Mass Transfer Modeling of Conjugated Graetz Problem in Multi-Pass Mass Exchangers with External Recycle

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 987654321/52761

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题名:	Mass Transfer Modeling of Conjugated Graetz Problem in Multi-Pass Mass Exchangers with External Recycle
作者:	何啟東;Ho, Chii-dong;涂志偉;Tu, Jr-wei
贡献者:	淡江大學化學工程與材料工程學系
关键词:	Mass transfer;External recycle;Multi-pass operations;Conjugated graetz problem
日期:	2006-12-01
上传时间:	2010-12-01 10:29:12 (UTC+8)
出版者:	臺北縣：淡江大學
摘要:	A new design of multi-pass mass exchanger with external recycle and the mass transfer in such a device have been investigated theoretically in this study. The analytical solutions were obtained by applying an orthogonal expansion technique associated with the eigenfunction expanding in terms of an extended power series. The influences of the design parameters (the subchannel height ratio, and permeable membrane parameter, ) and operating conditions (the recycle ratio, R, and mass-transfer Graetz number, Gzm) on the outlet concentration and mass transfer rate were discussed and represented graphically. Comparing to the single-pass mass exchangers without external recycle, the mass transfer efficiency was improved by employing the multi-pass devices with external recycle. In economic sense, the optimal operating conditions, say R = 1, ab = cd = 1/3 and Gzm > 30 for = 10, were selected by considering both the mass transfer efficiency improvement and power consumption increment in this study.
關聯:	淡江理工學刊=Tamkang journal of science and engineering 9(4)，頁331-342
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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