Siemens SGT-A35 RB Formerly Industrial RB211-GT30*

Power Generation: 37.4 MW and 33.2 MW / Mechanical Drive: 38.1 MW and 33.7 MW

The Siemens SGT-A35 RB continues the legacy of the Industrial RB211 gas turbine, and represents its latest evolution. True to a trusted pedigree and technologically advanced, it offers the highest power density in its class and is ideally suited for offshore applications in the oil and gas industry. As more power translates into more production, less topside weight and lower capital investment, the Siemens SGT-A35 RB is positioned to offer more cost-effective solutions for offshore operators.

Technical Data

Siemens SGT-A35: Performance data for Mechanical Drive
SGT-A35 RB (38 MW) SGT-A35 RB (34 MW) SGT-A35 RB (34 MW) DLE
Power output 38.1 (MWs) 33.7 (MWs) 33.1 (MWs)
Fuel Dual fuel (Natural gas, liquid distillate, other fuels upon request). Automatic changeover at any load from primary to secondary fuel
Gross efficiency 40.3% 39.1% 38.9%
Heat rate 8,938 kJ / kWh 9,219 kJ / kWh< 9,255 kJ / kWh
Drive Shaft Speed 3,429 rpm 3,429 rpm 3,429 rpm
Pressure ratio 25.2 : 1 22.8 : 1 22.3 : 1
Exhaust mass flow 109.7 kg / s 99.3 kg / s 98.2 kg / s
Exhaust temperature 488 °C (910 °F) 501 °C (934 °F) 500 °C (934 °F)
NOx emissions ≤ 25 vppm at 15% O2 on fuel gas (with DLE)
Siemens SGT-A35: Performance data for simple cycle power generation
60 Hz 50 Hz
SGT-A35 RB
(38 MW)
SGT-A35 RB
(34 MW)
SGT-A35 RB
(34 MW) DLE
SGT-A35 RB (38 MW) SGT-A35 RB (34MW) SGT-A35 RB (38 MW) DLE
Power output 37.4 MW(e) 33.2 MW(e) 32.5 MW(e) 36.6 MW(e) 32.2 MW(e) 31.9 MW(e)
Fuel Dual fuel (Natural gas, liquid distillate, other fuels upon request). Automatic changeover at any load from primary to secondary fuel
Frequency 60 Hz 60 Hz 60 Hz 50 Hz 50 Hz 50 Hz
Gross efficiency 39.7% 38.5% 38.3% 38.7% 37.5% 37.3%
Heat rate 9,074 kJ / kWh 9,362 kJ / kWh 9,397 kJ / kWh 9,298 kJ / kWh 9,611 kJ / kWh 9,644 kJ / kWh
Turbine speed 3,600 rpm 3,000 rpm 3,600 rpm 3,000 rpm 3,000 rpm 3,000 rpm
Pressure ratio 25.0 : 1 22.7 : 1 22.3 : 1 25.4 : 1 22.9 : 1 22.6 : 1
Exhaust mass flow 109.1 kg / s 98.9 kg / s 97.9 kg / s 111.0 kg / s 99.8 kg / s 99.2 kg / s
Exhaust temperature 487 °C (909 °F) 501 °C (933 °F) 500 °C (932 °F) 489 °C (912 °F) 503 °C (937 °F) 504 °C (939 °F)
NOx emissions ≤ 25 vppm at 15% O2 on fuel gas (with DLE)