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Simulation du transfert de chaleur et d'humidité des condensats à changement de phase et mobiles dans une isolation fibreuse.

Simulation of heat and moisture transfer with phase change and mobile condensates in fibrous insulation.

Auteurs : CHENG X., FAN J.

Type d'article : Article

Résumé

Numerical simulation has been reported on for an improved model of coupled heat and moisture transfer with phase change and mobile condensates in fibrous insulation. The new model considers the moisture movement induced by the partial water vapour pressure, a super saturation state in condensing region as well as the dynamic moisture absorption of fibrous materials and the movement of liquid condensates. Based on simulation results, it has been found that moisture movement induced by the partial water vapour pressure, moisture diffusion, condensation, evaporation, and liquid water movement are the most important factors influencing the distribution of water content and heat loss. The results of the new model have been compared and found in good agreement with the experimental ones.

Détails

  • Titre original : Simulation of heat and moisture transfer with phase change and mobile condensates in fibrous insulation.
  • Identifiant de la fiche : 2004-2759
  • Langues : Anglais
  • Source : International Journal of thermal Sciences - vol. 43 - n. 7
  • Date d'édition : 07/2004

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