An experimental study was performed of the influence of mixing intensifier-grids on the cooling of a 37-rod electrically heated TVS-2M model with top and bottom reflooding. It is shown that the mixing grids bring about a very small reduction of the maximum temperature of the rods and longer cooling time of the assembly. To cool the TVS-2M model, the starting temperature of the fuel-rod simulators and the power input can be significantly lower in top reflooding than in bottom reflooding. The effect of the flooding rate is similar to that observed in bottom flooding – as the flooding rate increases, the maximum temperature of the rods and the cooling time of the assembly decrease. The experiments showed that with reflooding the mixing grids do not greatly affect the cooling efficiency of TVS-2M.

中文翻译：

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TVS-2M 模型 FA 与再注水的冷却研究

对混合增强器格栅对顶部和底部再注水的 37 杆电加热 TVS-2M 模型的冷却影响进行了实验研究。结果表明，混合格栅使棒的最高温度降低很小，并延长了组件的冷却时间。为了冷却 TVS-2M 模型，顶部再注油的燃料棒模拟器的起始温度和功率输入可以显着低于底部注水。溢流率的影响类似于在底部溢流中观察到的影响——随着溢流率的增加，杆的最高温度和组件的冷却时间降低。实验表明，在重新注水时，混合网格不会显着影响 TVS-2M 的冷却效率。