Modeling of Mass Transfer in Multi-pass Mass Exchangers with External Recycle

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题名:	Modeling of Mass Transfer in Multi-pass Mass Exchangers with External Recycle
作者:	Ho, Chii-dong;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:	2006-05-24
上传时间:	2011-05-20 09:58:34 (UTC+8)
摘要:	The mass transfer in a multi-pass mass exchanger with external recycle has been investigated theoretically. The analytical solutions were obtained by using the orthogonal expansion technique associated with the eigenfunction expanding in terms of an extended power series. The influences of the subchannel thickness ratio β, recycle ratio R, and the parameter of permeable barrier γ on the outlet concentration and mass transfer efficiency were discussed and represented graphically in the present study. The mass transfer efficiency improvement by employing the multi-pass mass exchangers with recycle was defined as the percentage increase in mass-transfer rate, based on that of a single-pass device with same working dimensions and without external recycle and any permeable barrier inserting. Considering both mass transfer efficiency improvement and power consumption increment, an optimal device performance of multi-pass mass exchangers can be obtained with the suitable adjustment of the permeable barrier locations.
關聯:	Proceedings of the 17th IASTED International Conference on MODELLING AND SIMULATION, Montreal, Canada, pp.148-153
显示于类别:	[化學工程與材料工程學系暨研究所] 會議論文

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