Enhancing Flow Boiling Heat Transfer in Microchannels for Thermal Management with Monolithically-Integrated Silicon Nanowires

被引：190

作者：

Li, D. ^{[1
,2
]}

Wu, G. S. ^{[1
,3
]}

Wang, W. ^{[1
]}

Wang, Y. D. ^{[1
]}

Liu, Dong ^{[4
]}

Zhang, D. C. ^{[2
]}

Chen, Y. F. ^{[3
]}

Peterson, G. P. ^{[5
]}

Yang, Ronggui ^{[1
]}

机构：

[1] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA

[2] Peking Univ, Dept Microelectron, Beijing 100871, Peoples R China

[3] Southeast Univ, Sch Mech Engn, Nanjing 211189, Jiangsu, Peoples R China

[4] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

[5] Georgia Inst Technol, Sch Mech Engn, Atlanta, GA 30332 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 07期

基金：

美国国家科学基金会;

关键词：

Si nanowires; microchannels; flow boiling; thermal management; 2-PHASE FLOW; INSTABILITIES; SINKS;

D O I：

10.1021/nl300049f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermal management has become a critical issue for high heat flux electronics and energy systems. Integrated two-phase microchannel liquid-cooling technology has been envisioned as a promising solution, but with great challenges in flow instability. In this work, silicon nanowires were synthesized in situ in parallel silicon microchannel arrays for the first time to suppress the flow instability and to augment flow boiling heat transfer. Significant enhancement in flow boiling heat transfer performance was demonstrated for the nanowire-coated microchannel heat sink, such as an early onset of nucleate boiling, a delayed onset of flow oscillation, suppressed oscillating amplitudes of temperature and pressure drop, and an increased heat transfer coefficient.

引用

页码：3385 / 3390

页数：6

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