大功率LED液冷热沉结构与换热效果研究

被引：13

作者：

田立新 ^{[1
]}

文尚胜 ^{[1
,2
]}

黄伟明 ^{[1
]}

夏云云 ^{[1
]}

姚日晖 ^{[1
,2
]}

机构：

[1] 华南理工大学高分子光电材料与器件研究所

[2] 华南理工大学发光材料与器件国家重点实验室

来源：

光学学报 | 2015年 / 35卷 / 03期

基金：

广州市科技计划项目;

关键词：

光学器件; 结温; 热阻; 强化换热; 场协同原理; 热沉;

D O I：

暂无

中图分类号：

TN312.8 [];

学科分类号：

0803 ;

摘要：

为了更好设计LED液冷换热热沉,提高大功率LED热沉的综合换热性能,模拟计算了三种结构热沉的LED芯片最高结温和器件热阻,运用场协同原理分析了不同LED热沉结构的换热原理,以及努塞尔数和摩擦因子随雷诺数的变化规律;并用强化传热因子来表述换热能力和流动阻力的综合换热效果。结果表明,运用30°角矩形翅片的LED结温和器件热阻最低,换热能力最好;菱形翅片次之,垂直平行翅片最差。30°角矩形翅片和菱形翅片由于倾斜角的存在,在增加换热能力的同时也增加了流动阻力;综合分析换热能力和流动阻力,菱形翅片的综合换热性能最好。

引用

页码：337 / 345

页数：9

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