Feedwater repowering of 800 MW supercritical steam power plant
Abstract
The paper presents concept of using hot exhaust gases from the gas turbine to heat up feedwater in supercritical power plant unit. The benefits of such solution are discussed and the factors to be taken into account are listed. Details are discussed criteria to be met by gas turbine, in order to be safely and optimally connected to the steam system. Reference unit model with 800 MW electric power was created, which was later supplemented with a gas turbine. The system with gas turbine in relation to “clean” steam system has greater power and efficiency. The power increase is due to the extra power generated by gas turbine and steam system higher output by increasing amount of steam flow through the turbine (closed extraction to "bypassed" high-pressure heat exchanger).References
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[2] Brueckner H., Bergmann D., Termuehlen H.: Various Concepts for Topping Steam Plants with Gas Turbines. In: American Power Conference, pp. 1—14, 1992.
[3] Budzianowski W.: Negative net CO2 emissions from oxy-decarbonization of biogas to H2. International Jour¬nal of Chemical Reactor Engineering, vol. 8, p. A156, 2010.
[4] GateCycle. Getting Started and Installation Guide. Optimization and Diagnostic Software, 6th ed., 2009.
[5] Koike T., Noguchi Y.: Repowering of thermal power plants as fully- red combined cycle generating plants. Chubu Electric Power Co & Hitachi Ltd., Tech. Rep., 1999.
[6] Maslak C. C., Tomlinson L. O.: GE combined-cycle experience. GE Power Generation, Tech. Rep., 1994.
[7] Miller A.: Turbiny gazowe i układy parowo-gazowe. Wydawnictwa Politechniki Warszawskiej, 1984.
[8] On prediction of steam turbine efficiencies - an introduction to Spencer, Cotton, and Cannon method, Technical University of Berlin Institute for Energy Engineering, 1998
[9] Stenzel W. C., Sopocy D. M., Pace S. E.: Repowering existing fossil steam plants. SEPRILGeneration Power Solution, Tech. Rep., 1999.
Published
2012-06-30
How to Cite
WOLOWICZ, Marcin; MILEWSKI, Jaroslaw; BADYDA, Krzysztof.
Feedwater repowering of 800 MW supercritical steam power plant.
Journal of Power Technologies, [S.l.], v. 92, n. 2, p. 127--134, june 2012.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/272>. Date accessed: 21 nov. 2024.
Issue
Section
Power Plant
Keywords
feedwater repowering; supercritical power plant; gas turbines
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