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

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dc.contributor.author Montoya Sancha, Andrés
dc.contributor.author Rodríguez Sánchez, María de los Reyes
dc.contributor.author López Puente, Jorge
dc.contributor.author Santana Santana, Domingo José
dc.date.accessioned 2021-07-01T11:00:47Z
dc.date.available 2022-03-01T00:00:04Z
dc.date.issued 2020-03-01
dc.identifier.bibliographicCitation Montoya, 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.
dc.identifier.issn 0038-092X
dc.identifier.uri http://hdl.handle.net/10016/32973
dc.description.abstract Mechanical 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.
dc.description.sponsorship This 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".
dc.format.extent 15
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2020 International Solar Energy Society. Published by 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 Analytical model
dc.subject.other Deflection
dc.subject.other Longitudinal supports
dc.subject.other Solar external-cylindrical receiver
dc.subject.other Thermal stress
dc.subject.other Tube elbows
dc.title Influence of longitudinal clips in thermal stresses and deflection in solar tubular receivers
dc.type article
dc.subject.eciencia Física
dc.subject.eciencia Ingeniería Mecánica
dc.identifier.doi https://doi.org/10.1016/j.solener.2020.01.030
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. RTI2018-096664-B-C21
dc.relation.projectID Gobierno de España. RTI2018-096664-B-C22
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 224
dc.identifier.publicationlastpage 238
dc.identifier.publicationtitle Solar Energy
dc.identifier.publicationvolume 198
dc.identifier.uxxi AR/0000025594
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
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