AP1000钢制安全壳厚度对传热性能的影响

Effect of AP1000 Steel Containment Thickness on Heat Transfer Performance

摘要: AP1000是目前世界上安全性最高的第三代大型压水堆之一，相比于二代压水堆，其重要特征是将预应力混凝土的安全壳改为钢制安全壳，在整个冷却过程中钢制安全壳起着重要的作用。本文利用WGOTHIC程序建立AP1000整体长期空气冷却模型，对安全壳厚度进行研究，得到了传热性能与安全壳厚度的关系。结果表明，在一定范围内随安全壳厚度的增加，总体安全性得到较大提升，这为采用钢制安全壳的核电站设计提供了理论参考。

Abstract: AP1000 is one of the safest advanced power water reactors. Comparing with generation Ⅱ power plant, an obvious character of AP1000 is using steel containment instead of concrete containment. The steel containment is very important in the whole heat transfer process. The thickness of containment was studied using WGOTHIC to establish long term air cooling model and the relationship between the heat transfer performance and containment thickness was found. The results show that the safety is raised while increasing the containment thickness in a certain range. It is a reference for the power plant with steel containment design.