Heat transfer and flow behaviour of aqueous suspensions of titanate nanotubes (nanofluids)
文献类型：期刊论文
| 作者 | Chen, Haisheng1,2; Yang, Wei2; He, Yurong2; Ding, Wong2; Zhang, Lingling2; Tan, Chunqing1; Lapkin, Alexei A.3; Bavykin, Dmitry V.4 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2008-03-18 |
| 卷号 | 183期号:1页码:63-72 |
| 关键词 | titanate nanotubes nanofluids effective thermal conductivity rheological behaviour convective heat transfer heat transfer enhancement |
| 英文摘要 | Titanate nanotubes of an aspect ratio of similar to 10 are synthesized, characterised and dispersed in water to form stable nanofluids containing 0.5, 1.0 and 2.5 wt.% of the nanotubes. Experiments are then carried out to investigate the effective thermal conductivity, theological behaviour and forced convective heat transfer of the nanofluids. The results show a small thermal conductivity enhancement of similar to 3% at 25 degrees C and similar to 5% at 40 degrees C for the 2.5 wt.% nanofluid. The nanofluids are found to be non-Newtonian with obvious shear thinning behaviour with the shear viscosity decreasing with increasing shear rate at low shear rates. The shear viscosity approaches constant at a shear rate higher than similar to 100-1000 s(-1) depending nanoparticle concentration. The high shear viscosity is found to be much higher than that predicted by the conventional viscosity models for dilute suspensions. Despite the small thermal conduction enhancement, an excellent enhancement is observed on the convective heat transfer coefficient, which is much higher than that of the thermal conductivity enhancement. In comparison with nanofluids containing spherical titania nanoparticles under similar conditions, the enhancement of both thermal conductivity and convective heat transfer coefficient of the titanate nanotube nanofluids is considerably higher indicating the important role of particle shape in the heat transfer enhancement. Possible mechanisms are also proposed for the observed enhancement of the convective heat transfer coefficient. (C) 2007 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | EFFECTIVE THERMAL-CONDUCTIVITY ; ROD-LIKE MACROMOLECULES ; NANOPARTICLES NANOFLUIDS ; CONCENTRATED-SOLUTION ; CONVECTIVE-TRANSPORT ; PARTICLE MIGRATION ; MODEL ; TIO2 ; ENHANCEMENT ; DYNAMICS |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000254787100009 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/106369]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing, Peoples R China 2.Univ Leeds, Inst Particle Sci & Engn, Leeds, W Yorkshire, England 3.Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England 4.Univ Southampton, Sch Engn Sci, Southampton, Hants, England |
| 推荐引用方式 GB/T 7714 | Chen, Haisheng,Yang, Wei,He, Yurong,et al. Heat transfer and flow behaviour of aqueous suspensions of titanate nanotubes (nanofluids)[J]. POWDER TECHNOLOGY,2008,183(1):63-72. |
| APA | Chen, Haisheng.,Yang, Wei.,He, Yurong.,Ding, Wong.,Zhang, Lingling.,...&Bavykin, Dmitry V..(2008).Heat transfer and flow behaviour of aqueous suspensions of titanate nanotubes (nanofluids).POWDER TECHNOLOGY,183(1),63-72. |
| MLA | Chen, Haisheng,et al."Heat transfer and flow behaviour of aqueous suspensions of titanate nanotubes (nanofluids)".POWDER TECHNOLOGY 183.1(2008):63-72. |
入库方式： OAI收割
来源：工程热物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。