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Mesures de l'équilibre de phase vapeur-liquide pour un système au couple R717 + R152a à des températures allant de 253,150 K à 293,150 K.

The measurements of vapor liquid phase equilibrium for R717?+?R152a system at temperatures ranging from 253.150?K to 293.150?K.

Auteurs : ZHAO Y., DONG X., ZHONG Q., et al.

Type d'article : Article, Article de la RIF

Résumé

In contrast to pure ammonia, some additives into it may provide better solubility of the mineral oils, higher refrigeration capacity and lower discharge temperature of the compressor. In this paper, the vapor liquid phase equilibrium for the ammonia?+?1,1-difluoroethane system at temperatures ranging from 253.150?K to 293.150?K were studied. The Peng–Robinson equation of state with the Huron–Vidal mixing rule involving the non-random two-liquid activity coefficient model was employed to describe the VLE behavior of the system concerned. The maximum average absolute relative deviation of pressure and average absolute deviation of vapor phase are 0.31% and 0.009, respectively. A positive azeotropic behavior was exhibited at the experimental temperature range.

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Format PDF

Pages : 293-299

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Détails

  • Titre original : The measurements of vapor liquid phase equilibrium for R717?+?R152a system at temperatures ranging from 253.150?K to 293.150?K.
  • Identifiant de la fiche : 30021946
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 75
  • Date d'édition : 03/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2016.12.008

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