Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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The Performance Analysis of Multi Stage Reheater Organic Rankine Cycle According to Heat Sink Temperature Change

냉열원 온도 변화에 따른 다단재열랭킨사이클의 성능해석

  • Lee, Ho-Saeng (Korea Research Institute of Ships & Ocean Engineering) ;
  • Lim, Seung-Taek (Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Hyeon-Ju (Korea Research Institute of Ships & Ocean Engineering)
  • Received : 2015.12.29
  • Accepted : 2016.01.15
  • Published : 2016.02.28
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Abstract

In this study, the simulation for performance comparison between basic single stage organic rankine cycle, multi stage reheater cycle and multi stage reheater & recuperator cycle was carried out. The multi stage reheater cycle and multi stage reheater & recuperator cycle was designed to improve the efficiency for organic rankine cycle using heat source from industrial waste heat and heat sink from deep ocean water. R245fa was selected as a refrigerant for the cycle and system efficiencies were simulated by the variation of the heat sink temperature and the cycle classification. Performance characteristics were simulated by using the Aspen HYSYS. It was confirmed that the system efficiency was decreased by the increase of heat sink temperature. These results can be considered to be applied as geo-ocean thermal energy conversion in where plenty of geothermal or ocean thermal resource exist.

Keywords

Acknowledgement

Grant : 기관목적사업

Supported by : 한국해양과학기술원 부설 선박해양플랜트연구소

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