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
Thermodynamic evaluation and optimization of a flat plate collector operating with alumina and iron mono and hybrid nanofluids
TL;DR: In this paper, the performance of a flat plate collector operating with both mono and hybrid nanofluids was evaluated and the results showed that the use of alumina-water at a concentration of 0.1% presented a thermal enhancement of 2.16% in the collector, while the hybrid nano-fluids reduced the thermal performance of the collector by 1.79% compared to water.
Journal ArticleDOI
Mixed-convection flow in a lid- driven square cavity filled with a nanofluid with variable properties: effect of the nanoparticle diameter and of the position of a hot obstacle
TL;DR: In this paper, Nanofl uids have attracted attention as an innovation in using heat transfer fl uids in the MIXED-CONVECTION FLOW in a LIDDRIVEN SQUARE CAVITY FILLED with a NANOFLUID with VARIABLE PROPERTIES.
Journal ArticleDOI
Experimental investigation of convective heat transfer using graphene nanoplatelet based nanofluids under turbulent flow conditions
Emad Sadeghinezhad,Mohammad Mehrali,Sara Tahan Latibari,Mehdi Mehrali,Salim Newaz Kazi,C.S. Oon,Hendrik Simon Cornelis Metselaar +6 more
TL;DR: In this article, the authors evaluate the heat transfer characteristics and the pressure drop of a graphene nanoplatelet (GNP) nanofluid in a horizontal stainless steel tube that was subjected to a uniform heat flux at its outer surface.
Journal ArticleDOI
Boiling and two-phase flow phenomena of refrigerant-based nanofluids: Fundamentals, applications and challenges
Lixin Cheng,Lei Liu +1 more
TL;DR: It has been realized that the physical properties have significant effects on the refrigerant-based nanofluid boiling and two-phase flow characteristics but the lack of the accurate knowledge of these physical properties has greatly limited the study in this interdisciplinary field.
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.