Open AccessAPPLICATION OF STEAM TURBINES SIMULATION MODELS IN POWER GENERATION SYSTEMS
Author(s) -
Cirilo Seppi Bresolin,
Paulo Smith Schneider,
Horácio A. Vielmo,
Francis França
Publication year - 2006
Publication title -
revista de engenharia térmica
Language(s) - English
Resource type - Journals
ISSN - 1676-1790
DOI - 10.5380/reterm.v5i1.61675
Subject(s) - steam turbine , nozzle , turbine , relief valve , throttle , work (physics) , mechanical engineering , mass flow , engineering , control theory (sociology) , computer science , mechanics , control (management) , physics , artificial intelligence
The goal of this work is to simulate partial load operation of steam turbines in different controlling modes. An isentropic efficiency function is associated to a specific steam turbine. The Schegliaiev and the Stodola's Ellipse Law, relating levels of pressure with mass flow, are compared. The proposed operational modes are: a) sliding pressure; b) throttling valve; c) nozzle valve. As a conclusion, Schegliaiev and Stodola's models leads to very similar results and the operational modes by valves establishes theoretical limits of operation for steam turbines. The sliding pressure control is more efficient considering design operation.
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