cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota adm. jakarta pusat,
Dki jakarta
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
 4   5   6   7   8 
IMPACTS OF LOW RANK COAL UTILIZATION IN THE COAL FIRED POWER PLANT THAT WAS DESIGNED TO USE SUB - BITUMINOUS COAL cahyadi, cahyadi; Yurismono, Hari
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (317.566 KB)

Abstract

Most of the existing coal fired power plants in Indonesia that have capacity of 400-600MW is designed using sub-bitumonous coal intake. This coal has a caloric value of 5,000 kcal/kg (a.r.). Considering the coal price of sub-bituminous tends to raise, some power plant have switched to use a low rank coal having a caloric value of 4,200 kcal/kg (a.r.). Indonesian Coal Index (ICI), in November, 2008 indicated that the coal having caloric value of 5,800; 5,000 and 4,200 kcal/kg (a.r.) are US$ 93, 68 and 41 per ton (FOB) respectively.  Low rank coal utilization in the existing coal fired power plant that was designed for the  sub-bituminous coal intake are reviewed both in technical and economic aspect and its impacts on the power plant performance.  
THE I3A FRAMEWORK – ENHANCING OFF-GRID PHOTOVOLTAIC ENERGY SERVICE DELIVERY IN INDONESIA Retnanestri, M; Outhred, H.; Healy, S.
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (869.689 KB)

Abstract

This paper describes an interdisciplinary research project to investigate the sustainability of off-grid Photovoltaic Energy Service (PVES) delivery in Indonesia. The paper describes results from the preliminary fieldwork undertaken in late 2002 and early 2003, more substantive fieldwork was carried out in 2005. The general objective of this research project is to understand how PVES can contribute to improving the life of rural Indonesian communities having no access to the electricity grid. It adopts an interdisciplinary approach that combines social and engineering perspectives to address sustainability issues. The I3A (Implementation, Accessibility, Availability, Acceptability) Sustainable PVES Delivery framework was developed to assess sustainability and was used to assess three off-grid PVES case studies in Lampung, West Java and Nusa Tenggara Timur (NTT) provinces. The overall objectives of the I3A framework are to acknowledge the interests of stakeholders, maximize equity, assure PVES continuity and institutionalize PVES by utilizing and enhancing pre-existing community resources to leave host communities with the capacity to meet evolving needs. A key conclusion is that, to be sustainable and equitable, off-grid PVES projects should be implemented in an institutional framework that provides sound project management and addresses PVES accessibility (financial, institutional and technological), availability (technical quality and continuity) and  acceptability (social and ecological).
OPTIONS FOR SOLAR DRYING SYSTEMS: PERSPECTIVE IN MALAYSIA Othman, M.Y.H.; sopian, k
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.439 KB)

Abstract

Solar drying provides an alternative to the use of fossil fuel. Solar drying system is one of the most promising applications of crop drying. However, there are problems associated with the intermittent natural of solar radiation and the low intensities of solar radiation. The problems can be remedied by the use of heat storage, auxiliary energy source, control system, larger surface collector and hybrid system. However, this will result in a high capital investment. Economic indicators such as cost ofmaintenance, payback period, internal rate of return can be used to calculate the economic of it application.This paper presents the experience in Malaysia on crop drying. We also present the performance of four solar assisted drying systems for crop drying using different collector types, (a) V-groove solar collector with cabinet dryer, (b) double-pass solar collector with porous media in the lower channel and a flat bed drying chamber, (c) Solar dehumidification system and (d) Photovoltaic-thermal solar drying system.
BERBAGAI BRIKET SAMPAH ALAM UNTUK BAHAN BAKAR TUNGKU HEMAT ENERGI (THE) S1 DAN S2 suharta, herliyani
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1421.324 KB)

Abstract

Kesulitan mendapatkan minyak tanah dan gas menyebabkan banyak ibu rumah tangga beralih ke kayu bakar. Makalah ini menguraikan hasil penelitian alternatif bahan bakar yang lebih hemat, mudah didapat/dibuat, serta menampilkan hasil percobaan penggunaan bahan bakar tersebut dalam Tungku Hemat Energi (THE) untuk merebus air. Beberapa tungku hemat energi dibahas secara singkat. Bentuk THE S1 dan THE S2 mungil dan ringan sehingga mudah dibawa-bawa untuk promosi ke daerah yang jauh. Perhitungan produksi massal diberikan sebagai masukan dalam menghitung harga unit menyesuaikan kemampuan dan fasilitas di suatu industri lokal. Perhitungan pendanaan ini mencakup upaya penyebar-luasannya melalui pendidikan masyarakat dan training for trainers. Diharapkan THE hasil riset ini akan teraplikasikan dan menyebar dengan cepat menampilkan aksi nyata menghemat penggunaan kayu di alam agar pohon-pohon di sekitar hunian tidak cepat habis dan menghindarkan daerah yang luas agar tidak cepat menjadi tandus.
PROFIL PENGGUNAAN ENERGI LISTRIK DI PABRIK TEH SKALA INDUSTRI SEDANG palaloi, sudirman
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (794.24 KB)

Abstract

Energi listrik di pabrik teh yang dievaluasi digunakan pada setiap proses produksi seperti pelayuan, penggilingan, fermentasi, pengeringan, sortasi hingga pengepakan. Dari hasil penelitian menunjukkan bahwa total konsumsi energi 1.702.975 kWh/tahun untuk memproduksi teh kering sebanyak 3.444.761 kg. Sumber energi berasal dari PLN dan PLTMH (Pembangkit Listrik Tenaga Mikro Hidro). Komposisi suplai energi dari PLN 29,56% dan PLTMH 70,4%. Biaya pembelian energi listrik dari PLN pada tahun 2007 rata-rata sebesar Rp. 1.232,12/kWh dan biaya energi PLTMH Rp. 264/kWh. Total biaya energi listrik (PLN + PLTMH) sebesar Rp. 458/kWh atau setara dengan Rp. 240/kg-teh.  Konsumsi energi spesifik (KES) di pabrik teh yang dievaluasi tahun 2007 adalah sebesar 0,48 kWh/kg. Nilai ini lebih baik dari tahun 2005 (0,54 kWh/kg) dan tahun 2006 (0,52 kWh/kg). Jika dibandingkan dengan pabrik di luar negeri nilai KES pabrik yang ditinjau lebih baik daripada India (0,65 kWh/kg) dan Srilangka (0,52 kWh/kg) namun masih lebih tinggi dari Vietnam (0,41 kWh/kg). Nilai KES akan menjadi lebih baik yang berada pada kisaran 0,5 kWh/kg apabila pabrik dioperasikan pada kapasitas produksi minimal 225 ton per bulan.  
RISK ANALYSIS FOR THE INFRASTRUCTURE OF A HYDROGEN ECONOMY Rosyid, O A
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.792 KB)

Abstract

Increasing scarcity of fossil fuels makes the deployment of hydrogen in combination with renewable energy sources or the utilization of electricity from full time operation of existing power stations an interesting alternative. A pre-requisite is, however, the safety of the required infrastructure is investigated and its design is evaluated with the associated risk to know, at least, the risks are not higher than that of existing supplies.  Therefore, a risk analysis considering its most important objects such as storage tanks, filling stations, vehicles as well as heating and electricity supplies for residential buildings was carried out. The last is considered as representative of the entire infrastructure. The risk analysis is based on fault and event tree analyses, wherever required, and consequence calculations using the PHAST code. The procedure for evaluating the risk and corresponding results will be presented taking one of the objects as an example.
IN-SITU CO2 CURRENT EFFICIENCY MEASUREMENT OF DIRECT ETHANOL FUEL CELL hariyanto, hariyanto
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (185.769 KB)

Abstract

In this present work, we carry out systematically study on catalyst for ethanol electrooxidation in direct ethanol fuel cell. For cathode catalyst we use a commercial catalyst of 40% Pt/C from ETEK. Catalysts were printed on to carbon paper of TGPH 060 and sandwiched into membrane electrode assembly (MEA) and then arranged in fuel cell with the geometric area 1.2 cm2. As an electrolyte, we used Nafion 117 from Du Pont. On-line Differential Electrochemical Mass Spectrometry (DEMS) measurement in fuel cell setup was carried out in order to determine the activity and selectivity which was indicated by result of Faradaic current and CO2 current efficiency of ethanol electro-oxidation respectively. PtRhCeO2/C was significantly improve the selectivity to form of CO2 in comparison to the commercial catalyst of 20% Pt/C from Alfa Aesar- Johnson Mattews . Increasing of  selectivity is shown by increase of CO2 current efficiency of ethanol oxidation of about 25  percent in comparison to references catalyst of 20% Pt/C Alfa Aesar-JM
COMPARING A WAY TO CALCULATE THE HEAT LOSS COEFFICIENT OF SOLAR FLAT PLATE COLLECTOR suharta, herliyani; M. Sayigh, A.; Nasser, S.H.
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.433 KB)

Abstract

The need for a simple solution to derive the total heat loss coefficient, UL , is unquestioned as this reduces time to compute the performance of investigated system, especially in atmosphere when practicality is highly needed. This paper describes a simulation and comparison of several ways to obtained UL  The assumptions used and the method are described briefly. The analysis of the result shows that the derived equation (10) applied for solar box cooker type HS is the simplest. The long field test has proved its simplicity and people can understand it easily in practice. This numerical experiment is provided for the readers to validate this simple equation as it can be a tool for the scientist who needs to transfer their knowledge to a wider education level in the context to popularize the application of renewable energy.
FUTURE PROSPECT OF CDM SOLAR COOKER PROJECT ACEH 1, INDONESIA suharta, herliyani
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.25 KB)

Abstract

Firewood in almost all rural areas uses firewood for cooking. Smoke exposure from firewood seriously affects the children's growth and the health of women, increasing woman burden and poverty. Its greenhouse gas (GHG) emissions contribute to global climate change. This is one of the greatest challenges of humanity. The CDM (Clean Development Mechanism) Solar Cooker Project in Sabang Islands and Badar city in South East Aceh was arranged to lay down a better energy path scenario for the future. Solar concentrator cookers "K14" and heat retaining containers named "Wonder box" will be transferred to the people. This project avoids 3.5 tonnes CO2 emissions per year per K14 and applies for a renewable crediting CER (carbon emission reduction) for 7 years period. The CER verification is described. Some views as a societal research finding within the CDM Solar Cooker Project Aceh 1 are described briefly.
PERFORMANCE OF SILICON SOLAR CELL WITH VARIOUS SURFACE TEXTURES Jahanshah, F; Sopian, K; Ahmad, I.; Othman, M.Y; Zaidi, S.H
185P -3466
Publisher : Agency for the Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.02 KB)

Abstract

The performance of solar cell with various surface texture patterns was reported. Wet, RIE, one and two dimensions texturing with and without the nitride antireflection coating were compared. An I-V tester calibrated by Sandia National Laboratory was used. The surface texture of the solar cells were as follows (a) solar cell with 2D texturing without nitride antireflection, (b) solar cell with 1D texturing with nitride antireflection (c) solar cell with 1D texturing without nitride antireflection, (d) solar cell with wet texturing without nitride antireflection, (e) solar cell with wet texturing with nitride antireflection (f) solar cell with RIE texturing with nitride antireflection. RIE and two dimension surface texturing showed the best output with maximum short density current of  0.042 mA/cm2 and of 0.045 mA/cm2 respectively.

Page 6 of 13 | Total Record : 126

 4   5   6   7   8 

Filter by Year

0000


Reset
Filter By Issues
All Issue