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Document IIF

Évaluation par modélisation d’un chauffe-eau à pompe à chaleur solaire à détente directe fonctionnant au R410A.

Modeling evaluation of a direct-expansion solar-assisted heat pump water heater using R410A.

Auteurs : KONG X. Q., LI Y., LIN L., et al.

Type d'article : Article, Article de la RIF

Résumé

A direct-expansion solar-assisted heat pump (DX-SAHP) system by using R410A as refrigerant is described, which can supply domestic hot water during the whole year. Based on the distributed parameter and homogeneous flow models of collector/evaporator and condenser, the lumped parameter models of compressor and electronic expansion valve, and the refrigerant charge model, a numerical model is developed to estimate the thermal performance of the system. Given the structure parameters, meteorological parameters, initial and final water temperatures, for a fixed superheat degree, the effects of the refrigerant charge quantity on the performance parameters of the system are analyzed, such as compressor power, heat gain of collector, heating time, collector efficiency and system COP. Furthermore, for a fixed refrigerant charge quantity, the effects of various parameters, including solar radiation, ambient temperature, compressor speed and initial water temperature, have been simulated and analyzed on the thermal performance of the system.

Documents disponibles

Format PDF

Pages : 136-146

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 : Modeling evaluation of a direct-expansion solar-assisted heat pump water heater using R410A.
  • Identifiant de la fiche : 30022233
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 76
  • Date d'édition : 04/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.01.020

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