Partager

Document IIF

Analyse exergétique d’une pompe à chaleur fonctionnant entre un puits de chaleur et une source de chaleur à taux de capacité thermique limité.

Exergy analysis on a heat pump working between a heat sink and a heat source of finite heat capacity rate.

Auteurs : PITARCH M., HERVÁS-BLASCO E., NAVARRO-PERIS E., et al.

Type d'article : Article, Article de la RIF

Résumé

The optimum performance of a pure subcritical refrigeration cycle depends significantly on the temperature lift of the heat source and sink. Therefore, the maximization of the system efficiency has to be linked to them. This paper shows an exergy analysis of each heat pump component (condenser, evaporator, expansion valve and compressor) considering that the heat source and sink are not at constant temperature. The performed study shows the components with more possibilities for improvement. Based on this analysis, the optimization of cycle parameters like subcooling and superheat as a function of the external conditions have been done. In addition, this work has demonstrated that the components having a higher influence in the system irreversibility's depends significantly on the temperature lift of the secondary fluids. Finally, the obtained results show potentials improvements of the efficiency up to 23% if the system is able to operate in the optimal subcooling and superheat.

Documents disponibles

Format PDF

Pages : 337-350

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 : Exergy analysis on a heat pump working between a heat sink and a heat source of finite heat capacity rate.
  • Identifiant de la fiche : 30025517
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 99
  • Date d'édition : 03/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.11.044

Liens


Voir d'autres articles du même numéro (45)
Voir la source

Indexation