Recycle Effect on Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Uniform Wall Concentrations

doi:10.1252/jcej.13we126

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Title:	Recycle Effect on Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Uniform Wall Concentrations
Authors:	Chii-Dong Ho;Chi-Chin Kuo;Cheng-Yi Lin;Jr-Wei Tu
Contributors:	淡江大學化學工程與材料工程學系
Keywords:	Mass Transfer;Recycle Effect;Double-Pass Operation;Conjugated Graetz Problems;Asymmetric System
Date:	2013-09-20
Issue Date:	2017-03-23 02:10:51 (UTC+8)
Publisher:	Kagaku Kogaku Kyokai,Society of Chemical Engineers, Japan
Abstract:	The application of the recycle-effect concept to a double-pass parallel-plate mass exchanger under asymmetric uniform wall concentrations is proposed to enhance device performance. An analytical analysis of the Sherwood number and mass-transfer efficiency improvement is developed, and the theoretical predictions are represented graphically and compared with those in single-pass devices without inserting a permeable membrane. A considerable mass-transfer efficiency improvement is obtained by employing such a recyclic design with a suitable adjustment of the permeable-membrane location and recycle ratio, instead of using the single-pass device without external recycle. The results show that the recyclic double-pass operation can effectively improve the mass transfer efficiency, especially as the device is operated in the larger mass-transfer Graetz number.
Relation:	Journal of Chemical Engineering of Japan 46(9), p.583-587
DOI:	10.1252/jcej.13we126
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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