The dynamics of acoustic-convective drying of coniferous sawdust has been studied. The absolute and relative initial moisture content of the starting material was determined by thermal-vacuum drying to be 12.92% and 11.40%, respectively. Determination of the dynamics of capillary wetting of a number of sawdust samples showed that the limiting absolute moisture content was 382.30% and the limiting relative moisture content 78.49%. Kinetic curves of the moisture extraction by acoustic-convective, thermal-convective, and thermal drying under different conditions were constructed and analyzed. It is concluded that the acoustic-convective drying method has an advantage over the thermal- convective and thermal methods.
Topics
Acoustics
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