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针对微型电子设备热失效问题,对14.4 mm3体积内,热密度为150W/cm2的电子设备液体冷却系统进行了研究。通过理论计算分析得出微小结构液体冷却系统槽道肋板高度的最佳值,解决了发热器件在许可温度下正常工作的问题。试验结果证明,水力直径为0.5 mm的该液体冷却系统槽道在层流状态下的理论计算是正确的,得到了宏观传热理论对这个尺度的分析将不受尺度效应的影响。
Aiming at the thermal failure of miniature electronic equipment, the liquid cooling system of electronic equipment with the volume of 14.4 mm3 and heat density of 150 W / cm2 was studied. Through the theoretical calculation and analysis, the best value of the channel rib height of liquid cooling system is obtained, which solves the problem of the normal operation of the heating element under the allowable temperature. The experimental results show that the theoretical calculation of the channel of the liquid cooling system with a hydraulic diameter of 0.5 mm under laminar flow is correct and the macroscopic heat transfer theory is obtained. The analysis of this scale will not be affected by the scale effect.