The Liquid Fraction of Moisture Transfer in the Drying Process of a Bed of Granular and Powdered Materials

Abstract

To investigate the mechanism of the moisture transfer in the drying process of a bed of non-adsorptive granular and powdered materials, the drying experiments of a bed of such materials containing the dilute NaCl solution were performed. The liquid fraction of moisture transfer was defined and calculated from the experimental data. The drying mechanism during the first falling rate period was deduced from these results.