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
A Kind of Nanofluid Consisting of Surface-Functionalized Nanoparticles
Xue-Fei Yang,Zhen-Hua Liu +1 more
TL;DR: In this article, a surface functionalization of silica nanoparticles was used to prepare a kind of stable nanofluid, which was achieved by grafting silanes directly to the surface of the nanoparticles in silica solutions.
Journal ArticleDOI
Investigations on electrical conductivity of stabilized water based Al2O3 nanofluids
TL;DR: In this paper, the electrical conductivity of water-based Al2O3 nanofluids with 12-nm diameter particles was measured and the effect of temperature and concentration on electrical conductivities was investigated.
Journal ArticleDOI
Experimental study on the thermal performance and efficiency of a copper made thermosyphon heat pipe charged with alumina–glycol based nanofluids
M.M. Sarafraz,Faramarz Hormozi +1 more
TL;DR: In this article, the authors investigated the thermal performance and thermal efficiency of a thermosyphon heat pipe charged with Al2O3-water/ethyleneglycol, (water-EG) and Al 2O3 -water/diethylenedlycol (water -DEG) nanofluids.
Journal ArticleDOI
Heat transfer enhancement with nanofluids in plate heat exchangers: A comprehensive review
TL;DR: In this paper, the authors examined the utilization of nanofluids with distinct plate heat exchanger (PHE) geometries, and concluded that the operating temperature of nanoparticles plays a key role in the effectiveness of the PHE and heat transfer enhancement.
Journal ArticleDOI
Nanofluids: A New Field of Scientific Research and Innovative Applications
TL;DR: In this article, a review of nanofluid applications in heat transfer engineering is presented, showing verified parametric trends and magnitudes in thermal conductivity and heat transfer enhancement.
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.