CFBR-II堆反应性温度效应分析  

Analysis of Reactivity Temperature Effect of CFBR-II

作　　者：赵小林[1] 范晓强[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核动力工程》2008年第5期29-32,共4页Nuclear Power Engineering

摘　　要：根据单群微扰理论分析了CFBR-II堆反应性温度效应,给出了CFBR-II堆在稳态和脉冲两种运行工况下的反应性温度系数的理论计算公式,分析和讨论了影响CFBR-II堆反应性温度系数的各种因素。结果表明:CFBR-II堆稳态和脉冲反应性温度系数均为负值,其值各不相等;CFBR-II堆稳态反应性温度系数取决于堆体的结构尺寸及材料组成、堆体各部件之间以及堆体与堆外环境之间的换热条件,与稳态运行功率无关;堆脉冲反应性温度系数在整个脉冲过程中近似为常数,其值取决于堆体的结构尺寸及材料组成。The reactivity temperature effect of CFBR-Ⅱ reactor is analyzed with single-group perturbation theory., the calculation formulas of the reactivity temperature coefficients of CFBR-Ⅱ reactor under steady-state and pulse-state are obtained, and the factors that have influence on reactivity- temperature-coefficient of CFBR-Ⅱ reactor are discussed. These results show that the reactivity temperature coefficients of CFBR-Ⅱ under steady-state and pulse-state are negative, which values are not equal. The reactivity temperature coefficient of CFBR-Ⅱ under steady-state is depended on the reactor structure and materials, the thermal exchange conditions in reactor core and between reactor and surroundings, which value is independed on the reactor power. The reactivity temperature coefficient of CFBR-Ⅱ reactor under pulse-state is an approximate constant during pulse, which value is depended on the reactor structure and materials.

关 键 词：CFBR-Ⅱ堆 反应性温度系数 单群微扰理论 

分 类 号：TL384[核科学技术—核技术及应用] TL413.1