Experimental study of different coatings on silica sand in a directly irradiated fluidised bed: Thermal behaviour and cycling analysis
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Other documents of the author: García-Plaza, J.; Díaz, Minerva; Mondragon, Rosa; Hernandez, Leonor; Calderon, Alejandro; Barreneche, Camila; Canales-Vázquez, J.; Fernandez, Ana Ines; Almendros-Ibáñez, José A.
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INVESTIGACIONMetadata
Title
Experimental study of different coatings on silica sand in a directly irradiated fluidised bed: Thermal behaviour and cycling analysisAuthor (s)
Date
2022-11-25Publisher
ElsevierISSN
1359-4311; 1873-5606Bibliographic citation
García-Plaza, J., Díaz-Heras, M., Mondragón, R., Hernández, L., Calderón, A., Barreneche, C., Canales-Vázquez, J., Fernández, A.I., Almendros-Ibáñez, J. A. Experimental study of different coatings on silica sand in a directly irradiated fluidised bed: Thermal behaviour and cycling analysis. Appl. Therm. Eng., 217 (2022), Article 119169. https://doi.org/10.1016/j.applthermaleng.2022.119169Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S1359431122010973Version
info:eu-repo/semantics/acceptedVersionSubject
Abstract
The present work shows the experimental results obtained with sand particles, which where coated to increase the thermal absorptivity for CSP applications. The particles were tested in a lab-scale fluidised bed with ... [+]
The present work shows the experimental results obtained with sand particles, which where coated to increase the thermal absorptivity for CSP applications. The particles were tested in a lab-scale fluidised bed with concentrated irradiation on the top. The experimental results indicates that two of the three coatings tested, based on graphite and carbon black, worked properly and absorbed between 30 and 40% more energy than raw sand due to the higher thermal absorptivity. Both coatings were also experimentally tested during 10 cycles of charging/discharging without apparent deterioration of their thermal properties. Sand coated with graphite exhibited colour change, from an initial dark black to a greyish tone that did not have an impact on the particles thermal response.
The extrapolation of the results observed at lab-scale, to the maximum expected temperatures in new generation of CSP plants with solid particles, up to 1250 K, shows that coated particles may enhance the energy effectively stored in the bed by 60–80% compared to raw sand. [-]
Is part of
Applied Thermal Engineering, 2022, vol. 217Funder Name
Ministerio de Ciencia, Innovación y Universidades | Ministerio de Economía y Competitividad (España) | Generalitat de Catalunya | Junta de Comunidades de Castilla-La Mancha | Generalitat Valenciana | Universitat Jaume I | Universidad de Castilla-La Mancha
Funder ID
http://dx.doi.org/10.13039/501100011033
Project code
MICIU/ICTI2017-2020/ RTI2018-093849-B-C32 | ENE2016-78908-R | DIOPMA 2017 SGR 0118 | SBPLY/17/180501/000412 | PROMETEO/2020/029 | UJI-B2020-32 | RED2018-102431-T | 2021-GRIN-31341 | 2021-GRIN-30978
Project title or grant
Metodología para el análisis de tecnologías de almacenamiento de energía térmica hacia una economía circular
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Copyright © Elsevier Ltd. All rights reserved.
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