摘要
提出了一种基于螺旋扁管的大功率发光二极管阵列水冷散热结构,并建立了机械模型.从换热设备小型化角度,以最优的换热效果和较低的水流功耗等作为换热器性能评价准则,对不同水速、管壁厚度、螺旋段长度、压扁厚度的螺旋扁管进行仿真分析.在某一换热工况下对螺旋扁管结构尺寸进行了优化,利用有限体积法求解了计算域,结果表明:优化后的螺旋扁管水冷结构具有很好的换热能力;对供电功率为180 W的发光二极管阵列照明系统进行散热,芯片最高温度为57.573 9℃,可为大功率发光二极管照明系统的散热器工程设计提供一定的参考.
A water cooling structure based on twisted tube to high power light emitted diode （LED） is proposed in this paper, and mechanical model is established. In order to get the best effect of heat dissipation in the case of heat transfer equipment minimization, low flow power consumption etc., the heat transfer performance of the twisted tube is investigated under different water velocity, wall thickness, length of the twisted section, and the thickness of the twisted tube cavity. In the operating conditions, the structural dimensions of the twisted tube are optimized, and the finite volume method is used to calculate the computation domain. The results of simulation indicate that the twisted tube system after optimizing has better properties of heat transfer; the heat exchanger is used in 180 W high power LED array luminaries, and the temperature of chips is lower than 57.573 9℃; the model and analysis results can provide a significance reference for the engineering radiator design of high power LED lighting system.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2013年第11期1350-1354,共5页
Acta Photonica Sinica
基金
国家自然科学基金(No.61107039)
河北省自然科学基金(No.F2012203202)资助
