Patent ID: 6557337
Filing Date: 2003-05-06
Classification: F02C

Abstract:
A gas turbine engine having a compressor having an inlet and an outlet, a turbine having blades, said turbine being mounted downstream of said compressor, a compressor turbine mounted downstream of said turbine for rotation in a direction opposite to the rotation direction of said turbine, said compressor turbine having an outlet for discharging waste fluid, said waste fluid having a temperature, a heated fluid source provided upstream of said turbine, a fuel source connected to said heated fluid source, a flow duct, a portion of which is situated between said compressor and said heated fluid source, means for controlling the fluid density in said portion of said flow duct, comprising:a first heat exchanger having a first circuit and a second circuit, a first outlet line and a second outlet line; a second heat exchanger, said first circuit of said first heat exchanger being connected to said outlet of said compressor turbine and to said second heat exchanger, said second heat exchanger being connected to said inlet of said compressor, said outlet of said compressor being connected to said second circuit of said first heat exchanger, and said first outlet line of said second circuit of said first heat exchanger terminating at said turbine blades; variable means for increasing or decreasing the pressure of said waste fluid and for evacuating said waste fluid to the atmosphere; and means for controlling said temperature of said waste fluid.