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A new correlation for viscosity of oil/refrigerant mixtures.

Author(s) : THÉBAULT C., VAMLING L.

Summary

Viscosity measurements from a capillary viscometer are reported for five HFC working fluids, HFC-134a, HFC-125, HFC-32, R410A and R407C, in a high-grade polyolester oil, between 300 and 350 K and at mass-concentrations between 0 and 30%. A simple correlation has been developed from the experimental measurements with the pure HFCs and tested on the experimental results for R410A and R407C of the paper. In the low refrigerant-concentration region, the experimental points were estimated with errors typically between 10 and 25%. For that correlation, the constants determined are independent of the working fluid used. For HFCs and HFC blends, the only required data are two viscosity points for the pure oil and the molecular weight of the refrigerant.

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Details

  • Original title: A new correlation for viscosity of oil/refrigerant mixtures.
  • Record ID : 2000-1179
  • Languages: English
  • Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Publication date: 1999/09/19

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