Open AccessParametric optimization of the semi-closed oxy-fuel combustion combined cycle
Author(s) -
Vladimir Kindra,
Ilya Kaplanovich,
Maksim Smirnov,
Vladimir Naumov,
Alexey Zonov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1683/5/052028
Subject(s) - turbine , combined cycle , combustion , carbon dioxide , bar (unit) , steam electric power station , rankine cycle , inlet , overall pressure ratio , environmental science , materials science , nuclear engineering , engineering , power (physics) , mechanical engineering , chemistry , thermodynamics , gas compressor , physics , organic chemistry , meteorology
The report discloses thermodynamic studies of the semi-closed oxy-fuel combustion combined cycle. The computer simulation and parametric optimization approaches are described in details. The oxy-fuel cycle net efficiency in relationship to the carbon dioxide turbine exhaust pressure and the steam turbine inlet pressure is shown. The power production efficiency reduction is related to the turbine cooling losses is described. It is shown that the semi-closed oxy-fuel combustion cycle maximal net efficiency of 52.5% occurs at the initial temperature and pressure 1400°C and 60 bar at the carbon dioxide turbine exhaust pressure 0.5 bar and the steam turbine inlet pressure 90 bar. The cooling losses consideration leads to the net efficiency of 47.76% that is reached at the carbon dioxide turbine exhaust pressure 1 bar and the steam turbine inlet pressure 90 bar.