Siemens most popular F class gas turbine is SGT5-4000F, which was entered into market in 1996. Since 1996 total of 360 of SGT5-4000 are being used on the sphere. As per Siemens, it has achieved 23 million EOH (equivalent operating hours) of fleet experience, and achieved 99% of reliability.
SGT5-4000F is at top in its class due to outstanding performance and excellent efficiency (its combined cycle efficiency is reached at about 62%). Maintenance flexibility has results in short outage and thus gas turbine achieved highest availability.
SGT5-4000F gas turbine’s significances are:
- High Fuel Flexibility: offers dual fuel capability and tolerates fuels within a wide Wobbe range
- Proven in commercial operation,
- Efficient: reached to 62% combined cycle efficiency
- Power output augmentation,
- Fast start-up capability: Achieve combined cycle base load in 30 minutes in hot start condition.
- Excellent plant integration,
- High Steam raising capability,
- Evolutionary 3D blading.
Technical Data of SGT5-4000F – Simple Cycle Configuration:
| Gross Power Output | 329 MW | 385 MW |
| Fuel | Natural gas, LNG, sour gases, distillate oil, H₂, biodiesel, kerosene, jet fuel, condensate, naphtha. | Natural gas, LNG, sour gases, distillate oil, H₂, biodiesel, kerosene, jet fuel, condensate, naphtha. |
| Frequency | 50 Hz | 50 Hz |
| Gross Efficiency | 41% | 41.5% |
| Gross heat rate | 8,780 kJ/kWh (8,322 Btu/kWh) | 8,675 kJ/kWh (8,222 Btu/kWh) |
| Pressure Ratio | 20.1:1 | 21.0:1 |
| Turbine Speed | 3000 rpm | 3000 rpm |
| Exhaust mass Flow | 724 kg/s (1,596 lb/s) | 800 kg/s (1,764 lb/s) |
| Exhaust Temperature | 599° C (1,110° F) | 619° C (1,146° F) |
| NOₓ emissions | ≤ 15 ppmvd at 15% O₂ on fuel gas (without water injection for NOₓ control), ≤ 25 ppmvd at 15% O₂ on fuel oil (with water injection for NOₓ control), ≤ 58 ppmvd at 15% O₂ on fuel oil (without water injection for NOₓ control) | ≤ 15 ppmvd at 15% O₂ on fuel gas (without water injection for NOₓ control), ≤ 25 ppmvd at 15% O₂ on fuel oil (with water injection for NOₓ control), ≤ 58 ppmvd at 15% O₂ on fuel oil (without water injection for NOₓ control) |
Nawaz Ali Lakho is a power-generation professional and project-management consultant with more than 33 years of experience across thermal, nuclear, gas-turbine, steam-turbine, and combined-cycle power plants. His career encompasses plant operations, maintenance, commissioning, troubleshooting, asset management, and the leadership of multidisciplinary teams of more than 200 personnel.
His hands-on experience includes GE Frame 9E and 6FA and Alstom GT13DM gas turbines; Mitsubishi, GE, and Fuji steam turbines; heat-recovery steam generators; supercritical boilers; and major plant-control platforms from GE, ABB, Emerson, and Siemens. He has participated in cold and hot commissioning, major overhauls, hot-gas-path inspections, and combustion inspections at power facilities ranging from 150 MW to 586 MW.
At Global Power News, Nawaz shares field-informed O&M case studies, technical guidance, equipment insights, and analysis of power systems and energy infrastructure. Connect with him on LinkedIn.
International Experience: Have worked around the world specially, Pakistan, Iraq, Saudi Arabia, UAE, Angola, England and Nigeria.
Disclaimer: Articles are developed using internet research, professional field experience, and AI assistance. While every effort is made to ensure accuracy, the content may contain estimates, projections, or assumptions. The author assumes no liability for technical or computational discrepancies.