The heat transfer characteristics of liquid cooling heatsink containing microchannels

被引：86

作者：

Chiu, Han-Chieh ^{[1
]}

Jang, Jer-Huan ^{[2
]}

Yeh, Hung-Wei ^{[1
]}

Wu, Ming-Shan ^{[2
]}

机构：

[1] Technol & Sci Inst No Taiwan, Dept Mech Engn, Taipei 112, Taiwan

[2] Ming Chi Univ Technol, Dept Mech Engn, Taipei 243, Taiwan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2011年 / 54卷 / 1-3期

关键词：

Microchannels; Aspect ratio; Porosity; Liquid cooling heatsink; Effective thermal resistance; RECTANGULAR MICROCHANNELS; NUMERICAL OPTIMIZATION; SILICON MICROCHANNELS; THERMAL PERFORMANCE; WATER-FLOW; SINK;

D O I：

10.1016/j.ijheatmasstransfer.2010.09.066

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper numerically and experimentally investigates the heat transfer performance and characteristics of liquid cooling heatsink containing microchannels. The effects of channel geometry and pressure drop between the entrance and exit of heatsink on the heat transfer performance are studied. The geometrical parameters include aspect ratio and cross-sectional porosity of the channels. The height of the microchannels is considered constant. The aspect ratio is set from 1.67 to 14.29 and the porosity is from 25% to 85%. The imposed pressure drop ranges between 490 and 2940 Pa. It is found that the aspect ratio corresponding to the lowest effective thermal resistance is changed with respect to the pressure drop. It is also noticed that the value of effective thermal resistance is almost a constant for cross-sectional porosity in the range of 53%-75%. The effective thermal resistance is increased when cross-sectional porosity is deviated from this range. In addition, the increasing of pressure drop enhances heat transfer performance for channels of high aspect ratio more than those of low aspect ratio. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：34 / 42

页数：9

共 22 条

[1]

Cengel Y. A., 2006, FLUID MECH

[2] Forced convection heat transfer in microchannel heat sinks [J].

Chen, Chien-Hsin .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (11-12) :2182-2189

[3] Optimization of micro heat exchanger: CFD, analytical approach and multi-objective evolutionary algorithms [J].

Foli, K ;

Okabe, T ;

Olhofer, M ;

Jin, YC ;

Sendhoff, B .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (5-6) :1090-1099

[4]

Harley J., 1989, Proceedings: IEEE Micro Electro Mechanical Systems. An Investigation of Micro Structures, Sensors, Actuators, Machines and Robots (IEEE Cat. No.89THO249-3), P25, DOI 10.1109/MEMSYS.1989.77954

[5]

Hoopman TL, 1990, ASME DSC, V19, P171

[6]

KIM SJ, 1999, ASME, V121, P635

[7]

KNIGHT RW, 1986, ASME, V113, P313

[8] Optimum thermal performance of microchannel heat sink by adjusting channel width and height [J].

Kou, Hong-Sen ;

Lee, Ji-Jen ;

Chen, Chih-Wei .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2008, 35 (05) :577-582

[9] Investigation of heat transfer in rectangular microchannels [J].

Lee, PS ;

Garimella, SV ;

Liu, D .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (09) :1688-1704

[10] 3-dimensional numerical optimization of silicon-based high performance parallel microchannel heat sink with liquid flow [J].

Li, J. ;

Peterson, G. P. .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (15-16) :2895-2904

← 1 2 3 →