Comparative analysis of different cooling fin types for countering LED luminaires' heat problems

Canan Karatekin*, Oytun Kökkaya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A significant problem with high-power LED luminaires is heat. Aluminum heat sinks have been extensively used as a solution. The most common method for heat sinks that increases surface area uses fins. In the present study, pin- and plate-fins were compared and it was observed that, in equal surface areas, better cooling was achieved by pin-fins. Thus, the study's concentration narrowed to pin-fins and the results of different pin-fins were compared. Simulations of a sample group were conducted by using different numbers of fins, and the number of fins giving the lowest Tmax value (the highest junction point temperature) was accepted to be optimum for each group; then the optimum values were compared among the different groups. Keeping the base width of fins constant, optimum values were obtained for the same number of fins when the fin height was changed. However, keeping fin height constant, surface areas of optimum values and measured Tmax values were very close to one another other, even if the base width of fins was changed. The results have practical significance in designing high-power LED luminaires.

Original languageEnglish
Pages (from-to)454-466
Number of pages13
JournalTurkish Journal of Electrical Engineering and Computer Sciences
Volume26
Issue number1
DOIs
Publication statusPublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 TÜBITAK.

Keywords

  • Base width
  • Fin height
  • High-power LED luminaire
  • Junction point temperature
  • LED cooling
  • Pin-fin heat sink
  • Plate-fin heat sink

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