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RESEARCH PAPERS: Phase-Change Heat Transfer

An Analytical Solution and Sensitivity Study of Sublimation-Dehydration Within a Porous Medium With Volumetric Heating

[+] Author and Article Information
E. P. Scott

Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0238

J. Heat Transfer 116(3), 686-693 (Aug 01, 1994) (8 pages) doi:10.1115/1.2910923 History: Received January 01, 1993; Revised August 01, 1993; Online May 23, 2008

Abstract

A study of sublimation-dehydration within a porous medium as a result of volumetric heating, such as that associated with microwave heating, is presented in this paper. A semi-infinite frozen porous medium with constant thermal properties subject to a sublimation-dehydration process involving a volumetric heat source is considered. One-dimensional analytical solutions for dimensionless temperature, vapor concentration, and pressure were obtained. A sensitivity study was also conducted in which the effects of the material properties inherent in these solutions were analyzed. Finally, some of the assumptions used in the formulation of the problem were analyzed, and predicted drying curves were found to compare reasonably with previously published experimental results.

Copyright © 1994 by The American Society of Mechanical Engineers
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