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Amélioration de la performance d'un système de froid évaporatif à déshydratant utilisant un refroidisseur évaporatif direct/indirect.

Performance enhancement of a desiccant evaporative cooling system using direct/indirect evaporative cooler.

Auteurs : ELGENDY E., MOSTAFA A., FATOUH M.

Type d'article : Article, Article de la RIF

Résumé

In this paper, three novel desiccant evaporative cooling system configurations are proposed, simulated and compared with the conventional system under a wide range of ambient air temperature (30: 40 °C) and humidity ratio (0.01: 0.02 kgv kga-1). In configuration-I, a direct/indirect evaporative cooling is inserted before the rotating heat exchanger. However, it is inserted after the rotating heat exchanger for system configuration-II. In configuration-III, an extra direct/indirect evaporative cooling is added in an opposite manner. Validation results confirm that, simulation and experimental results are in a good agreement with average errors of 2.23 and 3.87% for ambient air temperature and humidity ratio, respectively. Energetic analysis revealed that configuration-I has the highest cooling capacity while configuration-III has the highest thermal COP and air handling COP. Exergetic efficiency of config-III is higher than the conventional system with 54% as average value over the range of ambient air humidity.

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Format PDF

Pages : 77-87

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    20 €

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    Gratuit

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Détails

  • Titre original : Performance enhancement of a desiccant evaporative cooling system using direct/indirect evaporative cooler.
  • Identifiant de la fiche : 30013502
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 51
  • Date d'édition : 03/2015

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