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Document IIF

Chauffe-eau à pompe à chaleur à production d'eau chaude instantanée fonctionnant au CO2 pour usage domestique.

Instant hot-water supply heat-pump water heater using CO2 refrigerant for home use.

Auteurs : ENDOH K., KOUNO T., GOMMORI M., et al.

Résumé

The authors developed a heat-pump water heater for home use that produces instant hot water using a CO2 refrigerant. The water heater has a high COP, and it saves space. They developed a heating system that supplies hot water at exactly the necessary temperature without additional cooling water being added, thereby creating a high-efficiency heat-pump cycle. A compressor and a heat exchanger to meet the requirements of a CO2 refrigerant have also been developed. Consequently, the rated COP of the developed heat-pump water heater was 4.6 at a heating capacity of 23 kW. By increasing the heating capacity, the authors were able to decrease the volume of the storage tank and combine the storage tank with a heat pump. As a result, the necessary setting area and the volume of the developed heat-pump water heater were half those of a hot-water storage heat-pump water heater, which consists of a heat pump and a large hot-water storage tank.

Documents disponibles

Format PDF

Pages : 2006-2

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 : Instant hot-water supply heat-pump water heater using CO2 refrigerant for home use.
  • Identifiant de la fiche : 2007-1736
  • Langues : Anglais
  • Source : 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Date d'édition : 29/05/2006

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