ST heat conservation—warm and hot

Benefits of warm startup

• Typically allows starting the ST in warm “start 1” conditions, leading to a start-up time saving of up to 40 minutes and a fuel saving up to 15%
• The HP and IP ST are kept in warm conditions (or pre-warm). Target temperature for the critical zone of the rotor is 210°C

Benefits of hot startup

• Reduced start-up time;
• Reduced start-up fuel consumption
• Reduced start-up emissions
• Reduced start-up related steam turbine rotor stress
• Advanced preservation of ST and condenser (short- and long-term)