The Application of Heat Pipe Heat Sink for High Power LED Lamps

Abstract:

LED has been regarded as the next generation lighting source. As for high power LED lamps, heat accumulation will cause a series of problems. Therefore, thermal management is very important for designing a high power LED lamp. Three types of heat sinks are designed by using the finite element analysis (FEA) method for an 180W high power LED lamp. Then the optimized heat sinks are developed and experiments are performed to demonstrate the simulated results. At the same time, the thermal performances with different working angles are investigated experimentally. The heat sink with heat pipe has a better heat dissipation performance than the conventional heat sink under the same input power. The working angles of the lamps greatly influence the thermal performance of each heat sink. For the same heat sink, the temperature varies with different install directions and working angles. Finally, the heat sink with the best thermal performance is recommended. The results have practical significance in designing high power LED lamps.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 2713-2716
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.2713
• Online since: August 2014
• Authors: Xin Rui Ding*, Yu Ji Li, Zong Tao Li, Yong Tang, Bin Hai Yu, Dong Yuan
• Keywords: Heat Pipe, Heat Sink, Light Emitting Diode (LED), Working Angles

References

[1] E.F. Schubert, J.K. Kim, H. Luo, J. Xi, Solid-state lighting—a benevolent technology, Reports on Progress in Physics, 69 (2006) 3069-3099.

DOI: 10.1088/0034-4885/69/12/r01

[2] Y. Gu, Narendran, Nadarajah, A noncontact method for determining junction temperature of phosphor-converted white LEDs, in: Optical Science and Technology, SPIE's 48th Annual Meeting, International Society for Optics and Photonics, 2004, pp.107-114.

DOI: 10.1117/12.509751

[3] X. Luo, S. Liu, A microjet array cooling system for thermal management of high-brightness LEDs, Advanced Packaging, IEEE Transactions on, 30 (2007) 475-484.

DOI: 10.1109/tadvp.2007.898522

[4] Y. Deng, J. Liu, A liquid metal cooling system for the thermal management of high power LEDs, International Communications in Heat and Mass Transfer, 37 (2010) 788-791.

DOI: 10.1016/j.icheatmasstransfer.2010.04.011

[5] X. Luo, W. Xiong, T. Cheng, S. Liu, Design and optimization of horizontally-located plate fin heat sink for high power LED street lamps, in: Electronic Components and Technology Conference, 2009. ECTC 2009. 59th, IEEE, 2009, pp.854-859.

DOI: 10.1109/ectc.2009.5074112

[6] K. Ding, S. Feng, C. Guo, G. Zhang, C. Gao, Structure optimization of heat sink for high power LED street lamp, in: Electronics and Optoelectronics (ICEOE), 2011 International Conference on, Vol. 2, IEEE, 2011, pp. V2-75-V72-78.

DOI: 10.1109/iceoe.2011.6013179

[7] A. Bar-Cohen, W. Rohsenow, Thermally optimum spacing of vertical, natural convection cooled, parallel plates, Journal of Heat Transfer, 106 (1984) 116-123.

DOI: 10.1115/1.3246622