非能动余热排出系统的稳态特性研究

Steady-State Behavior of Passive Residual Heat Removal System

  • 摘要: 以AP1000主冷却剂系统为原型,提出了1种二次侧非能动余热排出系统设计方案,并采用RELAP5/MOD3.2程序分析计算了该系统在主系统正常运行和运行瞬变工况下的稳态特性。结果表明,主系统带功率运行时,二次侧非能动余热排出系统可依靠回路工质的密度差和压力平衡使系统自动处于备用状态,不影响主系统的运行。此外,根据计算结果,分析了冷热源位差对系统稳态特性的影响。

     

    Abstract: One design of secondary-side passive residual heat removal system (PRHRS) was presented based on the prototype of AP1000 primary system. The RELAP5/MOD3.2 code was used to simulate and analyze the steady-state behaviors of the PRHR in normal operating conditions and operating transient. The results show that secondary-side PRHR loop is capable of being under standby conditions due to the density difference of hot and cold water and the pressure balance in on-load operating conditions of primary system. In addition, the effect of the height between steam generator and PRHR heat exchanger on steady-state behaviors was analyzed according to the results.

     

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