基于灰色关联度的超临界水自然循环换热系数影响因素分析  

Analysis of Heat Transfer Coefficient on Natural Circulation of Supercritical Water Based on Grey Relational Model

作　　者：陈娟[1,2] 马栋梁[1,2] 周涛[1,2] 齐实[1,2] 肖泽军[3] 

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]非能动核能安全技术北京市重点实验室,北京102206 [3]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610041

出　　处：《核动力工程》2017年第2期19-23,共5页Nuclear Power Engineering

基　　金：中核核反应堆热工水力技术重点实验室基金(20130901);核反应堆系统设计技术重点实验室基金(2015BJ0151)

摘　　要：在严重事故评价中,超临界水冷反应堆将充分利用自然循环的驱动力在循环中带走堆芯余热。影响超临界水换热系数的影响因素有很多,而定量地确定各个因素之间对换热系数的影响的大小,对于改善超临界水冷反应堆的设计,具有一定的现实参考意义。通过提取超临界水自然循环的实验数据点,选取加热段功率、管径、系统压力、入口温度、出口温度、出口壁温和系统循环流量等7个因素,应用灰色关联度分析方法,分析这些因素对换热系数的关联程度的大小。不同的分辨率对计算关联度的大小有较大影响。选取的分辨率越小时,各因素之间的关联度区分的越大。通过超临界水自然循环换热系数的灰色关联度大小的分析,可以为换热系数的预测提供理论依据。In the case of severe accident evaluation, supercritical water-cooled reactors will take advantage of the natural circulation driving forces to carry the core waste heat in the cycle. But there are many factors influencing the supercritical water heat transfer coefficient. Quantitative determination of the influence of each factor on the heat transfer coefficient has certain practical reference value for improving the design of supercritical water-cooled reactor. Based on the experimental data of supercritical water in natural circulation, seven factors are selected to analysis the HTC （heat transfer coefficient） using the grey relational model. The factors include heating power, diameter, system pressure, inlet temperature, outlet temperature, wall outlet temperature and system circulation flow rate and so on. Through the analysis, we can get that the resolution has important effects on the grey relational model result. Through the analysis of the grey correlation degree about heat transfer coefficient, it can provide theoretical basis for the prediction of heat transfer coefficient.

关 键 词：灰色关联度 超临界水 换热系数 分辨率 影响因素 

分 类 号：TL33[核科学技术—核技术及应用]