Jin, X, Lin, G, Zeiny, A et al. (3 more authors) (2019) Solar photothermal conversion characteristics of hybrid nanofluids: An experimental and numerical study. Renewable Energy, 141. pp. 937-949. ISSN 0960-1481
Abstract
In this work, the Fe3O4, Cu and Au with different concentrations and the hybrid nanofluids were prepared and characterized to enhance the solar photothermal conversion performance based on the direct absorption concept. An extensive experimental study was carried out with different sample nanofluids under a solar simulator. The experiment was first conducted with Au nanofluid in three cases to investigate the effect of different test conditions, and the test condition where the simulated sunlight was absorbed by the sample nanofluid only once with minimum heat loss to the surroundings was determined for later research. Based on the experimental results, below conclusions have been reached: 1) the solar energy absorption performance of nanofluids with plasmonic nanomaterials, i.e., Au or Cu, is much better than that of nanofluids with non-plasmonic nanomaterials, i.e., Fe3O4 and DI water, due to the effect of localized surface plasmon resonance; 2) the larger the concentration, the higher the solar energy absorption efficiency, but the increasing rate of the absorption efficiency slows down gradually with the increase of the concentration; 3) a numerical method to predict photothermal conversion efficiency of nanofluid under solar radiation has been proposed; 4) the novel idea of employing hybrid nanofluid to enhance the solar absorption performance has been experimentally and numerical validated, which can enhance the solar photothermal conversion when mixing two nanofluids with different absorption peaks, and there is an optimal mixing volume fraction for hybrid nanofluid.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Renewable Energy. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Solar energy; Nanofluids; Direct absorption; Hybrid nanofluid; Absorption efficiency |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number EU - European Union 626576 |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Jan 2020 14:35 |
Last Modified: | 05 Apr 2020 00:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.renene.2019.04.016 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155421 |
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