Simulation of a high-power LED lamp for the evaluation and design of heat dissipation mechanisms

Huang, De-Shau; Liao, Yi-Sheng; Kuo, Heng-Jen; Kuo, Fang-Jui; Lin, Ming-Tzer

doi:10.1007/s00542-015-2580-x

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Numerous studies have focused on heat sinks to cool high-power LED lamps [8][9][10][11][12][13][14][15]. Yu et al [8,9] compared the effects of the number of fins, fin length, fin height, and heat flux on the thermal resistance and the heat transfer coefficient only in plate-fin heat sinks.…”

Section: Introductionmentioning

confidence: 99%

“…The staggered pin-fin radial heat sink has been identified as the optimal configuration, demonstrating improved thermal performance by up to 10% while maintaining the same mass or reducing the mass by up to 12% for a given thermal resistance. Huang et al [14] developed a simulation method for LED lamps in order to investigate thermal and fluid fields inside a lamp. The chip temperature and air velocity inside the shell of the LED lamp were shown to decrease with an increase in the number of fins.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of different cooling fin types for countering LED luminaires' heat problems

Karatekin¹,

Kökkaya²

2018

Turk J Elec Eng & Comp Sci

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A significant problem with high-power LED luminaires is heat. Aluminum heat sinks have been extensively used as a solution. The most common method for heat sinks that increases surface area uses fins. In the present study, pin-and plate-fins were compared and it was observed that, in equal surface areas, better cooling was achieved by pin-fins. Thus, the study's concentration narrowed to pin-fins and the results of different pin-fins were compared. Simulations of a sample group were conducted by using different numbers of fins, and the number of fins giving the lowest Tmax value (the highest junction point temperature) was accepted to be optimum for each group; then the optimum values were compared among the different groups. Keeping the base width of fins constant, optimum values were obtained for the same number of fins when the fin height was changed. However, keeping fin height constant, surface areas of optimum values and measured Tmax values were very close to one another other, even if the base width of fins was changed. The results have practical significance in designing high-power LED luminaires.

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