NDLI: Studies of the process of moisture exchange across a membrane using irreversible thermodynamics

Content Provider	Springer Nature Link
Author	Wang, LiNing Min, JingChun
Copyright Year	2011
Abstract	On the basis of non-equilibrium thermodynamic theory, the coupling phenomena of heat and mass transfer during the process of moisture exchange across a membrane were studied and the relevant physical and mathematical models were established. Formulae for calculating the four characteristic parameters included in the non-equilibrium thermodynamic model were derived, and the dependences of these parameters on the temperatures and concentrations on the two sides of the membrane were analyzed, providing a basis for calculating the heat and mass fluxes. The effects of temperature and concentration differences between the two sides of membrane and the membrane average temperature on the transmembrane mass and heat fluxes were investigated. The results show that for a given membrane average temperature, a larger concentration difference or a smaller temperature difference leads to a higher mass flux. For fixed concentration and temperature differences and with the mass flux predominantly caused by the concentration difference, a higher membrane average temperature yields a higher mass flux. The ratio of the heat of sorption induced by mass flow to total heat relates not only to the temperature and concentration differences between the two sides of membrane but also to the membrane average temperature and the ratio increases when the temperature difference is reduced.
Starting Page	1836
Ending Page	1843
Page Count	8
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	56
Issue Number	17
e-ISSN	18619541
Language	English
Publisher	SP Science China Press
Publisher Date	2011-05-25
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	transmembrane moisture exchange heat and mass transfer irreversible thermodynamics characteristic parameter Engineering Earth Sciences Physics Life Sciences Science Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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