Abstract
Unsteady one-dimensional heat and mass transfer with phase change in a porous slab is analytically investigated. It is shown that for a large class of problems the rate of motion of the wet zone can be decoupled from the transient change in the temperature and species fields, and the unsteady process can be reduced to that of quasi-steady fields in time-dependant domains. Analytical results are presented for mobile and immobile condensates. Reasonable agreement between the analytical solutions and experimental data is obtained.
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