Title

Generalized theoretical model of combined heat, air and moisture transfer in porous media

Abstract

Combined heat, moisture and air transfer in porous media is a complicated phenomena. In addition to energy liberated during phase conversion, heat is transferred not only by conduction, but by advection as well. Similarly, moisture transfer occurs by vapor diffusion and advection due to air pressure gradients. Moisture is accumulated and stored in porous media as a function of the material sorption isotherm. A generalized theoretical model combining all influences of heat and mass transfer in porous media is presented in this paper. The 'evaporation and condensation theory' is modified to include the advection terms. The air pressure equation is derived without the typical isothermal assumption and liquid moisture diffusion is included to account for capillary forces.

Publication Date

12-1-1993

Publication Title

American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

Volume

173

Number of Pages

47-55

Document Type

Article

Identifier

scopus

Socpus ID

0027809912 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027809912

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