Comprehensive multivariable analysis of the possibility of an increase in the electrical efficiency of a modern combined cycle power plant with and without a CO2 capture and compression installations study

Janusz Kotowicz and Mateusz Brzęczek

Energy, 2019, vol. 175, issue C, 1100-1120

Abstract: The main objective of the presentstudy is to determine whether the thermodynamic efficiency of a modern combined cycle power plant (CCPP) with steam reheating can be increased when using designs both with and without CO2 separation and compression installations. The relatively high costs of a steam cycle compared to a gas turbine (GT) have motivated the present direction of efficiency research in this area. Therefore, in all systems analyzed in this work, the same structure of heat recovery steam generator (HRSG) was assumed, producing fresh and secondary steam, with the parameters 600 °C/18 MPa and 600 °C/4 MPa, respectively, and a constant GT exhaust gas temperature of 630 °C. A methodology for modeling the operation of a GT within a wide range of compression ratios β (10 ≤ β ≤ 100) has been developed.

Keywords: Combined cycle power plant; Gas turbine; Efficiency; Steam cooling (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:175:y:2019:i:c:p:1100-1120

DOI: 10.1016/j.energy.2019.03.145

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