Siemens Gas Turbines

Meeting your needs and driving your profitability

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Description
Output Overview
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The Siemens gas turbine range has been designed and refined to help you meet the challenges of a dynamic market. Our 15 models with capacities from 4 to 375 MW, are designed with your profitability in mind. Whatever the application, our gas turbines meet the requirements for efficiency, reliability and environmental compatibility, giving low life-cycle costs and the best possible return on investment.

Watch our videos and learn more about our gas turbines with capacities from 4 to 375 MW and our gas turbine manufacturing facilities.

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Product Information

Gas Turbine SGT-400

Power Generation: ISO 12.90MW(e) / Mechanical Drive: 13.40MW

Description
Technical Data
Benefits
Design Concept
Package

The SGT-400 industrial gas turbine is a blend of 25 years experience and the latest combustion technologies. It offers a power output of 12.90 MW(e) for and 13.40 MW for mechanical drive configuration. The gas turbine is equipped with a Dry Low Emissions (DLE) combustion system, achieving low NO_X levels with gas and liquid fuels and a full dual-fuel capability.

In power generation the SGT-400 gas turbine benefits from the turbine’s high simple cycle efficiency (nominal: 34.8 %). In cogeneration applications the unit’s consistent, cost-effective power and steam-raising capability contribute to outstandingly high plant efficiencies. As a highly efficient unit the SGT-400 used in the following fields of application:

Simple cycle applications
Combined cycle applications
Combined heat and power (CHP)
Power generation for the oil and gas industry
Onshore power generator for oil field service, refineries etc.
Offshore platforms and FPSO vessels

For mechanical drive applications the SGT-400 gas turbine is a proven unit for driving compressors and pumps, primarily for the oil and gas industry. It offers outstanding reliability, efficiency and maintainability and is designed to operate on a wide range of gaseous and liquid fuels. Designed for applications where speeds and loads vary, the SGT-400 can operate over a range of different demands:

Drive solution for pumping applications including crude oil, other refinery product transmission and water injection
Drive solution for centrifugal compressors used in gas injection, pipeline transmission and boosting, gas processing and similar applications
Mixed duty applications

For Power Generation
Power output	12.90 MW(e)
Fuel	Natural gas / liquid fuel / dual fuel and other fuels capability on request
Frequency	50/60 Hz
Electrical efficiency	34.8%
Heat rate	10,355 kJ/kWh (9,815 Btu/kWh)
Turbine speed	9,500 rpm
Compressor pressure ratio	16.8:1
Exhaust gas flow / Temperature	39.4 kg/s, 555°C (86.8 lb/s, 1,031°F)
NO_x Emissions (with DLE, corrected to 15% O₂ dry)	≤ 15 ppmV

For Mechanical Drives
Shaft output	13.40 MW (18,000bhp)
Fuel	Natural gas / liquid fuel / dual fuel and other fuels capability on request
Efficiency	36.2%
Heat rate	9,943 kJ/kWh (7,028 Btu/bhph)
Turbine speed	9,500 rpm
Compressor pressure ratio	16.8:1
Exhaust gas flow / Temperature	39.4 kg/s, 555°C (86.8 lb/s, 1,031°F)
NO_x Emissions (with DLE, corrected to 15% O₂ dry)	≤ 15 ppmV

Proven design resulting in high availability and security of supply

Dual-fuel Dry Low Emissions (DLE) combustion system, meeting the most stringent legislation
Twin-shaft arrangement for both power generation and mechanical drive, allowing commonality of parts in mixed duty installations
Competitive cost-to-power ratio
Compact size
Site maintainability
Alternate rapid core engine exchange option, minimizes downtime

SGT-400

The twin-shaft configuration of the SGT-400 provides excellent speed and load turndown flexibility. The design is uniquely simple, employing a single gas generator rotor with twin bearings and a single-stage overhung turbine. The free power turbine is a two-stage overhung design. Rotors are contained in heavy duty casings which are horizontally and vertically split, allowing full site maintenance. The gas turbine is equipped with a Dry Low Emissions (DLE) combustion system, achieving low NO_X levels with gas and liquid fuels and a full dual-fuel capability.

With a power turbine speed of 4,800 to 10,000 rpm, generator or pump drive from the power turbine is usually via a speed-reducing gearbox. Most compressor drive applications can be met without the need for a speed-changing gear.

The SGT-400 is available as a factory-assembled package. It is easily transported, installed and maintained at site. The package incorporates the gas turbine, gearbox, the generator for power generation and all systems mounted on a single underbase. Turbine controls, generator control panel, motor control center for package motors and variable speed drive for starter motor are normally also package-mounted. The package is very compact, providing a small footprint and a high power-to-weight ratio.