Abstract

The influence of the average velocity of jet of HFE-7100 dielectric liquid on the heat transfer and the critical heat flux was experimentally studied with the use of an array of 36 submerged impinging microjets at a large initial subcooling. The heating surface was cooled in a slot-shaped channel with a gap of 1 mm for a distributed array of microjets with diameter of 174 \(\mu\)m. With the distributed array of microjets of dielectric liquid with low heat of vaporization and thermal conductivity, at an initial liquid subcooling of 38.2°C relative to the saturation temperature it was possible to obtain a critical heat flux of 237 W/cm² at a jet velocity of 9.56 m/s, which corresponds to a heat release source power of 186 W.

中文翻译：

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HFE-7100 电子设备两相微射流冷却过程中射流速度对临界热通量的影响

摘要

采用36个浸没冲击微射流阵列在大初始过冷度下实验研究了HFE-7100介电液体射流平均速度对传热和临界热通量的影响。加热表面在间隙为 1 mm 的槽形通道中冷却，微射流分布阵列直径为 174  μm。利用具有低汽化热和导热率的介电液体微射流的分布式阵列，在相对于饱和温度38.2°C的初始液体过冷度下，可以在射流处获得237 W/cm 2 的临界 热^通量速度为9.56 m/s，对应的热释放源功率为186 W。