Modeling vacuum-contact drying of wood : the water potential approach

Authors: Defo, MauriceCloutier, AlainFortin, Yves
Abstract: A two-dimensional mathematical model for vacuum-contact drying of wood is presented. The moisture and heat equations are based on the water potential concept whereas the pressure equation is formulated considering unsteady state conservation equation of dry air. Most of the model parameters were determined during independent experiments. The set of equations is then solved in a coupled form using the finite element method. The validation of the model is performed using experimental results obtained during vacuum-contact drying of sugar maple sapwood. The experimental and calculated data are in good agreement. Nevertheless, some discrepancies are observed which can be attributed to the boundary conditions used and to the fact that heat transfer by convection was neglected.
Document Type: Article de recherche
Issue Date: 10 May 2007
Open Access Date: Restricted access
Document version: VoR
This document was published in: Drying technology, Vol. 18 (8), 1737-1778 (2000)
Alternative version: 10.1080/07373930008917809
Collection:Articles publiés dans des revues avec comité de lecture

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