异型平板热管传热性能的实验研究

Effects of bending angle of shaped flat heat pipe on heat transfer performance

由于现实应用中电子元件的物理紧凑性,散热原件需要做出相应的弯曲角度调整。通过实验,定量的分析了充液率为30%、尺寸为500 mm×60 mm×1.5 mm的超薄平板热管在弯折角度为90°、135°和竖直热管的性能差异。研究了在1×10^(-3) Pa真空条件下,加热功率(30~100 W)和风速(2~8 m/s)对平板热管传热性能的影响。实验数据得出,竖直情况下热管的传热性能远高于135°,而90°的传热性能最差。竖直热管的当量导热系数可以达到18.08 kW/(m·K),而90°热管的当量导热系数是8.26 kW/(m·K)。

Due to the physical compactness of electronic components in practical application,the bending angle of the cooling element needs to be adjusted accordingly.A series of experimental studies were carried out to quantitatively analyze the performance differences of the ultra-thin flat heat pipe with size of 500 mm×60 mm×1.5 mm and the fluid filling rate of 30%at 90°,135°bending angles and vertical heat pipe.The effects of heating power inputs(30-100 W)and wind speed(2-8 m/s)on the heat transfer performance of the shaped flat heat pipe in a vacuum of 1×10-3 Pa were studied.The results show that the heat transfer performance of the vertical heat pipe is much better than that at 135°,while it is the worst at 90°.The equivalent thermal conductivity can reach 18.08 kW/(m·K)at vertical heat pipe while that of 90°heat pipe is 8.26 kW/(m·K).