摘要
针对大功率LED路灯的热管散热器散热性能进行了实验和数值研究。首先,利用红外测温技术,对120W大功率LED路灯灯壳及热管散热器表面温度进行了测量,测试结果表明,热管散热器温度分布较均匀,平均温度在38℃左右;热管散热技术是大功率LED路灯散热问题的有效解决办法。其次,建立相应的三维数学模型并求得数值解,数值解与实验结果符合较好,证明数学模型的正确性。最后根据数值计算结果,讨论了优化热管散热器散热性能的思路及方法。
Heat pipe radiator was experimental and numerical studied to solve the cooling problem of high power LEDs for street lamp. Firstly,the surface temperature of the lamp housing was measured by IR sensor then surface temperature of the heat pipe radiator was also measured. Experimental results show that the average temperature of the heat pipe radiator is about 38 ℃ and the distribution is even. So heat pipe radiator is applicable for high power LED street lamp and is one of the methods for solving the heat dissipating problem. Secondly,a mathematical model was built to simulate the distribution characteristics of the flow and temperature fields. Simulation results agree well with the experimental results and therefore the model is proved to be reliable. The results also suggest that there are several disadvantages of the heat dissipation fins. Optimizing designs and methods are discussed and put forward finally.
出处
《半导体光电》
CAS
CSCD
北大核心
2010年第3期459-463,467,共6页
Semiconductor Optoelectronics
基金
国家自然科学基金重点项目(50736005)
国家重点基础研究发展计划项目(2007CB206902)
关键词
电子器件冷却
大功率发光二极管
红外测温
数值模拟
electronics cooling
high power LED
heat dissipation
infrared study
numerical simulation
