Journal ArticleDOI
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
Reads0
Chats0
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
More filters
Book ChapterDOI
A Review of Heat Transfer in Nanofluids
Sarit K. Das,Stephen U. S. Choi +1 more
TL;DR: Nanofluid is a new class of nanotechnology-based heat transfer fluids engineered by dispersing nanometer-sized particles with typical length scales on the order of 1-100nm in traditional heat transfer fluid.
Journal ArticleDOI
Specific heat control of nanofluids: A critical review
Hamed Riazi,Thomas Murphy,Grant B. Webber,Rob Atkin,S. Saeed Mostafavi Tehrani,Robert A. Taylor +5 more
TL;DR: In this article, the authors provide a comprehensive review of recent, albeit sometimes contrary, nanofluid specific heat studies, and provide insights into the range and magnitude of specific heat changes.
Journal ArticleDOI
Comparative study between metal oxide nanopowders on thermal characteristics of nanofluid flow through helical coils
TL;DR: In this article, an experimental comparison of heat transfer behavior between metal oxide nanofluid flows through helical coiled tube with uniform heat flux boundary condition was conducted. And the experimental and predicted results of Nusselt number and pressure drop held reasonable agreement.
Journal ArticleDOI
Synthesis and characterization of TiO2-water nanofluids with different surfactants
TL;DR: In this article, a comprehensive characterization of viscosity, thermal conductivity, surface tension and pH of TiO 2 -water nanofluid is carried out to investigate the effects of both temperature and solid volume fraction on these thermo-physical properties.
Journal ArticleDOI
Thermal conductivity enhancement of nanofluids in conjunction with electrical double layer (EDL)
Jung-Yeul Jung,Jung Yul Yoo +1 more
TL;DR: In this paper, a novel expression for the thermal conductivity of nanofluids is proposed, which incorporates the kinetic theory to describe the contribution of the Brownian motion of the nanoparticles with a more realistic definition of the mean free path.
References
More filters
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.