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Analyse du transfert de chaleur et de masse pour la conception d'adsorbeurs utilisant un couple actif fibre de charbon actif/éthanol.

Heat and mass transfer analysis for adsorber design using an activated carbon fiber/ethanol pair.

Auteurs : KOYAMA S., KARIYA K., KUWAHARA K., et al.

Résumé

Nowadays, adsorption cooling systems driven by low temperature waste heat or renewable energy sources have gained considerable attention as one of the solutions for both energy and environment related problems. However, the performance of these systems is still poor. Therefore, revealing details of adsorption phenomena are important for optimizing adsorber/desorber heat exchanger, which is the bottle-neck of the system. The performance of these systems depends on the thermophysical properties of the adsorbent/refrigerant pair and configuration of the adsorber/desorber heat exchanger. For the optimum design of the adsorber, it is essential to clarify the local heat and mass transfer phenomena during the adsorption process. A two dimensional numerical simulation program is developed to clarify the adsorption characteristics and to determine the performance of an adsorber/desorber heat exchanger. Activated carbon fiber (ACF) of type A-20, which has relatively higher surface area, and ethanol are used as adsorbent/refrigerant pair. The effects of heat exchanger fin pitch, fin thickness and apparent density of ACF bed on the performance of an adsorber/desorber heat exchanger are determined numerically. The simulation results show that the cooling capacity can be enhanced by optimizing design configurations and adsorbent bed apparent density.

Documents disponibles

Format PDF

Pages : ICR07-B1-1034

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 : Heat and mass transfer analysis for adsorber design using an activated carbon fiber/ethanol pair.
  • Identifiant de la fiche : 2008-0196
  • 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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