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A predictive extended corresponding states model for pure and mixed refrigerants including an equation of state for R134a.

Author(s) : HUBER M. L., ELY J. F.

Type of article: Article, IJR article

Summary

The authors developed a predictive corresponding states model for the thermophysical properties of pure refrigerants and refrigerant mixtures. The thermodynamic properties are predicted using the principle of extended corresponding states, incorporating a recent 32-term modified Benedict-Webb-Rubin correlation for the R134a (1,1,1,2-tetrafluoroethane) reference fluid. This theoretically based model uses shape factors to ensure conformality among the various components. The authors present the coefficients for density-independent shape-factor correlations for 21 refrigerants, and a set of universal coefficients that can be used with any refrigerant given only the critical parameters and the acentric factor. They show comparisons with experimental density data for each of the 21 refrigerants.

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Pages: 18-31

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Details

  • Original title: A predictive extended corresponding states model for pure and mixed refrigerants including an equation of state for R134a.
  • Record ID : 1994-0811
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 17 - n. 1
  • Publication date: 1994/01

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