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Inverse heat problem of determining unknown surface heat flux in a molten salt loop

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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.authorFernández Torrijos, María
dc.contributor.authorSobrino Fernández, Celia
dc.contributor.authorAlmendros Ibáñez, José Antonio
dc.contributor.authorMarugán Cruz, Carolina
dc.contributor.authorSantana Santana, Domingo José
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es
dc.date.accessioned2021-03-17T15:33:45Z
dc.date.accessioned2021-03-18T09:13:48Z
dc.date.available2021-08-01T23:00:05Z
dc.date.issued2019-08-01
dc.description.abstractInverse heat transfer problems typically rely on temperature measurements for estimating unknown boundary heat flux, such as that in the water tubes of steam boilers or central receivers in solar tower power plants. In this work, an experimental facility consisting of a molten salt loop that simulates a tube of a solar tower receiver is presented to obtain the outer tube surface temperatures under solar tower power plant operating conditions. The external surface f the pipe in the test section is heated in a controlled manner with an induction heater, which provides a very high nonuniform heat flux. An inverse thermal method has been applied to obtain the incident heat flux onto the receiver tube from the outer surface temperature measurements. To solve the inverse problem, a transient two-dimensional numerical model of a circular pipe flowing molten nitrate salt and subjected to a nonhomogeneous circumferential heat flux has been developed. The heat flux calculation with the inverse method is in accordance with the heat flux estimation based on the calibration of the induction heater. A good agreement between the experimental and calculated temperatures is observed. Furthermore, the deflection of the tube caused by the nonhomogeneous heat flux is measured and is compared to the deflection calculated from the radial temperature profile from the inverse problem solution, and a good agreement between both results is observed.en
dc.description.sponsorshipThis work was partially funded by the Ministerio de Eduación, Cultura y Deporte para la Formación de Profesorado Universitario (FPU-04941), the Ministerio de Ciencia, Innovacion y Universidades (Project RTI2018-096664-B-C21 (MICINN/FEDER, UE)) of the Spanish Government and the Project SBPLY/17/180501/000412 of the Regional Government of Castilla-La Mancha.en
dc.format.extent51 p.
dc.identifier.bibliographicCitationFernández-Torrijos, M., Sobrino, C., Almendros-Ibáñez, J. A., Marugán-Cruz, C., & Santana, D. (2019). Inverse heat problem of determining unknown surface heat flux in a molten salt loop. International Journal of Heat and Mass Transfer, 139, 503-516.
dc.identifier.doihttps://doi.org/10.1016/j.ijheatmasstransfer.2019.05.002
dc.identifier.issn0017-9310
dc.identifier.publicationfirstpage503
dc.identifier.publicationlastpage516
dc.identifier.publicationtitleInternational Journal of Heat and Mass Transfer
dc.identifier.publicationvolume139
dc.identifier.urihttp://hdl.handle.net/10016/32165
dc.identifier.uxxiAR/0000023997
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDGobierno de España. RTI2018-096664-B-C21
dc.rights© 2019 Elsevier
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.ecienciaEnergías Renovableses
dc.subject.otherCentral receiveren
dc.subject.otherInductor coilen
dc.subject.otherInverse heat conduction problemen
dc.subject.otherTube bendingen
dc.titleInverse heat problem of determining unknown surface heat flux in a molten salt loopen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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