Performance Characteristics of Ejector Expander Transcritical CO2 Refrigeration Cycle

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dc.contributor.authorErsoy, H. Kürşad
dc.contributor.authorBilir, Nagihan
dc.date.accessioned2020-03-26T18:31:00Z
dc.date.available2020-03-26T18:31:00Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe effects on the performance of the basic CO2 refrigeration cycle when using an ejector as the expander to recover expansion work were investigated. A two-phase constant area ejector flow model was used in the ejector analysis. The coefficient of cooling performance and gas cooler pressure that yielded the maximum exergy efficiency, suction nozzle pressure drop, and optimum values for the ejector area ratio were determined for various evaporator and gas cooler outlet temperatures. Parametric studies were performed using engineering equation solver. The suction nozzle pressure drop had a significant effect on the ejector area ratio, coefficient of cooling performance, and exergy efficiency. It is necessary to design an ejector with the optimum area ratio to achieve the optimum pressure drop and maximum performance. Cycle that use the ejector as an expander always has higher coefficient of performance and exergy efficiency than conventional cycle under any operating condition. The irreversibility decreases compared to the classic refrigeration cycle when the ejector or turbine are used as an expander. The analysis results showed that - under a gas cooler pressure of 9.5 MPa, gas cooler outlet temperature of 40 degrees C, evaporator temperature of 5 degrees C, and cooling capacity of 3.5kW - the total irreversibility of the ejector system was lower than those of the basic and turbine expander systems by 39.1% and 5.46%, respectively.en_US
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [110M044]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technical Research Council of Turkey (TUBITAK) under grant number 110M044.en_US
dc.identifier.citationErsoy, H. K., Bilir, N., (2012). Performance Characteristics of Ejector Expander Transcritical CO2 Refrigeration Cycle. Proceedings of the Institution of Mechanical Engineers Part A-Journal of Power and Energy, 226(5), 623-635. DOI: 10.1177/0957650912446547
dc.identifier.doi10.1177/0957650912446547en_US
dc.identifier.endpage635en_US
dc.identifier.issn0957-6509en_US
dc.identifier.issn2041-2967en_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage623en_US
dc.identifier.urihttps://dx.doi.org/10.1177/0957650912446547
dc.identifier.urihttps://hdl.handle.net/20.500.12395/28291
dc.identifier.volume226en_US
dc.identifier.wosWOS:000309210800002en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorErsoy, H. Kürşad
dc.institutionauthorBilir, Nagihan
dc.language.isoenen_US
dc.publisherSAGE PUBLICATIONS LTDen_US
dc.relation.ispartofProceedings of the Institution of Mechanical Engineers Part A-Journal of Power and Energyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectSuction nozzleen_US
dc.subjectpressure dropen_US
dc.subjectejectoren_US
dc.subjectexpansionen_US
dc.subjectturbineen_US
dc.subjectcoefficient of performanceen_US
dc.subjectexergyen_US
dc.titlePerformance Characteristics of Ejector Expander Transcritical CO2 Refrigeration Cycleen_US
dc.typeArticleen_US

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