Gas turbine SGT6-9000HL

for power generationcombined-cycle

The next generation of Siemens Energy advanced air-cooled gas turbines Siemens Energy HL-class gas turbines are paving the way to the next level of efficiency and performance. Derived from proven Siemens Energy H-class technology in an evolutionary development step, the next generation of Siemens Energy advanced air-cooled gas turbines uses a series of new, but already tested technologies like super-efficient internal cooling features for blades or vanes and an advanced combustion system to increase firing temperature. The result: A technology carrier to the next level with a combined cycle efficiency beyond 64% with a midterm goal of even higher efficiencies. The Siemens Energy HL-class consists of two engines: The SGT5-9000HL for 50 Hz, and the SGT6-9000HL for 60 Hz. Fast start-up capability The gas turbine is capable of world-class fast cold starts and hot re-starts due to the light and stiff rotor with internal cooling air passages and free thermal expansion of rotor and casing parts during transients. Hydraulic Clearance Optimization (HCO), an active clearance control, ensures robustness and low turbine degradation at start-up. GT ramp-up rate 85 MW/min.