Journal ArticleDOI
Investigation on thermophysical properties, convective heat transfer and performance evaluation of ultrasonically synthesized Ag-doped TiO2 hybrid nanoparticles based highly stable nanofluid in a minichannel
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In this paper, Ag-doped TiO2 hybrid nanoparticles were synthesized by ultrasonic assisted method for nanofluid application for heat transfer in minichannel heat exchanger at constant wall temperature condition.Abstract:
Ag-doped TiO2 hybrid nanoparticles have been synthesized by ultrasonic-assisted method for nanofluid application for heat transfer in minichannel heat exchanger at constant wall temperature condition. Prepared nanoparticles were dispersed in water by ultrasonication to form an extremely stable nanofluid. Thermal conductivity of the nanofluid was found to be 1.84 W/mK at 45 ℃ for nanofluid concentration of 0.25 vol%. The overall heat transfer coefficient increased from 1211.71 to 2727.38 W/m2K as the nanofluid concentration increased form 0.01 vol% to 0.1 vol% at Reynolds number of 3480 ± 3. A new correlation for Nusselt number has been proposed. The pressure drop and friction factor of the nanofluids were also advantageously lesser than that of water. The overall performance of the Ag-doped TiO2 hybrid nanoparticles based nanofluid was assessed by comparing the heat transfer with the pumping power and by determining the entropy generation and thus the Bejan number.read more
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Performance evaluation of nanofluids in solar thermal and solar photovoltaic systems: A comprehensive review
TL;DR: In this paper, the properties of nanofluids for solar thermal applications as well as typical nanomaterials and analyses experimental and numerical investigations on solar thermal systems utilizing Nanofluid along with typical experimental setups and calculation methods used for determination of the performance of nanophotonics in the same.
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Bismuth titanate based photocatalysts for degradation of persistent organic compounds in wastewater: A comprehensive review on synthesis methods, performance as photocatalyst and challenges
TL;DR: In this paper, a review of the various synthesis methods of bismuth titanates is discussed, as well as challenges related to fabrication of pure Bismuth Titanates, morphology and development of bissuth titanate photocatalyst are also stated.
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A minireview on nanofluids for automotive applications: current status and future perspectives
TL;DR: In this paper , a review of automotive applications of nanofluids is presented, where the experimental reports on the various properties of nanophotonics along with correlations for nanophluids have been specified.
Journal ArticleDOI
Artificial neural network for prediction of thermal conductivity of rGO–metal oxide nanocomposite-based nanofluids
TL;DR: A four-input artificial neural network model has been presented for the prediction of thermal conductivity of rGO–metal oxide nanocomposite-based nanofluids and agreed well with the experimental data and exhibited an R 2 value of 0.956 for the testing data set.
References
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Journal ArticleDOI
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
TL;DR: 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.
Journal ArticleDOI
The Viscosity of Concentrated Suspensions and Solutions
TL;DR: In this paper, an expression for the viscosity of solutions and suspensions of finite concentration is derived by considering the effect of the addition of one solute-molecule to an existing solution, which is considered as a continuous medium.
Book
Investigations on the theory of the Brownian movement
TL;DR: Alfaro et al. as discussed by the authors conservado en la Biblioteca del Campus de Mostoles de la Universidad Rey Juan Carlos (sign. 530.12 EIN INV).