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

  • 제22권10호
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  • Pages.657-664
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  • 2010
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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)
권호 표지

이산화탄소 사이클에서 열교환기의 형태 변화에 따른 성능특성 비교

Comparison of Performance Characteristics with Heat Exchanger Type in $CO_2$ Cycle

  • 배경진 (조선대학교 기계공학과 대학원) ;
  • 조홍현 (조선대학교 기계공학과)
  • Bae, Kyung-Jin (Graduate School of Mechanical Engineering, Chosun University) ;
  • Cho, Hong-Hyun (Department Mechanical Engineering, Chosun University)
  • 투고 : 2010.05.28
  • 발행 : 2010.10.10
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초록

The theoretical analysis of performance characteristics in a $CO_2$ cycle with the heat exchanger type was carried out. The size and performance of the fin-tube and microchannel heat exchanger were compared with operating conditions. As a result, the performance of the fin-tube gascooler and evaporator were more sensitive to the variation of operating condition compared to that of the microchannel gascooler and evaporator. Beside, the sizes of microchannel gascooler and evaporator could be decreased by 73% and 76%, respectively, compared to those of the fin-tube type gascooler and evaporator with the similar capacity. The COP and reliability of the $CO_2$ system can be increased by using a microchannel heat exchanger.

키워드

참고문헌

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