Journal ArticleDOI
Natural convection of nano-fluids
TLDR
In this article, an apparently paradoxical behaviour of heat transfer deterioration was observed in nano-fluid and its dependence on parameters such as particle concentration, material of the particles and geometry of the containing cavity have been investigated.Abstract:
Fluids with nano size solid particles suspended in them have been given the name nano-fluid which in recent studies have shown tremendous promise as heat transfer fluids. However, before suggesting such fluids for applications a thorough knowledge of physical mechanism of heat transfer in such fluids is wanted. The present study deals with one such aspect of natural convection of nano fluids inside horizontal cylinder heated from one end and cooled from the other. An apparently paradoxical behaviour of heat transfer deterioration was observed in the experimental study. Nature of this deterioration and its dependence on parameters such as particle concentration, material of the particles and geometry of the containing cavity have been investigated. The fluid shows characters distinct from that of common slurries.read more
Citations
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Book ChapterDOI
Convection and Boiling
TL;DR: In all practical energy systems with fluids, heat is transferred by convection, a combination of conduction, and fluid advection as mentioned in this paper, which is the process of nanofluid convection that would be of technological interest, not merely conduction.
Journal ArticleDOI
Natural Convection Heat Transfer in a Shell and Helical Coil Heat Exchanger Using non-Newtonian Nanofluids
B. Anil Kumar Naik,A. Venu Vinod +1 more
TL;DR: In this paper, the effect of shell-side nanofluid concentration, tube-side fluid (heating medium) temperature and flow rate parameters on heat transfer has been investigated.
Dissertation
Numerical study of nanoparticle concentration effect on heat transfer enhancement in mini-channel flow
TL;DR: In this paper, the authors focus on the discussion and statistical analysis of thermophysical physical properties in published literature, development of a mathematical correlation for estimating thermophysical and rheological properties, numerical study of heat transfer enhancement, and comparison of results between experimental and theoretical studies of nanofluids.
Journal ArticleDOI
Effects of Preparation Conditions on Thermal and Electrical Properties of Oil-based Nanofluids for Transformer Application
Influence of molecular structure on thermal behavior in vacuum packaged MEMS/NEMS using DSMC
TL;DR: In this paper, the authors investigated the characteristics of micro/nano thermal cavity in rarefied flow regime using direct simulation Monte Carlo (DSMC) method and used a recently developed iterative technique to impose a desired wall heat flux boundary condition in the DSMC solver.
References
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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.
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
Journal ArticleDOI
Measuring Thermal Conductivity of Fluids Containing Oxide Nanoparticles
TL;DR: In this paper, a transient hot-wire method was used to measure the thermal conductivity of a small amount of nanoparticles and the experimental results showed that these nanoparticles have substantially higher thermal conductivities than the same liquids without nanoparticles.
Journal ArticleDOI
Conceptions for heat transfer correlation of nanofluids
Yimin Xuan,Wilfried Roetzel +1 more
TL;DR: In this article, the authors proposed two different approaches for deriving heat transfer correlation of the nanofluid, and investigated the mechanism of heat transfer enhancement of the nano-fluid.
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