Effect of dispersion method on thermal conductivity and stability of nanofluid

被引：156

作者：

Nasiri, Aida ^{[2
]}

Shariaty-Niasar, Mojtaba ^{[2
]}

Rashidi, Alimorad ^{[1
]}

Amrollahi, Azadeh ^{[1
]}

Khodafarin, Ramin ^{[1
]}

机构：

[1] RIPI, Tehran, Iran

[2] Univ Tehran, Coll Eng, Dept Chem Engn, Tehran, Iran

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2011年 / 35卷 / 04期

关键词：

Dispersion method; CNT structures; Nanofluid; Thermal conductivity; Stability; CARBON NANOTUBES; AQUEOUS SUSPENSIONS; HEAT-TRANSFER; ENHANCEMENT; OXIDATION;

D O I：

10.1016/j.expthermflusci.2011.01.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Preparing a stable nanofluid with high thermal conductivity is of a great concern. In order to find an optimum dispersion method to achieve a better performance, five different carbon nanotube (CNT) structures, namely SWNTs (single wall CNT), DWNTs (double wall CNT), FWNTs (few wall CNT) and two different MWNTs (multiwall nanotubes) were synthesized to prepare nanofluids with three different dispersion methods namely functionalization, SDS/ultrasonic probe and SDS/ultrasonic bath. The experiments reveal that the best stability and thermal conductivity are associated with the functionalized nanofluids. Specifically, for the times after 50 h, the functionalized profiles begin to level off due to their higher stability, while the other two paths continue their declining trend. (C) 2011 Elsevier Inc. All rights reserved.

引用

收藏

页码：717 / 723

页数：7

相关论文

共 26 条

[1] Thermal conductivity enhancement in aqueous suspensions of carbon multi-walled and double-walled nanotubes in the presence of two different dispersants [J].

Assael, MJ ;

Metaxa, IN ;

Arvanitidis, J ;

Christofilos, D ;

Lioutas, C .

INTERNATIONAL JOURNAL OF THERMOPHYSICS, 2005, 26 (03) :647-664

[2] Thermal conductivity of suspensions of carbon nanotubes in water [J].

Assael, MJ ;

Chen, CF ;

Metaxa, I ;

Wakeham, WA .

INTERNATIONAL JOURNAL OF THERMOPHYSICS, 2004, 25 (04) :971-985

[3] Nanofluids containing carbon nanotubes treated by mechanochemical reaction [J].

Chen, Lifei ;

Xie, Huaqing ;

Li, Yang ;

Yu, Wei .

THERMOCHIMICA ACTA, 2008, 477 (1-2) :21-24

[4] Carbon nanotubes with hydrophilic surfaces produced by a wet-mechanochemical reaction with potassium hydroxide using ethanol as solvent [J].

Chen, Lifei ;

Xie, Huaqing ;

Li, Yang ;

Yu, Wei .

MATERIALS LETTERS, 2009, 63 (01) :45-47

[5] Silicon oil based multiwalled carbon nanotubes nanofluid with optimized thermal conductivity enhancement [J].

Chen, Lifei ;

Xie, Huaqing .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2009, 352 (1-3) :136-140

[6] Dye adsorption on biosolid adsorbents and commercially activated carbon [J].

Chiang Hung-Lung ;

Lin Kuo-Hsiung ;

Chen Shih-Yu ;

Choa Ching-Guan ;

Pan San-De .

DYES AND PIGMENTS, 2007, 75 (01) :52-59

[7] Chemical oxidation of multiwalled carbon nanotubes [J].

Datsyuk, V. ;

Kalyva, M. ;

Papagelis, K. ;

Parthenios, J. ;

Tasis, D. ;

Siokou, A. ;

Kallitsis, I. ;

Galiotis, C. .

CARBON, 2008, 46 (06) :833-840

[8] Heat transfer of aqueous suspensions of carbon nanotubes (CNT nanofluids) [J].

Ding, YL ;

Alias, H ;

Wen, DS ;

Williams, RA .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (1-2) :240-250

[9] An experimental study on the effect of ultrasonication on viscosity and heat transfer performance of multi-wall carbon nanotube-based aqueous nanofluids [J].

Garg, Paritosh ;

Alvarado, Jorge L. ;

Marsh, Charles ;

Carlson, Thomas A. ;

Kessler, David A. ;

Annamalai, Kalyan .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2009, 52 (21-22) :5090-5101

[10] Dispersion of carbon nanotubes in liquids [J].

Hilding, J ;

Grulke, EA ;

Zhang, ZG ;

Lockwood, F .

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2003, 24 (01) :1-41