摘要
目前压力容器外部冷却(ERVC)作为严重事故管理策略中压力容器内熔融物滞留(IVR)的一部分已得到了广泛应用。本文采用RELAP5系统安全分析程序定性研究一些流动参数和边界条件(如进出口面积、冷却水的入口温度、下封头处的加热功率、下封头处流道的间隙尺寸及注水高度等)对大功率先进压水堆压力容器外部冷却的自然循环能力产生的效应,它为结构的设计和系统的瞬态响应行为提供了一定的分析依据。
External reactor vessel cooling （ERVC ） is widely adopted as a part of in-vessel retention （IVR） in severe accident management strategies .In this paper ,some flow parameters and boundary conditions , eg ., inlet and outlet area , water inlet temperature ,heating power of the lower head ,the annular gap size at the position of the lower head and flooding water level ,were considered to qualitatively study the effect of them on natural circulation capacity of the external reactor vessel cooling for an advanced large size PWR by using RELAP5 code .And the calculation results provide some basis of analysis for the structure design and the following transient response behavior of the system .
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2014年第2期277-284,共8页
Atomic Energy Science and Technology
关键词
大功率先进压水堆
压力容器外部冷却
自然循环能力
advanced large size PWR
external reactor vessel cooling
natural circulation capacity
