摘要
对一种新型平板热管散热器冷却大功率LED芯片阵列进行实验研究。在自然对流冷却条件下,分析了平板热管散热器的启动特性、均温特性以及通电电流、倾角对其传热性能的影响。利用热电转换方法得到LED芯片的结温变化。实验结果表明:平板热管散热器的总热阻在0.3053～0.3425℃/W间,且散热器整体温度分布均匀合理,具有很强的散热能力;LED结温在47.9～59.0℃间,远低于110℃。
A novel flat heat pipe radiator is put forward and the experimental investigation on heat transfer performance of the flat heat pipe radiator for cooling high power LED array is established. The startup performance, temperature uniformity of the flat heat pipe radiator and the effects of the heat load and tilt angle on the thermal characteristics in natural convection are analyzed. An electrical-thermal conver- sion method is used to measure the junction temperature of the high power LED. It is found that the total thermal resistance of the flat heat pipe radiator varies in the range of 0. 305 3℃/W--0. 342 5 ℃/W and it has a reasonable and uniform temperature distribution. The junction temperature of the LED array va- ries in the range of 47. 9 ℃--59. 0℃ and is far lower than 110 ℃.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2010年第4期485-488,共4页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(50876016)
关键词
大功率LED
平板热管散热器
传热性能
结温
high power LED
flat heat pipe radiator
heat transfer performance
junction temperature
