System and method to stage primary zone airflow

Details System and method to stage primary zone airflow System and method to stage primary zone airflow

2005-12-06

2005-12-06

Casaregola, Louis J. (Department: 3746)

Power plants

Combustion products used as motive fluid

With exhaust treatment

C060S737000

Reexamination Certificate

active

06971227

ABSTRACT:
A combustion air delivery system comprising a compressor operable to provide a stream of compressed air and a bypass duct positioned to divide the stream of compressed air into a bypass flow stream and a primary flow stream. A recuperator is operable to preheat the primary flow to produce a flow of preheated compressed air. A premix chamber receives the bypass flow stream and mixes the bypass flow stream with a flow of fuel to produce a fuel-air flow. A can member at least partially defines a primary zone that receives the fuel-air flow and includes an aperture sized to admit a predetermined portion of the flow of preheated compressed air. The fuel-air flow and predetermined portion of the flow of preheated compressed air mix in the primary zone to produce a combustible flow. An igniter is operable to ignite the combustible flow.

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