Power plants – Combustion products used as motive fluid
Patent
1998-04-21
2000-03-14
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3975, 415176, F02C 718
Patent
active
060356278
ABSTRACT:
An air distribution system for an impeller rear cavity, including an air bleed at the compressor impeller tip for bleeding pressurized air into the rear cavity, and a second stream of P3 air is passed into the rear cavity area after having been cooled by a heat exchanger. The mixing of the cooled P3 air with the bleed air from the impeller tip reduces the temperature of the pressurized air in the rear cavity to reduce degradation of the impeller as well as to provide a flow of cooling air for the central bearing.
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Astle Jeffrey W.
Casaregola Louis J.
Pratt & Whitney Canada Inc.
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