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Solubility of HFC32, HFC125 and HFC134a with three potential lubricants.

Author(s) : KANG H. M. L., ZOZ S. C., PATE M. B.

Summary

The paper presents solubility data for three HFC refrigerants, R32, R125 and R134a mixed with three different lubricants, namely polypropylene glycol diol, pentaerythritol ester mixed acid, and pentaerythritol ester branched acid. These refrigerants are important because when combined, either in groups of two or three, they form refrigerant mixtures which have been identified as potential replacement fluids for R22. The solubility tests were performed in test facility consisting of a series of miniature test cells submerged in a constant temperature bath. The bath temperature was precisely controlled over a temperature range of -30 to 60 deg C. The contents of each cell were monitored by pressure and temperature sensors. In addition, each cell was charged with a known refrigerant-lubricant concentration, so that, along with temperature and pressure data, the solubility (pressure, temperature, composition) could be determined. The test cells were constructed to allow for complete visibility of refrigerant-lubricant mixtures under all test conditions.

Details

  • Original title: Solubility of HFC32, HFC125 and HFC134a with three potential lubricants.
  • Record ID : 1995-0779
  • Languages: English
  • Source: Proceedings of the 1994 International Refrigeration Conference at Purdue.
  • Publication date: 1994/07/19
  • Document available for consultation in the library of the IIR headquarters only.

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