超临界水圆管传热实验的偏差敏感性分析  

Error Sensitive Analysis for Circular Pipe Heat Transfer Experiments with Supercritical Water

作　　者：臧金光[1] 闫晓[1] 李永亮[1] 黄志刚[1] 黄彦平[1] 

机构地区：[1]中国核动力研究设计院中核核反应堆热工水力重点实验室,成都610213

出　　处：《核动力工程》2016年第6期15-17,共3页Nuclear Power Engineering

基　　金：国家杰出青年科学基金(No.11325526);四川省学术和技术带头人培养资金资助

摘　　要：从敏感性的角度分析超临界水在拟临界区特殊的物性变化对于壁温偏差的放大作用。首先以超临界传热公式为例讨论换热系数对热工参数的敏感性,然后以超临界圆管实验为例,讨论对称布置的热电偶测量到的壁温偏差在拟临界区的放大效果。分析表明:拟临界区的物性因素可能使圆管的周向均匀性特征不再满足,这是造成传热公式分散性的可能原因之一。This paper presented that the strong variation of fluid properties in the pseudocritical region would amplify the error of elemental T/H parameters. Firstly, the T/H sensitive analysis of heat transfer coefficient was performed with a typical heat transfer correlation. Then, the wall temperature deviation of two symmetrical thermal couples was discussed in the circular pipe supercritical water heat transfer experiments. It suggests that the pseudocritical fluid properties may alter the circumferential uniform characteristics of the circular pipe and could be the reason for the scatter of the heat transfer correlations.

关 键 词：超临界 传热 偏差 敏感性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]