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Thermodynamic properties for the alternative refrigerants.

Author(s) : MCLINDEN M. O., LEMMON E. W., JACOBSEN R. T.

Summary

Models commonly used to calculate the thermodynamic properties of refrigerants are summarized. For pure refrigerants, the virial, cubic, Martin-Hou, Benedict-Webb-Rubin, and Helmholtz energy equations of state and the extended corresponding states model are discussed. No single model was best in all aspects, but based on its combination of excellent accuracy and great generality, we recommend the mixture Helmholtz energy model as the best available. Experimental data are essential both to fit the adjustable parameters in property models and to assess their accuracy. The authors present a survey of the data available for mixtures of the HFC refrigerants R32, R125, R143a, R134a, and R152a and for mixtures of the natural refrigerants propane, butane, isobutane and carbon dioxide.

Details

  • Original title: Thermodynamic properties for the alternative refrigerants.
  • Record ID : 1998-2177
  • Languages: English
  • Source: Refrigerants for the 21st century. ASHRAE-NIST refrigerants Conference.
  • Publication date: 1997/10/06
  • Document available for consultation in the library of the IIR headquarters only.

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