Heat Transfer Enhancement in Electronic Modules Using Various Secondary Air Injection Hole Arrangements
- 1 May 1998
- journal article
- Published by ASME International in Journal of Heat Transfer
- Vol. 120 (2), 342-347
- https://doi.org/10.1115/1.2824254
Abstract
This paper reports an experimental investigation to study the effects of using various designs of secondary air injection hole arrangements on the heat transfer coefficient and the pressure drop characteristics of an array of rectangular modules at different values of free-stream Reynolds numbers in the range 8 × 103 to 2 × 104. The arrangement used is either one staggered row of simple holes or one row of compound injection holes. The pitch distances between the injection holes, as well as the injection angles, were varied in both the streamwise and spanwise directions. Generally, the presence of secondary air through the injection hole arrangement can give up to 54 percent heat transfer enhancement just downstream of the injection holes. The amount of heat transfer enhancement and pressure drop across the electronic modules is very much dependent on the design of the injection holes. The simple angle injection hole arrangement tends to give a better heat transfer enhancement and less pressure drop than the compound angle holes.Keywords
This publication has 7 references indexed in Scilit:
- Convective heat transfer and pressure drop characteristics of various array configurations to simulate the cooling of electronic modulesInternational Journal of Heat and Mass Transfer, 1996
- Heat transfer enhancement in electronic modules using ribs and “film-cooling-like” techniquesInternational Journal of Heat and Fluid Flow, 1996
- Heat transfer enhancement in a ribbed duct using vortex generatorsInternational Journal of Heat and Mass Transfer, 1993
- Impingement Cooling of ElectronicsJournal of Heat Transfer, 1992
- Turbulent Heat Transfer and Friction in Pin Fin Channels With Lateral Flow EjectionJournal of Heat Transfer, 1989
- Enhanced and local heat transfer, pressure drop, and flow visualization for arrays of block-like electronic componentsInternational Journal of Heat and Mass Transfer, 1983
- Heat transfer and pressure drop characteristics of arrays of rectangular modules encountered in electronic equipmentInternational Journal of Heat and Mass Transfer, 1982