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RESEARCH PAPERS

A Systematic Methodology for Optimal Design of Two-Phase Micro-Channel Heat Sinks

[+] Author and Article Information
Weilin Qu

Purdue University International Electronic Cooling Alliance (PUIECA), Boiling and Two-Phase Flow Laboratory, School of Mechanical Engineering,  Purdue University, West Lafayette, IN 47907quw@purdue.edu

Issam Mudawar1

Purdue University International Electronic Cooling Alliance (PUIECA), Boiling and Two-Phase Flow Laboratory, School of Mechanical Engineering,  Purdue University, West Lafayette, IN 47907mudawar@ecn.purdue.edu

1

Author to whom correspondence should be addressed. Tel. (765) 494-5705; fax (765) 494-0539

J. Electron. Packag 127(4), 381-390 (Dec 17, 2004) (10 pages) doi:10.1115/1.2056571 History: Received February 25, 2004; Revised December 17, 2004

This study provides a comprehensive methodology for optimizing the design of a two-phase micro-channel heat sink. The heat sink parameters are grouped into geometrical parameters, operating parameters, and thermal/fluid parameters. The objective of the proposed methodology is to optimize micro-channel dimensions in pursuit of acceptable values for the thermal/fluid parameters corresponding to a given heat flux, coolant, and overall dimensions of the heat generating device to which the heat sink is attached. The proposed optimization methodology yields an acceptable design region encompassing all possible micro-channel dimensions corresponding to a prescribed coolant flow rate or pressure drop. The designer is left with the decision to select optimum channel dimensions that yield acceptable values of important thermal/fluid parameters that are easily predicted by the optimization procedure.

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Copyright © 2005 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Construction of typical two-phase micro-channel heat sink

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Figure 2

(a) Flow regions in a micro-channel and (b) temperature profile along stream-wise direction

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Figure 3

Variations of minimum effective heat flux, maximum effective heat flux, pressure drop, and channel bottom temperature at heat sink outlet with total volume flow rate for (a) qeff″=100W∕cm2, (b) qeff″=500W∕cm2, and (c) qeff″=1000W∕cm2.

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Figure 4

Performance map for maximum effective heat flux for (a) Hch=1000μm and (b) Hch=500μm

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Figure 5

Performance map for (a) pressure drop and (b) channel bottom temperature at heat sink outlet for qeff″=500W∕cm2 and Qt=60ml∕min

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Figure 6

Performance map for (a) pressure drop and (b) channel bottom temperature at heat sink outlet for qeff″=500W∕cm2 and Qt=40ml∕min

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Figure 7

Performance map for (a) total volume flow rate and (b) channel bottom temperature at heat sink outlet for qeff″=500W∕cm2 and ΔP=0.1bar

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Figure 8

Performance map for (a) total volume flow rate and (b) channel bottom temperature at heat sink outlet for qeff″=500W∕cm2 and ΔP=0.2bar

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Figure 9

Flow chart of numerical procedure for optimal design of two-phase micro-channel heat sink

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Figure 10

General performance map trends for (a) fixed total volume flow rate and (b) fixed pressure drop

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