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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Investigation of Vapor-Liquid Equilibrium and Miscibility for R-410A/POE Oil Mixtures

R-410A/POE 오일 혼합물의 기-액상평형과 상용성에 관한 연구

  • 김창년 (서울대학교 터보·동력기계연구센터) ;
  • 송준석 (아주대학교 대학원) ;
  • 이은호 (아주대학교 대학원) ;
  • 박영무 (아주대학교 기계 및 산업공학부) ;
  • 유재석 (아주대학교 기계 및 산업공학부) ;
  • 김기현 (아주대학교 기계 및 산업공학부)
  • Published : 2000.06.01
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Abstract

The vapor-liquid equilibrium and miscibility measurement apparatus was developed and used to obtain data for refrigerant/oil mixture. The vapor-liquid equilibrium and miscibility data for R-410a/POE32 and R-410A/POE46 oil mixtures are obtained over the temperature range from -20 to $60^{\circ}C\;with\;10^{\circ}C$ intervals and the oil concentration range from 0 to 90 wt%. Using the experimental data, an empirical model is developed to predict the temperature-pressure-concentration relations for R-410A/POE oil mixtures at equilibrium. In the R-410A/POE32 oil mixture, the average root-mean-square deviation between measured data and calculated results from the empirical model is 2.00% and in the R-410a/POE46 oil mixture, that is 3.69%. Flory-Huggins theory is also used to predict refrigerant/oil mixture behavior. Miscibility for R-410A/POE32 oil mixture was observed all over the experimental conditions. Immiscibility for R-410A/POE46 oil mixture was observed at the low oil concentrations(10~30 wt%).

Keywords

References

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