Investigation of the liquid-vapor separator efficiency on the performance of the ejector used as an expansion device in the vapor-compression refrigeration cycle

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dc.authorscopusid56549701100
dc.authorscopusid55904179900
dc.authorscopusid23988426100
dc.contributor.authorAtmaca A.U.
dc.contributor.authorErek A.
dc.contributor.authorEkren O.
dc.date.accessioned2023-01-12T20:23:26Z
dc.date.available2023-01-12T20:23:26Z
dc.date.issued2020
dc.departmentN/A/Departmenten_US
dc.description.abstractEjector expansion refrigeration cycle with reference to the constant pressure mixing theory is investigated to display the effects of the liquid-vapor separator efficiency on the performance, entrainment ratio, and area ratio at various operation conditions. Reversible ejector assumption is used for the highest theoretical performance limit, whereas efficiency of the liquid-vapor separator and all ejector components is added to the model to calculate more realistic performance improvement potentials. R1234yf and R1234ze(E) having low global warming potential values are used in the analyses. Zero-dimensional thermodynamic models are constructed applying the conservation equations between the inlets and outlets of the refrigeration cycle and ejector components. Percentage performance decrease is higher when the mixing section and the separator efficiency is added to the model at higher condenser temperatures compared with the lower evaporator temperatures according to the investigated operation ranges. Vapor and liquid separation efficiency affects not only the performance but also the design of the ejector although it is an external component since it has influence on the area ratio and entrainment ratio. Finally, the difference between the percentage performance improvement of the reversible ejector cycle and the realistic ejector cycle including the separator and ejector components efficiencies is as high as 35% at the highest investigated condenser temperature for R1234yf. Copyright © 2019 by ASME.en_US
dc.description.sponsorshipTürkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAK: 116M367en_US
dc.description.sponsorship Scientific and Technological Research Council of Turkey (TÜBİTAK) (Grant No. 116M367; Funder ID: 10.13039/ 501100004410).en_US
dc.identifier.doi10.1115/1.4044354
dc.identifier.issn01950738
dc.identifier.issn0195-0738en_US
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85107446687en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1115/1.4044354
dc.identifier.urihttps://hdl.handle.net/11454/79707
dc.identifier.volume142en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmerican Society of Mechanical Engineers (ASME)en_US
dc.relation.ispartofJournal of Energy Resources Technology, Transactions of the ASMEen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectConstant pressure mixing ejectoren_US
dc.subjectEjector component efficiencyen_US
dc.subjectEjector expansion refrigeration cycleen_US
dc.subjectEnergy systems analysisen_US
dc.subjectHFOsen_US
dc.subjectLiquid-vapor separator efficiencyen_US
dc.subjectReversible ejectoren_US
dc.subjectEfficiencyen_US
dc.subjectEjectors (pumps)en_US
dc.subjectExpansionen_US
dc.subjectGlobal warmingen_US
dc.subjectLiquidsen_US
dc.subjectMixingen_US
dc.subjectSeparatorsen_US
dc.subjectTemperatureen_US
dc.subjectCondenser temperatureen_US
dc.subjectConservation equationsen_US
dc.subjectEvaporator temperatureen_US
dc.subjectExpansion refrigerationen_US
dc.subjectGlobal warming potentialen_US
dc.subjectOperation conditionsen_US
dc.subjectTheoretical performanceen_US
dc.subjectVapor-compression refrigeration cycleen_US
dc.subjectVapor compression refrigerationen_US
dc.titleInvestigation of the liquid-vapor separator efficiency on the performance of the ejector used as an expansion device in the vapor-compression refrigeration cycleen_US
dc.typeArticleen_US

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