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Evaluation de la performance d'une pompe à chaleur air-eau utilisant un compresseur à injection de vapeur et un réservoir intermédiaire couplé avec des tubes capillaires.

Performance evaluation of an air-source heat pump using economised vapour injection compressor and flash tank coupled with capillary tubes.

Auteurs : NGUYEN M., HEWITT N., HUANG M. J.

Résumé

Air-source heat pumps utilising an economised vapour injection (EVI) compressor have shown increased levels of performance over traditional heat pumps when operating at conditions comparable with the higher temperatures typically found in UK domestic heating systems. However, this performance is achieved at an increased capital cost with an additional heat exchanger and expansion valves required to fulfill the needs of the EVI cycle. The purpose of this work was to examine the performance of the EVI compressor in an air-source heat pump and compare that to the same compressor and heat pump system utilising a series of capillary tubes and flash tanks in place of the subcooling heat exchanger and thermostatic expansion valves traditionally found in an EVI heat pump. Results indicate that as expected the subcooling heat exchanger/thermostatic expansion valve has a superior performance across a wide operating range, but under certain conditions that are often found in the UK, the capillary tube/flash tank system also has acceptable performance.

Documents disponibles

Format PDF

Pages : ICR07-E2-1110

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 : Performance evaluation of an air-source heat pump using economised vapour injection compressor and flash tank coupled with capillary tubes.
  • Identifiant de la fiche : 2007-2806
  • 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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