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    題名: Mass Transfer Enhancement in Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Wall Fluxes
    作者: Ho, Chii-Dong;Lee, Po-Chun;Tu, Jr-Wei
    日期: 2009-08-03
    上傳時間: 2016-10-22 02:11:36 (UTC+8)
    出版者: Wiley - V C H Verlag GmbH & Co. KGaA
    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.
    關聯: Chemical Engineering & Technology 32(10), pp.1567-1577
    DOI: 10.1002/ceat.200900121
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

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