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Document IIF

Recherche sur le processus de transfert de chaleur pendant la congélation d'un milieu poreux saturé.

Research on the heat transfer process during freezing of saturated porous medium.

Auteurs : GUO Y., SHEN S., ZHU J.

Résumé

A planar mathematic heat transfer model with phase change in an anisotropic porous medium is formulated. A liquid region, a mushy region and a completely frozen region are considered in the porous medium during the freezing process. The changing trend of temperature, liquid saturation in anisotropic and isotropic porous media at different conditions is obtained. It can be concluded that the mushy region width is different at different freezing time. In the former 30 minutes, the mushy region becomes larger gradually, however, the change does not seem so distinct. In this later freezing period, the mushy region widens with time distinctly. It is shown that the temperature changes are different in anisotropic and isotropic media, and the temperature difference in the two media shows more obvious with freezing time going forward. Also, it can be found that the lower the freezing boundary temperature, the shorter the time before the ice forming, and the more evident of the temperature distribution difference in both the anisotropic porous and isotropic porous media.

Documents disponibles

Format PDF

Pages : ICR07-D1-400

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 : Research on the heat transfer process during freezing of saturated porous medium.
  • Identifiant de la fiche : 2008-0537
  • 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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