新开发的非能动安全壳冷却系统(PCS)需要进行试验验证,缩比例试验是一种直接有效的验证方法。本文介绍了PCS综合性能试验台架的比例设计方法、试验台架系统、试验工况。分析了典型试验工况下壳内压力变化情况,气相存在、壳体冷凝换热的无量纲数变化特性,结果表明关键无量纲数处于可接受范围。证明了采用的PCS试验方法的合理、有效,采用该方法设计的台架试验结果可以对原型的物理现象进行准确的相似模拟。 The newly developed passive containment cooling system (PCS) needs to be validated experimentally, which is a direct and effective verification method. This article introduces the PCS integrated performance test bench scale design method, test bench system, test conditions. The variation of pressure inside the shell under typical test conditions, the presence of gas phase and the non-dimensional change of shell condensation heat transfer were analyzed. The results show that the key dimensionless number is in an acceptable range. It is proved that the PCS test method adopted is reasonable and effective. The bench test results designed by this method can accurately simulate the prototype physical phenomenon.