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Comparative study of carbon nanosphere and carbon nanopowder on viscosity and thermal conductivity of nanofluids
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Metadata
Document Title
Comparative study of carbon nanosphere and carbon nanopowder on viscosity and thermal conductivity of nanofluids
Author
Ba T.L.,Bohus M.,Lukács I.E.,Wongwises S.,Gróf G.,Hernadi K.,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 Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangmod, Bangkok, 10140, Thailand; National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand; Centre for Energy Research, Konkoly-Thege Miklós út 29-33, Budapest, 1121, Hungary; Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla tér 1, Szeged, 6720, Hungary; Institute of Physical Metallurgy, Metal Forming and Nanotechnology, University of Miskolc, Miskolc-Egyetemváros, 3515, Hungary
Type
Article
Source Title
Nanomaterials
ISSN
20794991
Year
2021
Volume
11
Issue
3
Page
1-19
Open Access
All Open Access, Gold, Green
Publisher
MDPI AG
DOI
10.3390/nano11030608
Abstract
A comparative research on stability, viscosity (µ), and thermal conductivity (k) of carbon nanosphere (CNS) and carbon nanopowder (CNP) nanofluids was performed. CNS was synthesized by the hydrothermal method, while CNP was provided by the manufacturer. Stable nanoflu-ids at high concentrations 0.5, 1.0, and 1.5 vol% were prepared successfully. The properties of CNS and CNP nanoparticles were analyzed with Fourier-transform infrared spectroscopy (FT-IR), scan-ning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), specific surface area (SBET), X-ray powder diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA), and energy dispersive X-ray analysis (EDX). The CNP nanofluids have the highest k enhancement of 10.61% for 1.5 vol% concentration compared to the base fluid, while the CNS does not make the thermal conductivity of nanofluids (knf) significantly higher. The studied nanofluids were Newto-nian. The relative µ of CNS and CNP nanofluids was 1.04 and 1.07 at 0.5 vol% concentration and 30 °C. These results can be explained by the different sizes and crystallinity of the used nanoparticles. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keyword
Carbon nanopowder | Carbon nanosphere | Nanofluids | Thermal conductivity | Viscosity
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY
Rights
Author
Publication Source
Scopus