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Effet des paramètres de conception des ailettes sur la performance d’un refroidisseur à adsorption à deux lits.

Effect of fin design parameters on the performance of a two-bed adsorption chiller.

Auteurs : ABD-ELHADY M. S., HAMED A. M.

Type d'article : Article de la RIF

Résumé

Adsorption refrigeration systems are commercially matured due to the need of decreasing electrical power consumption and usage of non-environmental refrigerants, which are the main problems of the conventional refrigeration systems. This paper presents an investigation on the performance of small-scale two-bed adsorption chiller combined with heat and mass recovery cycles with the aid of a lumped analytical simulation technique. This model is applied to analyze the effect of fin design parameters on the heat transfer inside the bed and system performance. The working pair used in the simulations is RD silica gel–water. Defining a base-case for the fin design parameters, fin thickness, fin radius, and fin spacing are changed and the performances of four fin configurations are demonstrated. Decreasing the fin spacing enhances the heat transfer significantly. For optimum operation condition, specific cooling capacity is improved by an average value up to 147.6% by decreasing fin spacing from 4 mm to 2 mm, while increasing the fin radius decreases temperatures of the adsorbent. Specific cooling capacity is improved by an average value up to 44% by decreasing fin radius from 16 mm to 8 mm. The fin thickness has a minor effect on heat transfer in the bed.

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Format PDF

Pages : 164-173

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Effect of fin design parameters on the performance of a two-bed adsorption chiller.
  • Identifiant de la fiche : 30027424
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 113
  • Date d'édition : 05/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2020.01.006

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