In-line measurement of absorbed solar irradiance using nanofluids

In this paper a novel technique for the in-line evaluation of the absorption rate of solar radiation by nanofluids in a volumetric solar receiver is presented. This method allows to experimentally investigate the optical behaviour of a nanofluid when circulating in a volumetric solar receiver under...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-11, Vol.2116 (1), p.12118
Main Authors: Zanetti, E, Berto, A, Meneghetti, M, Del Col, D
Format: Article
Language:English
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Summary:In this paper a novel technique for the in-line evaluation of the absorption rate of solar radiation by nanofluids in a volumetric solar receiver is presented. This method allows to experimentally investigate the optical behaviour of a nanofluid when circulating in a volumetric solar receiver under non-concentrated solar irradiance and it is based on the combined use of pyranometers. This technique is used in the present work to study the absorption capability of a Single-Wall-Carbon-NanoHorns (SWCNHs) based nanofluid. From the experiments, it can be seen that after some hours of circulation, the absorption rate of the nanofluid decreases, due to a loss of nanoparticles in the suspension.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2116/1/012118