Abstract
In this paper, thermal analysis of the heat dissipation under different heat sink for high-power white Light Emitting Diode (LED) is presented. Junction temperature of LED is elevated as the power of LED increases, which brings up deterioration of light efficiency and other side effects. Heat dissipation is another design concern other than material and illumination efficiency. The purpose of this paper is to investigate the cooling of high-power LED chips and modules for design of heat sinks. Three types of heat sinks are designed for a tandem 12-chip module and an extensive numerical investigation of the heat sink design performance is conducted by Computational Fluid Dynamics software Fluent. The effects of heat sink geometry and adhesive material are also investigated. Design variables are the thickness of sink base, number, thickness and length of fins. The total wetted area is the dominant factor to the junction temperature. The objective of design regarding the junction temperatures around 50°C is easily achieved. However, its effect is limited at high values of these parameters, furthermore an excessive number of fins incurs reverse consequence due to problem of ventilation also waste of material.
Similar content being viewed by others
References
F. M. Steranka, J. Bhat, D. Collins, L. Cook, M. G. Craford, R. Fletcher, N. Gardner, P. Grillot, W. Goetz, M. Keuper, R. Khare, A. Kim, M. Krames, G. Harbers, M. Ludowise, P. S. Martin, M. Misra, G. Mueller, R. Mueller-Mach, S. Rudaz, Y.-C. Shen, D. Steigerwald, S. Stockman, S. Subramanya, T. Trottier, and J. J. Wierer, Physica Status Solidi (a) 194, 380 (2002).
S. Narasimhan, R. Nair, and A. Bar-Cohen, IEEE Trans. on Comp. and Pack. Tech. 26, 136 (2003).
R. L. Linton and D. Agonafer, IEEE Trans. on Comp, Pack. and Manu. Tech. — Part A 18, 517 (1995).
N. Narendran and Y. Gu, J. Display Technol. 1, 167 (2005).
Y. Cheng, G. Xu, D. Zhu, W. Zhu, and L. Luo, IEEE Trans. on Comp. and Packaging Tech. 29, 39 (2006).
Y. Lai and N. Cordero, Proc. EuroSimE, Com, 1, Milan, Italy (2006).
O. S. Ling and K. L. Tan, Thermal Modeling of Light Emitting Diode, Avago Technologies, http://www.digikey.com/us/en/techzone/lighting/resources/articles/thermal-modelingof-high-power-leds.html (2013).
N. Yeh and J. P. Chung, Renewable and Sustainable Energy Reviews 13, 2175 (2009).
K. C. Yung, H. Liem, H. S. Choy, and W. K. Lun, International Communications in Heat and Mass Transfer 37, 1266 (2010).
D. Lu, C. Liu, X. Lang, B. Wang, Z. Li, W. M. Peter Lee, and S. W. Ricky Lee, Pro. of Electronic Components and Technology Conference, p. 667, IEEE CPMT, Lake Buena Vista, FL, USA (2011).
C. Liu, Dong Lu, X. Lang, A. Choi, and W.M. Lee, Pro. of Electronic Material and Packaging Conference, p. 168, IEEE CPMT HK, Hong Kong (2012).
T. Barth and M. Ohlberger, Finite Volume Methods: Foundation and Analysis Encyclopedia of Computational Mechanics, (E. Stein, R. de Borst and T. J. R. Hughes), John Wiley & Sons, NY, USA (2004).
M. P. Liao, C. D. Tu, R. C. Lin, Y. S. Lin, P. C. Liu, and W. S. Hwang, J. Sci. Eng. Technol. 3, 99 (2007).
W. H. Chi, T. L. Chou, C. N. Han, S. Y. Yang, and K. N. Chiang, IEEE Transactions on Components and Packaging Technologies 33, 713 (2010).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, SJ., Hsu, HC., Fu, SL. et al. Numerical simulation of high power LED heat-dissipating system. Electron. Mater. Lett. 10, 497–502 (2014). https://doi.org/10.1007/s13391-014-8003-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13391-014-8003-9