Journal ArticleDOI
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
TLDR
In this article, an innovative new class of heat transfer fluids can be engineered by suspending metallic nanoparticles in conventional heat-transfer fluids, which are expected to exhibit high thermal conductivities compared to those of currently used heat transfer fluid, and they represent the best hope for enhancing heat transfer.Abstract:
Low thermal conductivity is a primary limitation in the development of energy-efficient heat transfer fluids that are required in many industrial applications. In this paper we propose that an innovative new class of heat transfer fluids can be engineered by suspending metallic nanoparticles in conventional heat transfer fluids. The resulting {open_quotes}nanofluids{close_quotes} are expected to exhibit high thermal conductivities compared to those of currently used heat transfer fluids, and they represent the best hope for enhancement of heat transfer. The results of a theoretical study of the thermal conductivity of nanofluids with copper nanophase materials are presented, the potential benefits of the fluids are estimated, and it is shown that one of the benefits of nanofluids will be dramatic reductions in heat exchanger pumping power.read more
Citations
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Journal ArticleDOI
Magnetic field effects on free convection flow of a nanofluid past a vertical semi-infinite flat plate
TL;DR: In this paper, the authors discuss similarity reduction for problems of magnetic field effects on free convection flow of a nanofluid past a semi-infinite vertical flat plate.
Journal ArticleDOI
Numerical study of convective heat transfer of nanofluids in a circular tube two-phase model versus single-phase model
TL;DR: In this paper, the effect of nanoparticle sources, nanoparticle volume fraction and nanofluid Peclet number on heat transfer rate was investigated using a CFD 1 approach.
Journal ArticleDOI
Eulerian–Eulerian two-phase numerical simulation of nanofluid laminar forced convection in a microchannel
TL;DR: In this paper, an Eulerian two-fluid model is considered to simulate the nanofluid flow inside the microchannel and the governing mass, momentum and energy equations for both phases are solved using the finite volume method.
Journal ArticleDOI
A review on how the researchers prepare their nanofluids
TL;DR: In this paper, the available data for the zeta potential as a function of pH is discussed and various types of nanoparticles with different base fluids are investigated, including metallic and nonmetallic nanoparticles.
Journal ArticleDOI
Heat transfer and flow behaviour of aqueous suspensions of titanate nanotubes (nanofluids)
Haisheng Chen,Haisheng Chen,Wei Yang,Yurong He,Yulong Ding,Lingling Zhang,Chunqing Tan,Alexei A. Lapkin,Dmitry V. Bavykin +8 more
TL;DR: In this article, Titanate nanotubes of an aspect ratio of ~ 10 are synthesized, characterised and dispersed in water to form stable nanofluids containing 0.5, 1.0 and 2.5 wt.% of the nanotsubes.
References
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Book
Introduction to Heat Transfer
TL;DR: In this article, the physical concepts and methodologies of heat and mass transfer are explained for advanced undergraduate engineering majors, using a systematic method for problem solving and discusses the relationship of heat transfer to many important practical applications through examples and problems.
Journal ArticleDOI
Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles
Bock Choon Pak,Young I. Cho +1 more
TL;DR: In this article, the authors used a Brookfield rotating viscometer to measure the viscosities of the dispersed fluids with γ-alumina (Al2O3) and titanium dioxide (TiO2) particles at a 10% volume concentration.
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.