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An unsaturated flow of moisture in porous hygroscopic media at low moisture contents

DSpace at IIT Bombay

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Field Value
 
Title An unsaturated flow of moisture in porous hygroscopic media at low moisture contents
 
Creator KOLHAPURE, NH
VENKATESH, KV
 
Subject mass
heat
multiphase transport
drying
moisture sorption isotherm
 
Description A mathematical description of thermal drying process involving various mechanisms of moisture migration such as water sorption, diffusion and solid-moisture interactions in hygroscopic materials is developed for unsaturated flow region. The model has been formulated using microscopic mass balance and volume averaging techniques. The constitutional laws such as Darcy's law are modified to account for solid-moisture interactions. Effective diffusion coefficients were estimated using moisture isotherms for three distinct systems of differing hygroscopicity. Drying curves were simulated using the estimated effective diffusion coefficient for potato, and compared with the experimental data. The analysis demonstrates the strong dependence of the effective diffusion coefficient on the shape of the moisture isotherm. (C) 1997 .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-23T12:20:46Z
2011-12-26T12:56:26Z
2011-12-27T05:45:12Z
2011-08-23T12:20:46Z
2011-12-26T12:56:26Z
2011-12-27T05:45:12Z
1997
 
Type Article
 
Identifier CHEMICAL ENGINEERING SCIENCE, 52(19), 3383-3392
0009-2509
http://dx.doi.org/10.1016/S0009-2509(97)00140-1
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10514
http://hdl.handle.net/10054/10514
 
Language en