TURBO POWER Turbine Technology Esa Utriainen Siemens Industrial Turbomachinery AB

TURBO POWER turbine projects First stage aero efficiency Film cooling Tip and hub cooling Internal cooling hot turbine structures

Aerodynamics - our core competence

The optimal design is not the best design, - the best compromise is the best design

Always increasing temperatures and pressures - effect of temperature on cycle efficiency

Always increasing temperatures and pressures - effect of pressure on cycle efficiency

Always increasing temperatures and pressures - material technology

A tough environment High power density, 340kW / blade for SGT800 Centrifugal load 32000G, Blade 1 0,8 kg becomes 26 ton in the engine. High gas temperatures, 1430C @ Vane 1 inlet Sensitive materials, every 10-15 C increase equals halving the lifetime

First stage aero efficiency

Film cooling - cooling technology evolution

Film cooling

Tip and hub cooling Heat transfer coefficient on the blade tip 1.0% tip gap 1.5% tip gap CFD, sqealer tip 2,5% gap 2.5% tip gap Experiment SST- k-

Tip and hub cooling

Internal cooling hot turbine structures