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Integrated optical-thermal-mechanical model for investigations into high temperature sodium receiver operation

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Show simple item record Conroy, Timothy J. Collins, Maurice N. Grimes, Ronan 2020-10-20T13:26:23Z 2019
dc.description peer-reviewed en_US
dc.description.abstract An integrated optical-thermal-mechanical model is used to simulate the interaction between a heliostat field and sodium-cooled receiver through diurnal CSP plant operation. The cumulative heat flux on the receiver is controlled using a heliostat aiming strategy. A semi-empirical heat transfer model returns the receiver thermal profile based on the incident heat flux map, with aiming strategy solutions regulated by allowable flux density (AFD) data. A number of tube materials and inlet-outlet temperature combinations are investigated, with receiver thermal power output indicating suitable constructions for the delivery of elevated temperatures required for advanced power cycles. The selection of tube material is critical in maximising the heat absorption capabilities. The excellent creep-fatigue strength of Inconel 617 and Haynes 230 at high temperature yields a potential improvement in daily power output of up to 18% over more conventional heat exchanger materials. For these more traditional alloys, the aiming strategy requires a greater spillage allowance in order to generate a heat flux profile that satisfies lower mechanical reliability limits. The Ni-based superalloys alloys permit operation to temperatures far beyond conventional limits (> 700◦C), however the net power output is curtailed by greater heat losses at the receiver and an increased spillage requirement due to diminishing AFD levels. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Solar Energy;194, pp. 751-765
dc.rights This is the author’s version of a work that was accepted for publication in Solar Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Solar Energy, 2019, 194,pp.751-765, en_US
dc.subject sodium solar receiver en_US
dc.subject aiming strategy en_US
dc.subject high temperature en_US
dc.subject tube material en_US
dc.subject thermal performance en_US
dc.subject mechanical reliability en_US
dc.title Integrated optical-thermal-mechanical model for investigations into high temperature sodium receiver operation en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.solener.2019.10.089 2021-11-14
dc.embargo.terms 2021-11-14 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2934736

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