An Analysis of the Irreversible Thermodynamics Model for Coupled Heat and Moisture Transport Phenomena in Unsaturated Porous Media

摘要

The irreversible thermodynamics-based model for the description of coupled heat and modisture transfer, attributed to Cary and Taylor, was analyzed. The transport coefficients appearing in the model equations were independently determined, and the equations were numerically integrated to predict temperature and moisture content profiles for a closed system of water unsaturated glass beads. An experimental investigation of the moist glass beads medium provided measurements of steady-state profiles of local temperatures and moisture content. These data, when compared with model predictions, indicated the validity of the irreversible thermodynamics approach.