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Positive buildings in energy are, nowadays, a recurrent objective of manyresearches in the construction and energetic efficiency domain. Furthermore, toachieve this objective, some studies about active and reactive walls have beencarried out employing porous medium as a main structure. Nevertheless, transfercharacterization in a foam type sample is not fully understood. The goal ofthis study is to improve the characterization of heat transfer in isotropic andanisotropic configurations of a porous medium. Thus, a finite volume method wasimplemented to study a heat transfer through these media, in the interest ofachieving their ratio equivalent to fluid thermal conductivity (i.e. Nusseltnumber). Finally, the results indicate a notable influence of the ratio of thecontact and the total inlet area on the isotropic configuration as well asstrong influence given by the different axis on the anisotropic model.Moreover, the analysis shows that in an active wall constituted by two solidphases, these effects will be preponderant for their characterization.

Isotropic and anisotropic heat transfer in active wall porous media foam type