External Heat and Mass Transfer Coefficients for Kiln Drying of Timber
- 1 January 1996
- journal article
- research article
- Published by Informa UK Limited in Drying Technology
- Vol. 14 (3-4), 859-871
- https://doi.org/10.1080/07373939608917128
Abstract
Comlations are derived relating the heat-transfer coefficient to the mass- transfer coefficient in kiln drying of timber boards by using the Chilton-Colbum analogy. Existing experimental data for the mass-transfer coefficient of naphthalene vapour in the airstream at low temperature are convened to coefficients under commercial timber drying conditions. The calculated results from this analysis are compared with the values employed by wood drying modellers in their models and it appears that the external transfer coefficients used by the drying mcdellers are generally below the values calculated from the laboratoly data.Keywords
This publication has 4 references indexed in Scilit:
- A THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE CONVECTIVE DRYING OF AUSTRALIANPINUS RADIATATIMBERDrying Technology, 1994
- Time-dependent flow in arrays of timber boards: Flow visualization, mass-transfer measurements and numerical simulationChemical Engineering Science, 1993
- Influence of heartwood-sapwood proportions on the drying kinetics of a boardWood Science and Technology, 1993
- A mathematical model of drying for hygroscopic porous mediaAIChE Journal, 1986