LAPSE:2023.21974
Published Article
LAPSE:2023.21974
Thermal Assessment of Laminar Flow Liquid Cooling Blocks for LED Circuit Boards Used in Automotive Headlight Assemblies
Muhsin Kilic, Mehmet Aktas, Gokhan Sevilgen
March 23, 2023
This research work presents a comparative thermal performance assessment of the laminar flow cooling blocks produced for automotive headlight assembly using a high power Light Emitting Diode (LED) chip. A three-dimensional numerical model with conjugate heat transfer in solid and fluid domains was used. Laminar flow was considered in the present analysis. The validation of the numerical model was realized by using the measured data from the test rig. It was observed that substantial temperature variations were occurred around the LED chip owing to volumetric heat generation. The cooling board with lower height performs better thermal performance but higher pressure drop for the same mass flow rates. The cooling board with the finned cover plate performs better thermal performance but results in an increased pressure drop for the same mass flow rates. Increasing the power of the LED results in higher temperature values for the same mass flow rates. The junction temperature is highly dependent on the mass flow rates and LED power. It can be controlled by means of the mass flow rate of the coolant fluid. New Nusselt number correlations are proposed for laminar flow mini-channel liquid cooling block applications.
Keywords
automotive headlight, Computational Fluid Dynamics, finned plate, junction temperature, laminar flow, LED chip, liquid cooling
Suggested Citation
Kilic M, Aktas M, Sevilgen G. Thermal Assessment of Laminar Flow Liquid Cooling Blocks for LED Circuit Boards Used in Automotive Headlight Assemblies. (2023). LAPSE:2023.21974
Author Affiliations
Kilic M: Mechanical Engineering Department, Bursa Uludag University, 16240 Bursa, Turkey [ORCID]
Aktas M: Magneti Marelli Mako Elektrik Sanayi ve Tic. A.S., 16159 Bursa, Turkey [ORCID]
Sevilgen G: Automotive Engineering Department, Bursa Uludag University, 16240 Bursa, Turkey
Journal Name
Energies
Volume
13
Issue
5
Article Number
E1202
Year
2020
Publication Date
2020-03-05
Published Version
ISSN
1996-1073
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Original Submission
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PII: en13051202, Publication Type: Journal Article
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LAPSE:2023.21974
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doi:10.3390/en13051202
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Mar 23, 2023
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