설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제15권6호
  • /
  • Pages.461-470
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  • 2003
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
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이산화탄소를 이용한 온수급탕용 초월임계사이클의 성능에 대한 실험적 연구

Experimental Studies on the Performance of a Transcritical Cycle for Hot Water Heating Using Carbon Dioxide

  • 김성구 (삼성전자(주) DA연구소) ;
  • 김민수 (서울대학교 기계항공공학부)
  • 발행 : 2003.06.01
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초록

The purpose of this study is to investigate the performance of a transcritical cycle for hot water heating using $CO_2$ as a working fluid. Some of the main parameters that affect the practical performance of the $CO_2$ system are discussed; the performance on the variation of refrigerant charge, changes in flow conditions of secondary fluids, and that with or without internal heat exchanger, The experimental results show that the optimum charge is approximately the same for various mass flow rates of the secondary fluid at gas cooler. The experimental results on the effect of secondary fluids are in general agreement with the experimental results of transcritical cycle in the open literature and show similar trend for conventional subcritical vapor compression cycles. The heat exchanger effectiveness increases with an increase of the heat exchange area of the internal heat exchanger regardless of the mass flow rate at the gas cooler.

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참고문헌

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