First- and second-law thermodynamic analyses of a combined natural gas cycle power plant: Sankey and Grossman diagrams

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dc.authoridOgul, Hasan/0000-0002-5121-2893
dc.authoridKARAAGAC, Mehmet Onur/0000-0003-1783-9702
dc.contributor.authorKaraagac, Mehmet Onur
dc.contributor.authorKabul, Ahmet
dc.contributor.authorOgul, Hasan
dc.date.accessioned2025-03-23T19:26:09Z
dc.date.available2025-03-23T19:26:09Z
dc.date.issued2019
dc.departmentSinop Üniversitesi
dc.description.abstractThe natural gas combined cycle power plant is one of the best options for generating electricity due to its use of low carbon fuels, high efficiency, and operational flexibility. These plants consist of a combination of Brayton and Rankine cycles, and investigation of these cycles is performed in this paper. Here the parameters of pressure and temperature used in the calculations are taken from a combined cycle power plant. The net power output of the system at 25 degrees C ambient temperature and 101.325 kPa pressure was calculated as 45 and 12 MW for Brayton and Rankine cycles, respectively. In addition, Brayton, Rankine, and combined cycle efficiencies were calculated as 37.5%, 27%, and 47.5%, while the exergy efficiencies were determined as 36%, 44%, and 46%, respectively. In the system elements, the most energy was lost in the combustion chamber and the highest exergy efficiency was achieved in the compressor at 95% level. Impacts of an increase in ambient temperature, compressor pressure ratio, and change on turbine inlet temperature were further investigated. Energy (Sankey) and exergy (Grossman) flow diagrams were further drawn based on the analyses obtained from the combined cycle power plants.
dc.identifier.doi10.3906/fiz-1809-9
dc.identifier.endpage108
dc.identifier.issn1300-0101
dc.identifier.issn1303-6122
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85062245038
dc.identifier.scopusqualityQ2
dc.identifier.startpage93
dc.identifier.trdizinid336162
dc.identifier.urihttps://doi.org/10.3906/fiz-1809-9
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/336162
dc.identifier.urihttps://hdl.handle.net/11486/4642
dc.identifier.volume43
dc.identifier.wosWOS:000459348400009
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectCombined cycle
dc.subjectBrayton cycle
dc.subjectRankine cycle
dc.subjectenergy analysis
dc.subjectexergy analysis
dc.subjectSankey diagram
dc.subjectGrossman diagram
dc.titleFirst- and second-law thermodynamic analyses of a combined natural gas cycle power plant: Sankey and Grossman diagrams
dc.typeArticle

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