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Document IIF

Simulation de la performance de refroidissement des pompes à chaleur géothermiques verticales munies d'un tube en U.

Simulation of the cooling performance of vertical U-tube geothermal heat pumps.

Auteurs : ZHANG G., ZHANG S.

Résumé

Temperature field of the soil around ground loop heat exchangers is critical to the design, performance and energy analysis of geothermal heat pump systems. For the simulation of transient heat transfer in vertical U-tube ground loop heat exchangers, a numerical model using finite volume formation and borehole thermal resistance was developed. The results show that the temperature of fluid inside U-tube pipe and soil around heat exchangers strongly depends on the dissipating heat rate per unit length of borehole. The effect of thermal conductivity of surrounding soil and the grout on the performance of vertical ground heat pump system was also analyzed. In order to take full advantage of geothermal heat pumps, the length of U-tube pipe should be determined reasonably for a prescribed condition.

Documents disponibles

Format PDF

Pages : ICR07-E2-663

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  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Simulation of the cooling performance of vertical U-tube geothermal heat pumps.
  • Identifiant de la fiche : 2008-0375
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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