Detail publikace

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

KOMÍNEK, J. ZACHAR, M. GUZEJ, M. BARTULI, E. KOTRBÁČEK, P.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Miniaturization 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.

Klíčová slova

polymer heat sink; thermal management; thermal conductivity; radiation; convection; composites

Autoři

KOMÍNEK, J.; ZACHAR, M.; GUZEJ, M.; BARTULI, E.; KOTRBÁČEK, P.

Vydáno

12. 6. 2021

Nakladatel

MDPI

Místo

BASEL

ISSN

2073-4360

Periodikum

Polymers

Ročník

13

Číslo

14

Stát

Švýcarská konfederace

Strany od

1

Strany do

12

Strany počet

12

URL

https://www.mdpi.com/2073-4360/13/14/2286

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203358

BibTex

@article{BUT175614,
  author="Jan {Komínek} and Martin {Zachar} and Michal {Guzej} and Erik {Bartuli} and Petr {Kotrbáček}",
  title="Influence of Ambient Temperature on Radiative and Convective Heat Dissipation Ratio in Polymer Heat Sinks",
  journal="Polymers",
  year="2021",
  volume="13",
  number="14",
  pages="1--12",
  doi="10.3390/polym13142286",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/13/14/2286"
}