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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/10465

    Title: The Critical Heat Transfer Characteristics of an Insulated Circular Duct Considering Heat Radiation
    Authors: Jose Luis Leon Salazar
    King Leung Wong
    Wen-Lih Chen
    Contributors: 圖書資訊館
    Keywords: Heat radiation
    critical thickness
    neutral thickness
    insulated circular duct
    natural convection
    Date: 2010-03-20
    Issue Date: 2010-05-28 16:40:13 (UTC+8)
    Abstract: Critical heat transfer of an insulated duct often occurs at small convection effects of
    ambient air, thus heat radiation must be considered. It is found in this study that the critical heat transfer characteristics of an insulated circular duct considering heat radiation are big different from those conventional results neglecting heat radiation. The conventional critical heat transfer characteristics only depend on circular duct size, external convection heat transfer coefficient, and insulation conductivity. In addition to above parameters, the actual critical heat transfer characteristics considering
    heat radiation are also related to the surface emissivities of circular duct and insulation,surrounding temperature, and the internal convection heat transfer coefficient.Meanwhile, it is found that the critical heat transfer does not only apply to small insulated duct and also to big size compound metal duct as well.
    Appears in Collections:[機械工程系所] 中華民國第二十屆燃燒與能源學術研討會

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