CPU热管散热器的实验研究

为探究热管散热器的散热性能,选取使用热管数量分别为两根、四根、六根的三种重力式热管散热器为研究对象进行实验。这三种热管散热器热管与翅片的结构型式相同,翅化比均接近13.5,因此具有较高的可比性。在风速为1.7 m/s的工况下,测得了两热管散热器最大散热功率为78 W,总热阻为0.57 K/W;四热管散热器最大散热功率为116 W,总热阻为0.36 K/W;六热管散热器最大散热功率为240 W,总热阻为0.19 K/W。六管散热器蒸发端与冷凝端均温性较好,三种热管散热器达到热平衡的时间约为17 min。

Experimental research on the heat pipe sink for CPU

In order to explore the heat dissipation performance of heat pipe radiators,three types of gravity heat pipe radiators with different heat pipe numbers were selected as the research objects.Under the condition of wind speed of 1.7 m/s,the heat sinks were measured.These three types of heat pipe radiators had the same structure,and the wing ratios were close to each other at about 13.5,so they had high comparability.The maximum heat dissipation of the two-tube,four-tube and six-tube heat sink was separately 78 W,116 W and 240 W.The total thermal resistance was separately 0.57 K/W,0.36 K/W and 0.19 K/W.The temperature difference between the evaporation and the condensation of the six-tube radiator was best among the three types.The heat balance time of the three heat pipe sinks was about 17 minutes.