Thermal performance of a PCB channel heat sink for LED light bulbs

被引：16
作者：
Jang, Daeseok [1 ]
Park, Seung-Jae [1 ]
Lee, Kwan-Soo [1 ]
机构：
[1] Hanyang Univ, Sch Mech Engn, Seoul 133791, South Korea
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2015年 / 89卷
关键词：
LED bulb; Light-emitting diode (LED) lighting cooling; Printed circuit board (PCB) heat sink; Natural convection; CONVECTION; RADIATION;
D O I：
10.1016/j.ijheatmasstransfer.2015.06.027
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, the thermal performance of the printed circuit board (PCB) as a heat sink for the light-emitting diode (LED) bulb is analyzed. Cooling air is drawn through the bottom inlet of a case and exchanges heat from a vertically aligned PCB acting as a heat sink fin. The air then exits through a top outlet. Cooling performance is improved by arranging parallel PCBs to form a channel. Heat transfer is optimized by balancing cooling airflow rates on external and internal PCB surfaces, thereby reducing thermal resistance by 30% compared to previous designs. Cooling performance according to installation angle is investigated. The orientation effect on this channel design is determined to be 10% less than that of the reference design. Finally, the effect of PCB channel cooling performance on the LED bulb's life span is analyzed and shown to be 40% longer than that of the existing geometry. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1290 / 1296
页数：7
相关论文
共 13 条
[1]  
[Anonymous], 2011, ANSYS FLUENT 13 0 US
[2]  
ANSI, C78202003 ANSI
[3]  
Illuminating Engineering Society, 2008, LM8008 IES
[4]   Correlation of cross-cut cylindrical heat sink to improve the orientation effect of LED light bulbs [J].
Jang, Daeseok ;
Kim, Dong Rip ;
Lee, Kwan-Soo .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 84 :821-826
[5]   The orientation effect for cylindrical heat sinks with application to LED light bulbs [J].
Jang, Daeseok ;
Park, Seung-Jae ;
Yook, Se-Jin ;
Lee, Kwan-Soo .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2014, 71 :496-502
[6]   Optimum design of a radial heat sink with a fin-height profile for high-power LED lighting applications [J].
Jang, Daeseok ;
Yook, Se-Jin ;
Lee, Kwan-Soo .
APPLIED ENERGY, 2014, 116 :260-268
[7]   Multidisciplinary optimization of a pin-fin radial heat sink for LED lighting applications [J].
Jang, Daeseok ;
Yu, Seung-Hwan ;
Lee, Kwan-Soo .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2012, 55 (04) :515-521
[8]   Combined convection and radiation heat transfer of the radially finned heat sink with a built-in motor fan and multiple vertical passages [J].
Jeng, Tzer-Ming .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 80 :411-423
[9]  
Jiri J., 2012, RADIOENGINEERING, V21, P225
[10]  
Kulha P., 12 INT C REN EN POW
12