Journal ArticleDOI
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
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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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Simulation of copper-water nanofluid in a microchannel in slip flow regime using the lattice Boltzmann method
Arash Karimipour,Alireza Hossein Nezhad,Annunziata D’Orazio,Mohammad Hemmat Esfe,Mohammad Reza Safaei,Ebrahim Shirani +5 more
TL;DR: In this article, the effects of wall slip velocity and temperature jump of the nanofluid were studied for the first time by using lattice Boltzmann method, and the results indicated that LBM can be used to simulate forced convection for the nano-fluid micro flows.
Journal ArticleDOI
Experimental investigation of turbulent convective heat transfer of dilute γ-Al2O3/water nanofluid inside a circular tube
S.M. Fotukian,M. Nasr Esfahany +1 more
TL;DR: In this article, the volume fraction of nanoparticles in the base fluid was less than 0.2% and the authors showed that the addition of small amounts of nanoparticle to the base fluids augmented heat transfer remarkably.
Journal ArticleDOI
Thermal performance of closed two-phase thermosyphon using nanofluids
TL;DR: In this article, the authors investigated the overall thermal resistance of closed two-phase thermosyphon using pure water and various water based nanofluids (of Al2O3, CuO and laponite clay) as working fluids.
Journal ArticleDOI
Experimental investigation of convective heat transfer augmentation for car radiator using ZnO–water nanofluids
TL;DR: In this paper, water-based nanofluids have been used to enhance the heat transfer performance of a car radiator by adding ZnO nanoparticles to base fluid in different volumetric concentrations (0.01, 0.08), 0.2% and 0.3%).
Journal ArticleDOI
The onset of convection in a horizontal nanofluid layer of finite depth
TL;DR: In this paper, a linear stability analysis for the onset of natural convection in a horizontal nanofluid layer is presented, which incorporates the effects of Brownian motion and thermophoresis.
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.
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Thermal Conductivity of Heterogeneous Two-Component Systems
R. L. Hamilton,O. K. Crosser +1 more
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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.