Journal of Applied Science and Engineering

Published by Tamkang University Press


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Chii-Dong Ho This email address is being protected from spambots. You need JavaScript enabled to view it.1, Jr-Wei Tu1, Yu-Chuan Chuang1 and Chun-Sheng Lin1

1Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University, Tamsui, Taiwan 251, R.O.C.


Received: September 3, 2010
Accepted: July 11, 2011
Publication Date: March 1, 2012

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A new design of the concentric circular mass exchanger with an idealized tubular membrane inserted is investegated theoretically. The recycle-effect concept is introduced to enhance the mass transfer rate of the double-pass concentric circular mass exchanger. A theoretical mathematical model is develped to predict the concentration distribution and mass tranfer efficiency. The analytical solution is obtained by using a linear superposition of an asymptotic solution and a homogeneous solution with the orthogonal expansion technique in terms of power series. The theoretical results show that a considerable mass-transfer efficiency improvement is achieveable by applying the double-pass design with the recycle-effect concept into a single-pass circular mass exchanger under constant wall mass fluxes.

Keywords: Mass Transfer, Modelling, Tubular Membranes, Membrane Processes, Imcompressible Flow


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