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Document IIF

Pompe à chaleur à eau chaude utilisant le propane à faible charge comme frigorigène.

Hot water heat pump with low-charge propane refrigerant.

Numéro : 0113

Auteurs : WINTHEREIK F. P., PEDERSEN P. H., LAURIDSEN T.

Résumé

In 2018, a hot water heat pump for family houses using R290 (propane) was developed and marketed. The unit had a 270 liter storage tank, 350 g of R290, an 8.8 cm3 reciprocating compressor, and a heating capacity of 1.5 kW. The appliance is supposed to be placed indoors, and a risk assessment requires a room of 7 m2 with a height of minimum 2 m. These requirements showed to be an obstacle for the sale of the unit.
A new project was started with the purpose of reducing the refrigerant charge of the unit to a maximum of 150 g of R290. This will eliminate the need for additional safety measures and the obstacles for selling the product.
In cooperation with a manufacturer of aluminium pipes, a new condenser profile has been developed and tested. The new profile reduces the inner volume of the condenser without compromising the heat transfer and the pressure drop in the condenser. In addition to that the energy efficiency of the new unit has increased. The condenser is wrapped around the storage tank, and the system is expected to be competitive on the market. Furthermore, it is expected that the new unit will be marketed in the near future.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Hot water heat pump with low-charge propane refrigerant.
  • Identifiant de la fiche : 30029717
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
  • Date d'édition : 13/06/2022
  • DOI : http://dx.doi.org/10.18462/iir.gl2022.0113
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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