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

Montoya Sancha, Andrés; Rodríguez Sánchez, María de los Reyes; López Puente, Jorge; Santana Santana, Domingo José

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

dc.affiliation.dpto	UC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructuras	es
dc.affiliation.dpto	UC3M. Departamento de Ingeniería Térmica y de Fluidos	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Dinámica de Estructuras Ligeras	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Tecnologías Apropiadas para el Desarrollo Sostenible	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticos	es
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.contributor.funder	Ministerio de Ciencia e Innovación (España)	es
dc.date.accessioned	2021-07-01T11:00:47Z
dc.date.available	2022-03-01T00:00:04Z
dc.date.issued	2020-03-01
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.	en
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".	en
dc.format.extent	15
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.	en
dc.identifier.doi	https://doi.org/10.1016/j.solener.2020.01.030
dc.identifier.issn	0038-092X
dc.identifier.publicationfirstpage	224
dc.identifier.publicationlastpage	238
dc.identifier.publicationtitle	Solar Energy	en
dc.identifier.publicationvolume	198
dc.identifier.uri	https://hdl.handle.net/10016/32973
dc.identifier.uxxi	AR/0000025594
dc.language.iso	eng
dc.publisher	Elsevier	en
dc.relation.projectID	Gobierno de España. RTI2018-096664-B-C21	es
dc.relation.projectID	Gobierno de España. RTI2018-096664-B-C22	es
dc.rights	© 2020 International Solar Energy Society. Published by Elsevier Ltd.	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Física	es
dc.subject.eciencia	Ingeniería Mecánica	es
dc.subject.other	Analytical model	en
dc.subject.other	Deflection	en
dc.subject.other	Longitudinal supports	en
dc.subject.other	Solar external-cylindrical receiver	en
dc.subject.other	Thermal stress	en
dc.subject.other	Tube elbows	en
dc.title	Influence of longitudinal clips in thermal stresses and deflection in solar tubular receivers	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication