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GE’s HEAT Steam Turbine Technology Joins Ecomagination Portfolio

Posted on May 28, 2009

GE Energy announced that its HEAT (High Efficiency, Advanced Technology) steam turbine, designed to improve the efficiency and environmental performance of power plants, has been approved for addition to the ecomagination product portfolio after completing the company’s ecomagination product review (EPR) process.

The HEAT steam turbines are designed to improve plant efficiency and output for GE’s F-class combined-cycle technology, leading to a lower cost of producing electricity, a critical factor for success in today’s power generation industry. Higher efficiency translates into improved environmental performance with fewer emissions versus previous technology. Nine units are currently in commercial operation in natural gas-fired, combined-cycle power plants in the United States and Europe and collectively have surpassed 100 000 hours of commercial operation. Two of these units have each surpassed 20 000 hours of operation, widely regarded as an industry milestone for proving turbine reliability.

The HEAT steam turbine incorporates numerous improvements over earlier GE steam turbine designs, including a reaction-based, high-pressure turbine design capable of 164 bar operating pressure, which contributes to improved steam turbine performance. Integral covered buckets and nozzles ensure a high-quality steam path. Abradable coating and brush seals developed in conjunction with GE Global Research minimize internal leakage while maintaining tight clearances.

Ecomagination is GE’s company-wide initiative to advance technologies that help customers meet pressing operational and environmental challenges. The ecomagination EPR process combines both a rigorous internal analysis and a third-party verification of claims, quantifying operating and environmental performance benefits that accrue to GE’s customers by using ecomagination products. Ecomagination products are re-evaluated on a regular basis to ensure the continued validity of the analysis.

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