NDLI: Experimental study on convection heat transfer of a single fin duct with pulsated airflow

Content Provider	IEEE Xplore Digital Library
Author	Ri Li Arik, M.
Copyright Year	2010
Description	Author affiliation: GE Global Research Center, Niskayuna, NY 12309 (Ri Li; Arik, M.)
Abstract	With the recent advancements in the electronics industry, thinner systems with greater functionality are on demand. Natural convection air-cooling is the method of choice for many low power electronics applications due to cost, availability, and reliability. However, its performance is very limited due to buoyancy dependent weak flow. Therefore, there is a need for further enhancement of natural convection. An experimental study is performed to understand the synthetic jet heat transfer over a single fin surface. The primary focus is for the understanding of the local temperatures and heat transfer coefficients on the fin surface. We used microscopic infrared temperature measurement technique to understand local temperatures leading to local convective cooling. Heat transfer is correlated to pulsation frequency, air velocity, duct width, flow angle, fin spacing, and jet orifice size. The results show that heat transfer can be improved by increasing air velocity and pulse rate. Smaller fin spacing can cause increase of heat transfer coefficient. Airflow impinging on one fin with angle can enhance heat transfer in the local area, but not for the fin duct as a whole. Strong heat transfer is observed close to the inlet and exit of the duct.
Starting Page	171
Ending Page	178
File Size	902380
Page Count	8
File Format	PDF
ISBN	9781612842684
e-ISBN	9781612842677
DOI	10.1109/THETA.2010.5766395
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-19
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement Uncertainty Cooling Ducts Heating Orifices Heat transfer
Content Type	Text
Resource Type	Article

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