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Journal ArticleDOI

Anomalous thermal conductivity enhancement in nanotube suspensions

Stephen U. S. Choi, +4 more
- 24 Sep 2001 - 
- Vol. 79, Iss: 14, pp 2252-2254
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TLDR
In this paper, the authors have produced nanotube-in-oil suspensions and measured their effective thermal conductivity, which is anomalously greater than theoretical predictions and is nonlinear with nanotubes loadings.
Abstract
We have produced nanotube-in-oil suspensions and measured their effective thermal conductivity. The measured thermal conductivity is anomalously greater than theoretical predictions and is nonlinear with nanotube loadings. The anomalous phenomena show the fundamental limits of conventional heat conduction models for solid/liquid suspensions. We have suggested physical concepts for understanding the anomalous thermal behavior of nanotube suspensions. In comparison with other nanostructured materials dispersed in fluids, the nanotubes provide the highest thermal conductivity enhancement, opening the door to a wide range of nanotube applications.

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Journal ArticleDOI

Nanofluids with CNTs for automotive applications

TL;DR: In this article, the carboxylated water is used with nano-sized silver, copper and aluminium oxide nanotubes and tested for heat transfer performance in an air cooled heat exchanger similar to an automotive radiator.
Journal ArticleDOI

Series solutions for magnetohydrodynamic flow of non-Newtonian nanofluid and heat transfer in coaxial porous cylinder with slip conditions

TL;DR: In this article, a study on the flow of non-Newtonian nanofluid between two coaxial cylinders is made and two types of series solutions are constructed by choosing constant and variable viscosity.
Dissertation

Nanofluids with Enhanced Thermal Transport Properties

Zenghu Han
TL;DR: In this article, a nanoemulsification technique has been developed and used to synthesize nanofluids, which exhibit substantially higher thermal conductivities than those of the corresponding base fluids.
Journal ArticleDOI

Effect of magnetic field and thermal radiation on natural convection in a square cavity filled with TiO2 nanoparticles using Tiwari-Das nanofluid model

TL;DR: In this paper, a finite difference method is implemented to solve the governing non-linear partial differential equations representing momentum and temperature equations in a square cavity with thermal radiation and magnetic field.
Journal ArticleDOI

Numerical investigation of subcooled flow boiling of a nanofluid

TL;DR: In this article, the convective heat transfer coefficient for a nanofluid in subcooled flow boiling is investigated numerically using two phase mixture model and a good agreement is realized.
References
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Journal ArticleDOI

Helical microtubules of graphitic carbon

Sumio Iijima
- 01 Nov 1991 - 
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Book

A Treatise on Electricity and Magnetism

TL;DR: The most influential nineteenth-century scientist for twentieth-century physics, James Clerk Maxwell (1831-1879) demonstrated that electricity, magnetism and light are all manifestations of the same phenomenon: the electromagnetic field as discussed by the authors.
Book

Physical properties of carbon nanotubes

TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
Journal ArticleDOI

Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles

TL;DR: In this paper, it was shown that a "nanofluid" consisting of copper nanometer-sized particles dispersed in ethylene glycol has a much higher effective thermal conductivity than either pure or pure glycol or even polyethylene glycol containing the same volume fraction of dispersed oxide nanoparticles.
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