Journal ArticleDOI
Anomalous thermal conductivity enhancement in nanotube suspensions
Reads0
Chats0
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
More filters
Journal ArticleDOI
A review on application of nanofluid in various types of heat pipes
Mohammad Alhuyi Nazari,Mohammad Hossein Ahmadi,Milad Sadeghzadeh,Mohammad Behshad Shafii,Marjan Goodarzi +4 more
TL;DR: In this paper, a comprehensive literature review is performed on the nanofluids' applications in heat pipes, based on reviewed studies, it is observed that there must be a selected amount of concentration for the high-performance utilization of nanoparticles; high concentration of nanop particles causes a higher thermal resistance which is mainly attributed to increment in the dynamic viscosity and the higher possibility of particles' agglomeration.
Dissertation
Optical characterization of thermal transport from the nanoscale to the macroscale
TL;DR: Chen et al. as mentioned in this paper examined the characterization of thermal transport over length scales from nanometers upward in solids and liquids using pump-probe optical techniques, and the theory for interpreting the measurement results is developed using a linear systems approach, accounting for pulse accumulation effects and anisotropic thermal properties.
Journal ArticleDOI
Nanofluids mediating surface forces.
TL;DR: Recent results on equilibrium and dynamic surface forces between macroscopic surfaces in nanofluids are reviewed, highlighting the overriding trends in the correlation between the physical parameters that characterise nan ofluids and the surface forces they mediate.
Journal ArticleDOI
A model of nanofluids effective thermal conductivity based on dimensionless groups
TL;DR: In this paper, a novel model for the prediction of the effective thermal conductivity of nanofluids based on dimensionless groups is presented. But the model is not suitable for the case of nanoparticles.
Journal ArticleDOI
Influence of ultrasonication energy on the dispersion consistency of Al2O3–glycerol nanofluid based on viscosity data, and model development for the required ultrasonication energy density
TL;DR: Achieving homogenised and stable suspensions has been one of the most important research topics in nanofluid investigations as discussed by the authors, especially from the two-step method, is often accompani...
References
More filters
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
Related Papers (5)
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more