Record number :
100106
Title of article :
Heat rejection limits of air cooled plane fin heat sinks for computer cooling
Author/Authors :
M.، Saini, نويسنده , , R.L.، Webb, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-70
From page :
71
To page :
0
Abstract :
Current desktop computers typically use fan-heat sinks for cooling the CPU, referred to as active heat sinks. This work seeks to determine the heat rejection limits for such fan-heat sinks, within specific fan and heat sink space limits. A fixed volume, 80 *60 *50 mm is chosen as the limiting dimensions, which includes the fan volume. The present work addresses plane fin heat sinks, on which a typical 60 mm fan is mounted. Both duct flow and impinging flow are considered. Analytically based models are used to predict the optimum geometry (minimum convection resistance) for plane fins with duct and impinging flow configurations. Also assessed are the effects of increased fan speed (up to 25%) and heat sink base size (33% increase) on air-cooling limits in duct and impinging flow. Tests on fan-heat sinks are done to validate the predictions. Optimization is also done for an enhanced (offset-strip) fin geometry in duct flow. The plane fin is found to outperform the enhanced geometry.
Keywords :
heat transfer , natural convection , Analytical and numerical techniques
Journal title :
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
Journal title :
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
Serial Year :
2003
Link To Document :
بازگشت