Kun Shan University Institutional Repository:Item 987654321/9814
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    题名: The log mean heat transfer rate method of heat exchanger considering the influence of heat radiation
    作者: 黃景良
    King-Leung Wong
    Ming-Tsun Ke
    Shi-Shi Ku
    贡献者: 機械工程系
    关键词: Heat exchanger
    Heat radiation
    Emissivity
    Log mean heat transfer rate (LMHTR)
    method
    LMTD method
    日期: 2010-01-07
    上传时间: 2010-04-22 17:08:04 (UTC+8)
    摘要: The log mean temperature difference (LMTD) method is conventionally used to calculate the total heat
    transfer rate of heat exchangers. Because the heat radiation equation contains the 4th order exponential
    of temperature which is very complicate in calculations, thus LMTD method neglects the influence of heat
    radiation. From the recent investigation of a circular duct in some practical situations, it is found that
    even in the situation of the temperature difference between outer duct surface and surrounding is low
    to 1 C, the heat radiation effect can not be ignored in the situations of lower ambient convective heat
    coefficient and greater surface emissivities. In this investigation, the log mean heat transfer rate (LMHTR)
    method which considering the influence of heat radiation, is developed to calculate the total heat transfer
    rate of heat exchangers.
    關聯: Energy Conversion and Management 50 (2009) 2693–2698
    显示于类别:[機械工程系所] 期刊論文

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