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Mesures des masses volumiques à saturation et des paramètres critiques des mélanges binaires de HFO-1234yf + HFC-32.

Measurements of saturated densities and critical parameters for the binary HFO-1234yf + HFC-32 mixtures.

Numéro : pap. ID: 479

Auteurs : AKATSU M., TANAKA K., HIGASHI Y.

Résumé

The vapor-liquid coexistence curves near the critical point of the binary HFO-1234yf + HFC-32 mixtures were measured by the visual observation of meniscus disappearance. Eleven, eighteen, and eleven saturated density data for the 50 mass%, 80 mass%, and 90 mass% HFO-1234yf mixtures, respectively, were obtained. The critical temperatures and critical densities for three compositions were determined taking into consideration of the meniscus disappearing level as well as the intensity of the critical opalescence. The critical pressure of those mixtures was determined from the analysis of P?Tx measurements. In addition, the composition dependence of the critical parameters for the HFO-1234yf + HFC-32 mixtures is discussed.

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Pages : 8 p.

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Détails

  • Titre original : Measurements of saturated densities and critical parameters for the binary HFO-1234yf + HFC-32 mixtures.
  • Identifiant de la fiche : 30003201
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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