Flow and heat transfer in microchannels with rough wall surface

doi:10.1016/j.enconman.2005.09.001

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	Flow and heat transfer in microchannels with rough wall surface
	Shen, S; Xu, JL; Zhou, JJ; Chen, Y
	2006-07-01
发表期刊	ENERGY CONVERSION AND MANAGEMENT
卷号	47 期号:11-12 页码:1311-1325
摘要	Experiments were conducted to investigate the single phase convective heat transfer in a compact heat sink consisting of 26 rectangular microchannels of 300 mu m width and 800 mu m depth. The relative roughness is estimated to be 4-6%. Deionized water was used as the working fluid. Tests were performed with the Reynolds number range of 162-1257, the inlet liquid temperatures of 30, 50 and 70 degrees C and the heating powers of 140-450 W. The planform area is 5.0 x 1.53 cm(2). it is found that the friction factors and local and average Nusselt numbers significantly depart from those of conventional theories, possibly attributable to the surface roughness. The hydraulically developed but thermally developing flow results in decreased Nusselt numbers versus the non-dimensional axial distance. The temperature dependent fluid physical properties also influence the heat transfer characteristics to some extent. Correlations were provided for the friction factors and the Nusselt numbers. (c) 2005 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Microchannels Surface Roughness Thermally Developing Flow Heat Transfer
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.enconman.2005.09.001
研究领域[WOS]	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics
关键词[WOS]	TRAPEZOIDAL SILICON MICROCHANNELS ; FRICTION FACTORS ; WATER-FLOW ; REFRIGERATORS
收录类别	SCI
语种	英语
WOS类目	Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear
WOS记录号	WOS:000236522200001
引用统计	被引频次：144[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10266
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Micro Energy Syst Lab, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Shen, S,Xu, JL,Zhou, JJ,et al. Flow and heat transfer in microchannels with rough wall surface[J]. ENERGY CONVERSION AND MANAGEMENT,2006,47(11-12):1311-1325.
APA	Shen, S,Xu, JL,Zhou, JJ,&Chen, Y.(2006).Flow and heat transfer in microchannels with rough wall surface.ENERGY CONVERSION AND MANAGEMENT,47(11-12),1311-1325.
MLA	Shen, S,et al."Flow and heat transfer in microchannels with rough wall surface".ENERGY CONVERSION AND MANAGEMENT 47.11-12(2006):1311-1325.