Fig. 3. a. Sawdust drying rate at different H/D values. Initial moisture content of
sawdust was 60 wt.% (wb) and bed and air temperatures were 90 °C. Air velocity was
0.32 m s−1. b. Sawdust drying rate as a function of moisture content at different H/D
values. Initialmoisture content of sawdustwas 60 wt.% (wb) and bed and air temperatures
were 90 °C. Air velocity was 0.32 m s−1.