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Caractéristiques de composition lors de la circulation du mélange zéotropique R1234ze(E)/R32 dans un cycle à pompe à chaleur.

The circulation composition characteristic of the zeotropic mixture R1234ze(E)/R32 in a heat pump cycle.

Numéro : pap. 2229

Auteurs : FUKUDA S., TAKATA N., KOYAMA S.

Résumé

This study presents an experimental investigation of the circulation composition in a heat pump cycle for considering the effect of its difference from the charged composition on the cycle performance prediction. The experiment was conducted with a vapor compression heat pump cycle using a compressor developed for R410A. The tested refrigerants are R1234ze(E)/R32 (20/80 mass%),R1234ze(E)/R32 (50/50 mass%), and R1234ze(E)/R32 (80/20 mass%). Compared with the charged composition, the measured mass fraction of the more volatile component R1234ze(E)increases at inlet of the expansion valve. When the difference between vapor and liquid composition is large in the two-phase flow, the difference between circulation and changed composition is large enough to affect the COP evaluation. The circulation composition depends on the velocity ratio of vapor and liquid, the operating pressure of heat pump cycle, and the degree of subcool at condenser outlet.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : The circulation composition characteristic of the zeotropic mixture R1234ze(E)/R32 in a heat pump cycle.
  • Identifiant de la fiche : 30006652
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 16/07/2012

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