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
Journal ArticleDOI
Magneto rotating flow of hybrid nanofluid with entropy generation.
TL;DR: A theoretical attempt on MHD entropy optimized viscous hybrid nanomaterial flow between two parallel plates finds that velocity of material particles increase against larger estimations of rotation parameter and temperature declines versus larger Prandtl and Eckert numbers.
Journal ArticleDOI
Thermal performance of a heat pipe with nanoparticles coated wick
TL;DR: In this article, the thermal performance of a heat pipe operated with nanoparticle coated wick was investigated at three different heat inputs and it was found that the decrement in total resistance is 19, 15, and 14% at 100,150 and 200,W respectively.
Journal ArticleDOI
Thermal performance and operational attributes of the startup characteristics of flat-shaped heat pipes using nanofluids
TL;DR: In this article, the thermal performance, transient behavior and operational start-up characteristics of flat-shaped heat pipes using nanofluids are analyzed in a comprehensive analytical model, which accounts in detail the heat transfer characteristics within the pipe wall and the wick within the condensation and evaporation sections.
Journal ArticleDOI
Thermal performance augmentation using water based Al2O3-gamma nanofluid in a horizontal shell and tube heat exchanger under forced circulation
TL;DR: In this article, the effect of using Al2O3-water nanofluid on thermal performance of a commercial shell and tube heat exchanger with segmental baffles is assessed experimentally.
Journal ArticleDOI
A novel application for energy efficiency improvement using nanofluid in shell and tube heat exchanger equipped with helical baffles
TL;DR: In this paper, a two-phase mixture model was used for modeling the convective heat transfer coefficient and the pressure drop in a shell-and-tube heat exchanger equipped with helical baffles.
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.