A Review of High-Heat-Flux Heat Removal Technologies

[+] Author and Article Information
M. A. Ebadian1

Department of Mechanical and Materials Engineering,  Florida International University, Miami, FL 33199Ebadian@fiu.edu

C. X. Lin

Department of Mechanical, Aerospace, and Biomedical Engineering,  The University of Tennessee, Knoxville, TN 37996


Corresponding author.

J. Heat Transfer 133(11), 110801 (Sep 02, 2011) (11 pages) doi:10.1115/1.4004340 History: Received August 01, 2010; Revised June 02, 2011; Published September 02, 2011; Online September 02, 2011

In recent years, high-heat-flux cooling techniques have received great attention from researchers around the world due to its importance in thermal management of both commercial and defense high-power electronic devices. Although impressive progress has been made during the last few decades, high-heat-flux removal still largely remains as a challenging subject that needs further exploration and study. In this paper, we have reviewed recent developments in several high-heat-flux heat removal techniques, including microchannels, jet impingements, sprays, wettability effects, and piezoelectrically driven droplets. High-heat-flux removal can be achieved effectively by either single-phase flow or two-phase flow boiling heat transfer. Better understandings of the underlying heat transfer mechanisms for performance improvement are discussed.

Copyright © 2011 by American Society of Mechanical Engineers
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Figure 1

Maximum heat fluxes reported over the years

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Figure 2

Three-dimensional circuit with microchannel cooling system [30]

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Figure 3

CHF mechanisms for flow boiling in uniformly heated channels: dryout in saturated flow boiling and DNB in subcooled flow boiling [42]

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Figure 4

Schematics of flow patterns in a microchannel with micropin-fins [43]

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Figure 5

The heat transfer performance of the microjet [59]

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Figure 6

Dimensional heat transfer performance of both jet arrays with water [64]

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Figure 7

Heat fluxes in a hybrid cooling system with circular microjets [65]

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Figure 8

Bubble growth and condensation inside the hybrid module for (a) circular jets and (b) slot jet [65]

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Figure 9

Average Nusselt number as a function of the heat flux at different Weber numbers [67]

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Figure 10

Enhanced surfaces: geometry cross-sectional and CCD views [70]

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Figure 11

Maximum heat fluxes achieved by different cooling technologies



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