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Experimental investigation of rheological properties and thermal conductivity of SiO2–P25 TiO2 hybrid nanofluids
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Metadata
Document Title
Experimental investigation of rheological properties and thermal conductivity of SiO2–P25 TiO2 hybrid nanofluids
Author
Le Ba T.,Várady Z.I.,Lukács I.E.,Molnár J.,Balczár I.A.,Wongwises S.,Szilágyi I.M.
Name from Authors Collection
Affiliations
Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Muegyetem rakpart 3., Budapest, 1111, Hungary; Centre for Energy Research, Institute for Technical Physics and Materials Science, Hungarian Academy of Sciences, Konkoly Thege M. út 29-33, Budapest, 1121, Hungary; Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Muegyetem rakpart 3., Budapest, 1111, Hungary; Institute of Materials Engineering, Faculty of Engineering, University of Pannonia, Egyetem út 10, Veszprém, 8200, Hungary; Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangmod, Bangkok, 10140, Thailand; National Science and Technology Development Agency (NSTDA), Khlong Luang, Pathum Thani 12120, Thailand
Type
Article
Source Title
Journal of Thermal Analysis and Calorimetry
ISSN
13886150
Year
2021
Volume
146
Issue
1
Page
493-507
Open Access
All Open Access, Hybrid Gold
Publisher
Springer Science and Business Media B.V.
DOI
10.1007/s10973-020-10022-4
Abstract
Over many years, great efforts have been made to develop new fluids for heat transfer applications. In this paper, the thermal conductivity (TC) and viscosity of SiO2–P25 TiO2 (SiO2–P25) hybrid nanofluids were investigated for different nanoparticle volume concentrations (0.5, 1.0 and 1.5 vol%) at five various temperatures (20, 30, 40, 50 and 60 °C). The mixture ratio (SiO2:P25) in all prepared hybrid nanofluids was 1:1. Besides, pure SiO2, P25 nanofluids were prepared with the same concentrations for comparison with the hybrid nanofluids. The base fluid used for the preparation of nanofluids was a mixture of deionized water and ethylene glycol at a ratio of 5:1. Before preparing the nanofluids, the nanoparticles were analyzed with energy-dispersive X-ray analysis, scanning electron microscope, X-ray powder diffraction, and Fourier transform infrared spectroscopy. The zeta potentials of the prepared nanofluids except SiO2 nanofluids were above 30 mV. These nanofluids were visually observed for stability in many days. The TC enhancement of the hybrid nanofluid was higher than the pure nanofluid. In particular, with 1.0 vol% concentration, the maximum enhancement of SiO2, P25 and SiO2–P25 nanofluids were 7.5%, 9.9% and 10.5%, respectively. The rheology of the nanofluids was Newtonian. The viscosity increment of SiO2, P25 and hybrid nanofluids were 19%, 32% and 24% with 0.5 vol% concentration. A new correlation was developed for the TC and dynamic viscosity of SiO2–P25 hybrid nanofluid. © 2020, The Author(s).
Keyword
Base fluid | Nanofluids | Silicon dioxide | Thermal conductivity | titanium dioxide | Viscosity
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY
Rights
Author
Publication Source
Scopus