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Modélisation des propriétés thermodynamiques des mélanges HFO-1234ze(E) + HFC-32 pour l'évaluation de la performance des cycles.

Thermodynamic-property modeling of HFO-1234ze(E)+HFC-32 mixtures for evaluating cycle performance.

Numéro : pap. ID: 458

Auteurs : TANAKA K., HIGASHI Y., AKASAKA R.

Résumé

Thermodynamic-property modeling of HFO-1234ze(E)+HFC-32 mixtures was carried out by optimizing the adjustable parameters of the Knuz and Wagner model on the basis of experimental data. Average absolute-deviations in calculated values using the mixture model from experimental data are 0.2% in density, 2.6% in specific heat at constant pressure, 0.7% in bubble-point pressure, 3.7% in the heat capacity of saturated liquid, and 0.2% in the density of saturated liquid. The performance of refrigeration cycles using HFO-1234ze(E)+HFC-32 mixtures as a working fluid was calculated changing mixture composition. This calculation has shown that maximum COP is obtained at the mass fraction of w = 0.89 of HFO-1234ze(E).

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Pages : 6 p.

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Détails

  • Titre original : Thermodynamic-property modeling of HFO-1234ze(E)+HFC-32 mixtures for evaluating cycle performance.
  • Identifiant de la fiche : 30003071
  • 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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