Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

12. 6. 2021

Publisher

MDPI

Location

BASEL

ISBN

2073-4360

Periodical

Polymers

Year of study

13

Number

14

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

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

Full text in the Digital Library

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"
}