GAS TURBINE ENGINE WITH HEAT RECOVERY Russian patent published in 2009 - IPC F02C7/08 

FIELD: engines and pumps.

SUBSTANCE: invention can primarily be used for driving electrical generators in direct-drive gas turbine units. The proposed gas turbine engine incorporates a gas generator with a high-pressure compressor, combustion chamber and high-pressure turbine, power gas turbine, gas-air heat exchanger and additional compressor fitted on the same shaft along with the power gas turbine and air power turbine. The air power turbine intake communicates via the air chamber of the gas-air heat exchanger with the additional compressor outlet. The gas chamber of the gas-air heat exchanger communicates with the gas power turbine outlet. The gas generator is furnished additionally with the low-pressure compressor and low-pressure turbine. The present invention protects the magnitude of the ration between the additional compressor intake blading section area and the compressor outlet blading section area as well as the ration between the additional compressor blading section outlet area and the air power turbine first nozzle box mouth area.

EFFECT: decreased pressure in additional compressor, higher air flow rate in air power turbine, higher power output, higher efficiency and lower costs ensured by lower metal input.

4 dwg