Patent ID: 11898493
Assignee: COLLINS ENGINE NOZZLES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of heat exchange for a gas turbine engine comprising:
a fuel heating mode comprising:
collecting air cooled by fuel from a fuel air heat exchanger portion of at least one fuel injector in a plurality of fuel injectors into an air manifold; and
supplying the air cooled by the fuel from the air manifold to one or more external compressed air systems;
and

a fuel cooling mode comprising:
preventing air flow out of the air manifold to the one or more external compressed air systems;
flowing cooling air into the air manifold; and
flowing the cooling air into the respective fuel air heat exchanger portion of the at least one fuel injector in a plurality of fuel injectors.