Publication:
Flow patterns of external solar receivers

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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.authorRodríguez Sánchez, María de los Reyes
dc.contributor.authorSánchez González, Alberto
dc.contributor.authorMarugán Cruz, Carolina
dc.contributor.authorSantana Santana, Domingo José
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2021-04-19T10:52:45Z
dc.date.available2021-04-19T10:52:45Z
dc.date.issued2015-12
dc.description.abstractA 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.en
dc.format.extent14
dc.identifier.bibliographicCitationRodriguez-Sanchez, M. R., Sanchez-Gonzalez, A., Marugan-Cruz, C. & Santana, D. (2015). Flow patterns of external solar receivers. Solar Energy, 122, pp. 940–953.en
dc.identifier.doihttps://doi.org/10.1016/j.solener.2015.10.025
dc.identifier.issn0038-092X
dc.identifier.publicationfirstpage940
dc.identifier.publicationlastpage953
dc.identifier.publicationtitleSolar Energyen
dc.identifier.publicationvolume122
dc.identifier.urihttps://hdl.handle.net/10016/32414
dc.identifier.uxxiAR/0000017591
dc.language.isoeng
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. ENE2012-34255es
dc.rights© 2015 Elsevier Ltd.
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.otherSolar External Receiveren
dc.subject.otherMolten salten
dc.subject.otherFlow patternen
dc.subject.otherCrossoveren
dc.subject.otherConvection heat transferen
dc.subject.otherFlux densityen
dc.subject.otherDesignen
dc.subject.otherHeliostaten
dc.subject.otherPlantsen
dc.titleFlow patterns of external solar receiversen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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