Etude expérimentale et modélisation des transports diffusionnels de l'eau dans le domaine hygroscopique des bois de hêtre et d'épicéa

Abstract : In the hygroscopic range of wood and at low temperatures, internal transfers of water in gaseous phase and bound water are made by diffusion. The purpose of this research is to specify a methodology which allows the determination of diffusion coefficients, characteristic of the two transfers. Three experimental devices have been used : a Wicke and Kallenbach diffusion cell, a vaporimeter and a double hygrometric cell. The study of the same samples with the three devices makes up an original work in the diffusionnal transfer's field of an adsorbable solute in a porous medium. The knowledge of these results are not only interesting for the modelisation of diffusionnal transfers of water into wood and wood composites, but also the suggested methodology can be applied for every gaseous adsorbable solute on a microporous solid , as an adsorbent or a catalyst.
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Nadia Mouchot. Etude expérimentale et modélisation des transports diffusionnels de l'eau dans le domaine hygroscopique des bois de hêtre et d'épicéa. Autre. Université Henri Poincaré - Nancy 1, 2002. Français. ⟨NNT : 2002NAN10284⟩. ⟨tel-01754438⟩

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