Influence of Ambient Temperature on Radiative and Convective Heat Dissipation Ratio in Polymer Heat Sinks

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dc.contributor.authorKomínek, Jancs
dc.contributor.authorZachar, Martincs
dc.contributor.authorGuzej, Michalcs
dc.contributor.authorBartuli, Erikcs
dc.contributor.authorKotrbáček, Petrcs
dc.coverage.issue14cs
dc.coverage.volume13cs
dc.date.issued2021-06-12cs
dc.description.abstractMiniaturization of electronic devices leads to new heat dissipation challenges and traditional cooling methods need to be replaced by new better ones. Polymer heat sinks may, thanks to their unique properties, replace standardly used heat sink materials in certain applications, especially in applications with high ambient temperature. Polymers natively dispose of high surface emissivity in comparison with glossy metals. This high emissivity allows a larger amount of heat to be dissipated to the ambient with the fourth power of its absolute surface temperature. This paper shows the change in radiative and convective heat transfer from polymer heat sinks used in different ambient temperatures. Furthermore, the observed polymer heat sinks have differently oriented graphite filler caused by their molding process differences, therefore their thermal conductivity anisotropies and overall cooling efficiencies also differ. Furthermore, it is also shown that a high radiative heat transfer leads to minimizing these cooling efficiency differences between these polymer heat sinks of the same geometry. The measurements were conducted at HEATLAB, Brno University of Technology.en
dc.formattextcs
dc.format.extent1-12cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPolymers. 2021, vol. 13, issue 14, p. 1-12.en
dc.identifier.doi10.3390/polym13142286cs
dc.identifier.issn2073-4360cs
dc.identifier.orcid0000-0003-0041-1400cs
dc.identifier.orcid0000-0002-6540-5637cs
dc.identifier.orcid0000-0002-2786-3098cs
dc.identifier.orcid0000-0002-3479-414Xcs
dc.identifier.orcid0000-0003-2682-5070cs
dc.identifier.other175614cs
dc.identifier.researcheridG-5990-2017cs
dc.identifier.researcheridC-1513-2018cs
dc.identifier.researcheridG-4589-2018cs
dc.identifier.researcheridD-8676-2018cs
dc.identifier.researcheridG-9656-2015cs
dc.identifier.scopus56524210000cs
dc.identifier.scopus56319462200cs
dc.identifier.scopus55616890300cs
dc.identifier.scopus7801591110cs
dc.identifier.urihttp://hdl.handle.net/11012/203358
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofPolymerscs
dc.relation.urihttps://www.mdpi.com/2073-4360/13/14/2286cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2073-4360/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpolymer heat sinken
dc.subjectthermal managementen
dc.subjectthermal conductivityen
dc.subjectradiationen
dc.subjectconvectionen
dc.subjectcompositesen
dc.titleInfluence of Ambient Temperature on Radiative and Convective Heat Dissipation Ratio in Polymer Heat Sinksen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-175614en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:47:25en
sync.item.modts2025.01.17 16:35:14en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Laboratoř přenosu tepla a prouděnícs
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