Engineering Mechanics

International Conference

Proceedings Vol. 27/28 (2022)


May 9 – 12, 2022, Milovy, Czech Republic
Editors: Cyril Fischer and Jiří Náprstek

Copyright © 2022 Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prague

ISBN 978-80-86246-48-2 (printed)
ISBN 978-80-86246-51-2 (electronic)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Liquid cooling of LED car headlamps using polymeric hollow fibers
Mráz K., Kroulíková T., Resl O.
pages 265 - 268, full text

Thermal management of high-power Light Emitting Diodes (LED) car headlamp is important because high temperatures decrease life span of LEDs significantly. Polymeric hollow fibers of a small diameter (approx. 1 mm) were used to create a compact liquid cooling systems of LED car headlights. The cooling performance of liquid cooling system installed on the headlight Printed Circuit Board (PCB) of Skoda Octavia and Skoda Enyaq was tested. Results of the testing show that the proposed plastic radiators ensure efficient and uniform cooling of the PCBs and keep the LEDs operation temperature much below the recommended 110°C. As the heat generation is relatively small for liquid cooling (tens of watts), there is only 3-10 l/hour flow rate of coolant needed, allowing to operate the plastic radiator with low velocity and pressure drops (below 1kPa).

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Ownership of copyright in original research articles remains with the Authors, and provided that, when reproducing parts of the contribution, the Authors acknowledge and/or reference the Proceedings, the Authors do not need to seek permission for re-use of their material.

All papers were reviewed by members of the scientific committee.

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