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本文设计并制作了一种具有深微槽道结构的铜-水平板热管,系统地研究了放置方式对其传热性能的影响。实验测试了不同热流密度、不同倾角下热管正常工作时的稳态温度分布和热阻。结果表明,热管热阻随倾斜角度单调增大。这是因为随着倾角的增加,重力与工质回流方向不一致,重力阻碍了工质的回流起到了作用,所以热管的均热性能下降,热阻增大。水平放置时,热管表现出最佳的工作性能和最小的热阻。
In this paper, we designed and fabricated a copper-to-water heat pipe with deep and micro-channel structure, and systematically studied the influence of placement on its heat transfer performance. The steady-state temperature distribution and thermal resistance of the heat pipe under normal operation with different heat flux density and different inclination angles were experimentally tested. The results show that the thermal resistance of the heat pipe increases monotonically with the inclination angle. This is because as the inclination increases, the gravity and the working fluid return direction are inconsistent, the gravity impedes the backflow of the working substance has played a role, so the heat pipe’s thermal performance decreases, the thermal resistance increases. When placed horizontally, the heat pipe shows the best performance and the lowest thermal resistance.