Influence of the production method on the thermophysical properties of high temperature molten salt-based nanofluids
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Otros documentos de la autoría: Navarrete Argilés, Nuria; Hernandez, Leonor; VELA GASULLA, ANTONIO FABIAN; Mondragon, Rosa
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
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Título
Influence of the production method on the thermophysical properties of high temperature molten salt-based nanofluidsFecha de publicación
2020-01-28Editor
ElsevierCita bibliográfica
NAVARRETE, Nuria, et al. Influence of the production method on the thermophysical properties of high temperature molten salt-based nanofluids. Journal of Molecular Liquids, 2020, 302: 112570.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0167732219350986Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
The potential use of molten salt-based nanofluids as thermal energy storage material in Concentrated Solar Power plants has gained attention over the last years due to their enhanced storage capacity. The possible ... [+]
The potential use of molten salt-based nanofluids as thermal energy storage material in Concentrated Solar Power plants has gained attention over the last years due to their enhanced storage capacity. The possible effects of the salt-based nanofluid production at industrial scale have not been yet investigated, as this could influence the nanoparticles agglomeration and therefore their thermal and flow properties. Four methods were evaluated for the production of solar salt-based nanofluids containing 1 wt% of silica nanoparticles. The particle size distribution, the stability, the rheological behaviour and the specific heat of the samples were measured. Nanofluids prepared by means of a dry mixing method presented the lowest viscosity, trimodal particle size distribution and lack of stability. The commonly used dissolution method coupled with oven drying in a petri dish as well as the ball milling method presented non-Newtonian behaviour and intermediate values of particle size and stability. The new spray drying method proposed provided a monomodal particle size distribution with high stability but the highest viscosity and shear thickening behaviour. Results suggest that the four methods evaluated are appropriate for specific heat enhancement (up to 21.1%) but a commitment between stability and viscosity has to be achieved. [-]
Proyecto de investigación
Ministerio de Economía y Competitividad (MINECO) (project ENE2016-77694-R) ; Universitat Jaume I (project UJI-B2016-47, pre-doctoral fellowship (Ref. PREDOC/2016/28)) ; Ministerio de Ciencia, Innovación y Universidades, Agencia Estatal de Investigación (AEI) (RED2018-102431-T).Derechos de acceso
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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