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本文在水热管试验研究的基础上,提出低热阻、高传热率的最佳吸液芯结构,论述热管蒸发区内的传热机理。对于金属流体和低热流密度下的非金属流体,蒸发区内的传热主要靠通过吸液芯-液体组合体的导热;对于高热流密度下的非金属流体,蒸发区内可能出现核沸腾,这时妥善设计吸液芯,可以延缓因核沸腾而过早地出现干涸的现象。试验表明,1.5米长的重力辅助水热管,倾角3°下最大传热率竟比水平时增加6倍。最后,介绍水热管在晶闸管散热和余热回收中的工程应用。
Based on the experimental study of the hydrothermal tube, this paper proposes the best wick structure with low thermal resistance and high heat transfer rate, and discusses the heat transfer mechanism in the heat pipe evaporation zone. For metal fluids and non-metallic fluids at low heat flux, the heat transfer in the evaporation zone relies primarily on thermal conduction through the wick-liquid combination; for non-metallic fluids at high heat flux density, nuclear boiling may occur in the evaporation zone, At this time properly designed wick, can delay due to nuclear boiling and premature emergence of the phenomenon. Experiments show that 1.5 meters long gravity-assisted water heating pipe, the maximum heat transfer rate of 3 ° under the dip actually increased by 6 times. Finally, introduce the engineering application of hydrothermal tube in thyristor heat and waste heat recovery.