Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
권호 표지

Analysis of HFC-245fa organic Rankine cycle for geothermal power generation

지열 발전을 위한 HFC-245fa 유기 랭킨 사이클의 성능해석

  • Baik, Young-Jin (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER)) ;
  • Kim, Min-Sung (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER)) ;
  • Chang, Ki-Chang (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER)) ;
  • Yoon, Hyung-Kee (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER)) ;
  • Lee, Young-Soo (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER)) ;
  • Ra, Ho-Sang (Solar Thermal and Geothermal Research Center, Korea Institute of Energy Research(KIER))
  • 백영진 (한국에너지기술연구원 태양열지열연구센터) ;
  • 김민성 (한국에너지기술연구원 태양열지열연구센터) ;
  • 장기창 (한국에너지기술연구원 태양열지열연구센터) ;
  • 윤형기 (한국에너지기술연구원 태양열지열연구센터) ;
  • 이영수 (한국에너지기술연구원 태양열지열연구센터) ;
  • 나호상 (한국에너지기술연구원 태양열지열연구센터)
  • Published : 2009.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, an ORC (Organic Rankine Cycle) is investigated for a low-temperature geothermal power generation by a simulation method. A steady-state simulation model is developed to analyze cycle's performance. The model contains a turbine, a pump, an expansion valve and heat exchangers. The turbine and pump are modelled by an isentropic efficiency. Simulations were carried out for the given heat source and sink inlet temperatures, and given flow rate that is based on the typical power plant thermal-capacitance-rate ratio. HFC-245fa is considered as a working fluid of the cycle. Simulation results, at the given secondary working fluids conditions, show that even though the power can be presented by both the evaporating temperature and the turbine inlet superheat, it depends on the evaporating temperature primarily.

Keywords