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Document IIF

Etude expérimentale sur un système de chauffe-eau à pompe à chaleur air-eau à compression biétagé.

Experimental study on a two-stage compression air-source heat pump water heater system.

Auteurs : WU W. B., JIN S. M.

Résumé

The air-source heat pump (ASHP) water heater is a device for hot water in which heat is absorbed from air by heat pump through consuming a little electricity. While there are some disadvantages of ordinary single-stage heat pump in low-temperature environment, such as high compression ratio, scarce heating ability and low efficiency. Two-stage compression refrigeration cycle was put forward to be used in the air-source heat pump to solve the low temperature adaptability of ASHP in this paper. Combining the single-stage heat pump, a two-stage compression air-source heat pump water heater was designed, and the experimental instrument of prototype has been built up for experimental study. Some conclusions are obtained through actual tests. Compared with single-stage compression cycle, the two-stage cycle's compression ratio is much less, and the heating ability is generally higher. The COP of the two-stage system surpasses the single-stage cycle when the ambient temperature falls to 5°C, and it could keep to about 1.5°C when the ambient temperature is -20°C.

Documents disponibles

Format PDF

Pages : ICR07-E2-450

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Experimental study on a two-stage compression air-source heat pump water heater system.
  • Identifiant de la fiche : 2008-0371
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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