Alimuddin, Alimuddin and H.Tambunan, Armansyah and Machfud, Machfud and Novianto, Andi (2018) Preliminary Analysis of Single-Flash Geothermal Power Plant by Using Exergy Method: A Case Study from Ulubelu Geothermal Power Plant in Indonesia. International Journal of Renewable Energy Research (IJRER, 8 (3). pp. 1685-1696. ISSN 1309-0127

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Abstract

Indonesia is blessed with abundance of renewable energy sources, including geothermal, which needs to be used effectively to generate much required electric power in the country. Ulubelu Geothermal power plant is one of the newly installed facilities in Indonesia. Analysis on its performance is critical for further improvement of the generation efficiency. The main objective of this study is to analyze the performance of Ulubelu Geothermal power plant by using exergy analysis and to optimize the power output of the plant. The results showed that about 19.2% of the total mass flow steam from production wells was used to produce about 54,180 kW power, and around 80.8% of the mass flow is reinjected to the reservoir through the injection well. The rate of exergy input was 131,643 kW, out of which 83,364 kW was used for rotating the turbine. Exergy efficiency of the plant was 41.16%. Demister had the highest efficiency of 95.98%, while the highest exergy loss of 36.39% occurred at the separator. The optimization result indicated that the power output can be increased to 2600 kW if the steam pressure can be increase to 7.598 bar and the condenser pressure decreased to 0.06503 bar.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User: ALIMUDDIN MUCHTAR
Date Deposited: 29 Jan 2019 04:18
Last Modified: 29 Jan 2019 04:18
URI: http://repository.lppm.unila.ac.id/id/eprint/10529

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