Heat Transfer Through Moist Porous Media
A transient technique has been used to measure the effective thermal conductivity of polyurethane foam containing various amounts of water. In this three-phase porous material, it was observed that the conductivity increases with water content, but not linearly. A model of heat and mass transfer based on (1) conduction, (2) infra-red radiation, and (3) the process of evaporation of water, diffusion of water vapour through the structure and condensation both in the structure and externally has been developed to predict the effective thermal conductivity in this material.
KeywordsMigration Total Heat Foam Rubber Sponge
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