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Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

BROCHE, W; ANANIAS, R.A; SALINAS, C  y  RUIZ, P. DRYING MODELLING OF CHILEAN COIGUE: Part 2. EXPERIMENTAL RESULTS. Maderas, Cienc. tecnol. [online]. 2002, vol.4, n.1, pp.69-76. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2002000100006.

A one-dimensional phenomenological wood drying model is used to describe the conventional drying kinetic of Chilean coigüe Nothofagus dombeyi. The model is based on a global mass transfer coefficient (Kx), it consists of a system of four 1st order coupled partial differential equations and is finite differenced and solved like a initial value problem. In order to determine Kx four drying cycles were performed varying the wood thickness and the drying air velocity. The model suitably predicted the humidity transient behavior during the coigüe wood drying. Kx varied with the wood thickness but not with the air velocity. The value of this coefficient oscillated between 1,87· 10-5 and 3,37 · 10-5 kg/m2s

Palabras clave : Wood drying model; global mass transfer coefficient; finite different; Nothofagus dombeyi.

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