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QualirexIndustrial

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QR-GT25000, QR-GT30000, QR-GT35000

QR-GT25000, QR-GT30000 and QR-GT35000 are separate machines from different manufacturers. Their ratings are shown together so they can be compared: ISO simple-cycle output is 23.2 MW, 31.9 MW and 34.5 MW. In a 2×1 combined cycle the QR-GT35000 reaches 54.9% net efficiency. Package variants cover natural gas, diesel and low-calorific-value gas. Overhaul interval is 50,000 hours and design life is 30 years.

ISO output
23.2–34.5 MW
Simple-cycle efficiencyLHV, QR-GT30000 / QR-GT35000
39.2%
Combined-cycle efficiency2×1, QR-GT35000, ISO
54.9%
Overhaul interval
50,000 h

Performance

Gas turbine design parameters
ParameterQR-GT25000QR-GT30000QR-GT35000
ISO output23.2 MW31.9 MW34.5 MW
Heat rate (Btu/kWh, LHV)9,3178,7858,709
Heat rate (kJ/kWh, LHV)9,8309,2699,188
Efficiency (LHV)38.60%39.20%39.20%
Pressure ratio20.122.923
Power turbine inlet temperature848 °C852 °C871 °C
HPC discharge temperature463 °C497 °C518 °C
Exhaust temperature530 °C525 °C542 °C
Gas generator maximum speed10,050 rpm10,100 rpm10,160 rpm
Gas generator rated speed9,461 rpm9,680 rpm9,800 rpm
Power turbine speed range3,000–3,600 rpm3,000–3,600 rpm3,000–3,600 rpm
Power turbine rated speed3,000 (50 Hz) / 3,600 (60 Hz)3,000 (50 Hz) / 3,600 (60 Hz)3,000 (50 Hz) / 3,600 (60 Hz)
Gas generator first critical speed4,000 rpm4,000 rpm4,000 rpm
Power turbine first critical speed1,465 rpm1,465 rpm1,465 rpm
Generator first critical speed1,465 rpm1,465 rpm1,465 rpm
Generator second critical speed4,120 rpm4,120 rpm4,120 rpm
Gas generator vibration<50 µm/s<50 µm/s<50 µm/s
Overhaul interval50,000 h50,000 h50,000 h
Design life30 years30 years30 years
HPC stages161717
Combustor typeSACSACSAC
HPT stages222
Power turbine stages666
Gas turbine weight3.1 t3.7 t3.7 t
Operating characteristics
ParameterQR-GT25000QR-GT30000QR-GT35000
Minimum load50%50%50%
Ramp rate30 MW/min30 MW/min30 MW/min
NOx @ 15% O₂15 ppm25 ppm25 ppm
CO @ 15% O₂25 ppm25 ppm25 ppm
Modified Wobbe index±25%±25%±25%
Hot start10 min10 min10 min
Exhaust energy134 MMBtu/h168 MMBtu/h179 MMBtu/h
1 × 1 combined cycle
ParameterQR-GT25000QR-GT30000QR-GT35000
Net output33.2 MW43.9 MW47.7 MW
Net heat rate (Btu/kWh, LHV)6,4566,2996,239
Net heat rate (kJ/kWh, LHV)6,8116,6456,583
Net efficiency (LHV)52.90%54.20%54.70%
Plant turndown34%35%35%
Ramp rate30 MW/min30 MW/min30 MW/min
Hot start30 min30 min30 min
2 × 1 combined cycle
ParameterQR-GT25000QR-GT30000QR-GT35000
Net output66.6 MW88.2 MW95.7 MW
Net heat rate (Btu/kWh, LHV)6,4316,2776,218
Net heat rate (kJ/kWh, LHV)6,7856,6226,560
Net efficiency (LHV)53.10%54.40%54.90%
Plant turndown17%17%17%
Ramp rate60 MW/min60 MW/min60 MW/min
Hot start30 min30 min30 min
Package variants
ParameterQR-GT30000-LQR-GT30000A-LQR-GT30000B-LQR-GT30000A-HQR-GT35000A-L
FuelNatural gas / dieselNatural gas / dieselLow calorific value gas / dieselNatural gas / dieselNatural gas / diesel
Output31.5 MW31.0 MW30.5 MW31.5 MW34.5 MW
Efficiency39.2%39.0%39.0%40.6%39.5%
NOx—<25 ppm<50 ppm<25 ppm<25 ppm
Exhaust temperature528 °C520 °C528 °C500 °C543 °C
Flue gas flow83.15 kg/s83.15 kg/s83.15 kg/s83.15 kg/s91.6 kg/s
Weight4.7 t5.2 t4.7 t19 t4.7 t
Size (L × W × H)4.9 × 1.5 × 1.6 m4.9 × 2.5 × 2.4 m4.9 × 1.5 × 1.6 m6.6 × 2.4 × 2.4 m4.9 × 1.5 × 1.6 m
Speed3,000 rpm3,000 rpm3,000 rpm6,100 rpm3,000 rpm

Applications

Steam turbine assumed pure condensing. All ratings are net plant at ISO conditions on natural gas; actual performance varies with project conditions and fuel.

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