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Thermodynamic property predictions for refrigerant mixtures.

Author(s) : LEE M. J., SUN H. C.

Type of article: Article

Summary

The vapour-liquid equilibrium data of various refrigerant mixtures are correlated by the Soave, Patel-Teja, and Iwai-Margerum-Lu equations of state, respectively, with one adjustable binary interaction constant. The Patel-Teja equation is slightly better than others. A generalized equation is then developed that enables the Patel-Teja equation to predict the equilibrium-phase properties for such mixtures within reasonable accuracy. With the aid of this model, the bubble and dew pressures are predicted for 55 binary non-chlorofluorocarbon (non-CFC) refrigerant mixtures containing R22, R32, R123, R124, R125, R134a, R142b, R143a, R152a, R1243, and dimethyl ether at temperatures from 233.15 to 363.15 K over the entire composition range. The prediction shows that the mixtures of R124/R142b as well as R134a/dimethyl ether could work as near-azeotropic refrigerants.

Details

  • Original title: Thermodynamic property predictions for refrigerant mixtures.
  • Record ID : 1993-0106
  • Languages: English
  • Source: Ind. eng. Chem. Res. - vol. 31 - n. 4
  • Publication date: 1992/04
  • Document available for consultation in the library of the IIR headquarters only.

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