TY - JOUR N2 - This article presents changes in the operating parameters of a combined gas-steam cycle with a CO2 capture installation and flue gas recirculation. Parametric equations are solved in a purpose-built mathematical model of the system using the Ebsilon Professional code. Recirculated flue gases from the heat recovery boiler outlet, after being cooled and dried, are fed together with primary air into the mixer and then into the gas turbine compressor. This leads to an increase in carbon dioxide concentration in the flue gases fed into the CO2 capture installation from 7.12 to 15.7%. As a consequence, there is a reduction in the demand for heat in the form of steam extracted from the turbine for the amine solution regeneration in the CO2 capture reactor. In addition, the flue gas recirculation involves a rise in the flue gas temperature (by 18 K) at the heat recovery boiler inlet and makes it possible to produce more steam. These changes contribute to an increase in net electricity generation efficiency by 1%. The proposed model and the obtained results of numerical simulations are useful in the analysis of combined gas-steam cycles integrated with carbon dioxide separation from flue gases. L1 - http://journals.pan.pl/Content/85164/PDF/11-paper-Chmielniak.pdf L2 - http://journals.pan.pl/Content/85164 PY - 2016 IS - No 2 June EP - 316 DO - 10.1515/cpe-2016-0025 KW - CCS KW - combined cycle KW - rise in CO2 content in flue gases KW - flue gas recirculation KW - modelling A1 - Chmielniak, Tadeusz A1 - Mońka, Paweł A1 - Pilarz, Paweł PB - Polish Academy of Sciences Committee of Chemical and Process Engineering VL - vol. 37 DA - 2016 T1 - Investigation of a combined gas-steam system with flue gas recirculation SP - 305 UR - http://journals.pan.pl/dlibra/publication/edition/85164 T2 - Chemical and Process Engineering ER -