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Lighting with LEDs with a uniform temperature distribution

© corepics - Fotolia.com

© corepics - Fotolia.com

At a world renown German research institute, LED-lighting is used to simulate the sun during experiments on plant and animal growth. The thermal design software predicts temperature distribution of cold panel mounted LEDs.

Customer Requirements

LED arrays will replace existing lighting fixtures in greenhouse experiments. Significant heat is generated by each lighting system and must be dissipated in this case by a 7ft x 2ft cold plate attached to it.

Our solution

Because temperature influences the wavelength emitted by the LEDs, each cold plate has to provide a uniform temperature distribution across its surface. To design the cold plates, the lighting controls manufacturer, a global leader in LED lighting and power solutions, contracted with our thermal consulting experts.

Coolit predicts temperature distribution of cold panel mounted LEDs.

Forced water cooling was selected as a simple, cost-effective, low-weight approach with the coolant tubing looped back and forth along the length of the cooling plate. Our Thermal design experts analyzed the impact of various design parameters, such as the number of tubing loops, pitch, flow velocity, and interface material used between the PCBs and the cold plate. When the Coolit optimized design was tested, it verified the prediction accuracy and satisfied all the cooling requirements. 

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