, Road Network Pattern
en
Mangkubumi Yogyakarta area is not only a strategic area in the city of Yogyakarta, which lies on the axis of philosophy, forming the spatial structure of the city of Yogyakarta but also a compact area with building facilities that function as offices, education, trade/services, worship, and settlements. The discourse of developing the site has long been announced as a supporting area for Malioboro tourism, and Tugu station developed into TOD (Transit Oriented Development), among others. In 2019, the research, development research aiming to find an area model supporting the realization of the maximum mobility value was carried out in Mangkubumi area to measure mobility levels in the area, and the results of this study found that the rate of mobility and walkability was 76 and 79 respectively.The method used was a simulation of the Urban Modeling Interface (UMI) software to measure the value of mobility in regional models. The research step used area modeling, which was carried out in eight models. After the simulation, the best model with the highest mobility value was selected. The eight models were made based on the four road network patterns of Morlok’s idea (Grid, Spiral, Hexagonal, and Delta), each of which was designed to be two types, namely, type A and type B. Type A was a form of modeling by conducting interventions focused on residential building facilities, and type B was focused on all area building facilities. The finding of this research was that the best road network pattern was the Delta network pattern after intervening in all building facilities and after carrying out land use by placing residential building facilities at the center of the area and placing other building facilities on edge the area. This simulation resulted in a walkability score of 92 and bike-ability of 92. The score is the highest in the walk score ranking level. A value of 92 means that there are walker's paradise, daily business not requiring a car, and biker's paradise, daily affairs done by cycling.
oai:jurnal.ugm.ac.id:article/62641
2021-03-07T00:30:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/62641
2021-03-07T00:30:58Z
ASEAN Journal of Systems Engineering
Vol 4, No 2 (2020): ASEAN Journal of Systems Engineering; 44-50
FEASIBILITY STUDY OF MICRO HYDRO POWER PLANT CAPACITY IN BLUMBANG BANJARARUM KALIBAWANG KULONPROGO
Timur, Lintang; Institut Teknologi Yogyakarta
Hindarti, Fifin; Institut Teknologi Yogyakarta
Indrawati, Rosiana; Institut Teknologi Yogyakarta
2020-12-25 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/62641
Energy
PLTMH, Supply, Demand, economic comparison
en
The Blumbang micro hydro power plant is a power plant utilizing hydropower that supplies electricity to the Blumbang area. The resulting supply is very large, around 30 kWh. However, it cannot be fully used by the surrounding society. So, it is necessary to do a feasibility study to increase the power capacity to determine supply and demand. This research aims to determine the community's supply and demand, which will impact the potential that can be taken by society.The method used is field observations, supply and demand observations, analysis of differences in supply and demand. The results that the feasibility of increasing the power capacity. It supplies generated from PLTMH Blumbang ranges from 24-26 kWh of the electricity demand of micro hydro power plant, 6 kWh demand electricity of micro hydro power plant and PLN 16 kWh. The Blumbang society's electricity bill has decreased with the Blumbang micro hydro power plant.
oai:jurnal.ugm.ac.id:article/63220
2021-03-07T00:30:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/63220
2021-03-07T00:30:58Z
ASEAN Journal of Systems Engineering
Vol 4, No 2 (2020): ASEAN Journal of Systems Engineering; 31-39
WIND FARM LOCATION SELECTION AT THE SOUTHERN COAST OF YOGYAKARTA PROVINCE FOR ENERGY SUPPLY OF HYDROGEN FUEL PRODUCTION
Setyaji, Irwan; Gadjah Mada University
Budiman, Arief; Universitas Gadjah Mada
Wilopo, Wahyu; Universitas Gadjah Mada
Prasetyo, Ridwan Budi; Agency for the Assessment and Application of Technology (BPPT)
2020-12-25 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/63220
en
The depletion of non-renewable energy reserves and increased awareness of environmental damage caused by fossil-based fuel use have encouraged the world’s efforts to develop and utilize new and renewable energy sources, including in Indonesia, especially in the special region of Yogyakarta. The potential for wind power plants can be developed in 3 districts in the southern part of Yogyakarta, bordering the Java Sea, to be converted into hydrogen through an electrolysis process. The three research locations were Bugel Beach in Kulon Progo, Pandansimo Baru Beach in Bantul, and Baron Techno Park at Baron Beach in Gunung Kidul. The selection of the most optimum location was made employing the Analytic Hierarchy Process (AHP) method by considering three factors, namely technical, location, and socio-economic factors. The first factor includes the potential for electricity generation from wind power and the available land area. The second one consists of sub-factors, namely access to the location and the distance to the PLN electricity distribution line. Then the last one includes conflicts with tourism and the economic activities of the surrounding community. After obtaining the most suitable location, planning is carried out for the wind farm that is built, the amount of electrical energy produced, the cost of generating electricity, and the cost of producing hydrogen from the electrolysis process. Pandansimo Baru Beach is an ideal location, with an average wind speed of 4.833 m/s. Five Vestas V80 2000/80 wind turbines were selected according to the available land. The annual electrical energy that can be produced from this system is 161,677,216 kWh/year with a generation cost of 0.118 USD/kWh and is capable of producing 230,960 kgH2 of hydrogen at 4.35 USD/kg.
oai:jurnal.ugm.ac.id:article/63343
2021-03-07T00:30:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/63343
2021-03-07T00:30:58Z
ASEAN Journal of Systems Engineering
Vol 4, No 2 (2020): ASEAN Journal of Systems Engineering; 57-62
PERFORMANCE OF ROOFTOP PHOTOVOLTAIC SYSTEM WITH ADDITIONAL WATER COOLING SYSTEM
Priyono, Subur; Universitas Gadjah Mada
Wilopo, Wahyu; Universitas Gadjah Mada
Ridwan, Mohammad Kholid; Universitas Gadjah Mada
2020-12-25 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/63343
Power
Solar panels, Cooling system, Rooftop, Power Plants
en
Improving solar power plant performance is considered quite important for existing and prospective users of rooftop solar power plants in Indonesia due to its unattractive economic value. One of the efforts to optimize the performance is the application of an additional cooling system on the plant's photovoltaic module. This study aimed to determine the effectiveness of temperature reduction of the applied cooling system on solar panel productivity. The research was performed on the existing rooftop solar power plant with a capacity of 3 kWp, located in Depok City with coordinates of 6°38'03.40" South Latitude and 106°82'03.49" East Longitude.The results showed that the additional water cooling system with a closed-loop pumping method on the installed solar module’s entire surface could improve the rooftop solar power plant performance with an average production increase of 15.7% in 7 days of study. Meanwhile, from an economic point of view, this cooling system installation payback period was 2 years.
oai:jurnal.ugm.ac.id:article/64296
2021-10-14T14:01:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/64296
2021-10-14T14:01:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 1 (2021): ASEAN Journal of Systems Engineering; 21-26
THE EFFECT OF RESIDENTIAL ROOM CONFIGURATION ON NATURAL VENTILATION OF RUSUN UNITS TO ACHIEVE LOW ENERGY BUILDING
Ririhena, Megan Afkasiga; Universitas Gadjah Mada
Syafii, Nedyomukti Imam; Universitas Gadjah Mada
2021-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/64296
Architecture
Rusun, Natural Ventilation, Wind
en
Rusun is a simple flat categorized as Affordable Housing (AH), which means it requires economic energy efficiency and optimal Natural Ventilation (NV) to manifest and provide comfort for users. This research will review the effect of spatial configuration on NV conditions of Rusun unit in terms of the condition of wind flow (WF) and wind speed (WS) value in each residential room by simulation method.The condition of the unit is on the 10th floor and height of 31.5m with an outdoor WS of 1.62 m/s in three different space configurations. It was found from the simulation that residential space that has direct access from openings both inlet and exit (outlet) has a more optimal WF and WS. From the WF condition and WS value following the needs of residential user activities, it is expected to optimize NV in Rusun units and in line with that, can realize energy-efficient Rusun buildings in terms of occupancy.
oai:jurnal.ugm.ac.id:article/65414
2022-02-22T12:00:08Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/65414
2022-02-22T12:00:08Z
ASEAN Journal of Systems Engineering
Vol 5, No 1 (2021): ASEAN Journal of Systems Engineering; 9-15
ENERGY SYSTEM DESIGN IN PACITAN REGENCY-EAST JAVA PROVINCE
Widiyanto, Syam; Universitas Gadjah Mada
Nur'Aini, Etika; Universitas Gadjah Mada
Sasmito, Dony Anggit; Universitas Gadjah Mada
2021-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/65414
System New and Renewable Energy
Energy planning, Renewable energy, CO2 emissions
en
Planning the construction of renewable energy plants in Pacitan district addresses the increasing electricity needs every year. Pacitan Regency is located on the coast with natural conditions in most of the mountains; there is a lot of renewable energy potentials such as water, wind and sunlight. Based on data from the central statistics agency of Pacitan district with the population increased by 0.18%/year. The energy system planning in this study allocates 70% of renewable energy generation and 30% of fossil plants by 2030.Projected availability of steam power plants with installed capacity of 2 x 315 MW, power capable of 560 MW. The distribution of renewable energy power plants is spread in the Pacitan area with hydroelectric power plants with a total target of at least 412 MW by 2025 and Pump Storage power plants with a total target of at least 1000 MW by 2025. Solar power plants have the potential of intensity radiation 4300 Wh/m2; the average air temperature is 32.5 0C and Solar Radiation 38.71%. Electricity generation waste power with a total target capacity of at least 84 MW. Wind potential with an average speed of 9 m/s. By 2030, the population of Pacitan district will reach 566,413 people, with an energy consumption of 843.85 kWh/capita; the demand required is 187,613 Mwh. By reducing the use of power plants from 100% to 30% can reduce CO^2 emissions to 125,419,390,667 Tons.
oai:jurnal.ugm.ac.id:article/66779
2021-10-27T12:57:02Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/66779
2021-10-27T12:57:02Z
ASEAN Journal of Systems Engineering
Vol 5, No 1 (2021): ASEAN Journal of Systems Engineering; 16-20
SIMULATION MODEL DEVELOPMENT FOR FIRE WATER PIPING NETWORK WITH NEWTON-RAPHSON ITERATION
Patarru, Ari Ariangga Orranius Putra; Universitas Gadjah Mada
Waluyo, Joko; Universitas Gadjah Mada
Masruroh, Nur Aini; Universitas Gadjah Mada
2021-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/66779
Engineering
System Engineering; Newton-Raphson; Fire Water Network; Iteration
en
The oil and gas industry is an industry that possesses various risks. The most significant risk in this sector is fire. To support the oil and gas production activities, it is necessary to install permanent and non-permanent fire extinguishers to prevent and deal with fire accidents. The firewater network system has a role in supplying flow rates with a certain pressure to protect the production process in a fire. The flow rate and pressure must be able to preserve the process area. Therefore the performance of firewater network system must be monitored. Over time, the performance degradation of the firewater network system is unavoidable. This decrease is due to scaling or leak minor at pipe and the decreasing performance of the diesel fire pump.This research aims to create a model of simulation fire water network system using newton-raphson iteration. The simulation model that is formed will be used to vary the flow rate against pressure. Based on iteration show the flow rate at platform 4 is 198.9 m3/h. The discharge variation is carried out to see the pressure on platform 4, the variation of the discharge of 2,000 m3/h gives a pressure of 150.45 psig, the variation of the discharge of 1,500 m3/h gives a pressure of 130.85 psig, and the variation of the discharge of 500 m3/h gives a pressure of 24.26 psig. The results of the discharge variation are used to see the performance of the fire water network system. Performance with a discharge of 2,000 m3/h decreased by 9.74%, and performance with a discharge of 1,000 m3/h decreased by 8.81%.
oai:jurnal.ugm.ac.id:article/67366
2021-10-14T14:07:01Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/67366
2021-10-14T14:07:01Z
ASEAN Journal of Systems Engineering
Vol 5, No 1 (2021): ASEAN Journal of Systems Engineering; 1-8
OPTIMIZATION AND TECHNO ECONOMIC STUDY OF PLASTIC WASTE BENEFICIATION WITH PRODUCTION SIMULATION APPROACH CASE STUDY AT CV. PANDU KENCANA JOMBANG, EAST JAVA
Putra, Mahendra Rian; Universitas Gadjah Mada
Hidayat, Muslikhin; Universitas Gadjah Mada
Wibisono, Muhammad Arif; Universitas Gadjah Mada
2021-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/67366
en
The problem of plastic waste is getting more and more worrying day by day. Meanwhile, the industrial demand for plastics is also increasing. So we need a recycling business that can bridge this. Plastic waste in the environment can be decomposed, and the industry fulfills plastic needs at low prices. This study aims to analyze and optimize the business of recycling plastic waste into plastic ore to reduce the amount of plastic waste in the environment and obtain material benefits. The research method used is a case study in a plastic waste processing company with the collection of data needed to determine the formulation of the problem so that a mathematical model of linear equations can be formed, which then, through production simulations, will be obtained optimization. The results are then analyzed with a techno-economic study to determine the feasibility of the business.After optimization of production from simulations based on a mathematical model of linear equations, if the company wants to get maximum profit, then the company must produce PP Black A of 1022.73 kg, PP Black B of 852.27 kg, PP Gray of 625 kg. Meanwhile, PP Gray Jumbo should not be produced. Based on the techno-economic study, the feasibility analysis before optimization was obtained as ROIa=23.40%, ROIb=23.24%, POTa=2.99 years, POTb=3 years, BEP=36.07%, SDP=23.98% LANG=4.1, DCFRR=18.8 %. Then the feasibility analysis after optimization is ROIa=29.88%, ROIb=29.73%, POTa=2.5 years, POTb=2.51 years, BEP=31.03%, SDP=20.63%, LANG=4.1, DCFRR=24.85%.
oai:jurnal.ugm.ac.id:article/69217
2022-02-21T06:22:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/69217
2022-02-21T06:22:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 2 (2021): ASEAN Journal of Systems Engineering; 31-38
PRODUCT CLUSTERING ANALYSIS ON THE MARKETPLACE USING K-MEANS APPROACH (CASE STUDY: SHOPEE)
Ulfa, Maria Arista; Universitas Gadjah Mada
Sulistyo, Selo; Universitas Gadjah Mada
Hidayat, Muslikhin; Universitas Gadjah Mada
2021-10-31 05:06:20
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/69217
Department of Systems Engineering, Industrial Concentration
Shopee Product; Web Scraping; K-Means Clustering
(Selo Sulistyo, Universitas Gadjah Mada, Faculty of Engineering, Department of Electrical Engineering and Information Technology; Muslikhin Hidayat, Universitas Gadjah Mada, Faculty of Engineering, Department of Chemical Engineering)
en
The business world has experienced a paradigm shift towards a more modern concept. Many business processes are carried out through the internet or commonly known as e-commerce, by utilizing a platform known as Marketplace. One of the marketplaces that are quite well-known and in great demand in Indonesia is Shopee. The high online shopping activity in the current marketplace indirectly encourages business actors to understand the online market. However, one of the obstacles that are quite often faced by sellers, especially new sellers who are starting to enter the digital realm, is the emergence of confusion in the selection of products to be sold due to a lack of information regarding the demand for what products are in demand in the market.The process of searching for information related to the demand for products of interest is carried out through clustering analysis to find out the groups of products that are of interest to those that are less attractive to the public. The data used is product data from 6 categories in the Shopee market which was taken using web scraping techniques. The clustering processes used the K-means approach by determining the number of K and the optimal center point through the calculation of Sum Square Error (SSE) by looking at the elbow graph. The final results show the optimal number of K clusters that are different in each category, namely in category women’s clothing, men’s clothing, and electronics are at K=4 then for products in the category of Muslim fashion, care & beauty and household appliances are at K=3. Based on the validation results using the Davies Bouldin Index, values were obtained in6 categories, namely 0.391, 0.438, 0.414, 0.357, 0.387, and 0.377, which means that the cluster structure and the level of information formed in each category using the K-Means method is quite good.
oai:jurnal.ugm.ac.id:article/71999
2022-02-21T06:22:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/71999
2022-02-21T06:22:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 2 (2021): ASEAN Journal of Systems Engineering; 44-50
UTILIZATION OF OIL PALM EMPTY FRUIT BUNCHES AS MULCH IN COMMUNITY OWNED OIL PALM PLANTATIONS (CASE STUDY IN SIMARDONA VILLAGE, NORTH SUMATRA)
Harahap, Annisa Fitri; Universitas Gadjah Mada
Hidayat, Muslikhin; Universitas Gadjah Mada
Suhanan, Suhanan; Universitas Gadjah Mada
2021-12-30 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/71999
Master in System Engineering
Oil Palm Empty Fruit Bunches, Mulching
Muslikhin Hidayat, Suhanan, Gadjah Mada University; Master in System Engineering, Gadjah Mada University)
en
Solid Waste Oil Palm Empty Fruit Bunches have high nutrients, which significantly determine oil palm growth rate and production. Each nutrient has its role and can show specific symptoms in plants if their availability in the soil is very lacking. Dry oil palm land and the difficulty of procuring chemical fertilizers for the community that owns oil palm plantations in Simardona Village are expected to be overcome by the use of OPEFB. Utilization of Oil Palm Empty Bunches as Mulch was done manually in 4 research scenarios. Scenario 1 uses 2 kg of chemical fertilizers plus 250 kg of OPEFB, scenario 2 uses 2 kg of chemical fertilizers plus 300 kg of OPEFB, scenario 3 uses 2 kg of chemical fertilizers plus 350 kg of OPEFB, and scenario 4 uses 2 kg of chemical fertilizers plus 400 kg of OPEFB.The results obtained are that the humidity or moisture has increased from a value of 1 to 4. Therefore, it can be seen that the effect obtained from the use of more OPEFB makes the humidity higher. The calculation of the total cost of using OPOPEFB as mulch is obtained from the sum of the price of chemical fertilizers, the price of OPOPEFB, and workers' wages. The total cost after utilization of TKKS is IDR854,000.00. The total cost before using TKKS was IDR441,600,000. The difference in costs before and after the utilization of TKKS is IDR412,400.00, an increase in costs of 48%. The cost of using TKKS is higher than before using TKKS. The total harvest obtained before the use of OPEFB is 2,000 kg or IDR4,900,000. Meanwhile, after using OPEFB, the total yield obtained was 2,700 kg or IDR6,615,000. Production income increased by 26%.
oai:jurnal.ugm.ac.id:article/72021
2022-02-21T06:22:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/72021
2022-02-21T06:22:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 2 (2021): ASEAN Journal of Systems Engineering; 39-43
FEASIBILITY ANALYSIS AND DESIGN PROJECTION OF WASTE MANAGEMENT SYSTEM IN BALIKPAPAN
Khoirudin, Ubet; Universitas Gadjah Mada
Hidayat, Muslikhin; Universitas Gadjah Mada
Cahyono, Rochim Bakti; Universitas Gadjah Mada
2021-12-30 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/72021
System Engineering
Environmental Engineering
Ubet Khoirudin, Gadjah Mada University; Master Program of System Engineering, Department of Environmental Engineering
en
Waste generation in Balikpapan from 2016 to 2020 continues to increase by 443 to 482 tons per day. One of the efforts of DLH Balikpapan is to optimize the MRF and ITF facilities, as well as to analyze how much these facilities are needed to reduce waste generation at final disposal sites (Landfill) Manggar and enhance the durability of the landfill. The approach utilized in this study employs direct observation methods, such as data collection results on the amount of waste input and output, and secondary data, such as geometric methods and all data on waste generation in Balikpapan. The calculation of the feasibility and effectiveness analysis of the MRF inorganic waste processing facility using the recovery factor approach obtained 60.3%, while the ITF organic waste processing got a result of 45.7%.With the current condition, Manggar Landfill can be used until the end of 2025, Manggar Landfill can be used until the end of 2025. By optimizing garbage processing in these two facilities, the MRF has expanded the service coverage to 3 urban villages and has a projected age of up to 2033. It will be optimized for ITF processing facilities by utilizing process biogas. The primary objective of this research is to determine how many additional processing sites are needed starting with household waste sources thus, the calculation findings show that an additional six units of MRF facilities and ten units of ITF facilities are required. As a result, with the addition of inorganic and organic waste processing sites, Manggar's Landfill estimated age is extended until 2028.
oai:jurnal.ugm.ac.id:article/72411
2022-12-31T15:49:15Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/72411
2022-12-31T15:49:15Z
ASEAN Journal of Systems Engineering
Vol 6, No 1 (2022): ASEAN Journal of Systems Engineering; 1-5
IMPLEMENTATION OF IMAGE CLASSIFICATION USING CONVOLUTIONAL NEURAL NETWORK (CNN) ALGORITHM ON VEHICLES IMAGES
https://journal.ugm.ac.id/ajse/article/download/72411/243598
Nurhadi, Muhammad; Gunadarma University
Purnomo, Joko; Gunadarma University
2022-07-22 22:32:21
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/72411
Convolutional Neural Network, Image Classification, Python, Images
en
The use of surveillance cameras for most agencies only relies on video recordings and storing them for a certain time. The use of this surveillance camera can be applied to determine the type of vehicle even if the camera is not in the right position. Regarding the background of the problem, this research will use the Convolutional Neural Network (CNN) algorithm, which is part of Deep Learning with the help of Keras Library and TensorFlow, to carry out the learning process on videos captured by surveillance cameras so that it can detect images from 3 types of vehicles. The dataset used is 100 images of motorcycles, 100 images of cars, and 100 images of buses. The method used is the Image Classification Method, and the model used is the best model selected from several experiments. Researchers used training and test data distribution, namely 80% and 20%. The best results were obtained with an accuracy rate of 96.49% using epoch 100, learning rate 0.001, and batch size 32. Meanwhile, vehicle images produced image accuracy for motorcycle images when using test data from outside the dataset is 78.92%, car image is 81.71%, and bus image is 82.26%.
oai:jurnal.ugm.ac.id:article/72461
2022-02-21T06:22:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/72461
2022-02-21T06:22:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 2 (2021): ASEAN Journal of Systems Engineering; 51-55
MODEL OF VEHICLE ROUTING PROBLEM WITH SPLIT DELIVERY, MULTI TRIPS, MULTI PRODUCTS AND COMPARTMENTS FOR DETERMINING FUEL DISTRIBUTION ROUTES
Ramadhani, Dinda Safitri; Universitas Gadjah Mada
Masruroh, Nur Aini; Universitas Gadjah Mada
Waluyo, Joko; Universitas Gadjah Mada
2021-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/72461
Engineering
Vehicle routing problem, Split delivery,Multi trips, MILP
Nur Aini Masruroh, Department of Mechanical and Industrial Engineering, Faculty of Engineering, Gadjah Mada University; Joko Waluyo, Department of Mechanical and Industrial Engineering, Faculty of Engineering, Gadjah Mada University
en
The industrial development in Indonesia encourages companies to have high sensitivity in competing to meet consumer demands promptly by considering minimum distribution costs. One of the factors that can affect distribution costs is route determination. Determining the distribution route is the Vehicle Routing Problem (VRP). The purpose of VRP is to arrange the order of distribution routes to produce a minimum total distance. This study aims to determine the fuel distribution route at TBBM Rewulu in one delivery period to obtain the optimal distribution route and minimize the vehicle mileage. Delivery is carried out using three types of tanker trucks with heterogeneous capacities. This study uses a mathematical model of Mixed Integer Linear Programming (MILP) by considering split delivery, multi trips, multi-products, and compartments.The branch and bound method in the LINGO solver has been used to solve this problem. This model was tested on a simple case using data of 8 customers with different distances and demand shipped by truck. The results obtained indicate that no boundaries are violated, and all consumers are served. The mathematical model built is still general, so it can solve similar cases. A model can be developed for further research by adding VRP variants such as time windows and adding the product types to represent the entire existing system.
oai:jurnal.ugm.ac.id:article/72462
2022-02-21T06:22:58Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/72462
2022-02-21T06:22:58Z
ASEAN Journal of Systems Engineering
Vol 5, No 2 (2021): ASEAN Journal of Systems Engineering; 56-62
POTENTIAL STUDY OF PHOTOVOLTAIC POWER STATIONS TO MEET ENERGY NEEDS OF FUEL CELL UNITS IN BARU PANDANSIMO BARU BEACH OF BANTUL, YOGYAKARTA
Kuncoro, Ely Afridiana; Master Program of System Engineering, Faculty of Engineering, Universitas Gadjah Mada
Budiman, Arief; Departemen of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada
Waluyo, Joko; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada
2021-12-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/72462
Prof. Ir. Arief Budiman, M.S., D. Eng., IPU, Department of Chemical Engineering; Ir. Joko Waluyo, M.T., Ph.D., IPM., Department of Mechanical and Industrial Engineering; Staff of Master Program of System Engineering, Universitas Gadjah Mada
en
Energy needs are increasing rapidly along with population growth, increasing population activity, and massive development in technology. However, a current energy source is mainly from fossil energy. This condition is inversely proportional to fossil energy stock, decreasing year by year as a natural condition of non-renewable energy. On the other hand, fossil energy damages the environment by its pollution, such as deforestation and air and atmospheric pollution in the form of greenhouse gas emissions. For this reason, the world needs another source of energy that could replace fossil energy as a source and is also environmentally friendly. New and renewable energy could be the solution.Indonesia has plenty amount of new and renewable energy potential. However, renewable energy is weather-dependent, thus requiring storage technology to store the energy. The current common storage technology is battery technology. This technology has some weaknesses: limited capacity, high cost, less flexibility, expensive, and short lifetime. Another storage technology with high flexibility, easy transport, high amount capacity, long lifetime, and wide usage is needed. Hydrogen storage appears to meet all these requirements.This study aimed to calculate the optimum potential of photovoltaic power stations at Baru Pandansimo Beach of Bantul, Yogyakarta, as an energy source to produce hydrogen as a storage energy system. The simulations are done using HOMER software were carried out in three photovoltaic power station scenarios: fixed-tilt, single-axis tracker, and dual-axis tracker, and showed that the fixed-tilt photovoltaic power station scenario is the most optimal design and architecture. With total capacity reaching 7.8 MWp potential to be built at Baru Pandansimo, it could generate 11,657,704 KWh/year electrical energy with an NPC value of USD 8.29 M, and a COE of 0.0420 USD/KWh. This electrical energy could produce 213,288.06 kilograms of H2 at a 2.3 USD/kg production cost.
oai:jurnal.ugm.ac.id:article/73662
2022-12-31T15:49:15Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/73662
2022-12-31T15:49:15Z
ASEAN Journal of Systems Engineering
Vol 6, No 1 (2022): ASEAN Journal of Systems Engineering; 6-11
POROUS CARBON FROM PINEAPPLE PEEL AS ELECTRODE MATERIAL OF SUPERCAPACITOR
Elean, Samuel; Master in System Engineering, Faculty of Engineering, Universitas Gadjah Mada
Suhanan, Suhanan; Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada
Ariyanto, Teguh; Chemical Engineering Department, Universitas Gadjah Mada
2022-07-22 22:32:21
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/73662
Pineapple peel; Porous carbon; Electrode material; Supercapacitors
en
Porous carbon from biomass has a great potential to be developed. Biomass as a resource is renewable, abundantly available, and cheap. One application of porous carbon is as an electrode material of supercapacitor due to its advantageous pore properties such as high specific surface area and pore volume. This research prepared porous carbon material from pineapple peel waste and tested it as a supercapacitor electrode. The research steps were material preparation, conversion of pineapple peel to porous carbon, and characterization, including material characterization and electrochemical characterizations. Pineapple peel (under 80 mesh size) was pre-carbonized by hydrothermal method at 1900C for 2 hours under a subcritical condition. After that, biochar was pyrolyzed at 9000C and activated using CO2/N2 (KB-900-50). As a reference, biochar was also pyrolyzed under a nitrogen atmosphere at 9000C without activation (KB-900). Produced porous carbon was characterized (i) pore structures, e.g., specific surface area, average pore diameter, and total pore volume using N2-sorption analysis, and (ii) electrochemical performance, e.g., cyclic voltammetry and galvanostatic method using 1 M H2SO4 electrolyte solution. The result showed that the activation process effectively increased the porosity of porous carbon. Material (KB-900-50) possesses a high surface area of 648 m2/g and a high capacitance value of 78 F/g.
oai:jurnal.ugm.ac.id:article/75149
2022-12-31T15:49:15Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/75149
2022-12-31T15:49:15Z
ASEAN Journal of Systems Engineering
Vol 6, No 1 (2022): ASEAN Journal of Systems Engineering; 12-20
FORECASTING ANALYSIS ON ELECTRICITY DEMAND IN THE SPECIAL REGION OF YOGYAKARTA UNDER THE IMPACT OF THE COVID-19 PANDEMIC
Aprieza, Feikal; Department of Systems Engineering, Universitas Gadjah Mada
Ridwan, Mohammad Kholid; Department of Nuclear Engineering and Engineering Physics, Universitas Gadjah Mada
Wilopo, Wahyu; Department of Geological Engineering, Universitas Gadjah Mada
2022-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/75149
Systems Engineering
Electricity; Forecasting; Energy Demand; COVID-19; Economic Recovery
en
The COVID-19 pandemic as a global pandemic on 2020 has encouraged the Indonesian Government to establish pandemic response policies in many provinces. The policies that had been restricting mobility during the pandemic showed significant impacts in many aspects in the Special Region of Yogyakarta. A shifting pattern in electricity consumption can be seen as the growth of economic sectors in the GDP encountered contraction after the decline of community mobility. Electricity demand forecasting is required to analyze the impact of the COVID-19 pandemic by applying three scenarios, specifically an unlikely pandemic scenario or Business As Usual (BAU), moderate scenario (MOD), and optimistic scenario (OPT). Also, the household, industrial, business, social, and public sectors are analyzed in order to see the shifting pattern in electricity consumption through the scenarios that have been given. Energy modeling is conducted with Low Emission Analysis Platform (LEAP) software to analyze electricity demand forecasting from 2019 to 2030 based on the three scenarios. The results show that the electricity demand in 2030, according to BAU, MOD, and OPT scenarios, in the amount of 5,301.58 GWh, 4,489.11 GWh, and 4,648.12 GWh, respectively. According to the MOD and OPT scenarios, the electricity demands of the household and industrial sectors will increase relative to the BAU scenario. Meanwhile, according to both scenarios, the electricity demands of the business and social sectors will decrease. In the public sector, the MOD scenario shows the decline of electricity demand relative to the BAU scenario, while OPT scenario shows the opposite.
oai:jurnal.ugm.ac.id:article/75615
2022-12-31T15:49:38Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/75615
2022-12-31T15:49:38Z
ASEAN Journal of Systems Engineering
Vol 6, No 1 (2022): ASEAN Journal of Systems Engineering; 21-26
BIOREMEDIATION OF TOFU INDUSTRY LIQUID WASTE USING EFFECTIVE MICROORGANISM-4 (EM4) SOLUTION (CASE STUDY OF TOFU SENTOSA INDUSTRY, YOGYAKARTA)
Warnares, Septina Avia; Universitas Gadjah Mada
Kamulyan, Budi; Universitas Gadjah Mada
Yuliansyah, Ahmad Tawfiequrrahman; Universitas Gadjah Mada
2022-07-29 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/75615
Liquid Waste; Tofu; Microorganism-4; Bioremediation
en
Liquid waste produced from the tofu industry contains high contaminants such as BOD, COD, TDS, pH, and TSS, which can pollute the environment. Therefore, pollutants should be decreased before being discharged into the environment. Tofu waste treatment is constrained by adequate technology and high costs. Biological treatment is one of the best treatments, a waste treatment process by utilizing microorganisms. This research used the intermittent anaerobic-aerobic process and was conducted on a laboratory scale using a tank made of glass 25 cm long, 20 cm wide, 15 cm high, and a tank of 30 cm long and 15 cm wide 15 cm high. The treatment process in this research used samples adding EM4 solution with a concentration of 1/20 and samples without EM4. The stages of the research were carried out consisting of preliminary research, core research, and further research. Preliminary research used 1/20 (5%) concentration of EM4 and was fermented for four days at room temperature. As a result, the pH value decreased from 6 to 4, and the presence of a white layer above the surface. The average pollutant reduction efficiency value in the sample with Effective Microorganism-4 (EM4) and without the Effective Microorganism-4 (EM4) was tested at different duration times for each parameter. The efficiency reduction value of the sample with EM4 of BOD was 87.14%, COD 74.68%, TSS 15.88%, and TDS -17.91%, while in the sample without EM4 of BOD value was 76.54%, COD 67.78%, TSS 22.77%, TDS -16.78% with a time process of 41st day.
oai:jurnal.ugm.ac.id:article/76128
2022-12-31T15:49:15Z
ajse:ART
v2
https://journal.ugm.ac.id/ajse/article/view/76128
2022-12-31T15:49:15Z
ASEAN Journal of Systems Engineering
Vol 6, No 1 (2022): ASEAN Journal of Systems Engineering; 27-32
FACTOR ANALYSIS OF HEALTHY FOOD PHOTOGRAPH
https://journal.ugm.ac.id/ajse/article/download/76128/262404
Laras, Nindya Laksita; Universitas Gadjah Mada
Ushada, Mirwan; Universitas Gadjah Mada
Wijayanto, Titis; Universitas Gadjah Mada
2022-07-31 00:00:00
Submission of an original manuscript to the ASEAN Journal of Systems Engineering (AJSE) will be taken to mean that it represents original work not previously published, that it is not being considered elsewhere for publication; that the author is willing to assign copyright to the ASEAN Journal of Systems Engineering (AJSE) as per a contract that will be sent to the author just prior to the publication and, if accepted for publication, it will be published in print and online and it will not be published elsewhere in the same form, for commercial purposes, in any language, without the consent of the ASEAN Journal of Systems Engineering (AJSE). This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
url:https://journal.ugm.ac.id/ajse/article/view/76128
Industrial
Healthy Food Photos; Kansei Engineering; Semantic Differential; Factor Analysis
Directorate of Business Development and Incubation at Gadjah Mada University
en
Lockdown is one way to reduce the transmission rate of COVID-19. Nevertheless, on the other hand, lockdowns also increase human psychological problems to cause the emergence of emotional eating. In addition, social media exposure that presents food photos can trigger the desire to eat. However, this only applies to high-fat and high-calorie foods, while healthy foods do not have the same stimuli. Therefore, more research is needed on the properties of healthy food photos desired by consumers in order to be able to create or design healthy food photos with an effect that resembles photos of high-fat and high-calorie foods. This study employed the Kansei Engineering approach in designing healthy food photos. Through Kansei Engineering, we can determine the nature of healthy food photos consumers want. The type of Kansei engineering used in this study was Kansei Engineering Type I and was limited to the Semantic Space stage. The process of factor reduction from the results of the semantic differential was carried out by using factor analysis to obtain the most critical factors related to healthy food photos. The semantic space spanning resulted in 23 pairs of Kansei words that related and represented healthy food photos. Based on the factor analysis results, these Kansei words were then into 6-factor groups. Each of the factor groups was represented by the Kansei word pair with the highest loadings value. The selected pair of Kansei words showed that healthy food photos could be represented by Kansei words attractive, contrast, proper lighting, neat, high-quality image, and straightforward.