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Performances d'une machine tritherme à éjecteur utilisant des mélanges de fluides frigorigènes.

Performance analysis of a jet cooling system using refrigerant mixtures.

Auteurs : BOUMARAF L., LALLEMAND A.

Type d'article : Article, Article de la RIF

Résumé

A steady-state simulation program, for given temperatures of the sources, integrating simple models of each component has been developed. A Peng-Robinson equation of state assuming equality of the fugacities of the two phases was used to model the thermodynamic properties of the vapour and liquid-vapour equilibrium. The refrigerants investigated in this study are: the pure refrigerants R142b, R152a, RC318, R124, R134a, R22 and the binary refrigerants R22/RC318/, R22/R142b, R22/R124, R22/R152a, R22/R134a, R134a/R142b, R152a/R142b and R134a/R152a. Results show that the use of a binary mixture does not always increase the performance of system. Generally, when the mixture is mildly zeotropic (e.g. R22/RC318), the cooling efficiency of the system decreases. However, when the mixture is midly zeotropic (e.g. R134a/R142b) or almost azeotropic (e.g. R134a/R152a), efficiency and energetic efficiency increase.

Documents disponibles

Format PDF

Pages : 580-589

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Performance analysis of a jet cooling system using refrigerant mixtures.
  • Identifiant de la fiche : 2000-0076
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 22 - n. 7
  • Date d'édition : 11/1999

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