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中文摘要：
为解决大功率LED散热问题,构造了一种一体化并行多通道大功率LED回路热管散热器。利用水作为工质,在不同加热功率、不同倾斜角以及不同充液比条件下对该新结构热管散热器的热性能进行了研究。结果表明,这种新结构热管散热器不仅能使散热器上下底板处于均温状态,而且当芯片加热功率达到200 W时,芯片加热面中心最高温度不超过71.8℃;倾斜角度对热管换热性能影响不大;在一定加热功率范围内,新结构热管散热器的热阻随加热功率的增大而减小,当芯片加热功率达到240 W时,热阻最小,最小可达0.19K/W。构造的一体化并行多通道大功率LED回路热管散热器具有很好的传热性能,并提高了承载高热流密度的能力。
英文摘要：
An integrated loop heat pipe radiator with parallel multi-channel was fabricated to solve the problem of high power LED heat dissipation. Experiments were conducted to study the effects of heating power,inclination angle and filling ratio of liquid on the heat performance of this new structure radiator, and water was used as working fluid. The results show that the new structure loop heat pipe radiator makes the top surface and bottom surface have a uniform temperature, and when the heating power of the chip is 200 W, the maximum temperature of heating surface center does not exceed 71.8 ℃. Inclination angle almost has no effect on the performance of the new structure loop heat pipe. With the heating power increasing in a certain range, the new structure loop heat pipe radiator＇s thermal resistance is decreasing,and when the heating power of the chip is 240 W,the thermal resistance has the smallest value of 0. 19 K/W. Experimental results also show that this new structure integrated loop heat pipe radiator with parallel multi-channel for high power LED not only has good heat transfer performance,but also enhances the ability to carry high heat flux.
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