Study on the heat sink structure and heat transfer effect of liquid cooling system for high power LEDs

被引：0

作者：

Tian, Lixin ^{[1
]}

Wen, Shangsheng ^{[1
,2
]}

Huang, Weiming ^{[1
]}

Xia, Yunyun ^{[1
]}

Yao, Rihui ^{[1
,2
]}

机构：

[1] Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, Guangdong

[2] State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, Guangdong

来源：

Guangxue Xuebao/Acta Optica Sinica | 2015年 / 35卷 / 03期

关键词：

Field synergy; Heat sink; Heat transfer enhancement; Junction temperature; Optical devices; principle; Thermal resistance;

D O I：

10.3788/AOS201535.0323003

中图分类号：

学科分类号：

摘要：

To design the heat sink of liquid cooling system effectively and improve the comprehensive performance of heat transfer for high power LEDs, the LED maximum temperature and thermal resistance of three types of heat sinks are numerically investigated. The mechanism of heat transfer is analyzed by using the field synergy principle, and the variation of the Nusselt number and friction factor are examined with Reynolds number. And using the thermal enhancement factor to express the comprehensive performance of heat transfer between the heat transfer performance and flow resistance. The results show that the LED maximum temperature and thermal resistance using the rectangular fin with the inclined angle of 30° is lowest, the heat transfer enhancement is highest, and rhombic fin is followed, vertical parallel fin is worst. The rectangular fin with the inclined angle of 30° and rhombic fin have the higher flow resistance when they have the higher heat transfer performance, because of the oblique angle. Considering the heat transfer performance and flow resistance, rhombic fin has the highest comprehensive performance of heat transfer. ©, 2015, Chinese Optical Society. All right reserved.

引用

页数：9

共 22 条

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