本文介绍了低温供热反应堆启动的实验研究结果,描述了两相流稳定性对低温自然循环沸水反应堆启动的影响,提出沸水启动要经过压水启动和压水向沸水转换两个过程来实现。研究了三种从压水向沸水转换的方法。在此基础上,提出了用小功率,小过冷度从压水向沸水转换的过渡方案,此方案可保证在整个启动过程中流动的稳定。 In this paper, the experimental results of the startup of low-temperature heating reactors are introduced. The effects of two-phase flow stability on the startup of low temperature natural circulation boiling water reactors are described. It is proposed that the starting of boiling water is initiated by the start of pressurized water and the conversion of pressurized water to boiling water. Three methods of converting from pressurized water to boiling water were studied. On this basis, the scheme of transition from pressure water to boiling water with small power and small degree of supercooling is put forward. This scheme can ensure the stability of the flow during the whole starting process.