The project studied the direct contact condensation behavior of saturated steam on the subcooled liquid in passive gravity injection system . the experiment parameters were as follows : the initial pressure of prz ranged from 0 . 2 0 . 6mpa and the initial fluid temperature of core makeup tank ranged from 10 80 . condensation phenomenon in cmt was observed 本课题进行了非能动重力补水系统中饱和蒸汽在过冷液面上直接接触冷凝的实验研究，研究了在加装遮流板时，系统压力0 . 2 0 . 6mpa ， cmt初始温度为10 80条件下压力容器cmt中饱和蒸汽在过冷液面上冷凝的瞬态特性。
