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A comparison of the effects of polyolester and mineral oil lubricants on the in-tube evaporation of R22, R407C and R410A.

Author(s) : SUNDARESAN S. G., PATE M. B., RAY D. T.

Summary

Chlorine-free HFC refrigerants, such as R407C and R410A, are being considered as viable alternatives for R22 refrigerant. Heat transfer coefficients are important considerations to meet the performance needs of the heat exchanger. Heat transfer is affected by the type and amount of lubricant circulating. The paper discusses the results of in-tube evaporation tests of R22 with mineral oil and polyolester lubricants and compares them with R407C-mineral oil, R407C-polyolester, R410A-mineral oil and R410A-polyolester. The results show that with HFC refrigerants, namely R407C and R410A, the polyolester lubricants exhibit superior heat transfer characteristics in relation to mineral oils.

Details

  • Original title: A comparison of the effects of polyolester and mineral oil lubricants on the in-tube evaporation of R22, R407C and R410A.
  • Record ID : 1997-0074
  • Languages: English
  • Source: Proceedings of the 1996 Purdue International Refrigeration Conference.
  • Publication date: 1996/07/23
  • Document available for consultation in the library of the IIR headquarters only.

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