Journal of Advanced Marine Engineering and Technology

  • 제31권5호
  • /
  • Pages.543-551
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  • 2007
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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2차 유체 조건 변화에 대한 CO2용 수냉식 열펌프의 성능 특성에 관한 연구

Performance Characteristics of Water-Chilling Heat Pump Using CO2 on the Variation of Secondary Fluid Conditions

  • 손창효 (부경대학교 기계공학부 대학원) ;
  • 오후규 (부경대학교 냉동공조공학)
  • 발행 : 2007.07.31
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초록

The performance characteristics of water-chilling heat pump using $CO_2$ with respect to variation of inlet temperature and mass flow rate of secondary fluid was investigated experimentally. An experimental apparatus is consisted of a compressor, a gas cooler, an expansion valve, an evaporator and a liquid receiver. All heat exchangers used in the test rig are counter-flow-type heat exchangers with concentric dual tubes, which ate made of copper. The gas cooler and the evaporator consist of 6 and 4 straight sections respectively arranged in parallel, each has 2.4 m length. The experimental results were summarized as the followings : As inlet temperature of secondary fluid in the gas cooler increases from $10^{\circ}C$ to $40^{\circ}C$, the compressor work, heating capacity and heating COP were varied to 37.8%, -13%, -35.9%, respectively. The heating capacity, compressor work, heating COP were turned into 23.3%, 6.42%, 13.1%, respectively when ass flow rate of secondary fluid in the evaporator increases from 70 g/s to 150 g/s. The above tendency is similar with performance variation with respect to temperature variation of secondary fluid in the conventional vapor compression cycle.

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참고문헌

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피인용 문헌

  1. 전자식 팽창밸브를 적용한 3RT급 히트펌프 시스템의 냉방 성능 특성 vol.21, pp.6, 2007, https://doi.org/10.9726/kspse.2017.21.6.079