An Experimental Investigation on the Thermal Conductivity of Consolidated Porous Materials

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Abstract
The thermal conductivity of porous materials consisting of the solid-fluid phase system, particularly the effect of porosity and of the saturating fluid occupying the pore space, has been investigated. Thirteen sand-stones and six fire bricks having different porosity were selected as typical examples of porous materials, and the experiment was carried out on these samples. A comparison method was used for measurement. Data were reported showing the variation of thermal conductivity relative to the porosity and conductivity of the saturating fluid. The variation according to the porosity of the samples is in complete agreement with the general formula previously derived by Sugawara and Yoshizawa.