Ozgur, Arif EmreTosun, Cemal2025-05-102025-05-1020151742-82971742-830010.1504/IJEX.2015.0682152-s2.0-84961377537https://doi.org/10.1504/IJEX.2015.068215https://hdl.handle.net/20.500.14720/15518In this study, the thermodynamic analysis of a two-stage transcritical CO2 cycle using flash gas by-pass is presented. The gas cooler pressure, the inter-stage pressure and the evaporation temperature of CO2 are selected as variable parameters. The cooling performance and exergetic efficiency variations of the cycle are graphically presented with these parameters. A comparison is presented between the flash gas by-pass two-stage transcritical cycle and the conventional two-stage transcritical cycle and the optimum operating parameters of the cycles are discussed. The importance of flash gas by-pass application is presented for energy and exergy efficiency improvement of two-stage transcritical CO2 cycles.eninfo:eu-repo/semantics/closedAccessCo2Thermodynamic AnalysisTranscritical CycleTwo-StageFlash-Gas By-PassArticle