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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Thermodynamic Properties of Alternatives for R12, R22 and Performances of Refrigerator

R12 및 R22대체냉매의 열역학적 물성치 및 냉동기의 성능비교

  • 장세동 (서울대학교 대학원 기계공학과) ;
  • 신지영 (서울대학교 대학원 기계공학과) ;
  • 노승탁 (서울대학교 공과대학 기계공학과)
  • Published : 1993.02.01
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Abstract

Thermodynamic properties of alternatives for R12 and R22 were estimated and performances of refrigerating cycle using these refrigerants were compared. In this study, we adopt R134a, R22/R142b, R22/R152a, R22/R152a/R124 as alternatives for R12 and R32/R134a for R22. Thermodynamic properties of these refrigerants were estimated using modified CSD equation of state. Cycle simulations of the refrigerating system considering heat source were carried out in order to compare the performance of the system. R134a shows relatively lower COP than R12 but very similar VCR. R22/R142b(50/50 mass fraction), R22/R152a(10/90), R22/R152a/R124(30/25/45) are good for the substitutes of R12 and R32/R134a(30/70) is appropriate for that of R22 in view of COP and VCR.

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Acknowledgement

Supported by : 한국과학재단