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dc.contributor.authorBabar, Hamza
dc.contributor.authorWu, Hongwei
dc.contributor.authorZhang, Wenbin
dc.date.accessioned2023-09-29T16:00:00Z
dc.date.available2023-09-29T16:00:00Z
dc.date.issued2023-12-01
dc.identifier.citationBabar , H , Wu , H & Zhang , W 2023 , ' Investigating the Performance of Conventional and Hydrophobic Surface Heat Sink in Managing Thermal Challenges of High Heat Generating Components ' , International Journal of Heat and Mass Transfer , vol. 216 , 124604 , pp. 1-17 . https://doi.org/10.1016/j.ijheatmasstransfer.2023.124604
dc.identifier.issn0017-9310
dc.identifier.otherORCID: /0000-0002-3053-2388/work/143285922
dc.identifier.urihttp://hdl.handle.net/2299/26793
dc.description© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license, http://creativecommons.org/licenses/by/4.0/
dc.description.abstractIn the pursuit of optimizing heat dissipation and improving performance in electronic devices, liquid-cooled heat sinks have garnered significant interest due to their potential to improve heat transfer efficiency. Presented study set out to assess the effectiveness of straight channel heat sinks as a thermal solution for high heat generating electronics components, while also investigating the impact of applying a hydrophobic coating on their performance. A series of tests were conducted at different heating powers (50W-250 W) and flow rates (200–950 ml/min), while also considering different orientations and directions of flow. The investigation focused on analysing critical aspects such as heat transfer performance, wall temperature variations, thermal resistance, and pressure drop characteristics of straight channel heat sinks with conventional and hydrophobic-coated surfaces. The results showed that the Nusselt number increased with higher Reynolds numbers and heating powers, indicating improved heat transfer efficiency. However, the hydrophobic coating on the heat sink surface led to a reduction in the Nusselt number due to the formation and retention of bubbles, hindering heat transfer. The maximum average reduction of 20.85% in Nusselt number was noticed at 100 W for the vertically positioned hydrophobic-coated heat sink with downward flow compared to conventional surface (CS) heat sink. Additionally, the findings revealed that pressure drop is influenced by Reynolds number and the presence of bubbles, with gravity playing a role in reducing pressure drop in certain orientations. A hydrophobic coating shows a small decrease in pressure drop, but bubble formation limits its effectiveness to some extent. Comparisons also indicated that the highest average decrease in pressure drop about 11.92% was observed for the same configuration, vertically positioned hydrophobic heat sink with downward flow, at 50 W. Moreover, the study's findings have broader implications beyond electronics. Heat sinks are widely employed in various industries, including automotive, aerospace, renewable energy systems, and industrial processes.en
dc.format.extent17
dc.format.extent12250099
dc.language.isoeng
dc.relation.ispartofInternational Journal of Heat and Mass Transfer
dc.subjectElectronics
dc.subjectHeat sink
dc.subjectHydrophobic surface
dc.subjectLiquid-cooling
dc.subjectThermal management
dc.subjectCondensed Matter Physics
dc.subjectMechanical Engineering
dc.subjectFluid Flow and Transfer Processes
dc.titleInvestigating the Performance of Conventional and Hydrophobic Surface Heat Sink in Managing Thermal Challenges of High Heat Generating Componentsen
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionCentre for Climate Change Research (C3R)
dc.contributor.institutionCentre for Future Societies Research
dc.contributor.institutionEnergy and Sustainable Design Research Group
dc.contributor.institutionDepartment of Engineering and Technology
dc.contributor.institutionECS Engineering and Technology VLs
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85168449228&partnerID=8YFLogxK
rioxxterms.versionofrecord10.1016/j.ijheatmasstransfer.2023.124604
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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