An experimental study of the enhancement of air-cooling limits for telecom/datacom heat sinks applications using an impinging air jet

Author

Sansoucy, Eric ; Oosthuizen, Patrick H. ; Refai-Ahmed, Gamal

Author_Institution

Dept. of Mech. Eng., Ottawa Univ., Ont., Canada

fYear

2004

fDate

1-4 June 2004

Firstpage

150

Abstract

An experimental study was conducted to investigate the heat transfer from a parallel flat plate heat sink under a turbulent impinging air jet. A horizontal nozzle plate confined the target surface. The jet was discharged from a sharp-edged nozzle in the nozzle plate. Average Nusselt numbers are reported for Pr=0.7, 5000≤Re≤30000, L/d=2.5 and 0.833 at H/d=3 where L, H and d define the length of the square heat source, nozzle-to-target spacing and nozzle diameter, respectively. Tests were also conducted for an impinging flow over a flat plate, flush with the top surface of the target plate. The average Nusselt numbers from the heat sink were compared to those for a flat plate to determine the overall performance of the heat sink in a confined impingement arrangement. The experimental results were compared with the numerical predictions obtained in an earlier study.

Keywords

confined flow; cooling; data communication; heat sinks; jets; nozzles; turbulence; Nusselt number; air cooling limits; datacom heat sinks applications; heat transfer; horizontal nozzle plate; impinging flow; parallel flat plate heat sink; sharp edged nozzle; telecom applications; turbulent impinging air jet; Conductive films; Electronics cooling; Heat engines; Heat sinks; Heat transfer; Mechanical engineering; Propagation losses; Surface discharges; Telecommunications; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermal and Thermomechanical Phenomena in Electronic Systems, 2004. ITHERM '04. The Ninth Intersociety Conference on

Print_ISBN

0-7803-8357-5

Type

conf

DOI

10.1109/ITHERM.2004.1319167

Filename

1319167