OPERATING METHOD OF POWER PLANT WITH GAS TURBINE UNIT Russian patent published in 2011 - IPC F01K21/04 F02C3/34 F02C3/20 

FIELD: power industry.

SUBSTANCE: operating method of power plant with gas-turbine unit involves air compression in compressor, supply and combustion of fuel in combustion chamber, supply of steam to the flow part of gas-turbine unit, formation of steam-gas mixture, its expansion in turbine to convert heat energy to mechanical energy, cooling of steam-gas mixture in heat exchange device, obtaining of condensate and its conversion to the steam supplied to flow part, and discharge of the remaining cooled steam-gas mixture to atmosphere. Steam obtained from condensate in heat exchange device is completely introduced to flow part of gas-turbine unit between combustion chamber and turbine, and pressure is increased before turbine. Introduced steam is obtained by heating the condensate obtained from steam-gas mixture at pressure which is by 15-30% higher than the pressure in combustion chamber to the temperature equal to steam saturation temperature by controlling the condensate flow directed to heat exchanger as cold heat carrier.

EFFECT: improving fuel energy use efficiency, reducing heat pollution of the environment.

6 cl, 1 dwg