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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/117820


    Title: Mass transfer enhancement in double-pass concentric-tube mass exchangers under sinusoidal wall fluxes with external recycle
    Authors: Chii-Dong Ho;Gwo-Geng Lin;Jing-Min Tang;Li-Chien Liu;Li-Pang Lin;Jr-Wei Tu
    Keywords: Sinusoidal Wall Fluxes;Orthogonal Expansion Technique;Double-pass Operation;Mass Exchanger;Recycle
    Date: 2019-09
    Issue Date: 2019-11-13 12:10:19 (UTC+8)
    Publisher: 淡江大學
    Abstract: The influences of external recycle at the ends on double-pass laminar counterflow concentric-tube mass exchangers with sinusoidal wall flux distribution are investigated analytically. An analytical method is proposed to obtain a general solution by using the complex functions in combining the original boundary value problem into an ordinary differential equation with the aid of Frobenius method. Theoretical results show that a suitable adjustment of the permeable-barrier position can effectively enhance the mass transfer rate, leading to an improved device performance in mass transfer efficiency as compared with that in the single-pass operation (without a permeable barrier inserted in parallel into a circular tube). The mass-transfer efficiency enhancement due to the desirable effect of forced-convection increment in two flow patterns of double-pass devices has been illustrated with the recycle ratio, mass-transfer Graetz number, permeable-barrier location and dimensionless permeable-barrier parameter as parameters.
    Relation: Journal of Applied Science and Engineering 22(3), p.403-412
    DOI: 10.6180/jase.201909_22(3).0002
    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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