Partager

Document IIF

Analyse expérimentale des performances d’un chauffe-eau à pompe à chaleur à détente directe assistée par l’énergie solaire fonctionnant au 134a en été.

Experimental performance analysis of a direct-expansion solar-assisted heat pump water heater with R134a in summer.

Auteurs : KONG X., SUN P., DONG S., et al.

Type d'article : Article, Article de la RIF, Étude de cas

Résumé

A direct-expansion solar-assisted heat pump (DX-SAHP) system for domestic hot water supply was built and tested, which mainly consisted of a bare flat-plate collector/evaporator with a surface area of 2.1 m2, a variable-frequency rotary-type hermetic compressor, a hot water tank with the volume of 0.2 m3 surrounded by a micro-channel condenser, and an electronic expansion valve. A series of experiments were carried out to test the system performance under typical summer weather conditions in Qingdao, China. The effects of various parameters, including solar radiation intensity of 258–634 W·m-2, ambient temperature of 28–34°C, compressor speed of 2500–6000?rpm and final water temperature of 50–60.3°C, on the system performance are analyzed. Experimental results show that the system coefficient of performance(COP) could be enhanced with the increase of the solar radiation intensity or the ambient temperature, and with the decrease of the compressor speed or the final water temperature.

Documents disponibles

Format PDF

Pages : 12-19

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 performance analysis of a direct-expansion solar-assisted heat pump water heater with R134a in summer.
  • Identifiant de la fiche : 30023984
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 91
  • Date d'édition : 07/2018
  • DOI : http://dx.doi.org/doi.org/10.1016/j.ijrefrig.2018.04.021

Liens


Voir d'autres articles du même numéro (25)
Voir la source

Indexation