Experimental study of honeycomb SiCSi under highly concentrated solar flux: Evolution of its thermo-radiative properties

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dc.contributor.author Rodríguez Sánchez, María de los Reyes
dc.contributor.author Santana Santana, Domingo José
dc.contributor.author Olalde, G.
dc.date.accessioned 2021-04-20T08:35:49Z
dc.date.available 2021-04-20T08:35:49Z
dc.date.issued 2016-10
dc.identifier.bibliographicCitation Rodriguez-Sanchez, M. R., Santana, D. & Olalde, G. (2016). Experimental study of honeycomb SiCSi under highly concentrated solar flux: Evolution of its thermo-radiative properties. Solar Energy Materials and Solar Cells, 155, pp. 253–263.
dc.identifier.issn 0927-0248
dc.identifier.uri http://hdl.handle.net/10016/32423
dc.description.abstract The material that is used in solar receivers is subjected to intense cyclic thermal stresses and extreme temperatures, which are directly dependent on the intermittence of the solar resource. These factors accelerate the ageing mechanisms and reduce the durability of the receivers because of a reduction of their thermal performance. This study presents guidelines to study the thermo-radiative properties of an absorber material that is subjected to a highly concentrated solar flux. The material was a square honeycomb SiCSi structure that is typically used in volumetric air receivers. Accelerated ageing tests were performed by means of crashing thermal treatments, in which the modulus and period of the incident flux and the boundary conditions of the material were varied. The reflectivity and absorptivity of the material were experimentally characterized before and after the thermal treatments. The measurements were performed using two different reflectometers, one monochromatic and one in the solar band; the latter can measure at ambient temperature or high temperature that is representative of the operational conditions (400-700 degrees C). However, only the solar band reflectometer working at high temperature was able to detect the evolution of the thermo-radiative properties of the material, which highlights the important role of the temperature and the wavelength. Furthermore, the thermal treatments in which the samples were water-cooled and in which the solar flux was medial more quickly accelerated the ageing mechanism of the material and reduced its absorptivity.
dc.description.sponsorship The authors acknowledge the financial support of the research programme of the Universidad Carlos III de Madrid, 2015, which made this study possible through a mobility grant. Moreover, this work was supported by the French "Investments for the future" programme, which is managed by the National Agency for Research under contract ANR-10-LABX-22-01 by Labex SOLSTICE and by the Spanish government under the project ENE2012-34255.
dc.format.extent 11
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2016 Elsevier B.V.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Volumetric solar receiver
dc.subject.other SiCSi
dc.subject.other Reflectivity
dc.subject.other Absorptivity
dc.subject.other Ageing
dc.subject.other Durability
dc.title Experimental study of honeycomb SiCSi under highly concentrated solar flux: Evolution of its thermo-radiative properties
dc.type article
dc.subject.eciencia Energías Renovables
dc.identifier.doi https://doi.org/10.1016/j.solmat.2016.06.032
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2012-34255
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 253
dc.identifier.publicationlastpage 263
dc.identifier.publicationtitle Solar Energy Materials and Solar Cells
dc.identifier.publicationvolume 155
dc.identifier.uxxi AR/0000018209
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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