饱和蒸汽在过冷液面凝结特性的实验研究  

Experimental Study of Saturated Steam Concreting on the Surface of Sub-cooled Liquid

作　　者：李夔宁[1] 彭云康[2] 童明伟[1] 谭曙时[2] 

机构地区：[1]重庆大学动力工程学院,400044 [2]中国核动力研究设计院,成都610041

出　　处：《核动力工程》2003年第6期531-534,共4页Nuclear Power Engineering

摘　　要：实验研究了堆芯补水箱上部加装遮流板时,饱和蒸汽在过冷液面上直接接触冷凝的瞬态特性。研究表明,遮流板改变了蒸汽射流的方向,减弱了近液面层的波动,降低了蒸汽的凝结速率,使堆芯补水箱中热水层的厚度减小,系统压力响应时间缩短。与无遮流板相比,实验初期水表面凝结换热系数降低76%～92%,总凝结量减少67%以上。The transient characteristics of saturated steam directly concreting on the surface of sub-cooled liquid when sparger was added to core makeup tank (CMT) were studied. It shows that the sparger changes the direction of steam moving, decreases the wave of liquid and the rate of steam concreting, which decreases the thickness of hot water layer in CMT and time of pressure response. Compared with the state of not using sparger, the heat transfer coefficient of concreting was reduced by 76%-92%, the total amount of concreted water was reduced by more than 67%.

关 键 词：饱和蒸汽 过冷液面 凝结 堆芯补水箱 压力响应 热水层 遮流板 

分 类 号：TL33[核科学技术—核技术及应用]