Drying of Porous Materials
Drying is the process of thermally removing volatile substances (e.g., moisture) to yield a solid product. Mechanical methods for separating a liquid from a solid are not considered drying. When a wet solid is subjected to thermal drying, two processes occur simultaneously: transfer of energy (mostly as heat) from the surrounding environment to evaporate the surface moisture, and transfer of internal moisture to the surface of the solid and its subsequent evaporation due to the first process.
KeywordsEquilibrium Moisture Content Effective Diffusion Coefficient Moisture Transfer Liquid Diffusion Critical Moisture Content
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