Publication: Dynamic modeling of a particle/supercritical CO₂ heat exchanger for transient analysis and control
dc.affiliation.dpto | UC3M. Departamento de Ingeniería Térmica y de Fluidos | es |
dc.affiliation.grupoinv | UC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticos | es |
dc.contributor.author | Fernández Torrijos, María | |
dc.contributor.author | Albrecht, K.J | |
dc.contributor.author | Ho, C.K | |
dc.contributor.funder | Ministerio de Educación, Cultura y Deporte (España) | es |
dc.date.accessioned | 2020-12-03T14:53:41Z | |
dc.date.available | 2020-12-03T14:53:41Z | |
dc.date.issued | 2018-09-15 | |
dc.description.abstract | A dynamic model of a moving packed-bed particle-to-sCO₂ heat exchanger and control system for concentrating solar power (CSP) applications is presented. The shell-and-plate heat-exchanger model allows for numerically investigating the transient operation and control of the heat addition to the power cycle in a particle-based CSP plant. The aim of the particle-to-sCO₂ heat exchanger is to raise the sCO₂ temperature to 700 degrees C at a pressure of 20 MPa. The control system adjusts both the particle and sCO₂ mass flow rates as well as an sCO₂ bypass to obtain the desired sCO₂ turbine inlet and particle outlet temperatures for a prescribed thermal duty. The control system is demonstrated for disturbances in particle and sCO₂ inlet temperatures as well as changes in thermal duty for part-load operation. A feed-forward control strategy that adjusts the sCO₂ and particle mass-flow rates as functions of measured inlet temperatures and a steady-state model solution was able to return the heat exchanger to the desired operating condition, but not without experiencing significant deviations in the sCO₂ turbine inlet and particle outlet temperature (> 40 degrees C) during the transient. To reduce both sCO₂ and particle temperature deviations, a feedback control strategy was investigated, where sCO₂ and particle mass-flow rates based on the steady-state model solution were corrected based on measured outlet temperature deviations. The feedback control strategy maintains sCO₂ turbine inlet and particle outlet temperature to within 16 degrees C of the set points with a three-minute settling time for step changes in inlet conditions and thermal duty. This finding demonstrates the possibility of dynamically dispatching next-generation particle-based CSP plants driving sCO₂ power cycles. | en |
dc.description.sponsorship | The present work has been funded by DOE SunShot Program (SuNLaMP-0000000-1507), and the scholarship FPU14/04941 of the Spanish Ministry of Education, Culture and Sport. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc. for the U.S. Department of Energy’s National Nuclear Security Administration under contract DENA0003525. | en |
dc.format.extent | 28 | |
dc.identifier.bibliographicCitation | Fernández-Torrijos, M., Albrecht, K.J., Hob, C.K. (2018). Dynamic modeling of a particle/supercritical CO2 heat exchanger for transient analysis and control, Applied Energy, v. 226, pp. 595-606 | en |
dc.identifier.doi | https://doi.org/10.1016/j.apenergy.2018.06.016 | |
dc.identifier.issn | 0306-2619 | |
dc.identifier.publicationfirstpage | 595 | |
dc.identifier.publicationlastpage | 606 | |
dc.identifier.publicationtitle | Applied Energy | en |
dc.identifier.publicationvolume | 226 | |
dc.identifier.uri | https://hdl.handle.net/10016/31535 | |
dc.identifier.uxxi | AR/0000022251 | |
dc.language.iso | eng | |
dc.publisher | Elsevier | en |
dc.relation.projectID | Gobierno de España. FPU14/04941 | |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 España | |
dc.rights | © 2018 Elsevier Ltd. | en |
dc.rights.accessRights | open access | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | |
dc.subject.eciencia | Ingeniería Industrial | es |
dc.subject.other | Heat exchanger | en |
dc.subject.other | Shell-and-plate | en |
dc.subject.other | Feed-forward control | en |
dc.subject.other | Feedback control | en |
dc.subject.other | Supercritical CO2 | en |
dc.subject.other | Falling particle receiver | en |
dc.title | Dynamic modeling of a particle/supercritical CO₂ heat exchanger for transient analysis and control | en |
dc.type | research article | * |
dc.type.hasVersion | AM | * |
dspace.entity.type | Publication |
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