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Evaluation of the effects of the operation strategy of a steam power plant on the residual life of its devices

A. Mirandola, A. Stoppato and E. Lo Casto

Energy, 2010, vol. 35, issue 2, 1024-1032

Abstract: In the deregulated market scenario wider power generation flexibility with respect to the past is needed; on the other hand, frequent changes of the operating conditions may reduce the life of the most critical components, such as steam heaters or turbine blades. Fatigue failures produced by cyclic thermal and/or mechanical stresses will be considered in this work. The estimation is based on creep and fatigue failure models and is applied at the component level. In particular, in this paper evaluation of the impact of thermo-mechanical fatigue in the superheater pipes of an actual coal power plant will be carried out to estimate its residual life. Then, this evaluation at the device level will be translated into plant level assessment.

Keywords: Creep–fatigue models; Life estimation; Deregulated market; Superheater (search for similar items in EconPapers)
Date: 2010
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