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INDONESIA
Jurnal Teknologi Energi
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Computer Science & IT Energy
Arjuna Subject : -
Articles 126 Documents
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KINERJA MESIN BENSIN BERDASARKAN PERBANDINGAN PELUMAS MENERAL DAN SINTETIS Silaban, Mawardi
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Uji kinerja mesin bensin berdasarkan perbandingan pemakaian pelumas mineral dan sintetis disajikan dalam tulisan ini. Pengujian dilakukan pada mesin dengan menggunakan pelumas mineral pada putaran 1200, 1600 dan 2000 rpm selanjutnya dihitung kebutuhan pemakaian bahan bakar spesifik, daya poros dan efisiensi thermalnya. Kemudian dengan menggunakan mesin yang sama pengujian dilakukan dengan menggunakan pelumas sintetis pada variasi putaran yang sama seperti tersebut diatas, dan selanjutnya dianalisis serta dibandingkan hasil yang diberikan. Dari hasil pengujian yang dilakukan bahwa mesin dengan menggunakan pelumas mineral mengkonsumsi bahan bakar spesifik 0,524 1,043 kg/kW-jam, dan dengan menggunakan pelumas sintetis 0,457 0,604 kg/kW-jam. Daya poros yang dihasilkan dengan menggunakan pelumas mineral 1,985 3,465 kW, dan denganmenggunakan pelumas sintetis 2,038 3,519 kW. Efisiensi thermal dengan menggunakan pelumas mineral 8,04 15,99 %, dan dengan menggunakan pelumas sintetis 15,21 17,56 %.
BIOGAS PRODUCTION AND ENGINE CONVERSION FROM DIESEL ENGINE TO BIOGAS ENGINE FOR LIGHTING IN RURAL AREA Tun, Seint Thandar
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

The research of alternative fuels implemented in internal combustion engines are becoming the subjects of interest nowadays. This paper describes a production of biogas from cow dung, diesel engine conversion process with piston modification of ZH1115 diesel engine. To produce biogas, the usual practice is to mix water with some organic material, such as cow dung (a free source of the appropriate micro-organisms). The slurry is placed in a leak-proof container (called a digester) and leaves it to ferment. After several days at suitable temperature, sufficient methane will have formed to make a combustible gas. Fix dome type of biogas plant is chosen in this gas production for cost saving and to produce sufficient gas at lower temperature. The biogas engine which are modified from diesel engine emphases the ignition system, gas governing and carburetion systems along with a change in compression ratio, in some cases also a change in the combustion chamber. Since diesel engine cannot be operated by biogas alone, this paper covers the conversion of diesel to spark ignition engine i.e. conversion of four stroke of ZH1115 diesel engine to biogas engine based on 30 biogas inlet holes which was recommended by the experienced designers. This paper also describes methods of reducing compression ratio, changing ignition system with timing and fueling system, the comparisons of technical parameters and performance between ZH1115 diesel engine and converted biogas engine. It describes the criteria of technological selections, engineering aspects and short term and long term plans for lighting. The goal to develop and implement BIOGAS engine and use biogas as the renewable energy and bio-fertilizer is to control pollution, to protect environment, to develop rural area and also to reach the ambitious emissions goals and to reduce dependence on imported foreign oil.
OPTIMALISASI ENERGI MEKANIK PENGEPRESAN BUAH MARKISA DAN FORMULA MEMBENTUK SIFAT EFFERVESCEN TABLET BUAH MARKISA ansar, ansar
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Tujuan penelitian ini adalah menentukan pengaruh energi pengepresan dan formula terhadap sifat tablet effervescen buah markisa. Penelitian dilakukan dengan memvariasi tekanan pengepresan dan formula bahan. Formulasi bahan dilakukan dengan memvariasi konsentrasi asam sitrat dan natrium bikarbonat dengan rasio berat 1:3, 1:2, 1:1, 3:1, 2:1 dan 2:3, sedangkan variasi energi mekanik pengepresan adalah 1000, 2000, 3000, 4000 dan 5000 N. Sifat tablet effervescen yang dibahas dalam evaluasi adalah kekerasan dan kelarutan. Hasil penelitian menunjukkan bahwa energi pengepresan berpengaruh secara signifikan terhadap tekstur dan kelarutan tablet effervescen buah markisa. Variasi formula tidak berpengaruh secara signifikan terhadap tekstur dan kelarutan tablet effervescen buah markisa. Sifat tablet yang baik adalah yang dibuat pada energi pengepresan 3000 N dengan rasio konsentrasi asam sitrat dan natrium bikarbonat 1:2.
ANALISA PERFORMANSI KOLEKTOR UDARA PADA SISTIM PENGERING KAYU DENGAN SUMBER ENERGI HIBRID SURYA - BIOMASSA Sumarsono, Markus
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Suatu kolektor pemanas udara dengan luas permukaan 230,4 m2 telah dipasang terintegrasi dengan ruang pengering untuk mengeringkan 100 m3 kayu. Kolektor yang digunakan adalah tipe matriks dengan absorber terbuat dari lembaran serat karbon hitam. Kolektor bekerja bersama dengan boiler biomassa memasok energi panas ke ruang pengering. Hasil percobaan menunjukkan bahwa efisiensi termal kolektor per siklus pengeringan berkisar antara 20 31%.
MEMBANGUN STRATEGI PENGEMBANGAN FUEL CELL DI INDONESIA: TINJAUAN RINGKAS hariyanto, hariyanto
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Teknologi fuel cell (sel bahan bakar) dewasa ini masih terus berkembang pesat dan disempurnakan. Hampir semua negara maju memberikan anggaran yang cukup besar untuk penelitian teknologi sel bahan bakar dari mulai pengembangan hingga proyek percontohan agar teknologi sel bahan bakar dapat segera memasuki ajang pasar komersial secepat mungkin. Dalam tulisan ini secara ringkas ditinjau pendekatan untuk penyusunan strategi pengembangan teknologi sel bahan bakar di Indonesia, khususnya terkait dengan peningkatan kerjasama antar pelaku peneliti dan pengembang sel bahan bakar di Indonesia. Beberapa pertimbangan awal yang bisa dijadikan dasar pada pengembangan sel bahan bakar di Indonesia a.l.: kemampuan sumber daya manusia, perkembangan teknologi material, ketersediaan sumberdaya alam, serta arah aplikasi yang tepat dan potensi pasar.
DIMETHYL ETHER (DME) DARI BATUBARA SEBAGAI BAHAN BAKAR GAS ALTERNATIF SELAIN LPG anam, ahsonul
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Makalah ini menguraikan cadangan batubara Indonesia yang berlimpah, konsumsi, produksi dan ekspor. Diuraikan pula secara ringkas rumitnya merancang pembangunan dan menentukan prioritas dalam penyusunan RAPBN, termasuk besarnya subsidi BBM yang harus ditanggung setiap tahun. Minyak tanah mengambil porsi subsidi terbesar di banding yang lain, karena itu, pemerintah bersama DPR telah bersepakat untuk menghapuskan subsidi BBM secara bertahap, dan mengalihkan penggunaan minyak tanah ke LPG mengingat cadangan gas Indonesia relatif lebih besar ketimbang minyak bumi, meski sebagian juga sudah dikonsesikan kepada pihak asing. Mengkaitkan masalah energi dimasyarakat dan potensi batubara ini telah dipikirkan upaya untuk memproduksi DME sebagai bahan bakar alternatif untuk memasak pada skala rumah tangga.
ENERGY POLICY FOR A SUSTAINABLE AND SECURE STATIONARY ENERGY SECTOR outhred, h
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Human societies now face interlinked challenges in meeting their stationary energy requirements: Tightening flow constraints for crude oil and later natural gas[1] with associated upward pressure on prices of fossil fuels and the many goods and services that depend on them.Worsening environmental impacts, at the global level due to climate change emissions from the use of fossil fuels, as well as a wide variety of local and regional impacts [2] Water quantity and quality concerns due to environmental and human pressures [2,3]
WIND FARM DESIGN FOR OELBUBUK IN EAST NUSA TENGGARA, INDONESIA suharta, herliyani; Pakpahan, Sahat; Martosaputro, Soeripno
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Electrification ratio of NTT is 28.7 % in 2008. Technical and economical assessments to investigate the possibilities to implement wind farm in East Nusa Tenggara (NTT) province is directed to contribute in the effort to raise the electricity ratio in this province. Some areas are having yearly average wind speed greater than 5 m/sec and the wind power density greater than 300 Watt/m2 . Wind farm is proposed to reduce local dependency to Diesel Power Plant (DPP) and to exerting an effort to reduce CO2 emission. The result of survey, Wind Energy Conversion (WEC) selection and simulation to get wind farm configuration for Oelbubuk, in South Central Timor (TTS) Regency in NTT is described. The evaluation of three different WEC having capacity greater than 250kW per unit and its formation are described. The assessment of electricity facilities of DPP in SOE city, its load profile in 2008 and the possible of interconnection to wind farm are described.
SISTEM ENERGI ANGIN SKALA KECIL UNTUK PEDESAAN Ginting, Dines
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Energi angin adalah sumber energi terbarukan yang telah dimanfaatkan selama lebih dari seabad. Pemanfaatan teknologi energi angin skala kecil dapat diterapkan di pedesaan atau didaerah terpencil yang tidak memiliki jaringan listrik. Potensi angin yang tersedia merupakan dasar pertimbangan desain dan penerapan sistem. Kincir angin sederhana telah digunakan secara luas terutama untuk pemompaan pada tambak garam dan di pedesaan. Pemanfaatan kincir angin atau turbin angin lebih menguntungkan dibandingkan dengan pemanfaatan mesin diesel, photovoltaik atau penambahan jaringan listrik. Biaya awal sistem energi angin yang belum terjangkau oleh masyarakat pedesaan perlu dicarikan solusinya. Makalah juga menguraikan penerapan berbagai teknologi energi angin di Indonesia dan upaya pengembangan sistem dan penyebarluasannya.
MEDCO BIOETHANOL PLANT IN KOTABUMI LAMPUNG AND ITS PRODUCTION IMPACTS TO THE SURROUNDING PEOPLE suharta, herliyani
185P -3466
Publisher : Agency for the Assessment and Application of Technology

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Abstract

Government of Indonesia (GOI) has stated its intention to support the development of alternative energy sources including biofuel. As the basis for such a development, GOI through Ministry of Energy and Mineral Resources (MEMR) has discussed it in many energy forums in order to shape a national blueprint for bioethanol and biodiesel. In 2004, total consumption of fossil fuel: gasoline, diesel, kerosene, pertamax and pertamax plus, were 60.06 million kilo Liters (kL), while total production from the existing refineries in Indonesia is only 44.9 million kL in 2005, leaving a deficit that should be imported. Responding this situation, Medco Energi is committed to invest and initiate its entry by developing Indonesia s first multi-feedstock bioethanol production plant that able to produce ethanol from cassava-derived starch and sugarcane molasses. Biogas produced by the waste treatment facility will be used to optimize the overall energy efficiency. By mid of 2007, it is planned to produce 180 kL industrial-grade ethanol daily and a fuel-grade ethanol will be produced as the market grow. The paper is also described the socio economics and macroeconomic impact of this activities that representing a case study in developing countries that giving subsidize for fossil fuel to their people.

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