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http://dx.doi.org/10.4313/JKEM.2015.28.2.137

Comparative Analysis of Thermal Dissipation Properties to Heat Sink of Thermal Conductive Polymer and Aluminum Material  

Choi, Doo-Ho (Department of Information & Communication Engineering, WonKwang University)
Choi, Won-Ho (Department of Information & Communication Engineering, WonKwang University)
Jo, Ju-Ung (Department of Information & Communication Engineering, WonKwang University)
Park, Dae-Hee (Department of Information & Communication Engineering, WonKwang University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.2, 2015 , pp. 137-141 More about this Journal
Abstract
The purpose of this study is examining thermal dissipation materials for the lighting and radiate efficiency improvement of 8W LED and confirming the properness of the thermal dissipation materials for LED heat sink. Solid Works flow simulation on 8W class COB was done based on the material characteristics of thermal conductive polymer materials. According to the result of simulation, Al had better thermal dissipation performance than PET. Highest temperature was $7.6^{\circ}C$ higher while lowest temperature was $7.8^{\circ}C$ lower. The test on the heat sinks made by the materials, highest temperature was $4.1^{\circ}C$ higher and lowest temperature was $3.9^{\circ}C$ lower. It is possible to confirm that Al heat sink has better thermal dissipation efficiency because it has better dispersion of heat generated at junction temperature and less heat cohesion. The weight of PET heat sink was reduced than Al heat sink by 46.9% by the density difference between Al and PET. In conclusion, thermal dissipation performance of thermal conductive polymer is lower than Al material however, it is possible to lighting heat sink because thermal conductive polymer has better formability, has lower specific weight and enables various design options.
Keywords
LED; Thermal conductivity; Design heatsink; Thermally conductive polymer; Polyethylene terephthalate;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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