Preliminary analysis of dry-steam geothermal power plant by employing exergy assessment: Case study in Kamojang geothermal power plant, Indonesia

Rudiyanto, Bayu and Illah, Ibnu Atho and Pambudi, Nugroho Agung and Cheng, Chin-Chi and Adiprana, Reza and Imran, Muhammad and Huat Saw, Lip and Handogo, Renanto (2017) Preliminary analysis of dry-steam geothermal power plant by employing exergy assessment: Case study in Kamojang geothermal power plant, Indonesia. Case Studies in Thermal Engineering, 10. pp. 292-301. ISSN 2214157X

	Text (Hasil similarity) preeliminary_Turnitin.pdf - Supplemental Material Available under License Creative Commons Attribution Share Alike. Download (4MB)
	Text (Hasil Peer Review) 4 - Hasil Peer Review.pdf - Supplemental Material Restricted to Repository staff only Download (1MB)

Abstract

The objectives of this study are to perform the exergy analysis and ambient temperature optimization of the Kamojang geothermal power plant by employing Engineering Equation Solver (EES). The geothermal capacity is 55 MW and the field is vapor-dominated reservoir with temperature 245 °C. In the initial state temperature, pressure and mass flow data are collected from the plant operation. The study results show that system has overall efficiency of 35.86% which means that only 111,138.92 kW electrical power can be extracted from 309,000 kW thermal power being produced by 10 production wells of Kamojang. This low efficiency is due to irreversibility associated with different processes and components in the system. The largest irreversibility occurs in condenser due to which 53% of total energy is disposed into the environment. Ambient temperature at Kamojang varies from 17 to 20 °C. The effect of this variation in temperature is also investigated and it is observed that higher temperature does not have any significant impact on system efficiency.

Actions (login required)

View Item