Analytical and experimental study of drying process in a porous medium with a nonpenetrating heating surface

This paper formulates a one-dimensional drying process taking place in a we t porous medium with a nonpenetrating heating surface. In this drying proce ss, heat transfer is caused by conduction, and water vapor transfer is caus ed by diffusion. The driving force of the diffusion process is the saturate d water vapor pressure corresponding to the local temperature. The evaporat ion of water and the condensation of water vapor take place simultaneously in the drying process. Evaporation and condensation represent a heat sink a nd a heat source in the porous medium, respectively, which are included in the present problem formulation. The numerical model is validated by compar ison with experimental data.