THERMODYNAMIC ANALYSIS OF PRELIMINARY （初步的热力学分析）.pdf

GEOTHERMAL TRAINING PROGRAMME Reports 2006 Orkustofnun, Grensásvegur 9, Number 7 IS-108 Reykjavík, Iceland THERMODYNAMIC ANALYSIS OF PRELIMINARY DESIGN OF POWER PLANT UNIT I PATUHA, WEST JAVA, INDONESIA Roy Bandoro Swandaru PT PERTAMINA (PERSERO) Skyline building 15th floor Jl. M.H. Thamrin No. 9, Jakarta 10340 INDONESIA roy@geodipa.co.id ABSTRACT Patuha geothermal field in west Java, Indonesia has nine production wells and four non-commercial wells that are intended for power plant unit 1. The non- commercial wells can be used as injection wells. The production wells have enthalpies that range between 2400 and 2700 kJ/kg with non-condensable gas contents ranging between 1.10 and 1.77 %-weight of steam. The objective of this study was to determine the optimum output power to be generated using a single- flash system geothermal energy conversion model. The study is based on thermodynamic analyses and uses the Engineering Equation Solver software for its calculations. The results show that with the current supply from the existing nine wells, the turbine can produce 60,130 kW with a power output of 56,262 kW. This value is generated by a 6 bar separator pressure and a 0.08 bar-a condenser pressure.