Its internal cooling air passages support reliable long-term operation and a fast start-up capability. Hydraulic Clearance Optimization (HCO) reduces clearance losses to increase gas turbine efficiency and minimize degradation at start-up and shutdown.
SGT5-4000F gas turbine highlights
The proven SGT5-4000F gas turbine is characterized by high performance, low power generation costs, long intervals between inspections, and a service-friendly design. Optimized flow and cooling add up to high gas turbine efficiency and very economical power generation in combined cycle applications.
The gas turbine boasts excellent fast cold start and hot restart capabilities thanks to the light and stiff rotor with internal cooling air passages, the advanced annular combustion system and the Hydraulic Clearance Optimization (HCO) active clearance control.
The SGT5-4000F achieves combined cycle base load within 30 min for hot start.
Extensive experience in commercial operation means that you can rely on proven and validated package and plant concepts that enable early power generation in simple cycle. Projects are implemented quickly. Since no external rotor air cooler is required, this simplifies the plant integration even further.
The SGT5-4000F offers dual fuel capability and tolerates fuels within a wide Wobbe range. You might need to adjust the burner configuration when the Wobbe index of the fuel gas varies by more than ±15%.
The SGT5-4000F combustion system is able to handle different fuel compositions, e.g. natural gas with high contents on hydrogen (up to 30 vol%), propane, ethylene and butane, as well as inert gases (N2, CO2, He, Ar, etc.). Furthermore, the SGT5-4000F combustion system is able to run on fuels with higher amounts of impurities, such as hydrogen sulfide (H2S) of up to 4000 ppm. The fuel system can switch over quickly between fuel gas and fuel oil and vice versa.
Wet Compression option
Wet Compression (WetC) increases the power output by injecting water into the gas turbine inlet. This optional SGT5-4000F feature can be used for peak-load machines to benefit from high electricity prices.
WetC enhances the turbine performance by reducing compressor inlet temperatures and increasing the mass flow throughout the turbine. Excess fog droplets evaporate in the compressor and produce an additional intercooling effect.
Chiller System option
The chiller is a heat exchanger, which cools down the compressor intake air in order to increase the gas turbine base load performance. The system can decrease the compressor inlet temperature far below the dew point of the ambience.
A chiller system can generate benefits in dry regions, where the high water consumption of other inlet air cooling options is undesirable.
Evaporative Cooling option
The system decreases compressor inlet temperature through humidification, raises relative humidity and increases the air mass flow, resulting in higher turbine output power and efficiency.
Evaporative cooling is the favorable system in dry and hot ambient.
With its high steam raising capability, the SGT5-4000F is excellently suited for cogeneration or combined heat an power (CHP) applications, e.g, for
- seawater desalination
- process steam
- district heating
For combined cycle applications with CHP, you can use a condensing or backpressure steam turbine, with or without steam extraction.
Ingenious design to the core
Characterized by its robust design, the SGT5-4000F boasts a proven 15-stage axial flow compressor, a durable annular combustion system, and a fully air-cooled 4-stage turbine. The moderate compressor pressure ratio provides a low impact on critical components.
The rotor is based on self-centering and -aligning discs with Hirth serration and central tie rod, providing you with the advantage of fast and easy on-site rotor destacking and balancing. Internal cooling air passages reduce the stress on critical components and ensure a long service life.
SGT5-4000F package
The gas turbine package for the SGT5-4000F consists of the core turbine, the generator (SGen5-2000P or SGen5-2000H) and auxiliary systems. We offer you a standardized basic design with options geared to your specific requirements. By using standard components and preassembly or prepackaging we achieve short installation times, with staggered delivery and early shipment of main components. We group subsystems and install them in separate auxiliary packages to minimize field assembly.
The SGT5-4000F fires up
SGT5-4000F-based combined cycle plants have the capability for fast start-up. With these plants, you can achieve combined cycle base load in less than 30 min for hot start.
High load gradients allow for fast load changes. With excellent peaking capability, and high part load efficiency complying with emission regulations down to lower part load, this is your profitable solution for competitive energy markets with fluctuating power demand.
Easy maintenance, high availability
We offer Long Term Programs (LTP), overhaul services, field service, spare parts, reconditioning of components and modernization upgrades. Whether scheduled service or short-term support, our specialists are there for you, on-site all over the world.
The rotor of the SGT5-4000F can be de-stacked on site. All compressor and turbine blades are replaceable without rotor de-stack or lift. Thanks to borescope ports, the compressor and turbine vanes can be visually inspected without lifting the cover, preventing unnecessary maintenance.
The advanced annular combustion chamber with individually replaceable heat shields allows for fast and easy walk-in maintenance.
Fuel flexibility matters
Whatever your needs may be: The SGT5-4000F offers dual fuel capability and tolerates fuels within a wide Wobbe range of ±15%, as well as many different fuel compositions, e.g. contents of hydrogen sulfide (H2S) of up to 4000ppm and contents of hydrogen (H2) of up to 30 vol%.
