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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/65511


    Title: Recycle Effect on Double-Pass Concentric Circular Mass Exchangers under Uniform Wall Fluxes
    Authors: Ho, Chii-Dong;Chuang, Yu-Chuan;Tu, Jr-Wei
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Conjugated Graetz problem;Fluids;Mass transfer;Recycle effects
    Date: 2008-10
    Issue Date: 2013-05-31 11:40:42 (UTC+8)
    Publisher: Weinheim: Wiley - V C H Verlag GmbH & Co. KGaA
    Abstract: A study on improvement in device performance of a double-pass concentric circular mass exchanger with uniform wall fluxes and external refluxes was conducted under counterflow operations. The linear superposition of an asymptotic
    solution and a homogeneous solution with the use of an orthogonal expansion
    technique for solving such a conjugated Graetz problem is formulated theoretically and the analytical predictions are applied to investigate a substantial masstransfer improvement. A mathematical expression for the average Sherwood
    numbers and the outlet dimensionless concentration is given. Comparisons of analytical results are made with the single-pass operations of the same working dimensions (without permeable barriers inserted and without recycle). Considerable device improvement in mass transfer rate is obtained by introducing the recycle-effect concept in designing such double-pass devices. The effect of permeable barriers on the mass-transfer efficiency improvement as well as on the power consumption increment has also been delineated.
    Relation: Chemical Engineering & Technology 31(11), pp.1638-1644
    DOI: 10.1002/ceat.200800244
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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