Publication detail

NUMERICAL THERMAL COMPARISON OF HEAT SINK MATERIALS FOR AUTOMOTIVE LED HEADLAMPS

ZACHAR, M. GUZEJ, M. HORSKÝ, J.

Original Title

NUMERICAL THERMAL COMPARISON OF HEAT SINK MATERIALS FOR AUTOMOTIVE LED HEADLAMPS

English Title

NUMERICAL THERMAL COMPARISON OF HEAT SINK MATERIALS FOR AUTOMOTIVE LED HEADLAMPS

Type

conference paper

Language

en

Original Abstract

Currently, aluminium is the most widely used heat sink material for cooling LEDs in automotive headlamps because of its good thermophysical properties. But the headlamps manufacturers are still looking for other material solutions, which could be better than the aluminium one. One of the possibilities is using plastics with high thermal conductivity, because even if its conductivity is lower than aluminium’s, it is much easier to shape to various forms, which could be better for heat transportation and the cost of this solution could be much lower. This paper deals with the comparison of a real heat sink geometry, used in the front headlamp of automobile, where it serves to cool LEDs. A numerical comparison between three materials was made: firstly the actually used aluminium alloy, secondly a imaginative material with isotropic thermal conductivity 20 W∙m-1∙K-1 serving as a comparision between plastic material and thirdly a plastic material with anisotropic thermal conductivity which ranges from 5 to 20 W∙m-1∙K-1.

English abstract

Currently, aluminium is the most widely used heat sink material for cooling LEDs in automotive headlamps because of its good thermophysical properties. But the headlamps manufacturers are still looking for other material solutions, which could be better than the aluminium one. One of the possibilities is using plastics with high thermal conductivity, because even if its conductivity is lower than aluminium’s, it is much easier to shape to various forms, which could be better for heat transportation and the cost of this solution could be much lower. This paper deals with the comparison of a real heat sink geometry, used in the front headlamp of automobile, where it serves to cool LEDs. A numerical comparison between three materials was made: firstly the actually used aluminium alloy, secondly a imaginative material with isotropic thermal conductivity 20 W∙m-1∙K-1 serving as a comparision between plastic material and thirdly a plastic material with anisotropic thermal conductivity which ranges from 5 to 20 W∙m-1∙K-1.

Keywords

heat sink, aluminium, plastic, LED, headlamp

Released

15.05.2017

ISBN

978-80-214-5497-2

Book

ENGINEERING MECHANICS 2017

Pages from

1078

Pages to

1081

Pages count

4

BibTex


@inproceedings{BUT135850,
  author="Martin {Zachar} and Michal {Guzej} and Jaroslav {Horský}",
  title="NUMERICAL THERMAL COMPARISON OF HEAT SINK MATERIALS FOR AUTOMOTIVE LED HEADLAMPS",
  annote="Currently, aluminium is the most widely used heat sink material for cooling LEDs in automotive headlamps because of its good thermophysical properties. But the headlamps manufacturers are still looking for other material solutions, which could be better than the aluminium one. One of the possibilities is using plastics with high thermal conductivity, because even if its conductivity is lower than aluminium’s, it is much easier to shape to various forms, which could be better for heat transportation and the cost of this solution could be much lower. This paper deals with the comparison of a real heat sink geometry, used in the front headlamp of automobile, where it serves to cool LEDs. A numerical comparison between three materials was made: firstly the actually used aluminium alloy, secondly a imaginative material with isotropic thermal conductivity 20 W∙m-1∙K-1 serving as a comparision between plastic material and thirdly a plastic material with anisotropic thermal conductivity which ranges from 5 to 20 W∙m-1∙K-1.",
  booktitle="ENGINEERING MECHANICS 2017",
  chapter="135850",
  howpublished="print",
  year="2017",
  month="may",
  pages="1078--1081",
  type="conference paper"
}