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A Study on the Refrigerant Characteristics of the HFC-l52a, and Azeotrope Mixed with $CF_3$I in Air Conditioners  

이종인 (조선이공대학 자동차과)
하옥남 (조선대학교 기계공학과)
홍경한 (조선대학교 대학원)
권일욱 (조선대학교 대학원)
박찬수 (조선대학교 대학원)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.14, no.4, 2002 , pp. 332-340 More about this Journal
Abstract
In these days, environmental concerns have been increased throughout the industry and community worldwide. To prevent the ozone depletion, ozone depletion potential of a refrigerant must be zero. Simultaneously, a refrigerant with low GWP (global warming potential) is very demanding to induce green house effect. Chlorine-free HFC-l34a is a refrigerant widely used for automotive air-conditioning system because its destruction potential is ecologically zero. Although HFC-l34a has no ozone depletion potential, its global warming potential is so high that it is not considered as a perfect alternative refrigerant that is acceptable for long-term use. In this paper, experimental measurement has been carried out to analyze the performance characteristics of automotive air-conditioning system using HFC-152a, which has low GWP and zero ODP. Also mixed refrigerant that is composed of HFC-152a and $CF_3$ was applied to investigate an alternative possibility for the automotive airconditioning system. As a result of this study, we could draw following conclusions; With respect to the variation of the rotational speed of compressor, outside air temperature and flow rate, the heat amount of evaporator and compressor and performance coefficient was varied.
Keywords
Coefficient of performance; GWP; ODP; Auto-mobile air-conditioners;
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