IMPROVEMENT OF HEAT DISSIPATION PERFORMANCE OF COAXIAL LIGHTING DEVICE

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2023 Vol.28, Issue 4 Preview Page Next Page

IMPROVEMENT OF HEAT DISSIPATION PERFORMANCE OF COAXIAL LIGHTING DEVICE 동축낙사조명 시스템의 방열성능 개선: 유경미,¹ 조성진,¹ 김완진,^*2 이상욱^*3
K.M. Yu,¹ S.J. Cho,¹ W.C. Kim^*2 and S.W. Lee^*3; ¹원광대학교 기계공학과 대학원, ²한밭대학교 기계소재융합시스템공학과, ³원광대학교 기계설계공학과

¹Dept. of Mechanical Engineering, Wonkwang Univ.
²Dept. of Mechanical-Material Convergence System Engineering, Hanbat National Univ.
³Dept. of Mechanical Design Engineering, Wonkwang Univ.

31 December 2023. pp. 37-44

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Abstract

This study utilized computational fluid dynamics to optimize LED heat dissipation in coaxial lighting device. It explored various factors such as fan rotation direction(blow-in and suction), fin dimension, heat conduction path, and exhaust outlet positioning. Results revealed that fan rotating direction(blow-in) increases the heat transfer coefficient, showing higher values near the fan. Regarding fin thickness in pre-determined domain size, thicker fins were found to decrease heat transfer rate and coefficient. To tackle flow stagnation in vertical cooling fin, horizontal fin cuts were considered. The placement of the exhaust outlet had a significant impact on heat dissipation performance, with the bottom position being the most efficient. In summary, this research contributes to improve the efficient of heat dissipation system and thermal management of coaxial lighting device using LED.

Keywords

전산유체역학(CFD)

발광다이오드(LED)

히트싱크(Heat Sink)

방열(Heat Dissipation)

동축낙사(Coaxial light)

References

2012, Cho, Y.-T., "Heat Radiation of Multichip 10W LED Light Using Thermoelectric Module(TEM)," Journal of the Korean Society of Manufacturing Technology Engineers, 21(1), pp.46-50.https://doi.org/10.7735/ksmte.2012.21.1.046
2010, Hwang, S-H., Park, S.-J. and Lee, Y.-L., "A Study of Optimal Thermal Design for a 10W LED lamp," Journal of the Korea Academia-Industrial cooperation Society, 11(7), pp.2317-2322.https://doi.org/10.5762/KAIS.2010.11.7.2317
2012, Choi, B.-H. and Kim, C.O., "A Study on the Numerical Analysis of Heat sink for Radiant Heat of Automotive LED Head Lamp," Journal of the Korea Academia-Industrial cooperation Society, 13(10), pp.4398-4404.https://doi.org/10.5762/KAIS.2012.13.10.4398
2014, Kwon, J.-H., Lee, J.-M., Kim, H.-J., Kang, E.-Y. and Park, K.-J., "Thermal Characteristics of the design on Residential 13.5W COB LED Down Light Heat Sink," Journal of Korea Institute of Information, Electronics, and Communication Technology, 7(1), pp.20-25.https://doi.org/10.17661/jkiiect.2014.7.1.020
2009, Ko, M., Lee, J., Oh, S., Cho, H. and Seo, T., "Cooling Performance of LED Head Lamp with Heat Sink and Cooling Fan," Transactions of the Korean Society of Mechanical Engineers - B, 33(12), pp.947-951.https://doi.org/10.3795/KSME-B.2009.33.12.947
2013, Jung, T.S. and Kang, H.K., "Investigation of Natural Convective Heat Flow Characteristics of Heat Sink," Transactions of the Korean Society of Mechanical Engineers - B, 37(1), pp.27-33.https://doi.org/10.3795/KSME-B.2013.37.1.027
2008, Jianzheng, H., Yang, L. and Shin, M.W., "Electrical, optical and thermal degradation of high power GaN/InGaN light-emitting diodes," Journal of Physics D: Applied Physics 41.3, 035107.https://doi.org/10.1088/0022-3727/41/3/035107
2017, Cengel, Y.A., Heat and Mass Transfer: Fundamentals and Applications, 홍릉과학출판사.

Information

Publisher :Korean Society for Computational Fluids Engineering
Publisher(Ko) :한국전산유체공학회
Journal Title :Journal of Computational Fluids Engineering
Journal Title(Ko) :한국전산유체공학회지
Volume : 28
No :4
Pages :37-44

[1] 2012, Cho, Y.-T., "Heat Radiation of Multichip 10W LED Light Using Thermoelectric Module(TEM)," Journal of the Korean Society of Manufacturing Technology Engineers, 21(1), pp.46-50.https://doi.org/10.7735/ksmte.2012.21.1.046

[2] 2010, Hwang, S-H., Park, S.-J. and Lee, Y.-L., "A Study of Optimal Thermal Design for a 10W LED lamp," Journal of the Korea Academia-Industrial cooperation Society, 11(7), pp.2317-2322.https://doi.org/10.5762/KAIS.2010.11.7.2317

[3] 2012, Choi, B.-H. and Kim, C.O., "A Study on the Numerical Analysis of Heat sink for Radiant Heat of Automotive LED Head Lamp," Journal of the Korea Academia-Industrial cooperation Society, 13(10), pp.4398-4404.https://doi.org/10.5762/KAIS.2012.13.10.4398

[4] 2014, Kwon, J.-H., Lee, J.-M., Kim, H.-J., Kang, E.-Y. and Park, K.-J., "Thermal Characteristics of the design on Residential 13.5W COB LED Down Light Heat Sink," Journal of Korea Institute of Information, Electronics, and Communication Technology, 7(1), pp.20-25.https://doi.org/10.17661/jkiiect.2014.7.1.020

[5] 2009, Ko, M., Lee, J., Oh, S., Cho, H. and Seo, T., "Cooling Performance of LED Head Lamp with Heat Sink and Cooling Fan," Transactions of the Korean Society of Mechanical Engineers - B, 33(12), pp.947-951.https://doi.org/10.3795/KSME-B.2009.33.12.947

[6] 2013, Jung, T.S. and Kang, H.K., "Investigation of Natural Convective Heat Flow Characteristics of Heat Sink," Transactions of the Korean Society of Mechanical Engineers - B, 37(1), pp.27-33.https://doi.org/10.3795/KSME-B.2013.37.1.027

[7] 2008, Jianzheng, H., Yang, L. and Shin, M.W., "Electrical, optical and thermal degradation of high power GaN/InGaN light-emitting diodes," Journal of Physics D: Applied Physics 41.3, 035107.https://doi.org/10.1088/0022-3727/41/3/035107

[8] 2017, Cengel, Y.A., Heat and Mass Transfer: Fundamentals and Applications, 홍릉과학출판사.

Journal of Computational Fluids Engineering ISSN:1598-6071(Print) 3022-6252(Online) 한국전산유체공학회지

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