An experimental model of the evaporative cooling system of a single powerful LED
Kutateladze Institute of Thermophysics SB RAS, 630090, 1 Lavrentyev Ave., Novosibirsk, Russia
Novosibirsk state University, 630090, 2 Pirogova Str., Novosibirsk, Russia
Published online: 25 October 2017
An experimental model of the evaporative cooling system of a single powerful LED with a natural circulation of the coolant capable of removing a heat flux density of more than 1 kW / cm2 is created. It is shown that on the finned surfaces the overheating relative to the saturation temperature in comparison with a smooth surface decreases up to three times for the heater with a diameter of 5 mm. There is up to two times increase in heat transfer coefficient on finned surfaces as compared to the smooth ones. For finned surfaces on the heater with a diameter of 1 mm the surface overheating relative to the saturation temperature decreases in four times. More than three times increase is observed for the heat transfer coefficient on finned surfaces as compared to the smooth ones.
© The authors, published by EDP Sciences, 2017
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