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Impact d’un échangeur de chaleur géothermique vertical sur la fraction solaire d’un système de refroidissement solaire.

Impact of a vertical geothermal heat exchanger on the solar fraction of a solar cooling system.

Auteurs : ACUÑA A., LARA F., ROSALES P., et al.

Type d'article : Article, Article de la RIF

Résumé

This paper presents the influence on the solar fraction of coupling a Solar Cooling System (SCS) with a Geothermal Heat Exchanger (GHX). The SCS analysis was made using a mathematical model and was supported by experimental data of a vertical GHX. First, the cooling capacity of the SCS was calculated, considering the cooling load required for a building of 420 m3.The results show that a 12.30 kW cooling capacity SCS would be necessary to satisfy the maximum cooling load requirement during the summer. A 1 kW PV array was considered to assist the SCS.With the constructed GHX a soil temperature model was validated to estimate the temperature of the output water at different GHX depths. The solar fraction meets between 10 and 23% of the energy demand when the condenser is air cooled. However, when a GHX of 1, 2, 4 and 10 m is implemented the solar fraction increases.

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Pages : 63-73

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Détails

  • Titre original : Impact of a vertical geothermal heat exchanger on the solar fraction of a solar cooling system.
  • Identifiant de la fiche : 30022230
  • 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.2017.02.007

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