Transcription of Steam turbines start-ups
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Steam turbines start-ups
TRANSACTIONS OF THE INSTITUTE OF FLUID-FLOW MACHINERYNo. 126, 2014, 169 198 MARIUSZ BANASZKIEWICZ Steam turbines start-upsThe Szewalski Institute of Fluid Flow Machinery, Polish Academy of Sciences,Energy Conversion Department, Fiszera 14, 80-231 Gda sk, PolandAbstractThe article presents a procedure and the chosen results of numerical computations of liquid flowparameters, which use the data from their measurements realized on the test stand, for themodel of formed suction intake with a rib, supplied by the screened open wet well. Comparativeanalysis of numerical computations and these determined bymeasurements, did concern thestandard flow acceptance Principles of Steam turbines start-upsSteam turbines are being started based on operating instructions developed byturbine manufacturers and constituting an integral part ofstart-up instructions ofa Steam unit.
Turbine start-up can be done through all its cylinders simultaneously (i.e., HP, IP and LP) or with by-passing some of them (i.e, HP) in order to ensure better start-up conditions. For instance, for 360 MW turbines, depending on the HP inner casing temperature, one can distinguish two modes HP and IP valves control:
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