Fig. 4. a. Effect of air velocity on sawdust fluidization behavior. Initial moisture content of
sawdust was 60 wt.% (wb) and bed and air temperatures were 90 °C. b. Effect of bed temperature
on sawdust fluidization behavior. Initial moisture content of sawdust was 60 wt.%
(wb) and air temperature was 90 °C. Air velocity was 0.32 m s−1.