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小型化是毛细泵环适应微小型高功率密度电子设备散热需求的一个发展趋势.对一小型毛细泵环进行实验研究,重点考察了重力场中不同姿态对毛细泵环运行特性的影响以及毛细泵环在高热流密度工作时的控温特性.根据实验结果可得:该小型毛细泵环可实现不同姿态下的迅速起动,并在热载荷递增过程中表现出良好的控温性能,最大传热能力达50 W,最高热流密度达到12.5 W/cm2,能够满足高功率密度电子元器件冷却的需求;当热流密度较低时,该毛细泵环可实现精确控温;而当热流密度较高时,蒸发器壁面温度波动较大,无法实现精确控温.
Miniaturization is a development trend of the capillary ring to meet the demand of heat dissipation of the miniature high power density electronic devices.A small capillary loop is experimentally studied and the influence of different attitude in the gravity field on the operating characteristics of the capillary loop is investigated emphatically, According to the experimental results, it can be seen that the small capillary ring can realize quick start under different attitude and show good temperature control performance in the process of increasing heat load, and the maximum heat transfer Capability of up to 50 W and a maximum heat flux density of 12.5 W / cm2 meet the cooling requirements of high power density electronic components. When the heat flux is low, the capillary ring can achieve precise temperature control. When the heat flux is high , Evaporator wall temperature fluctuations, can not achieve precise temperature control.