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The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Performance Analysis of a Vapor Compression Cycle Driven by Organic Rankine Cycle

유기 랭킨 사이클로 구동되는 증기압축 냉동사이클의 성능 해석

  • Kim, Kyoung Hoon (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Jin, Jaeyoung (Graduate School, Kumoh National Institute of Technology) ;
  • Ko, Hyungjong (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김경훈 (금오공과대학교 기계공학과) ;
  • 진재영 (금오공과대학교 대학원) ;
  • 고형종 (금오공과대학교 기계공학과)
  • Received : 2012.07.31
  • Accepted : 2012.10.26
  • Published : 2012.10.31
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Abstract

Since the energy demand for refrigeration and air-conditioning has greatly increased all over the world, thermally activated refrigeration cycle has attracted much attention. This study carries out a performance analysis of a vapor compression cycle (VCC) driven by organic Rankine cycle (ORC) utilizing low-temperature heat source in the form of sensible heat. The ORC is assumed to produce minimum net work which is required to drive the VCC without generating an excess electricity. Effects of important system parameters such as turbine inlet pressure, condensing temperature, and evaporating temperature on the system variables such as mass flow ratio, net work production, and coefficient of performance (COP) are thoroughly investigated. The effect of choice of working fluid on COP is also considered. Results show that net work production and COP increase with increasing turbine inlet pressure or decreasing condensing temperature. Out of the five kinds of organic fluids considered $C_4H_{10}$ gives a relatively high COP in the range of low turbine inlet pressure.

Keywords

References

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