膜态沸腾是反应堆失水事故的再淹没阶段中的一个重要传热工况。两相的热力不平衡是这一工况的重要特征。最低膜态沸腾温度也是再淹没速度的主要影响参数之一。但迄今这些方面仍缺乏充分的实验数据和合适的分析模型,各公式之间差别甚大,参数影 Film boiling is an important heat transfer condition in the submergence phase of reactor water loss. The thermal imbalance between the two phases is an important feature of this condition. The lowest membrane boiling temperature is also one of the major influence parameters of submergence speed. However, up to now, these aspects still lack sufficient experimental data and appropriate analytical models, and the formulas vary greatly.