Enhanced sensible heat storage capacity of nanofluids by improving the photothermal conversion performance with direct radiative absorption of solar energy

Kazaz, O., Karimi, N. , Kumar, S. , Falcone, G. and Paul, M. C. (2023) Enhanced sensible heat storage capacity of nanofluids by improving the photothermal conversion performance with direct radiative absorption of solar energy. Journal of Molecular Liquids, 372, 121182. (doi: 10.1016/j.molliq.2022.121182)

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The paper numerically investigates the fluid flow and radiative heat transfer behaviour of water-based mono and hybrid nanofluids in a direct absorption solar collector under solar irradiation boundary conditions. The effects of radiation on the heat and flow performance with operating parameters such as the type of nanoparticles, volume concentrations of nanoparticles, nanoparticle size and type of base fluids are investigated. The numerical results reveal that uniform temperature distribution is obtained with an incident radiation of 1029.81 W/m2 and that the collector performance increases with the addition of nanoparticles owing to their higher radiative properties. While the temperature gain for pure water is 5.58 K, it is estimated to be 48.72 K and 51.32 K with the volume concentrations of 70 ppm and 100 ppm for Al+Al2O3 and Al+Graphite nanofluids, respectively. Moreover, the thermal performance of the collector is positively affected by increasing the size of nanoparticle. For example, for Al+Al2O3 nanofluids at 10 ppm volume concentration, the temperature increase is 37.12 K and 42.02 K at 10 nm and 50 nm, respectively. Therefore, hybrid nanofluids can be considered as effective heat transfer fluids to increase the solar radiation absorbability, and subsequently, improve the efficiency and performance of the direct absorption solar collector.

Item Type:Articles
Additional Information:The first author would like to thank the Turkish Ministry of National Education, Republic of Turkey for funding his PhD research study at the University of Glasgow.
Glasgow Author(s) Enlighten ID:Paul, Professor Manosh and Falcone, Professor Gioia and KAZAZ, OGUZHAN and Kumar, Professor Shanmugam and Karimi, Dr Nader
Creator Roles:
Kazaz, O.Conceptualization, Methodology, Software, Validation, Investigation, Formal analysis, Visualization, Writing – original draft, Writing – review and editing
Karimi, N.Conceptualization, Supervision, Writing – review and editing
Kumar, S.Supervision, Writing – review and editing
Falcone, G.Supervision, Writing – review and editing
Paul, M. C.Conceptualization, Supervision, Writing – review and editing, Project administration, Resources, Funding acquisition
Authors: Kazaz, O., Karimi, N., Kumar, S., Falcone, G., and Paul, M. C.
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Journal of Molecular Liquids
ISSN (Online):1873-3166
Published Online:02 January 2023
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Journal of Molecular Liquids 372:121182
Publisher Policy:Reproduced under a Creative Commons License

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