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A Study on Thermal Performance of an Impinging Cooling Module for High Power LEDs  

Lee, Dong Myung (Graduate School, Department of Mechanical Engineering, Kumoh National Institute of Technology)
Park, Sang Hee (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Kim, Dongjoo (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Kim, Kyoungjin (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Semiconductor & Display Technology / v.11, no.1, 2012 , pp. 13-19 More about this Journal
Abstract
Thermal performance of an impinging cooling module for 150 W class high power LEDs have been investigated numerically and experimentally. Parametric studies were performed to compare the effect of several design parameters such as nozzle number, nozzle spacing, coolant flow rate, and impinging distance. The experiments were also carried out in order to validate the numerical results and the comparison between the experimental and numerical results showed good agreement. It is found that the overall thermal resistance of impinging cooling module strongly depends on the nozzle number, nozzle spacing, flow rate, and impinging distance. This results showed the optimized operating condition when number of nozzles is 25, nozzles spacing is 4mm, flow rate is 2.70 lpm, distance between nozzles and impinging surface is 2 mm.
Keywords
Light Emitting Diode(LED); Impinging Cooling Module; Jet Nozzle; Overall Thermal Resistance; Thermal Performance;
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