New coloured coatings to enhance silica sand absorbance for direct particle solar receiver applications
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Otros documentos de la autoría: Gimeno Furió, Alexandra; Hernandez, Leonor; Martinez Cuenca, Raul; Mondragon, Rosa; VELA GASULLA, ANTONIO FABIAN; Cabedo, Luis; Barreneche, Camila; Iacob, Mihail
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Título
New coloured coatings to enhance silica sand absorbance for direct particle solar receiver applicationsAutoría
Fecha de publicación
2020-06-30Editor
ElsevierISSN
0960-1481; 1879-0682Cita bibliográfica
GIMENO-FURIO, A., et al. New coloured coatings to enhance silica sand absorbance for direct particle solar receiver applications. Renewable Energy, 2020, vol. 152Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0960148120300586Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
New systems using solid particles for solar energy capturing, heat transfer and thermal
energy storage have been proposed and analysed in direct particle solar receivers. In
this work, black coloured silica sand was ... [+]
New systems using solid particles for solar energy capturing, heat transfer and thermal
energy storage have been proposed and analysed in direct particle solar receivers. In
this work, black coloured silica sand was investigated as a possible solid particle for such
combined systems. Two different methods based on a carbon coating approach were
implemented to black colour the initial material to improve their solar absorption
characteristics. The morphology of the raw and coloured sands was analysed by
scanning electron microscopy (SEM), particle size characterisation and porosity
measurements. The coating of the black-coloured silica sands was evaluated by
thermogravimetry. Solar absorption was characterised in a double-beam UV-VIS
spectrophotometer combined with an integrating sphere, and with enhancements of
approximately 100%, found for both coloured sands. The thermal storage and heat
transfer capabilities of the initial and coated sands were measured at different
temperatures. Some improvements in the specific heat capacity and reductions in
thermal conductivity due to porosity changes were observed. [-]
Publicado en
Renewable Energy, 2020, vol. 152Proyecto de investigación
This work has been partially funded by the Spanish governmentENE2015-64117-C5-2-R (MINECO/FEDER). The authors would liketo thank the Catalan Government for the quality accreditation givento their research group DIOPMA (2017 SGR118). LH and AGF ac-knowledges thefinancial support from the Generalitat Valenciana(Project: PROMETEU/2019/079) and from Pla de Promoci odelaInvestigaci oal’UJI (Project: UJI-B2016-47). The research waspartially supported by EU COST Action CA15119 Nanouptake“Overcoming Barriers to Nanofluids Market Uptake”. CB and MJacknowledges EU COST Action CA15119 for their STMS grants.Derechos de acceso
info:eu-repo/semantics/openAccess
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