GE Power releases more efficient natural gas turbine

GE Power said its largest and most efficient gas turbine, the HA, is now available at more than 64 percent efficiency in combined cycle power plants.

This milestone is achieved largely due to GE‘s advances in additive manufacturing and combustion, coming just 18 months after GE set a world record with the HA for powering the world’s most efficient combined-cycle power plant at 62.22 percent.

According to GE Power’s estimates, an additional percentage point of efficiency in gas turbines can translate to millions in fuel savings for customers globally.

GE engineers developed additively-manufactured components for the 9HA’s combustion system, using metal 3D-printing to unlock new geometries for better premixing of fuel and air, leading to greater efficiency. The new combustion system has already been successfully tested at full-load and full-speed at GE’s test stand in Greenville, South Carolina.

The 9HA.02 can now be quoted at 64 percent net efficiency in specified conditions with total output of 826 MW in 1×1 combined cycle configuration. Customers can order HA-based combined cycle power plants quoted at 64+ percent in 2018, compared to the previous quoted limit of 63.7 percent efficiency for 2017 orders.

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