乙醇-水混合物中圆柱体非定常冷却的实验研究

I. Molotova, A. Zabirov, V. Yagov, M. Vinogradov, I. Molotov
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引用次数: 0

摘要

本文研究了高温圆柱形试样在不同浓度乙醇-水二元混合物中的冷却过程。圆柱形样品模拟了核电站的燃料棒。对高温物体冷却过程中出现的密集沸腾状态的研究,以及对过渡到这种状态的表面温度进行预测的可能性,将从热物理的角度证实一种新型耐受性燃料的选择。实验是在大气压下以不同的过冷至饱和温度进行的。乙醇-水混合物(40%和60%)作为冷却液。工作样品是一个镍圆柱体。结果表明,随着乙醇加水,冷却过程变得更加激烈。
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An experimental study of unsteady cooling of cylindrical bodies in ethanol-water mixtures
The present paper explores the cooling processes of high-temperature cylindrical samples in ethanol-water binary mixtures with different concentrations. The cylindrical samples simulate fuel rods for nuclear power plants. The study of the occurrence of intensive boiling regime during cooling of high-temperature bodies and the possibility of predicting the surface temperature of the transition to this regime will allow substantiating the choice of a new type of tolerant fuel from the standpoint of thermophysics. The experiments were conducting with different subcoolings to the saturation temperature under atmospheric pressure. Ethanol-water mixtures (40% and 60%) were used as cooling liquids. The working sample was a nickel cylinder. It was shown that with the addition of water to ethanol, cooling processes becomes more intensive.
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