A New Superalloy Enabling Heavy Duty Gas Turbine Wheels for Improved Combined Cycle Efficiency


A comparison of a heavy duty gas turbine<br/>wheel and a jet engine disk. The large increase<br/>in wheel size presents processing challenges<br/>that must be addressed during alloy design.
A comparison of a heavy duty gas turbine
wheel and a jet engine disk. The large increase
in wheel size presents processing challenges
that must be addressed during alloy design.
General Electric - Global Research
Website:  General Electric Company
Award Number:  FE0026299
Project Duration:  09/14/2015 – 10/25/2016
Total Award Value:  $937,499
DOE Share:  $749,999
Performer Share:  $187,500
Technology Area:  Plant Optimization Technologies
Key Technology:  High Performance Materials
Location:  Niscayuna, NY

Project Description

NETL is partnering with General Electric Company to develop a high-performance, heavy-duty gas turbine wheel that could increase combined cycle turbine efficiency from approximately 62 to 65%. Specifically, the project will screen two different concepts to develop a thick section >1,200 °F-capable material for heavy-duty gas turbine wheels. The processing requirements for these large components, combined with the elevated temperature and stress property requirements, present a unique set of challenges requiring a new approach to alloy design that will be addressed in this project.

Project Benefits

This project, if successful, will increase gas turbine efficiency, which directly translates to a decrease in fuel consumption (4-7%) and reduced capital costs from higher output. A reduction of 3 to 6% in the CO2 produced per MW of power generated may also be realized.

Contact Information

Federal Project Manager 
Richard Dunst: richard.dunst@netl.doe.gov
Technology Manager 
Briggs White: briggs.white@netl.doe.gov
Principal Investigator 
Richard DiDomizio: didomizr@ge.com

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