SGT-A35 aeroderivative gas turbine

Name: SGT-A35 aeroderivative gas turbine
Brand: Siemens Energy

Aeroderivative gas turbine from Siemens Energy with high power density, rated about 32–38 MW(e), used in oil and gas applications onshore and offshore. Runs on natural gas, liquid fuel or dual fuel.

Description

The Siemens Energy SGT-A35 is an aeroderivative gas turbine offering high power density, with proven performance in oil and gas applications onshore and offshore. It is offered in GT62 and GT61 variants, with or without DLE combustion, including 60 Hz direct-drive versions.

Technical data

|---|---|---|---|---|

| GT62 DLE | 31.8 MW(e) | 37.8% | 4,800 rpm | 22.0:1 |

| GT62 | 32.1 MW(e) | 38.0% | 4,800 rpm | 22.6:1 |

| GT61 34 MW DLE | 33.7 MW(e) | 39.1% | 4,850 rpm | 22.4:1 |

| GT61 34 MW | 38.1 MW(e) | 40.5% | 4,850 rpm | 24.5:1 |

| GT61 34 MW Direct Drive DLE 60 Hz | 32.2 MW(e) | 37.8% | 3,600 rpm | 22.3:1 |

| GT61 34 MW Direct Drive 60 Hz | 34.5 MW(e) | 38.0% | 3,600 rpm | 23.6:1 |

Fuel: natural gas, liquid fuel or dual fuel (all variants)
Frequency: 50/60 Hz (direct-drive versions 60 Hz)
Heat rate: 8,881–9,535 kJ/kWh (8,418–9,037 Btu/kWh) depending on variant
Exhaust mass flow: approx. 97.7–105.4 kg/s (215.6–232.4 lb/s) depending on variant

Specifications

col1	SGT-A35 (GT62) DLE	SGT-A35 (GT62)	SGT-A35 (GT61 34 MW) DLE	SGT-A35 (GT61 34 MW)	SGT-A35 (GT61 34 MW) Direct Drive DLE 60 Hz	SGT-A35 (GT61 34 MW) Direct Drive 60 Hz
Power output	31.8 MW(e)	32.1 MW(e)	33.7 MW(e)	38.1 MW(e)	32.2 MW(e)	34.5 MW(e)
Fuel*	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel
Frequency	50/60 Hz	50/60 Hz	50/60 Hz	50/60 Hz	60 Hz	60 Hz
Gross efficiency	37.8%	38.0%	39.1%	40.5%	37.8%	38.0%
Heat rate	9,535 kJ/kWh (9,037 Btu/kWh)	9,473 kj/kWh (8,979 Btu/kWh)	9,199 kJ/kWh (8,719 Btu/kWh)	8,881 kJ/kWh (8,418 Btu/kWh)	9,529 kJ/kWh (9,031 Btu/kWh)	9,476 kJ/kWh (8,981 Btu/kWh)
Turbine speed	4,800 rpm	4800rpm	4,850 rpm	4,850 rpm	3,600 rpm	3,600 rpm
Pressure ratio	22.0 : 1	22.6 : 1	22.4 : 1	24.5 : 1	22.3 : 1	23.6 : 1
Exhaust mass flow	97.7 kg/s (215.6 lb/s)	98.6 kg/s (216.9 lb/s)	97.8 kg/s (215.6 lb/s)	105.4 kg/s (232.4 lb/s)	98.1 kg/s (216.3 lb/s)	101.0 kg/s (222.7 lb/s)
Exhaust temperature	487 °C (905 °F)	483 °C (901 °F)	487 °C (909 °F)	484°C (903 °F)	494 °C (921 °F)	506 °C (943 °F)
NOₓ emissions**	15 – 25 ppmvd		15 – 25 ppmvd		≤ 25 ppmvd

col1	SGT-A35 (GT62) DLE	SGT-A35 (GT61 34MW) DLE
Gross power output	39.8 MW(e)	42.6 MW(e)
Gross plant efficiency	51.4%	52.8%
Gross heat rate	7,005 kJ/kWh (6,639 Btu/kWh)	6,820 kJ/kWh (6,464 Btu/kWh)
Pressure/ Reheat	Dual/ No	Dual/ No

col1	SGT-A35 (GT62) DLE	SGT-A35 (GT62)	SGT-A35 (GT61 39 MW)	SGT-A35 (GT61 34 MW)	SGT-A35 (GT61 34 MW) DLE
Power output	33.1 MW	33.5 MW	39.5 MW	35.8 MW	34.9 MW
Fuel*	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel	Natural gas, liquid fuel, dual fuel
Efficiency	39.4%	39.6%	42.0%	40.8%	40.5%
Heat rate	9,142 kJ/kWh (8,665 Btu/kWh)	9,083 kJ/kWh (8,609 Btu/kWh)	8,572 kJ/kWh (8,125 Btu/kWh)	8,820 kJ/kWh (8,360 Btu/kWh)	8,880 kJ/kWh (8,417 Btu/kWh)
Drive shaft speed	3,120 – 4,800 – 5,040 rpm	3,120 – 4,800 – 5,040 rpm	3,153 – 4,850 – 5,093 rpm	3,153 – 4,850 – 5,093 rpm**	3,153 – 4,850 – 5,093 rpm**
Pressure ratio	22.1 : 1	22.6 : 1	24.6 : 1	23.0 : 1	22.4 : 1
Exhaust mass flow	97.7 kg/s	98.6 kg/s (217.4 Ib/s)	105.4 kg/s (232.4 lb/s)	99.2 kg/s	97.8 kg/s
Exhaust temperature	485 °C (905 °F)	481 °C (898 °F)	484 °C (903 °F)	486 °C (907 °F)	487 °C (909 °F)
NOₓ emissions**	15 - 25 ppmvd				15 - 25 ppmvd
				**high speed variant	**high speed variant

col1	Power generation package (direct drive)	Mechanical drive package
Approx. weight	165,700 kg (364,500 lb)	72,500 kg (159,500 lb)
Length	18.9 m (62 ft)	9.0 m (29.5 ft)
Width	3.4 m (11 ft)	3.4 m (11 ft)
Height	4.5 m (15 ft)	4.5 m (15 ft)

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