Closed loop steam cooled airfoil

Details Closed loop steam cooled airfoil Closed loop steam cooled airfoil

2006-04-18

2006-04-18

Tran, Len (Department: 1725)

Metal founding

Means to shape metallic material

United particle type shaping surface

C164S516000, C164S368000

Reexamination Certificate

active

07028747

ABSTRACT:
An airfoil, a method of manufacturing an airfoil, and a system for cooling an airfoil is provided. The cooling system can be used with an airfoil located in the first stages of a combustion turbine within a combined cycle power generation plant and involves flowing closed loop steam through a pin array set within an airfoil. The airfoil can comprise a cavity having a cooling chamber bounded by an interior wall and an exterior wall so that steam can enter the cavity, pass through the pin array, and then return to the cavity to thereby cool the airfoil. The method of manufacturing an airfoil can include a type of lost wax investment casting process in which a pin array is cast into an airfoil to form a cooling chamber.

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