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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/76472


    Title: Performance Improvement of Countercurrent-Flow Direct Contact Membrane Distillation in Seawater Desalination Systems
    Authors: 何啟東;Ho, Chii-dong;Yang, Zi-jing;Chuang, Yu-Chuan
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Conjugated Graetz problems;Countercurrent;Nusselt number;Direct contact membrane distillation;Pure water productivity
    Date: 2012-07
    Issue Date: 2012-05-10 12:35:03 (UTC+8)
    Publisher: Taylor & Francis
    Abstract: The modeling equations for the temperature distribution and pure water productivity in a parallel-plate direct contact membrane distillation module under countercurrent-flow were derived theoretically with the use of the mass balance on each subchannel. The analytical solution is obtained by using the separated variables method with an orthogonal expansion technique extended in power series. The pure water productivity, average Nusselt number, and temperature distributions of both hot and cold feed streams are represented graphically with the feed velocity and the inlet saline temperature as parameters. The improvements of device performance were achieved under the countercurrent-flow operation. The influences of operation and design parameters on the pure water productivity are also discussed.
    Relation: Desalination and Water Treatment-The 7th Aseanian Membrane Society Conference 51(25-27), pp.5056
    DOI: 10.1080/19443994.2013.768811
    Appears in Collections:[化學工程與材料工程學系暨研究所] 會議論文

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