Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Flow and heat transfer in microchannels with rough wall surface | |
| Shen, S; Xu, JL; Zhou, JJ; Chen, Y | |
| 2006-07-01 | |
| Source Publication | ENERGY CONVERSION AND MANAGEMENT
 |
| Volume | 47Issue:11-12Pages:1311-1325 |
| Abstract | 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. |
| Subtype | Article |
| Keyword | Microchannels Surface Roughness Thermally Developing Flow Heat Transfer |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.enconman.2005.09.001 |
| WOS Subject Extended | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics |
| WOS Keyword | TRAPEZOIDAL SILICON MICROCHANNELS ; FRICTION FACTORS ; WATER-FLOW ; REFRIGERATORS |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear |
| WOS ID | WOS:000236522200001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10266 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | Chinese Acad Sci, Micro Energy Syst Lab, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation 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. |
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