R-744/광유 및 POE 오일 혼합물의 증기압 및 상용성에 관한 연구

Study on the Vapor Pressure and Miseibility of R-744/Mineral and POE Oil Mixture

  • 최희성 (국민대학교 대학원) ;
  • 김석현 (국민대학교 기계 자동차공학부) ;
  • 박경근 (국민대학교 기계 자동차공학부)
  • 발행 : 2003.04.23

초록

Carbon dioxide($CO_2$, R-744) has become a very popular issue in application to refrigeration and air conditioning systems as a natural refrigerant. An experimental study has been carried out to investigate the vapor pressure and miscibility of refrigerant R-744 in the presence of lubricant oil. This is of particular interest in the selection of the lubricant oil for the compressor of a refrigeration system or an air conditioning system using the refrigerant R-744. This apparatus consists of the test section, measuring devices, the vacuum pump, the constant temperature bath and relevant connecting pipes made of stainless steel. Two lubricant oils, such as mineral oil(Naphthenic) and polyol ester(POE) oil, are considered in the present study. For this purpose, test runs were conducted with the oil concentration range from 5 to 50 wt%, and the temperature range from -10 to $10^{\circ}C$ with $2^{\circ}C$ intervals. The results are correlated with the vapor pressure. and showed with the miscibility as visualization for the individual text components.

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