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

  • 제17권10호
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  • Pages.883-890
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  • 2005
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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

저온용 R502 대체냉매의 성능 평가

Performance of R502 Alternative Refrigerants for Low Temperature Applications

  • 하종철 (인하대학교 대학원 기계공학과) ;
  • 황지환 (인하대학교 대학원 기계공학과) ;
  • 백인철 (인하대학교 대학원 기계공학과) ;
  • 정동수 (인하대학교 기계공학과)
  • 발행 : 2005.10.01
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초록

In this study, 2 pure hydrocarbon refrigerants of R1270 (Propylene) and R290 (Propane) and 3 binary mixtures composed of R1270, R29O and R152a were tested in a refrigerating bench tester with a scroll compressor in an attempt to substitute R502 used in most of the low temperature applications. The test bench provided 3\sim3.5$ kW capacity and water and water/glycol mixture were employed as the secondary heat transfer fluids. All tests were conducted under the same external conditions resulting in the average saturation temperatures of -28 and $45^{\circ}C$ in the evaporator and condenser, respectively. Test results showed that all refrigerants tested had $9.6\sim18.7\%$ higher capacity and $17.1\sim27.3\%$ higher COP than R502. The compressor discharge temperature of R1270 was similar to that of R502 while those of all other refrigerants were $23.7\sim27.9\%$ lower than that of R502. For all alternative refrigerants, the amount of charge was reduced up to $60\%$ as compared to R502. Overall, these alternative refrigerants offer better system performance and reliability than R502 and can be used as long term substitutes for R502 due to their excellent environmental properties.

키워드

참고문헌

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