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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26905


    Title: A general modeling for heat transfer during reflux condensation inside vertical tubes surrounded by isothermal fluid
    Authors: Chou,GH;Chen,JC
    Contributors: 機械工程研究所
    Keywords: 2-PHASE CLOSED THERMOSYPHON
    Date: 1999
    Issue Date: 2010-06-29 18:02:56 (UTC+8)
    Publisher: 中央大學
    Abstract: An analytical modeling of condensation heat transfer characteristics under reflux cooling mode inside vertical tubes surrounded by isothermal external fluid was conducted in the present work. The dimensionless film thickness, film Reynolds number as well as the heat transfer coefficient in the condensate film were formulated and calculated numerically. The results indicate that the increase in Blot number thickens the film layer, speeds the film Reynolds number, and increases the condensation heat transfer coefficient. As Bi much greater than 1 and (N) over cap u = 1, the limiting cases for both isothermal wall and uniform wall heat flux, respectively, were derived for comparison. As compared with the experimental data of reflux condensation from previous studies, the analytical results show good agreement with the observed trend of the condensation heat transfer. (C) 1999 Elsevier Science Ltd. All rights reserved.
    Relation: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
    Appears in Collections:[機械工程研究所] 期刊論文

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