Heat Exchanger Design on the Geothermal Binary Cycles in Dieng Geothermal Area, Indonesia
- Key words
- geothermal energy, low-intermediate temperature, binary cycles, working fluid, n-pentene and brine
- Conference
- World Geothermal Congress
- Year
- 2015
- Session
- Power Generation
- Language
- English
- Paper number
- 26018
Full text
1211 KB, opens in a new tab
Abstract
Binary Cycle of geothermal plant was developed to utilize energy of waste geothermal water (brine) from Dieng Geothermal Plant, Central Java, Indonesia to heat working fluid for electrical power generation. This paper describes energy balance on binary cycle which uses n-pentene (nC5H12) as working fluid and waste geothermal water (brine) as energy sources. The temperature of brine which will used is 174 degree Celcius, pressure of 700 kPa and mass flow rate of 6.75 kg/s, and then heated further in the evaporator by brine of brine 174 degree Celcius, pressure of 700 kPa and mass flow rate of 7.65 kg/s. From analysis of heat exchanger perfomances, total energy can be generated from this cycles is about 51 kW.
Copyright 2015, International Geothermal Association. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.