Document IIF

Mesures des densités de saturation dans la région critique et lieu géométrique critique du mélange R32/R143a.

Measurements of saturation densities in the critical region and critical locus for the binary R32/R143a system.

Résumé

One of the most promising alternatives to substitute R502 is the ternary R32/R125/R143a refrigerant system. In order to elucidate the thermodynamic properties of this ternary system, it becomes very important to reveal the thermodynamic properties of the binary R32/R143a system, since those for two other binary systems, R32/R125 and R125/R143a, have already been studied to a certain extent by earlier measurements including those by the authors' contributions. The saturated vapour and liquid densities in the critical region of this mixture have been measured based on a visual observation of the meniscus disappearance in an optical cell. For the R32/R143a system, 42 saturation densities have been measured at four compositions, 20, 50, 60 and 90 mass% R32. The critical temperatures and densities for this binary refrigerant have been determined by taking into consideration the meniscus disappearing level as well as the intensity of the critical opalescence.

Documents disponibles

Format PDF

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 : Measurements of saturation densities in the critical region and critical locus for the binary R32/R143a system.
  • Identifiant de la fiche : 2001-1223
  • Langues : Anglais
  • Source : 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Date d'édition : 19/09/1999

Liens


Voir d'autres communications du même compte rendu (447)
Voir le compte rendu de la conférence