Simultaneous moisture and heat transfer in porous systems with particular reference to drying

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TypeArticle
Journal titleI & EC Fundamentals
ISSN0019-7874
Volume8
Issue1
Pages92103; # of pages: 12
Subjectdrying; heat transfer; air moisture transfer; porosity; evaporation; condensation; Moisture performance
AbstractBased on an examination of the liquid-vapor equilibria and of the mass and energy transfer processes in porous systems, a theory has been developed for simultaneous mass and heat transfer during the pendular state of such systems. A set of differential equations is presenceed which, when solved with the appropriate initial and boundary conditions, yields the complete moisture content, temperature, and pressure history of the system. By theoretically simulating various drying processes it is shown that during the falling rate period the evaporation-condensation mechanism is the governing mechanism of drying. The application of the theory to transient heat conduction in the presence of moisture and to transient vapor transfer through porous media is also illustrated.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-407
NRC number10854
2536
NPARC number20374346
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Record identifierc8c18b26-681a-46c8-ae69-3e0e1b6a7bab
Record created2012-07-23
Record modified2016-05-09
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