Determination of optimum ejector operating pressures for anodic recirculation in SOFC systems

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dc.authoridTimurkutluk, Bora/0000-0001-6916-7720
dc.authoridGENC, Omer/0000-0003-0849-6867
dc.contributor.authorGenc, Omer
dc.contributor.authorToros, Serkan
dc.contributor.authorTimurkutluk, Bora
dc.date.accessioned2024-11-07T13:31:41Z
dc.date.available2024-11-07T13:31:41Z
dc.date.issued2017
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, a numerical analysis of an ejector for micro combined heat and power system based on 18 kW Solid Oxide Fuel Cell (SOFC) using methane as fuel is presented. An ejector design, which reflects the real system conditions in the view of the flow characteristics, is provided and the ejector performance is numerically investigated for various methane pressure to exhaust pressure ratios and methane inlet temperatures. The results show that the fuel inlet temperature and the pressure ratio of the methane to exhaust significantly affect the steam to carbon ratio (STCR) and entrainment ratio. The higher pressure ratio and methane temperature allow a high entrainment ratio and STCR, but as pressure ratio and methane temperature increase, STCR and entrainment ratio remain unchanged after a specific value. 1140 different scenarios related with the inlet and outlet pressures of the ejector and methane temperature are created to determine the optimum operating conditions. The simulations show that the optimum methane inlet pressure is 7 bar and exhaust pressure is 1.159 bar for the ejector geometry of the interest. The entrainment ratio and STCR are determined as 2.05 and 0.92, respectively at this optimum scenario. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipTUBITAK [213M030]
dc.description.sponsorshipThe equipment and materials support of this research by TUBITAK under a project number of 213M030 is gratefully acknowledged.
dc.identifier.doi10.1016/j.ijhydene.2017.06.179
dc.identifier.endpage20259
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue31
dc.identifier.scopus2-s2.0-85023644705
dc.identifier.scopusqualityQ1
dc.identifier.startpage20249
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2017.06.179
dc.identifier.urihttps://hdl.handle.net/11480/14970
dc.identifier.volume42
dc.identifier.wosWOS:000408180900067
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectEjector
dc.subjectSOFC
dc.subjectmu-CHP
dc.subjectSTCR
dc.subjectEntrainment
dc.subjectNumerical analyses
dc.titleDetermination of optimum ejector operating pressures for anodic recirculation in SOFC systems
dc.typeArticle

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