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

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/50497

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题名:	Device Performance Improvement of Double-Pass Concentric Circular Mass Exchangers under Uniform Wall Fluxes
作者:	Ho, Chii-dong;Chuang, Yu-chuan;Tu, Jr-wei
贡献者:	淡江大學化學工程與材料工程學系
关键词:	Flow pattern;Mass transfer;Modeling;Tubes
日期:	2007-04-01
上传时间:	2010-08-09 18:21:28 (UTC+8)
出版者:	Wiley - V C H Verlag GmbH & Co. KGaA
摘要:	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.
關聯:	Chemical Engineering and Technology 30(4), pp.431-442
DOI:	10.1002/ceat.200600370
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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