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ASEAN Journal of Systems Engineering
Published by Universitas Gadjah Mada
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
ASEAN Journal of Systems Engineering (AJSE) is published by Master Program of Systems Engineering, Faculty of Engineering, Universitas Gadjah Mada as a mean for publishing scientific works in form of research papers, literature study, or scientific review on published articles, about systems engineering especially in the field of energy, industry and environment. The journal is published twice a year (June and December), in both print and online versions.
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering" : 7 Documents clear
HYBRID POWER SYSTEM MODELING FOR ELECTRICITY SYSTEM IN SUMBAWA DISTRICT (HYBRID POWER SYSTEM MODELING) sumartono -; Ahmad Agus Setiawan; Bertha Maya Sopha
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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
GREYWATER MANAGEMENT OF PANTAI BARU PANDANSIMO KABUPATEN BANTUL FOR CREATING ZERO WASTE ZONE Agung Eka Saputra; Arif Kusumawanto; Siti Syamsiah
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.
THE DETERMINATION OF LANDFILL (TPA) ALTERNATIVE LOCATION IN WEST TULANG BAWANG DISTRICT OF LAMPUNG PROVINCE Desy Renisita; Sunjoto Sunjoto; Sarto Sarto
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.
STUDY OF CHARACTERISTICS OF GASIFICATION PROCESS OF VARIOUS BIOMASS IN A DOWNDRAFT GASIFIER Agus Aktawan; Agus Prasetya; Wahyu Wilopo
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.
MAPPING POTENTIAL FOR WIND ENERGY IN COASTAL MARINE SENGGIGI FOR RENEWABLE ENERGY DEVELOPMENT SUPPORT Muliadi -; Eliza Ruwaidah; Akhmad Asyari
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.
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) Aspita Dyah Fajarsari; Muhammad Sulaiman; Bakti Setiawan
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.
DESIGN ENGINEERING DETAIL OF SONO (OPAK RIVER) MICROHYDRO IRRIGATION PROJECT PARANGTRITIS KRETEK VILLAGE IN THE DISTRICT OF BANTUL OF YOGYAKARTA Arief Budiyanto
ASEAN Journal of Systems Engineering Vol 3, No 1 (2015): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

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Abstract

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.

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