Advanced turbine cuts fuel use, emissions


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GE 7FA Upgraded Gas Turbine enhances combined-cycle efficiency for natural gas power plants, delivering cost savings and lower CO2 emissions for utilities, using advanced turbine technology to improve reliability, performance, and cleaner power generation.

 

The Main Points

A GE gas turbine upgrade boosting combined-cycle efficiency, cutting CO2 and costs for natural gas power plants.

  • Saves $2.1M/yr at $6/MMBtu vs existing 7FA
  • Cuts 19,000 t CO2/yr, equal to nearly 3,800 cars
  • Two 7FAs + one steam turbine in combined-cycle
  • Built in Greenville, SC; shipments begin early 2012

 

General Electric Co's Energy unit said its latest turbine design for natural gas-fired power plants will consume less fuel and emit less carbon dioxide than existing GE turbines.

 

GE Energy is introducing an upgraded Frame 7FA gas turbine, and German turbine supply highlights broader adoption, to help power plant operators reduce costs and emissions, the company said in a release.

U.S. utilities are expected to build more gas-fired plants, and Middle East power plant contracts indicate similar momentum, in the next decade due to increasing gas supply and the uncertainty of costs tied to proposed carbon legislation.

A typical combined-cycle plant using two new 7FA gas turbines with a single steam turbine would save $2.1 million per year at a gas price of $6 per million British thermal units, the company said, compared to a plant with GE's existing 7FA turbine.

The more efficient plant would also avoid emissions of 19,000 metric tons of CO2 annually compared to the earlier version, GE said, the equivalent of the heat-trapping emissions of nearly 3,800 cars.

"We have amassed technological advances from across our expansive portfolio of power generating and aviation turbines and delivered them in this upgraded 7FA turbine," said John Reinker, general manager of gas turbine products for GE Energy.

Natural gas power plants, including waste coke oven gas power initiatives, emit only about half the CO2 of traditional coal-fired plants. CO2 is the primary gas blamed for global warming.

GE said it will manufacture the upgraded 7FA turbine in Greenville, South Carolina, and begin shipments in early 2012, with Egypt electricity contracts underscoring demand.

Some of the first new 7FA turbines will be used at the proposed 586-megawatt Oakley Generating Station in Oakley, California, while Riyadh power plant project moves forward abroad. The plant is being developed by Radback Energy and is expected to be transferred to Pacific Gas and Electric Co after reaching commercial operation, GE said.

 

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