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Calcul des phases d'équilibre pour un mélange de frigorigènes.

Phase equilibrium calculation for a refrigerant mixture.

Auteurs : LIU H. X., SHU S. M., ZOU X. C., et al.

Résumé

A thermal physical property--phase equilibrium for R-142b/R-134a/R-23/R-14 mixture refrigerant is predicted in this paper. The main equilibrium properties of the mixture are calculation using the cubic equation of state, including P-V-T parameters, enthalpy and entropy. The calculation results are shown as the pressure-enthalpy diagram and table. The isotherm curves and the phase equilibrium curve formulated from the calculation results are presented in this pressure-enthalpy diagram. Those models provide important data for cycle analysis for the system using the kind of the mixture. In the technology of refrigeration, Joule-Thomson effects were used in the mixed-gases refrigeration cycle. This cycle had already used in the area of gas liquefaction in the last century. However the efficiency of pure gas Joule Thompson refrigeration cycles is very low in the temperature of 120-150 K. In this temperature areas which need higher pressure and will arranged in the opening system. The applications are limited.

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Format PDF

Pages : ICR07-B1-831

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Détails

  • Titre original : Phase equilibrium calculation for a refrigerant mixture.
  • Identifiant de la fiche : 2008-0063
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/07/2007

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