【摘要】 应用RELAP5/MOD3.3程序对二次侧非能动余热排出系统(PRS)的启动方式、换热器换热面积、流动阻力等参数进行敏感性分析。结果表明:补水启动和液柱启动2种启动方式对PRS系统瞬态运行特性的影响不大;37.5%传热面积工况下,补水箱的排放流量较标准工况会相应增大,排空时间也会相应缩短;2倍局部阻力工况下,补水箱的排放流量较标准工况小,排空时间延长了近1000 s。更多还原

【Abstract】 In this paper, sensitivity study of secondary side passive residual heat removal system on starting mode, heat transfer area and flow resistance has been conducted by RELAP5. The results show that both water-injection starting mode and liquid-column starting mode have little effect on the transient characteristics of secondary side passive residual heat removal system. Compared to the standard condition, at the condition of 37.5% heat transfer area, the discharge flow rate of the makeup tank is relatively increased, and the drain time for the makeup tank is relatively decreased. At the condition of double resistance, the discharge flow rate of the make-up tank decreases, while the drain time is increased by 1000 s.更多还原