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Simplified model of a dual-media molten-salt thermocline tank with a multiple layer wall

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.contributor.authorFernández Torrijos, María
dc.contributor.authorSobrino Fernández, Celia
dc.contributor.authorAlmendros Ibáñez, José Antonio
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (España)es
dc.date.accessioned2020-12-02T17:02:23Z
dc.date.available2020-12-02T17:02:23Z
dc.date.issued2017-07-15
dc.description.abstractThermal ratcheting is a critical phenomenon associated with the cyclic operation of dual-media thermocline tanks in solar energy applications. To study this phenomenon, it is necessary to develop a comprehensive model of a thermocline tank that includes both the heterogeneous filler region and the composite tank wall. Because CFD models require a high computational cost to simulate a thermocline tank considering transient state operation, a simplified dual-phase model that includes the unsteady heat transfer through a multiple layer wall has been developed. The filler region consists of a rock bed with interstitial molten salt, and the tank wall is composed of a steel shell with two layers of insulation (firebrick and ceramic). In this simplified model, the fluid flow inside the tank is considered to be one-dimensional along the tank axis direction, whereas the heat conduction in the composite wall is considered to be two-dimensional. Therefore, a convective heat transfer coefficient from the bed to the wall is necessary to couple the molten salt flow with the heat transfer in the tank shell. In this work, the effects of both convective heat transfer from the bed to the wall and molten salt flow rate on the time-dependent thermal response of both the steel shell and molten salt have been analyzed. The simplified model is able to predict the temperatures of the molten salt, filler material and layer wall as well as the mechanical stress in the tank shell.en
dc.description.sponsorshipThis work was partially funded by the Ministerio de Educación,Cultura y Deporte para la Formación de Profesorado Universitario(FPU-04941) and the Ministerio de Economía y Competitividad (Project ENE2014-54942-R) of the Spanish Governmenten
dc.format.extent58
dc.identifier.bibliographicCitationFernández-Torrijos, M.; Sobrino, C.; Almendros-Ibáñez, J.A. (2017). Simplified model of a dual-media molten-salt thermocline tank with a multiple layer wall, Solar Energy, v. 151, pp. 146-161en
dc.identifier.doihttps://doi.org/10.1016/j.solener.2017.04.072
dc.identifier.issn0038-092X
dc.identifier.publicationfirstpage146
dc.identifier.publicationlastpage161
dc.identifier.publicationtitleSolar Energyes
dc.identifier.publicationvolume151
dc.identifier.urihttps://hdl.handle.net/10016/31519
dc.identifier.uxxiAR/0000020159
dc.language.isoeng
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. ENE2014-54942-R
dc.relation.projectIDGobierno de España. FPU-04941
dc.rights© 2017 Elsevier Ltd.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.ecienciaIngeniería Industriales
dc.subject.otherThermal Energy Storageen
dc.subject.otherMolten-Salt Thermoclineen
dc.subject.otherThermal Ratchetingen
dc.titleSimplified model of a dual-media molten-salt thermocline tank with a multiple layer wallen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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