The thermal conductivity of alumina nanoparticles dispersed in ethylene glycol

被引：123

作者：

Beck, Michael P. ^{[1
]}

Sun, Tongfan ^{[1
]}

Teja, Amyn S. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

FLUID PHASE EQUILIBRIA | 2007年 / 260卷 / 02期

关键词：

thermal conductivity; nanofluids; alumina nanoparticles; ethylene glycol;

D O I：

10.1016/j.fluid.2007.07.034

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The thermal conductivities of several nanofluids (dispersions of alumina nanoparticles in ethylene glycol) were measured at temperatures ranging from 298 to 411 K using a liquid metal transient hot wire apparatus. Our measurements span the widest range of temperatures that have been investigated to date for any nanofluid. A maximum in the thermal conductivity versus temperature behavior was observed at all mass fractions of nanoparticles, closely following he behavior of the base fluid (ethylene glycol). Our results confirm that additional temperature contributions inherent in Brownian motion models are not necessary to describe the temperature dependence of the thermal conductivity of nanofluids. Our results also show that the effect of mass or volume fraction of nanoparticles on the thermal conductivity of nanofluids can be correlated using the Hamilton and Crosser or Yu and Choi models with one adjustable parameter (the shape factor in the Hamilton and Crosser model, or the ordered liquid layer thickness in the Yu and Choi model). (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：275 / 278

页数：4

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