No abstract

No abstract

No abstract

No abstract

A series of experiments on the convective drying of Pinw radiata has been undertaken at the CSIRO Division of Forest Products in Auswia. This paper uses the experimental results to compare predictions from both a comprehensive mathematical model, which includes wood temperature, moisture content and pressure distributions, and a simplified model (two versions) which assumes constant total pressure. From the. simulations, it is seen that both models adequately predict the ovenll kinetics of the wood drying process. For a complete understanding of the heat and mass transfer phenomena that occur in wood during drying the comprehensive model is necessary. However, it is computationally long and expensive, and as such, does not suit the practical drylng needs of the timber industry in Australia. Consequently, the simplified model, which has acceptable computation time and sufficient accuracy for engineering purposes, enables the wood drylng process to be optimised from both performance and economic perspectives.