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Enhancing thermal conductivity of fluids with nano-particles

01 Jan 1995-Vol. 231, pp 99-105
About: The article was published on 1995-01-01 and is currently open access. It has received 7263 citations till now. The article focuses on the topics: Thermal conductivity & Nanoparticle.
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Journal ArticleDOI
TL;DR: In this article, six-lobed absorber tube equipped with combined turbulators was investigated to enhance the productivity of solar unit, hybrid nanoparticles were added in to working fluid.

132 citations

Journal ArticleDOI
TL;DR: In this article, the effect of characteristics and mass concentrations of nanoparticles on the thermal performance in various kinds of heat pipes with different base fluids under various operating conditions has been discussed and the mechanism of enhancement or degradation of heat transfer utilizing nanofluids in the investigated heat pipes has been explained.

131 citations


Cites background from "Enhancing thermal conductivity of f..."

  • ...In 1995, Choi [1] firstly proposed the concept of ‘‘nanofluid’’, which is a fluid with some kinds of nanometer-sized particles suspended into a base liquid....

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Journal ArticleDOI
TL;DR: In this paper, the effects of the radiation parameter, porosity, and the magnetic parameter have been analyzed on temperature distribution and fluid flow streamlines and also, on the local and average Nusselt numbers.
Abstract: Investigation of fluid behavior in a cavity enclosure has been a significant issue from the past in the field of fluid mechanics. In the present study, hydrothermal evaluation of hybrid nanofluid with a water–ethylene glycol (50–50%) as the base fluid which contains MoS2–TiO2 hybrid nanoparticles, in an octagon with an elliptical cavity in the middle of it, has been performed. In this problem, the effects of the radiation parameter, porosity, and the magnetic parameter have been analyzed on temperature distribution and fluid flow streamlines and also, on the local and average Nusselt numbers. The governing equations have been solved by the finite element method (FEM). As a novelty, the Taguchi method has been utilized for test design. Further, the response surface method (RSM) has been applied to achieving the optimum value of the involved parameters. The obtained results illustrate that with an augment in the Rayleigh number from 10 to 100, the average Nusselt number will improve by about 61.82%. Additionally, regarding the correlation, it is indeed transparent that the Rayleigh number has the most colossal contribution comparing other factors on the achieved equation, by about 61.88%.

131 citations

Journal ArticleDOI
TL;DR: In this article, the effect of different parameters such as flow Reynolds number, flattened tube internal height and nanofluid particle concentration on heat transfer coefficient and pressure drop of the flow is studied.

131 citations

Journal ArticleDOI
TL;DR: In this article, the authors explored the heat transfer and pressure drop characteristics in a chevron-type corrugated plate heat exchanger using CeO 2 /water nanofluid as the coolant.

131 citations