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    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/123111


    題名: Permeate Flux Enhancement in Air Gap Membrane Distillation Modules with Inserting Λ-Ribs Carbon-Fiber Open Slots
    作者: Chii-Dong Ho;Luke Chen;Yan-Ling Yang;Shih-Ting Chen;JunWei Lim;Zheng-Zhong Chen
    關鍵詞: air gap membrane distillation;permeate flux;hydrodynamic angles;temperature polarization;carbon-fiber open slots
    日期: 2023-01-04
    上傳時間: 2023-04-28 16:58:43 (UTC+8)
    出版者: MDPI, Basel, Switzerland.
    摘要: A novel design of an air gap membrane distillation (AGMD) module was proposed to
    enhance the permeate flux improvement for the desalination of pure water productivity. The modeling
    equations for predicting permeate flux in the AGMD module by inserting Λ-ribs carbon-fiber open
    slots under various hydrodynamic angles were developed theoretically and experimentally. The
    temperature distributions of both hot and cold feed streams were represented graphically with the
    hot saline flow rate, inlet saline temperature, and carbon-fiber hydrodynamic angles as parameters.
    The results showed a good agreement between the experimental results and theoretical predictions.
    Designed by inserting Λ-ribs carbon-fiber open slots into the flow channel, the membrane distillation
    module was implemented to act as an eddy promoter and yield an augmented turbulence flow.
    The effect of Λ-ribs carbon-fiber open slots not only assured the membrane stability by preventing
    vibration but also increased the permeate flux by diminishing the temperature polarization of the
    thermal boundary layer. The permeate flux improvement by inserting Λ-ribs carbon-fiber open
    slots in the AGMD module provided the maximum relative increment of up to 15.6% due to the
    diminution of the concentration polarization effect. The experimental data was incorporated with
    the hydrodynamic angle of Λ-ribs carbon-fiber open slots to correlate the enhancement factor with
    the Nusselt numbers to confirm the theoretical predictions. The accuracy derivation between the
    experimental results and theoretical predictions was pretty good, within 9.95 ≤ E ≤ 1.85. The
    effects of operating and designing parameters of hot saline flow rate, inlet saline temperature, and
    hydrodynamic angle on the permeate flux were also delineated by considering both the power
    consumption increment and permeate flux enhancement.
    關聯: Membranes 13(1), p.66
    DOI: 10.3390/membranes13010066
    顯示於類別:[水資源及環境工程學系暨研究所] 期刊論文

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