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Mesures expérimentales et corrélation de l'équilibre vapeur-liquide et des données critiques pour les mélanges binaires CO2 + R1234yf et CO2 + R1234ze(E).

Experimental measurements and correlation of vapor-liquid equilibrium and critical data for the CO2 + R1234yf and CO2 + R1234ze(E) binary mixtures.

Auteurs : JUNTARACHAT N., VALTZ A., COQUELET C., et al.

Type d'article : Article, Article de la RIF

Résumé

Isothermal (P-x-y) vapor–liquid equilibrium data for the CO2 + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) binary system are reported at seven temperatures ranging from 283.15 K to 353.15 K. The experimental values were measured using a static–analytic type apparatus coupled with two electromagnetic capillary samplers (Rolsi™, Armines' patent) for repeatable and reliable equilibrium phase sampling and handling. Moreover, for the four temperatures above the critical temperature of pure CO2 (304.3 K), the mixture critical compositions (xc) and pressures (Pc) were calculated at each temperature using extended scaling laws. In a second step, the critical loci of the CO2 + R1234yf and CO2 + trans-1,3,3,3-tetrafluoroprop-1-ene [R1234ze(E)] were measured over the whole composition range using a synthetic-dynamic type apparatus. The subcritical and critical experimental data determined in this study were compared to those available in the open literature and were correlated using the Peng–Robinson equation of state with temperature-dependent binary interaction parameters.

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Format PDF

Pages : 141-152

Disponible

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    20 €

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Détails

  • Titre original : Experimental measurements and correlation of vapor-liquid equilibrium and critical data for the CO2 + R1234yf and CO2 + R1234ze(E) binary mixtures.
  • Identifiant de la fiche : 30012529
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 47
  • Date d'édition : 11/2014

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