Gas turbine engine cooling system
AssigneeGeneral Electric Company
InventorGeorge A. Coffinberry
Life of this patent
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Abstract
A gas turbine engine cooling system. A first turbocompressor and a heat exchanger are fluidly interconnected and are each in fluid communication to receive air of differing pressures and temperatures. Typically, such air is received from various regions of the engine low pressure compressor and the engine high pressure compressor. The system delivers air through a duct to a portion of the engine for cooling, such as the engine high pressure turbine region, at lower temperatures and higher pressures than if cooling air were directly ducted from the engine compressor to the engine turbine.
Claims10
A system for cooling a first portion of a gas turbine engine, said engine having an engine compressor, and said cooling system comprising:
- (a) a turbocompressor having a compressor section and a turbine section each with an inlet and an outlet;
- and
- (b) a first heat exchanger having an inlet and an outlet for a first fluid flow providing cooling to said first heat exchanger and having an inlet and an outlet for a second airflow receiving cooling from said first heat exchanger, said first fluid flow inlet of said first heat exchanger in fluid communication with lower temperature fluid, said second airflow inlet of said first heat exchanger in fluid communication with higher temperature air from said engine compressor, said second airflow outlet of said first heat exchanger in fluid communication with said inlet of said compressor section of said turbocompressor, and said outlet of said compressor section of said turbocompressor in fluid communication with said first portion of said engine for said cooling of said first portion of said engine and wherein said higher temperature air has a higher temperature than that of said lower temperature fluid.
A system for cooling a first portion of a gas turbine engine, said engine having an engine compressor, and said cooling system comprising:
- (a) a turbocompressor having a compressor section and a turbine section each with an inlet and an outlet;
- and
- (b) a first heat exchanger having an inlet and an outlet for a first fluid flow providing cooling to said first heat exchanger and having an inlet and an outlet for a second airflow receiving cooling from said first heat exchanger, said first fluid flow inlet of said first heat exchanger in fluid communication with lower temperature fluid, said second airflow inlet of said first heat exchanger in fluid communication with said outlet of said compressor section of said turbocompressor, said inlet of said compressor section of said turbocompressor in fluid communication with higher temperature air from said engine compressor and said second airflow outlet of said first heat exchanger in fluid communication with said first portion of said engine for said cooling of said first portion of said engine and wherein said higher temperature air has a higher temperature than that of said lower temperature fluid.
Dependencies are inferred from the claim text.