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首页> 外文会议>American Society of Mechanical Engineers(ASME) Summer Heat Transfer Conference(HT2005); 20050717-22; San Francisco,CA(UA) >MEASUREMENT OF INTERNAL TEMPERATURE DISTRIBUTION IN PEMFCs BY THE NONDESTRUCTIVE INVERSE METHOD
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MEASUREMENT OF INTERNAL TEMPERATURE DISTRIBUTION IN PEMFCs BY THE NONDESTRUCTIVE INVERSE METHOD

机译：用无损逆方法测量PEMFC的内部温度分布

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摘要

A nondestructive inverse method is developed to determine the internal temperature distribution of PEMFCs. In this study, attention is focused on global measurement for the irregular temperature distribution at the interface between the carbon plate and the membrane electrode assembly (MEA) based on the measured temperature data on the outer surface of the end plate. In this report, a concept of point-by-point temperature prediction is adopted. This approach is particularly suitable for determining an irregular temperature distribution that is difficult to handle by the existing polynomial-function approach. A number of test cases are considered in this study. Three irregular temperature functions are specified and regarded as exact temperature distributions for testing the performance of the approach. Influence of the uncertainties of the measured temperature data on the outer surface and the number of the temperature prediction points (NXxNY) on the end plate surface is evaluated. In addition, the effects of the initial guess on the uniqueness of the predictions are also investigated.
机译：开发了一种无损逆方法来确定PEMFC的内部温度分布。在这项研究中，注意力集中在根据端板外表面上测得的温度数据对碳板和膜电极组件（MEA）之间的界面处的不规则温度分布进行整体测量。在此报告中，采用了逐点温度预测的概念。该方法特别适合于确定难以通过现有的多项式函数方法处理的不规则温度分布。在这项研究中考虑了许多测试用例。指定了三个不规则的温度函数，并将其视为用于测试方法性能的精确温度分布。评估了测得的温度数据在外表面上的不确定性以及端板表面上的温度预测点（NXxNY）数量的影响。此外，还研究了初始猜测对预测唯一性的影响。

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