Journal ArticleDOI
Anomalous thermal conductivity enhancement in nanotube suspensions
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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.read more
Citations
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Thermal energy storage behavior of Al2O3–H2O nanofluids
TL;DR: In this article, the potential of Al 2 O 3 -H 2 O nanofluids as a new phase change material for the thermal energy storage of cooling systems was evaluated and the thermal response test showed that the addition of Al O 3 nanoparticles remarkably decreases the supercooling degree of water, advances the beginning freezing time and reduces the total freezing time.
Journal ArticleDOI
Potential of carbon nanohorn-based suspensions for solar thermal collectors
Elisa Sani,Luca Mercatelli,Simona Barison,Cesare Pagura,Filippo Agresti,Laura Colla,Paola Sansoni +6 more
TL;DR: In this paper, the optical characterization of a new fluid consisting of single-wall carbon nanohorns and ethylene glycol for solar energy applications was reported, which showed that nanohorn spectral features are far more favorable than those of amorphous carbon for the specific application.
Journal ArticleDOI
Flow-boiling heat transfer of R-134a-based nanofluids in a horizontal tube
TL;DR: In this paper, the influence of nanoparticles on the flow-boiling of R-134a/polyolester mixtures was quantified for flows of low vapor quality. But the influence was not quantified in the case of low-vapour quality.
Journal ArticleDOI
Thermodynamic properties and thermal stability of ionic liquid-based nanofluids containing graphene as advanced heat transfer fluids for medium-to-high-temperature applications
TL;DR: In this paper, the experimental technique for measuring the thermal conductivity of nanofluids at the temperatures above 100°C has been developed, and a systematic research on the thermodynamic properties including thermal conductivities, viscosity, specific heat and density, of the graphene-dispersed nano-fluids based on the ionic liquid 1-hexyl-3-methylimidazolium tetrafluoroborate ([HMIM]BF 4 ), has been conducted at the temperature ranging from room temperature to around 200°C.
Journal ArticleDOI
Developing a new correlation to estimate the thermal conductivity of MWCNT-CuO/water hybrid nanofluid via an experimental investigation
TL;DR: In this paper, the enhancement of thermal conductivities of water in the presence of copper oxide and multiwalled carbon nanotubes is investigated for the first time, and the results show that the thermal conductivity of the nanofluid increases at more solid concentration.
References
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Journal ArticleDOI
Helical microtubules of graphitic carbon
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.
Journal ArticleDOI
Thermal Conductivity of Heterogeneous Two-Component Systems
R. L. Hamilton,O. K. Crosser +1 more
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