【摘要】 本文给出了位于上空腔的中小尺寸管道破裂或安全阀意外开启引起的小破口失水事故实验研究。在实验中研究了系统压力、温度、空泡份额的变化和总失水量。结果表明总失水量约为初始装水量的百分之二十。这种事故对于清华大学核能研究所建造的低温供热堆是安全的。更多还原

【Abstract】 A simulation experiment of small break LOCA is introduced,which was caused by the breakdown of a small size or middle size pipe located at upper plenum,or by unexpected opening the safety valve.In the tests, the system pressure, temperature, void fraction and total loss of water were studied. The results showed that the total loss of water was nearly 20% of initial loading water. It means under this condition the 5MW low temperature heating reactor being built in Institute of Nuclear Energy Technology of Tsinghua University is safe.更多还原