GE 7FA Heavy Duty Gas Turbine
The new 7FA gas turbine (7FA.05) is a heavy duty gas turbine designed for utility-scale power generation. Its improved efficiency and higher output will result in less fuel consumption and lower emissions on a MW-hr basis than currently available 7FA gas turbines (7FA.03) across the entire ambient temperature range, while maintaining the operational flexibility needed by customers to respond to varying electricity market conditions.
Environmental Benefit
The 7FA.05 gas turbine's improved efficiency and higher output will result in less fuel consumption and lower emissions on a MW-hr basis than currently available 7FA gas turbines across the entire ambient temperature range, while maintaining the operational flexibility needed by customers to respond to varying electricity market conditions. A typical customer operating a GE 207FA combined cycle plant with a 7FA.05 gas turbine instead of a 7FA.03 gas turbine for an equivalent net plant output of 627 MW could avoid the emission of more than 19,000 metric tons of CO2 per year, equivalent to the annual CO2 emissions of approximately 3,800 cars on US roads.
Operating Benefit
A typical customer operating a GE 207FA combined cycle plant with a 7FA.05 gas turbine instead of a 7FA.03 gas turbine for an equivalent net plant output of 627 MW could achieve annual fuel cost savings of over $2.1 million, at a natural gas price of $6.00 per MMBtu.
GE Power & Water's new 7FA heavy-duty gas turbine for 60 Hz power generation regions merges a host of proven technologies leveraged from across our product lines, and offers improvements in output, thermal efficiency and operability, along with lower life cycle costs versus our previous technology, all without compromising on the high degree of operational flexibility traditionally delivered by GE's F-class fleet.
The improved performance and efficiency of the new 7FA gas turbine translates to increased operational performance for power generators. Especially well-suited for cyclic operation, the 7FA can generate more than 620 MW in a 207FA combined cycle configuration with better than 57% efficiency.
Leveraging proven technology from earlier GE models, our latest 7FA is coupled with a highly advanced 14-stage axial compressor, providing enhanced performance, operability and maintainability in simple and combined cycle configurations.
Performance
The larger, more efficient compressor delivers improved output over earlier models by allowing more airflow, and enhanced efficiency due to its three-dimensional aerodynamic airfoils and a hybrid radial compressor diffuser.
Operability
The compressor's three variable stator vane stages enhance operational flexibility by allowing the control system to adjust compressor airflow to accommodate varying fuel and ambient conditions, or in response to changing operating conditions.
Maintainability
The compressor's field-replaceable blades, along with additional borescope holes that allow for enhanced coverage, improve maintainability and inspection capabilities and result in reduced outage times.
Improved monitoring and diagnostic capabilities are also included through additional sensors and instrumentation that monitor blade health, along with advanced algorithms that enhance efficiency predictions.
