Gas Turbine LM2500+ DLE 50Hz 2x CC
Gas Turbine
Also known as:
Turbine, Combustion Turbine
Gas Turbine LM2500+ DLE 50Hz 2x CC
Gas Turbine
Also known as:
Turbine, Combustion TurbineBuy
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Gas Turbine LM2500+ DLE 50Hz Combined Cycle 2x1 delivers higher capacity with low emissions and fast-start capability—ideal for large-scale power needs.Sign in
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Executive Summary
The LM2500+ DLE Combined Cycle 2x1 configuration pairs two gas turbines with two HRSGs and one steam turbine to deliver higher power output and improved efficiency.
Designed for larger capacity needs, it provides reliable, low-emission performance with fast start capability—ideal for industrial facilities and utilities requiring flexible, high-efficiency power generation in 50 Hz markets.
Technical Specifications
| Power | 89.7 MW |
| Heat rate LHV | 6402 Btu/kW-hr |
| Exhaust gas flow | 80.4 kg/s |
| Exhaust gas temperature | 965°F (518°C) |
| Power turbine speed | 3600 rpm |
| High Pressure Compressor | 17-stage |
| Ramp Rate | 60 MW per minute |
| Net efficiency LHV | 53.3% |
| Plant Turndown – Minimum Load (%) | 35% |
| Startup Time (Minutes) | 30 |
Features and Benefits
- Dry Low Emissions (DLE) system eliminates the need for water or steam injection.
- Reduces operational costs with no water or steam injection required.
- CO emissions does not to exceed 25 ppm on natural gas fuel and full load.
- Three-manifold fuel system with electrically actuated fuel metering valves for precise fuel control.
- Optional advanced control system upgrade for enhanced flexibility and robustness.
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Detailed Description
The LM2500+ DLE 50Hz Combined Cycle 2x1 system combines two LM2500+ dry low emissions gas turbines, each coupled with a Heat Recovery Steam Generator (HRSG), to power a single steam turbine. This high-efficiency configuration is engineered to meet larger capacity needs, delivering reliable, low-emission power with rapid startup capability.
At the core of this system is the LM2500+, an uprated version of the LM2500, featuring a 17-stage compressor. The addition of a forward-stage blisk increases airflow by approximately 20% at full power. This enhancement boosts the compressor pressure ratio from 18:1 to 23.1:1, contributing to higher overall efficiency and output.
Downstream of the compressor, the engine incorporates a fully annular combustor with externally mounted fuel nozzles, a two-stage air-cooled high-pressure turbine driving the compressor and gearbox, and a six-stage low-pressure power turbine aerodynamically coupled to extract energy from the high-energy exhaust flow. To accommodate the increased output, key design changes were made to the power turbine, including aerodynamic blade optimizations and rotor strengthening.
The Dry Low Emissions (DLE) system plays a crucial role in minimizing environmental impact. Its triple annular combustor lowers flame temperature, reducing NOx and CO emissions without water or steam injection—improving both thermal efficiency and maintainability.
Together, this 2x1 configuration offers a scalable solution for utility and industrial operators seeking clean, efficient, and dependable power generation at higher capacities.
Engineering Data
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Gas Turbine LM2500+ DLE 50Hz 2x CC
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