Florida Turbine Technologies

Project Number



Demonstration of Enabling Spar-Shell Cooling Technology in Gas Turbines


Florida Turbine Technologies

Principle Investigator

James Downs

Project Dates

7/8/2011 - 2/28/2013

Research Area

Aerodynamics/Heat Transfer

Federal Contact

Travis Shultz – travis.shultz@netl.doe.gov

Florida Turbine Technologies (FTT) will develop and test, at a commercial prototype scale, first-stage spar-shell turbine airfoils requiring significantly less cooling flow than the current state-of-the-art technology. FTT’s spar-shell airfoil concept has been developed to date through successive NETL-managed Small Business Innovation Research (SBIR) Phase I and II grants. The benefits of this technology are compelling, with studies indicating the combined cycle efficiency of current F-frame gas turbine-based power plants could be increased from 60 percent to 61 percent with the incorporation of this technology within the first three rows of airfoils in the gas turbine. Higher engine and system efficiencies are achieved through higher turbine inlet temperatures, reduced cooling flow budget, or some combination thereof. Successful engine test validation of spar-shell airfoils in this project will open the door to commercialization of this new technology in both F-frame and other highly-cooled turbine airfoil applications.