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
Modeling of thermal conductivity of ZnO-EG using experimental data and ANN methods
Mohammad Hemmat Esfe,Seyfolah Saedodin,Ali Naderi,Ali Alirezaie,Arash Karimipour,Somchai Wongwises,Marjan Goodarzi,Mahidzal Dahari +7 more
TL;DR: In this article, the thermal conductivity of ZnO-EG nanofluid has been investigated experimentally, and an experimental model has been proposed as a function of solid concentration and temperature.
Journal ArticleDOI
Synthesized CuFe2O4/SiO2 nanocomposites added to water/EG: Evaluation of the thermophysical properties beside sensitivity analysis & EANN
Arash Karimipour,Seyed Amin Bagherzadeh,Marjan Goodarzi,Abdulwahab A. Alnaqi,Mehdi Bahiraei,Mohammad Reza Safaei,Mostafa Safdari Shadloo +6 more
TL;DR: In this paper, a new nanocomposite material of CuFe2O4 (copper ferrite) nanoparticles coated by SiO2 is synthesized, and this newly generated nanocompositionite is dispersed in water/ethylene glycol (60:40) to make a new homogeneous nanofluid in order to avoid settling and agglomeration.
Journal ArticleDOI
Review of thermo-physical properties, wetting and heat transfer characteristics of nanofluids and their applicability in industrial quench heat treatment
G. Ramesh,Narayan K. Prabhu +1 more
TL;DR: The thermo-physical properties, wetting and boiling heat transfer characteristics of nanofluids are reviewed and discussed and would be extremely useful for exploiting them as quench media for industrial heat treatment.
Journal ArticleDOI
An experimental investigation on sunlight absorption characteristics of silver nanofluids
TL;DR: In this paper, plasmonic silver nanoparticles were added to a working fluid to improve its solar thermal conversion efficiency, and the efficiency of the silver nanofluid is 84.61% after 5min irradiation with a mass concentration of 80.94% in simulated and natural sunlight.
Journal ArticleDOI
Comparative assessment of single and two-phase models for numerical studies of nanofluid turbulent forced convection
TL;DR: In this article, numerical predictions by single-phase and three different two-phase models (volume of fluid, mixture, Eulerian) of nanofluid turbulent forced convection in a horizontal tube with uniform wall heat flux are evaluated by comparison with two different sets of experimental data.
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.