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A vapor-liquid equilibria model for hydrofluorocarbons and their binary mixtures.

Author(s) : LI J., SATO H., YOKOZEKI A., et al.

Type of article: Article

Summary

A novel thermodynamic model has been proposed so as to calculate the thermodynamic properties during the vapor-liquid coexistence of HFC refrigerants and their binary mixtures. This model has been developed by modifying the Patel-Teja cubic equation of state, for HFC refrigerants, R32, R125, R134a, and their binary mixtures for temperatures from 220 K to their critical temperatures. The developed model enables calculation of various thermodynamic properties easily and accurately. The calculated results on the vapor-liquid equilibrium properties by the present model illustrate its superiority to the conventional cubic equations of state. A comparison of the proposed model with the so-called modified Benedict-Webb-Rubin model and the multi-term Helmholtz function model confirms equivalent effectiveness and accuracy by the present model.

Details

  • Original title: A vapor-liquid equilibria model for hydrofluorocarbons and their binary mixtures.
  • Record ID : 2000-0622
  • Languages: English
  • Subject: HFCs alternatives
  • Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 15 - n. 2
  • Publication date: 1998
  • Document available for consultation in the library of the IIR headquarters only.

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