【摘要】 采用TACSNR程序建立了SCoRe-TE固有安全空间堆电源系统瞬态分析模型，对在轨启动参考方案进行了数值模拟，研究了该方案下系统启动过程中各主要参数的变化规律，获得了反应性、堆芯功率、冷却剂流量、温度、泵供电TE转换器两端温差、热管蒸汽与翅片温度等关键参数随时间的变化关系。结果表明，系统稳态后，SCoRe-TE的各项模拟参数符合空间堆的设计参数。该研究提供了更详细的SCoRe-TE电源启动过程热工水力参数，可为固有安全空间堆方案的优化和启动控制策略的制定提供参考。更多还原

【Abstract】 A transient analysis model of SCoRe-TE initial safety space reactor power system is established by using TACSNR program. The on-orbit start-up reference scheme is simulated and analyzed. Timedependent variations of the main parameters during start-up process are studied. Curves of reactivity, core power, coolant flow rate, temperature, TE transformer end-to-end temperature difference, heat-pipe vapor and fin temperature versus time are obtained. After steady-state is reached, the predicted parameters agree well with the design values. The detailed thermal-hydraulic data provide a reference for optimizing the inherently safe space reactor and for developing its start-up control strategy.更多还原