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Analyse de la performance d'un système de pompe à chaleur géothermique au R744 avec des refroidisseurs de gaz refroidis à l'air et à l'eau.

Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers.

Auteurs : HU H., EIKEVIK T. M., NEKSA P., et al.

Type d'article : Article, Article de la RIF

Résumé

In order to decrease the earth's energy imbalance degree, an R744 ground source heat pump system (GSHPS) with air-cooled and water-cooled gas coolers was designed, and the performances of this system were analyzed numerically. The results show that, for the proposed R744 system in different regions, the earth's energy imbalance degree can always be decreased to zero by optimizing the cooling load proportion of air-cooled gas cooler. Comparing with the system without air-cooled gas cooler, the investment cost of the proposed R744 system is decreased by 14.5–25.5% due to the decreasing cost of ground heat exchanger, and the coefficient of performance is increased. With the increase of ground heat exchanger depth, the performance deteriorates, and the ground heat exchanger with shorter depth is preferred in the GSHPS. The investment and operation costs of the proposed R744 system are lower than that of the existing R134a system.

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Format PDF

Pages : 72-86

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 : Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers.
  • Identifiant de la fiche : 30016728
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 63
  • Date d'édition : 03/2016

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