Flow patterns of external solar receivers

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dc.contributor.author Rodríguez Sánchez, María de los Reyes
dc.contributor.author Sánchez González, Alberto
dc.contributor.author Marugán Cruz, Carolina
dc.contributor.author Santana Santana, Domingo José
dc.date.accessioned 2021-04-19T10:52:45Z
dc.date.available 2021-04-19T10:52:45Z
dc.date.issued 2015-12
dc.identifier.bibliographicCitation Rodriguez-Sanchez, M. R., Sanchez-Gonzalez, A., Marugan-Cruz, C. & Santana, D. (2015). Flow patterns of external solar receivers. Solar Energy, 122, pp. 940–953.
dc.identifier.issn 0038-092X
dc.identifier.uri http://hdl.handle.net/10016/32414
dc.description.abstract A The design of the flow paths in solar external-receivers with molten salt as heat transfer fluid is critical to increase the Solar Power Tower (SPT) availability and for a reliable receiver operation. The parameters that affect mostly the start-up and shut-down of the receiver are the Direct Normal Irradiance (DNI) and the sun elevation angle. Furthermore, the feed-pump system requirements and the limiting turbulent Reynolds number also affect the number of operational hours to assure safe receiver operation. Under nominal conditions of operation the most critical factors are the maximum film temperature and the thermal stresses. In this study, the receiver performance has been analysed during its annual operation. Different flow pattern configurations have been simulated including single or multiple flow paths with or without crossovers. The selection of the optimal configuration has been based on increasing the receiver availability and the global efficiency of the SPT. In the light of the results, during start-up and shut-down the total solar flux intercepted by both flow paths should be approximately the same. However, close to midday to maintain high levels of thermal efficiency a good distribution of the solar flux (peak flux close to the northern panels) is more important. The most efficient and reliable flow path configuration is a receiver with two modes of operation: a crossover just before the midpoint of the path when the solar flux is low and North South asymmetric or no crossover when the DNI is high and the peak flux is still asymmetric.
dc.format.extent 14
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2015 Elsevier Ltd.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Solar External Receiver
dc.subject.other Molten salt
dc.subject.other Flow pattern
dc.subject.other Crossover
dc.subject.other Convection heat transfer
dc.subject.other Flux density
dc.subject.other Design
dc.subject.other Heliostat
dc.subject.other Plants
dc.title Flow patterns of external solar receivers
dc.type article
dc.identifier.doi https://doi.org/10.1016/j.solener.2015.10.025
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2012-34255
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 940
dc.identifier.publicationlastpage 953
dc.identifier.publicationtitle Solar Energy
dc.identifier.publicationvolume 122
dc.identifier.uxxi AR/0000017591
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Ingeniería Térmica y de Fluidos
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticos
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