Exergy Calculations and Refrigerant Selection Using Flue Gas Waste Heat in Organic Rankine Cycle

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dc.authoridSaru, Muhsine/0000-0003-3578-6675
dc.authoridSOZEN, Adnan/0000-0002-8373-2674
dc.contributor.authorSaru, Muhsine
dc.contributor.authorSozen, Adnan
dc.contributor.authorPulat, Erhan
dc.date.accessioned2026-02-27T07:33:15Z
dc.date.available2026-02-27T07:33:15Z
dc.date.issued2025
dc.description.abstractIn this study, the second law efficiency of the organic Rankine cycle (ORC) designed was calculated for each of refrigerants, and the exergies of the ORC components were examined separately. Candidate refrigerants were determined for comparison. When determining candidate refrigerants, the first thing to consider was the low boiling point temperature. Five candidate refrigerants were determined for comparison purposes, namely R290, R600a, R32, R125, R143a. When determining candidate refrigerants, importance was given to the criterion that their boiling temperature should be lower than the boiling temperature of water. The refrigerant with the highest exergy efficiency was selected as the most suitable refrigerant among the candidate refrigerants. The temperature of sink has been taken as a value that lower than the boiling point temperature o the refrigerant that has the lowest boiling point temperature among the others instead of ambient temperature.The power generation, first law efficiency and second law efficiency of R32were found to be 170,3 kJ/kg, 0,3049 and 0,284, respectively.The thermal efficiency and second law efficiency values of the ORC using R32 are higher than those using other refrigerants for conditions in the considered textile plant.
dc.description.sponsorshipYAK-Council of Higher Education [100-2000]
dc.description.sponsorshipThis study is a part of Ph.D. Thesis of M. Saru and acknowledges the financial support of YAK-Council of Higher Education with Grand number 100-2000.
dc.identifier.doi10.2339/politeknik.1699559
dc.identifier.issn1302-0900
dc.identifier.issn2147-9429
dc.identifier.issue3
dc.identifier.urihttp://dx.doi.org/10.2339/politeknik.1699559
dc.identifier.urihttps://hdl.handle.net/20.500.14669/4514
dc.identifier.volume28
dc.identifier.wosWOS:001500777100001
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherGazi Univ
dc.relation.ispartofJournal of Polytechnic-Politeknik Dergisi
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20260302
dc.subjectSecond law efficiency
dc.subjectORC
dc.subjectexergy analysis
dc.subjectworking refrigerant
dc.titleExergy Calculations and Refrigerant Selection Using Flue Gas Waste Heat in Organic Rankine Cycle
dc.typeArticle

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