首页> 外文会议>HT2008;ASME summer heat transfer conference >STATISTICAL MODEL OF OPERATIONAL PARAMETER INFLUENCE ON THERMAL CONTACT RESISTANCE IN BIMETALLIC L-TYPE FINNED TUBES
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STATISTICAL MODEL OF OPERATIONAL PARAMETER INFLUENCE ON THERMAL CONTACT RESISTANCE IN BIMETALLIC L-TYPE FINNED TUBES

机译:工作参数对双金属L型鳍状管热接触电阻的统计模型

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Statistical model development of operational parameter influence on Thermal Contact Resistance (TCR) in bimetallic L-type finned tubes is presented in this work. The Group Method of Data Handling (GMDH) scheme was utilized to develop a correlation that encompasses most important operational parameters including variation of temperature difference between hot inner flow and cooling air, influence of maximum operational temperature, and effect of repeated heating-cooling cycles. Using experimental data obtained on Cuprum-Aluminum L-type finned tubes and special calculations with the help of the developed model formulae, have permitted the estimating of degree of every parameter influence upon final function. It was found that maximum operational temperature has most influence on the TCR. Such results may be useful for a practical thermal design, and operation of heat exchangers based on bimetallic L-type finned tubes.
机译:在这项工作中,提出了运行参数对双金属L型翅片管的热接触电阻(TCR)影响的统计模型开发。数据处理的分组方法(GMDH)方案用于开发一种相关性,该相关性包含最重要的运行参数,包括内部热流和冷却空气之间的温差变化,最大运行温度的影响以及反复进行加热-冷却循环的影响。利用在铜铝L型翅片管上获得的实验数据以及借助已开发的模型公式进行的特殊计算,可以估算每个参数对最终功能的影响程度。发现最高工作温度对TCR的影响最大。这样的结果对于实际的热设计以及基于双金属L型翅片管的热交换器的操作可能是有用的。

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