Experimental Research on Flow in a 5-Stage High Pressure Rotor of 1000 MW Steam Turbine

M. Hoznedl; L. Bednár; M. Miczán; L. Tajc

11^th European Conference on Turbomachinery Fluid dynamics & Thermodynamics

Paper ID:

ETC2015-032

Main Topic:

Steam Turbines

Authors

M. Hoznedl - Doosan Skoda Power s.r.o., Czech Republic
L. Bednár - Doosan Skoda Power s.r.o., Czech Republic
M. Miczán - Doosan Skoda Power s.r.o., Czech Republic
L. Tajc - Doosan Skoda Power s.r.o., Czech Republic

Abstract

The results of experiments performed on a 5-stage high pressure (HP) steam turbine are presented. Operating parameters close to the real design parameters are simulated. Operating points with slightly different inlet temperature and pressure are also considered. The thermodynamic efficiency based on the torque moment measured by a water brake is compared with efficiency evaluated from the temperatures and pressures. An analysis of velocity ratios and efficiency of individual stages is carried out and the influence of Mach and Reynolds number is investigated. A comparison of the measured and predicted turbine output is also presented.