提出了一种笔记本电脑散热用新型平板热管，其具有散热效率高、力学强度高、重量轻、成本低、工艺简单等优点．在自然对流冷却条件下，对平板热管和相同尺寸的实心铝板的传热性能进行了实验研究．分析了平板热管的启动特性、均温特性以及加热功率、倾角对其传热性能的影响．实验结果表明，与实心铝板相比平板热管的传热性能更优．当加热功率为17w时，平板热管散热器的总热阻为1．72℃／w，冷凝面的最高温度达到49．7℃，而热源温度为55．3℃，可以满足目前上网笔记本电脑冷却的要求．%A novel flat heat pipe for notebook PC cooling is put forward, which has the features of high efficiency of heat dissipation, high mechanical strength, light weight, low cost, convenient manufacture. The experimental investigation on thermal performance of the flat heat pipe in natural convection cooling is made. The startup performance and temperature uniformity of the flat heat pipe and the effects of heat load and tilt angle on the thermal characteristics are also analyzed. For performance comparison, the experimental investigation is also carried out on an aluminum block of the same dimensions. It is found that compared with the aluminum block, the flat heat pipe is superior in heat transfer performance. When the heat load is 17 W, the total thermal resistance of the flat heat pipe radiator is 1.72 ℃/W, the maximum temperature of condensing surface is 49.7℃, and the heat source temperature is 55.3 ℃, which meets the demand of heat dissipation for notebook PC.
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