Thermal performance of multi-walled carbon nanotubes (MWCNTs) in aqueous suspensions with surfactants SDBS and SDS

被引：105

作者：

Wusiman, Kuerbanjiang ^{[1
]}

Jeong, Hyomin ^{[2
]}

Tulugan, Kelimu ^{[1
]}

Afrianto, Handry ^{[1
]}

Chung, Hanshik ^{[2
]}

机构：

[1] GyeongSang Natl Univ, Dept Mech & Precis Engn, Tongyoung 650160, Gyeongnam, South Korea

[2] GyeongSang Natl Univ, Inst Marine Ind, Dept Energy & Mech Engn, Tongyoung 650160, Gyeongnam, South Korea

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2013年 / 41卷

基金：

新加坡国家研究基金会;

关键词：

CNTs; Nanofluid; Thermal conductivity; Surfactant; CONDUCTIVITY; NANOFLUIDS; WATER; ENHANCEMENT; PH;

D O I：

10.1016/j.icheatmasstransfer.2012.12.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The surfactants of sodium dodecylbenzene sulfonate (SDBS) and sodium dodecyl sulfate (SDS) are used in multi-walled carbon nanotubes (MWCNT) aqueous solution respectively due to the hydrophobic nature of MWCNT. Thermal conductivities of nanofluid solutions are measured via the LAMBDA measuring system by transient hot wire method and compared as function of dispersing two different surfactants. MWCNT (hereinafter sometime referred to as CNTs) nanofluid gets a good dispersion and long time stability with both surfactants within 3/1 relative ratio mixture. However, the thermal conductivity of nanofluid decreases with increasing the concentration of both surfactants, and CNT nanofluid with SDBS exhibits better thermal conductivity than that with SDS dispersant. Finally the proper mixture ratio of CNT nanofluid with SDBS and pH value is examined and results show that 0.5 wt.% CNT nanofluids with 0.25 wt.% SDBS, at pH approximate to 9.0 condition display the best thermal performance which increases by 2.8% totally on thermal conductivity compared with that of base fluid distilled water (DW). (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：28 / 33

页数：6