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Temperature influence on transport parameters characteristic of Knudsen and Poiseuille flows

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Izquierdo Gil, María Amparo (2008) Temperature influence on transport parameters characteristic of Knudsen and Poiseuille flows. Chemical Engineering Science, 63 (22). pp. 5531-5539. ISSN 0009-2509

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Official URL: http://dx.doi.org/10.1016/j.ces.2008.07.034


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Abstract

Single gas permeation experiments results using neon, argon, nitrogen and methane are reported. From gas permeation experiments the characteristic parameters of the Knudsen and Poiseuille transport mechanisms were determined by means of an equation derived from the "Dusty-Gas" model. The experiments were performed at different temperatures from 303.15 to 323.15K, in order to study the temperature influence on those parameters. For PVDF and PCTE membranes the influence of the temperature on K, and B. parameters was not significant. Gas influence was also investigated for both types of membrane, a slight tendency of K, to decrease with increase in molar mass and a very slight tendency of B. to increase with increase in molar mass, although these trends were not fulfilled by neon gas.


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© 2008 Elsevier Ltd. The author wishes to thank to Professor C. Fernández Pineda for his help and support and to CICYT (Spain), Project BFM2003-07197, for the financial support accorded to this work.

Uncontrolled Keywords:Gas Permeation, "Dusty-Gas" Model, Knudsen Flow, Viscous Flow
Subjects:Sciences > Physics > Thermodynamics
ID Code:25195
Deposited On:30 Apr 2014 07:56
Last Modified:11 Mar 2016 19:29

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