Device Performance Improvement of Double-Pass Concentric Circular Mass Exchangers under Uniform Wall Fluxes

機構典藏 > College of Engineering > Graduate Institute & Department of Chemical and Materials Engineering > Journal Article > Item 987654321/50497

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/50497

Title:	Device Performance Improvement of Double-Pass Concentric Circular Mass Exchangers under Uniform Wall Fluxes
Authors:	Ho, Chii-dong;Chuang, Yu-chuan;Tu, Jr-wei
Contributors:	淡江大學化學工程與材料工程學系
Keywords:	Flow pattern;Mass transfer;Modeling;Tubes
Date:	2007-04-01
Issue Date:	2010-08-09 18:21:28 (UTC+8)
Publisher:	Wiley - V C H Verlag GmbH & Co. KGaA
Abstract:	A double-pass concentric circular mass exchanger under uniform wall fluxes is produced by inserting a permeable barrier into a circular tube to improve the device performance. The mathematical formulation was developed theoretically for such double-pass, forced-convection, mass-transfer problems which are referred to as conjugated Graetz problems. The analytical solutions are obtained by the linear superposition of an asymptotic solution and a homogeneous solution which are linear in the axial direction and solved with the use of an eigenfunction expansion in a power series. The analytical results show that the mass-transfer rate of a double-pass mass exchanger can be improved compared to that of a single-pass mass exchanger by suitably adjusting the permeable barrier position. Moreover, the ratio of mass-transfer efficiency improvement and power consumption increment is also shown to make good economic sense.
Relation:	Chemical Engineering and Technology 30(4), pp.431-442
DOI:	10.1002/ceat.200600370
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

Files in This Item:

File	Size	Format
0930-7516_30(4)p431-442.pdf	273Kb	Adobe PDF	401	View/Open