利用自然循环手段实现事故停堆时衰变热导出的池式钠冷快堆,一般将浸入式钠-钠热交换器设置在热腔室中。事故状态下,从热交换器中流出的冷流体直接在热腔室与堆芯流出的热流体混合,并在热腔室底部形成冷分层,产生与正常自然循环反向的驱动水头,使正常的浮升力驱动水头降低,减少 Natural circulation means to achieve decay heat outage when the accident shutdown sodium-cooled pool reactor, the general sodium immersion sodium-sodium heat exchanger is set in the thermal chamber. In the event of an accident, the cold fluid exiting the heat exchanger mixes directly with the hot fluid exiting the core in the thermal chamber and forms a cold stratification at the bottom of the thermal chamber, producing a driving head in the opposite direction from the normal natural circulation Normal buoyancy drive head to reduce, reduce