Influence of longitudinal clips in thermal stresses and deflection in solar tubular receivers

dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Dinámica de Estructuras Ligerases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tecnologías Apropiadas para el Desarrollo Sosteniblees
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.contributor.authorMontoya Sancha, Andrés
dc.contributor.authorRodríguez Sánchez, María de los Reyes
dc.contributor.authorLópez Puente, Jorge
dc.contributor.authorSantana Santana, Domingo José
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.description.abstractMechanical boundary conditions in tubular receivers of solar power tower plants have a main role in the thermal stress distribution and tube deflection. Longitudinal supports, particularly, has an strong influence on stress and displacements, since they prevent the tube bending. In this work, the influence of longitudinal supports, on tube deflection and stress has been studied in external-cylindrical receivers, using an analytical methodology, which it is able to take into account the tube geometry in the deflection calculation. Therefore, real tube geometry with elbows can be considered. Results for two aiming strategies, one equatorial and another that flattens the heat flux, have been compared for different clips distances, from 1 to 9 meters. The analytical methodology developed in Matlab provides lower computational cost than the numerical model developed in Abaqus. Results show that clip distribution has a significant impact on thermal stress. For clips distance of 2 meters or lower, the generalised plane strain solution provides the stress distribution along the tube accurately, with a tube deflection lower than 1 millimetrer. When clips distance increases, the longitudinal stress distribution differs from the plane strain case, and the deflection increases to non-desirable values. Deflection is greater at tube ends, and aiming strategies that flatten the heat flux increases the displacement in that regions.en
dc.description.sponsorshipThis work has been supported by the Ministerio de Ciencia, Innovacion y Universidades (Projects RTI2018-096664-B-C21 and RTI2018-096664-B-C22 (MICINN/FEDER, UE)) of the Spanish Government and the Iberdrola Foundation Spain under the fellowship "Ayudas a la investigación en energía y medio ambiente 2018".en
dc.identifier.bibliographicCitationMontoya, A., Rodríguez-Sánchez, M., López-Puente, J. & Santana, D. (2020). Influence of longitudinal clips in thermal stresses and deflection in solar tubular receivers. Solar Energy, vol. 198, pp. 224–238.en
dc.identifier.publicationtitleSolar Energyen
dc.relation.projectIDGobierno de España. RTI2018-096664-B-C21es
dc.relation.projectIDGobierno de España. RTI2018-096664-B-C22es
dc.rights© 2020 International Solar Energy Society. Published by Elsevier Ltd.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherAnalytical modelen
dc.subject.otherLongitudinal supportsen
dc.subject.otherSolar external-cylindrical receiveren
dc.subject.otherThermal stressen
dc.subject.otherTube elbowsen
dc.titleInfluence of longitudinal clips in thermal stresses and deflection in solar tubular receiversen
dc.typeresearch article*
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