Drying Potential Of Humid Air - A Thermodynamical Anlysis

Theoretical analysis of thermodynamical potentials relevant for water vapour transfer processes in the system: wet material - moist air, pertormed in the paper. leads to the conclusion that masimal possible isothermal decrease of chemical potential of water vapour in the moist air might be considered as the measure of humid air afinity to unbound water vapour. The concept developed provides better estimation of the drying ability of humid air of different states, as well as tracing Lines of equal values of humid air drying potential into psychrometric charts and constructing several new types of diagrams for convective drying processes in which air is used as the drying medium.