摘要
针对基于“分离式热管”构成的非能动安全壳冷却系统,通过数值模拟,研究了热源功率、安全壳初始压力和冷源环境温度对PCCS瞬态特性和传热性能的影响。结果表明:热源功率会直接影响系统工质工作温度,从而对自然循环的流动不稳定性和循环流量造成较大影响。安全壳初始压力通过影响系统上水平管饱和温度,从而对循环系统的流量、流动不稳定性造成影响。冷源环境温度会通过影响冷热源温差,从而对循环系统的流量、流动不稳定性造成影响。基于“分离式热管”技术的非能动安全壳冷却系统具有良好的启动特性,可实现事故工况下安全壳内热量的顺利导出。
For passive containment cooling system with separate type heat pipes.The effect power,containment pressure and ambient temperature on transient characteristics of PCCS and heat transfer performance are numerically calculated respectively.The results show that the decay heat affects the fluid working temperature in the system,which has a great influence on the flow instability and flow rate of natural circulation.The containment pressure also affects the saturation temperature at local pressure in the rising pipe,and then affecting the circulation flow rate and the flow instability.The initial ambient temperature affects temperature difference of cold and heat source,which has a great influence on the circulation flow rate and the flow instability.The started-up of passive containment cooling system work well.When a nuclear accident occurs,it can remove a great deal of heat in containment.
作者
化新超
李星星
潘良明
Hua Xinchao;Li Xingxing;Pan Liangming(Research Institute of Nuclear Power Operation,Wuhan 430000,China;Wuhan Gathering Wisdom Environmental Protection Technology Co.,Ltd,Wuhan 430000,China;Chongqing University Chongqing 400030,China)
出处
《核安全》
2022年第3期62-69,共8页
Nuclear Safety
关键词
分离式热管
非能动安全壳冷却系统
启动特性
流动不稳定性
separate type heat pipe
passive containment cooling system
transient characteristics
flow instability
