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

Abstract

A signi cant 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 ns. In the present study, pin- and plate- ns were compared and it was observed that, in equal surface areas, better cooling was achieved by pin- ns. Thus, the study's concentration narrowed to pin- ns and the results of different pin- ns were compared. Simulations of a sample group were conducted by using different numbers of ns, and the number of ns giving the lowest T max 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 ns constant, optimum values were obtained for the same number of ns when the n height was changed. However, keeping n height constant, surface areas of optimum values and measured T max values were very close to one another other, even if the base width of ns was changed. The results have practical signi cance in designing high-power LED luminaires