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Author Moffat, R.J.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2007
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Heat sinks ♦ Thermal resistance ♦ Resistance heating ♦ Predictive models ♦ Heat transfer ♦ Heat engines ♦ Electronics cooling ♦ Mechanical engineering ♦ Thermal engineering ♦ Reliability theory ♦ Electronics Cooling ♦ Air-cooling ♦ Heat Sinks ♦ Cold Plates ♦ Heat Exchangers ♦ Thermal Resistance
Abstract Heat sink performance is generally described by quoting its thermal resistance, $R_{th},$ in degrees C per Watt. When $R_{th}$ is based on data, it can be relied on. When it is predicted, there may be problems. $R_{th}=1/hA_{eff},$ the 'convective resistance model', can over-predict the heat transfer by more than 100%. Adding a 'fluid resistance' can get to the right result, but the most reliable approach is to use heat exchanger theory, which many workers have done. The intent of this paper is to point out why heat exchanger theory is the most appropriate approach for predicting the thermal resistance of a heat sink, and to illustrate some of the benefits of that approach, including some new possibilities for compact models. There is no claim to originality: many others have used, and are still using, heat exchanger theory in this way.
Description Author affiliation: Dept. of Mech. Eng., Stanford Univ., Palo Alto, CA (Moffat, R.J.)
ISBN 1424409586
ISSN 10652221
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2007-03-18
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 330.45 kB
Page Count 8
Starting Page 200
Ending Page 207

Source: IEEE Xplore Digital Library