NDLI: Enhancement of air jet impingement heat transfer using pin-fin heat sinks

Content Provider	IEEE Xplore Digital Library
Author	El-Sheikh, H.A. Gurimella, S.V.
Copyright Year	1999
Abstract	The enhancement of heat transfer from a discrete heat source in confined air jet impingement was experimentally investigated. A variety of pin-fin heat sinks were mounted on the heat source and the resulting enhancement studied, Average heat transfer coefficients are presented for a range of jet Reynolds numbers (8000/spl les/Re/spl les/45000) and orifice diameters (12.7/spl les/d/spl les/38.1 mm). A total fin effectiveness was computed for the pinned heat sinks relative to the unpinned ones, and was in the range of 2.4 to 9.2; the highest value was obtained for the largest nozzle diameter. Heat transfer rates from the bare heat source were increased by a factor of 7.5 to 72 due to the introduction of the heat sinks. Results for the average heat transfer coefficient were correlated in terms of Reynolds number, fluid properties and geometric parameters of the heat sinks.
Sponsorship	IEEE Components, Packaging, and Manufacturing Technology Society
Starting Page	300
Ending Page	308
Page Count	9
File Size	242617
File Format	PDF
ISSN	15213331
Volume Number	23
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heat sinks Heat transfer Thermal resistance Orifices Temperature Thermal conductivity Mechanical engineering Power system reliability Thermal management of electronics Electronic components
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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