The STF-A850 and STF-D850 reheat steam turbines offer outstanding competitive performance for supercritical mid-size boiler steam plants, using GE’s latest generation of 3D reaction blading, advanced rear stages, and high-performance gland and inter-stage sealing technology
Optimized for integration
STF-A850 and STF-D850 reheat steam turbine modules are largely factory assembled and pre-tested to save installation time. The design with an optional side exhaust configuration is optimized for low level arrangement and outdoor installation, which helps reduce the total installed cost.
The fully modular architecture allows configuring the turbines for even the most demanding applications. Options include multiple controlled extractions, overload valves, and a wide range of LP configurations. Modules from other product families may be used as required.
A versatile platform optimized for mid-size supercritical boiler plant applications in either 50 or 60 Hz grids.
Specifications shown are for 50 Hz and 60 Hz.
|Main Steam||245bar (3550psig)||245bar (3550psig)|
|Main Steam / Reheat Steam Temperature||585°C / 585°C (1085F / 1085F)||585°C / 585°C (1085F / 1085F)|
|Output||150 - 300MW||200 - 1000MW|
|Efficiency||≤ 48%||≤ 49%|
|Maximum Backpressure||≤ 700 mbar (20.7 in. Hg)||≤ 700 mbar (20.7 in. Hg)|
|Control Concept||Sliding pressure mode, Hybrid mode with or without overload valve||Sliding pressure mode, Hybrid mode with or without overload valve|