P-13 バッチ式乾燥機による木質チップの乾燥効果

抄録

The demand of wood chips increases along with the expansion of woody biomass use. However, wood as a resource has finitude. So, it is required to utilize the calorific value of wood as efficiently as possible. Therefore, focusing on the drying process as a means for it, and a test using a batch type drying facility was conducted. The test facility was a convective heat transfer system in which wood chips of about 6 m³ were filled in containers and warm air was applied from the bottom. Comparative study was conducted by changing the main test factors as air volume per 1 cubic meters chip. As a result, it was confirmed that the increase in air volume is effective for improving water evaporation rate, but the drying efficiency growth slowed when the air volume per 1 cubic meters of chips exceeded 200 m³/ h.