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%.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2003年第6期531-534,共4页
Nuclear Power Engineering
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
Heat transfer coefficients
Loss of coolant accidents
Pressure effects
Reactor cores
Water
