Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Performance Comparison of Supercritical Heat Pump for a Variety of Refrigerants

다양한 냉매를 적용한 초임계 히트펌프의 성능 비교

  • Yoon, Jung-In (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Choi, Kwang-Hwan (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Jeon, Min-Ju (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University)
  • 윤정인 (부경대학교 냉동공조공학과) ;
  • 손창효 (부경대학교 냉동공조공학과) ;
  • 최광환 (부경대학교 냉동공조공학과) ;
  • 전민주 (부경대학교 냉동공조공학과)
  • Received : 2014.08.02
  • Accepted : 2014.09.15
  • Published : 2014.10.31
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Abstract

In this paper, the cycle performance analysis for the COP of supercritical heat pump using various refrigerants is presented to offer the basic design data for the operating parameters of the system. The working fluids are R134a, R22, R32, R290, R600, R600a, R1270 and R744. The operating parameters considered in this study include superheating degree of evaporator, temperature of gas cooler inlet and outlet, compressor efficiency and evaporating temperature in the supercritical heat pump system. The main results were summarized as follows : Superheating degree, temperature of gas cooler inlet and outlet, compressor efficiency and evaporating temperature of supercritical heat pump system have an effect on the COP of this system. With a thorough grasp of these effect, it is necessary to design the supercritical heat pump using R134a. And, in comparison of COP of supercritical heat pump using various refrigerants, R32 and R600 is the highest, and R744 is the lowest among other refrigerants. From these results, it is confirmed that the COP of supercritical heat pump using R744 is higher than that using freon refrigerants such as R32 and R134a.

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References

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