Characterization of diffusionnal transfers of bound water and water vapor in beech and spruce
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Universidad del Bío Bío
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In the hygroscopic range of wood and without any thermal gradient, transfer of water vapor andbound water is carried out by diffusion. In this study, we experimentally determined the diffusivityvalues for vapor and bound water in the three orthotropic directions of wood for two species (beech andspruce). We then evaluated in steady-state the fluxes for the two forms of water and showed the influenceof wood morphologies and transfer direction on these fluxes.Keywords: Diffusivity, Water vapor, Bound water, Beech, SpruceIn the hygroscopic range of wood and without any thermal gradient, transfer of water vapor andbound water is carried out by diffusion. In this study, we experimentally determined the diffusivityvalues for vapor and bound water in the three orthotropic directions of wood for two species (beech andspruce). We then evaluated in steady-state the fluxes for the two forms of water and showed the influenceof wood morphologies and transfer direction on these fluxes.
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