AL-31 ST

Gas-turbine engine AL-31ST for driving centrifugal supercharger of the gas compressor unit (designed by Lulka Design Bureau)

Specifications
Rated power at power turbine output shaft in station conditions, MW
16
Engine internal efficiency, %
36,0-0,5
Rated RPM of power turbine output shaft, (%)
5 300 (100)
Power turbine output shaft RPM variation limits, %
70…105
Cycle air flow rate at engine rated power, kg/sec
64,5
Fuel natural gas as per GOST standard 29328
Fuel gas consumption at engine rated power, kg/sec
0,902
Fuel gas pressure at the engine inlet in all operating conditions, kgf/cm2
28+2
Temperature of fuel mixture combustion gases at the power turbine outlet, °С
490
Hazardous substances emission level in the fuel mixture combustion gases:
- nitrogen oxides (for engines with regular combustion chamber), mg/m3
150
- nitrogen oxides (for engines with low emission combustion chamber), mg/m3
110
- carbon oxides, mg/m3
300
Operational characteristics
Specified life, hours
75 000
Time till first overhaul, hours
25 000
Time between overhaul, hours
25 000
Time between routine servicing, hours 3 000