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Capacité thermique isobare expérimentale d’un mélange liquide de HFC-32+HFO-1234ze(E) et extension d’une équation d’état prédictive correspondante aux mélanges HFC.

Experimental isobaric heat capacity of liquid HFC-32+HFO-1234ze(E) mixture and extension of a predictive corresponding state equation to HFC mixtures.

Auteurs : GAO N., CHEN G., WANG Y., et al.

Type d'article : Article, Article de la RIF

Résumé

In this work, isobaric heat capacity of liquid refrigerants mixtures was investigated experimentally and theoretically. First of all, experimental isobaric heat capacity data of a representative HFC-32+HFO-1234ze(E) binary mixture was obtained by a modified Calvet calorimeter at different temperatures and concentrations. After that, a previously proposed corresponding state equation, which was used for estimation of isobaric heat capacity of pure liquid HFCs and HFOs refrigerants, was extended to mixtures. Different mixing rules for pseudo-critical parameters were tested and a comparison between predicted values and experimental data was carried out in search of a best mixing rule. In the end, the corresponding state equation coupled with the selected mixing rule was applied to other binary mixtures R-410A, R-507A and ternary mixtures R-404A, R-407C. It was found that the calculated results agreed well with their fundamental Helmholtz equations of state. The average absolute deviation was 0.88% and maximum absolute deviations were no more than 1.90%.

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Pages : 318-323

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Détails

  • Titre original : Experimental isobaric heat capacity of liquid HFC-32+HFO-1234ze(E) mixture and extension of a predictive corresponding state equation to HFC mixtures.
  • Identifiant de la fiche : 30023543
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
  • Date d'édition : 04/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.02.015

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