Mass Transfer Enhancement in Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Wall Fluxes
學年 98
學期 1
出版(發表)日期 2009-09-25
作品名稱 Mass Transfer Enhancement in Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Wall Fluxes
作品名稱(其他語言)
著者 Ho, Chii-dong
單位
出版者
著錄名稱、卷期、頁數 Chemical Engineering & Technology 32(10), p.1567-1577
摘要 A device involving mass exchangers with a permeable membrane inserted to divide the open duct into two subchannels for conducting double-pass laminar countercurrent operations under asymmetric wall mass fluxes, which results in a substantial improvement of the mass transfer, has been developed and investigated theoretically. The resultant partial differential equations for such a double-pass forced-convection mass transfer problem are referred to as conjugated Graetz problems and solved analytically in this work by using an eigenfunction expansion in terms of power series for the homogeneous part and an asymptotic solution for the inhomogeneous part. The theoretical predictions of mass transfer efficiency improvement in double-pass, parallel-plate mass exchangers are obtained by suitably adjusting the permeable membrane location. They are represented graphically and compared with the results from an open duct of a single-pass operation (without a permeable membrane inserted). The increment of power consumption is also discussed.
關鍵字 Asymmetric wall fluxes;Conjugated Graetz problems;Double-pass operation;Mass transfer;Performance improvement
語言 en
ISSN 1521-4125
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度
國別 DEU
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/108050 )