Abstract
Water transport in wet porous materials is expressed as the simultaneous transport of adsorbed water, capillary water and water vapor. The sum of the surface flow coefficient and the liquid water transfer coefficient is defined as the water transfer coefficient in this paper.
The water transfer coefficient was measured by a modified method which is a kind of constant-volume method for adsorption equilibrium. An activated alumina whose pores are fine was used as the experimental material.
Based on the water transfer model previously proposed by the authors, the observed dependence of the water transfer coefficient on water content and temperature were successfully interpreted.
