Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Heat Transfer and Pressure Drop Characteristics of Secondary Refrigerants Applying to Indirect Refrigeration System

간접 냉동 시스템용 2차 냉매의 열전달과 압력강하 특성

  • Oh, Hoo-Kyu (Department of Refrigeration and Air-Conditioning Engineering, Pukyoung National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air-Conditioning Engineering, Pukyoung National University) ;
  • Jo, Hwan (Department of Refrigeration and Air-Conditioning Engineering, Pukyoung National University) ;
  • Yi, Wen-Bin (Department of Refrigeration and Air-Conditioning Engineering, Pukyoung National University) ;
  • Jeon, Min-Ju (Department of Refrigeration and Air-Conditioning Engineering, Pukyoung National University)
  • 오후규 (부경대학교 냉동공조공학과) ;
  • 손창효 (부경대학교 냉동공조공학과) ;
  • 조환 (부경대학교 냉동공조공학과) ;
  • 이문빈 (부경대학교 냉동공조공학과) ;
  • 전민주 (부경대학교 냉동공조공학과)
  • Received : 2013.03.14
  • Accepted : 2013.03.29
  • Published : 2013.08.31
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Abstract

This paper presents the comparison of heat transfer and pressure drop of various secondary refrigerants (single-phase and two-phase) in the indirect refrigeration system. The main results were summarized as follows: In case of heat transfer, it is useful to use secondary refrigerants in low evaporating temperature region and the heat transfer coefficient of single-phase is larger than two-phase secondary refrigerants. In case of pressure drop, it is useful to use secondary refrigerants in high evaporating temperature region and the pressure drop of two-phase is smaller than single-phase secondary refrigerant. Also, $CO_2$ is the best useful because pressure drop of $CO_2$ among the secondary refrigerants is the smallest.

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References

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