설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)
- 제5권2호
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- Pages.141-155
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- 1993
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
대체냉매 R-32(Difluoromethane)의 열역학적 물성과 R-22 대체냉매로서 열역학적 성능의 초기 평가
Thermodynamic Properties of R-32(Difluoromethane) and Initial Evaluation of Thermodynamic Perfomance as A R-22 Alternative Refrigerant
초록
Thermodynamic properties of R-32 are calculated and its refrigeration performance is evaluated for the purpose the feasibility study of replacing R-22 with R-32. (1) Refrigeration effect of R-32 is superior to that of R-22 because heat of evaporation of R 32 is about 50% higher than that of R-22. However, COP of R-32 system is 10-30% lower than that of R-22 system. It is mainly attributed to the vapor pressore of R-32 being about 62% higher than R-22. (2) Since the pressure ratio and the specific heat ratio of R-32 system is higher than those of R -22, compressor discharging temperature rises as high as to
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