Title :
Repowering of steam power plants for medium-high increase of power generated
Author :
Gambini, Mauro ; Guizzi, G.L.
Author_Institution :
Dept. of Mech. Eng., Rome Univ., Italy
Abstract :
The repowering of steam power plants by overlapped gas turbine units is discussed. The analysis has been performed on a particular arrangement of the two power plants: steam at medium pressure is produced in a proper recovery boiler fed by the exhaust of a gas turbine unit and it expands into the medium-low pressure steam turbine of the pre-existing plant in addition to the main steam flow. This solution involves a simple layout, very few modifications to the pre-existing components and a good compromise between performance and efficiency for medium-high increase of power generated (power ratio GT/ST about 0.3-0.5). The thermodynamic effects produced by these operations and the behavior and performance of the repowered plant are analyzed, and the results are presented and discussed
Keywords :
steam power stations; overlapped gas turbine units; recovery boiler; repowering; steam power plants; thermodynamic effects; Boilers; Fuels; Group technology; Heat recovery; Mechanical engineering; Performance analysis; Power generation; Thermal loading; Turbines; Water heating;
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
DOI :
10.1109/IECEC.1989.74824
