Experimental study on the thermal performance of straight and oblique finned, polymer heat sinks

Timbs, K., Khatamifar, M., Lin, W., and Antunes, E. (2020) Experimental study on the thermal performance of straight and oblique finned, polymer heat sinks. In: Proceedings of the 22nd Australasian Fluid Mechanics Conference. From: AFMC2020: 22nd Australasian Fluid Mechanics Conference, 7-10 December 2020, Brisbane, QLD, Australia.

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Abstract

Heat sink can effectively dissipate heat in a range of thermal applications for improved performance and reliability. Thermally conductive polymer composites show great promise in solving the overheating issue in electronic devices. This experimental study investigates the thermal performance and the flow characteristics of straight and oblique finned heat sinks made of thermally conductive polymer composites under forced convection conditions over 7450 <= Re <= 36000, where Re is the Reynolds number. The heat sinks used were 3D printed using Ice9 Flex (carbon filled polymer, from TCPoly), copper filled filament (polylactic acid with 80% copper particles) and bronze filled filament (polylactic acid with 80% bronze particles), respectively. Oblique fins were found to effectively reduce the thermal resistance of heat sinks, increase the convective heat transfer and the inner-fin velocity which results in lower pressure drop, in comparison to straight finned heat sinks. The carbon-filled polymer (Ice9 Flex) was shown to have much superior thermal dissipation characteristics compared to metal filled filaments.

Item ID: 65410
Item Type: Conference Item (Presentation)
ISBN: 978-1-74272-341-9
Keywords: thermally conductive polymer; heat sink; forced convection
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Copyright Information: Each work is available to users through UQeSpace pursuant to a Creative Commons Attribution-NonCommercial CC BY-NC 4.0 License.
Date Deposited: 06 Jan 2021 03:19
FoR Codes: 40 ENGINEERING > 4012 Fluid mechanics and thermal engineering > 401205 Experimental methods in fluid flow, heat and mass transfer @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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