余热排出实验共获得166组稳态实验数据.数据表明,在本参数范围内,当气温为6～23℃、冷热芯高差11m时,只要风速不小于1.5m/s,即可通过自然循环流动带走堆芯衰变功率.风速、功率和阀门开度的快速变化扰动对系统的稳定运行无大的影响,即系统运行对这些快速小扰动有一定的"容忍性".通过引入系统特征参数建立了分析模型,本文得出含经验系数的自然循环流量等半经验公式.与实验数据比较,98.8%的数据点偏差小于士15%.
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