FIELD: heat power engineering. SUBSTANCE: gas-and-steam turbine plant has recovery boiler connected after gas turbine at side of flue gas, heating surfaces of said boiler being placed in steam-water circuit of steam turbine. Cooling of gas turbine coolant is provided by heat exchange with medium in steam-water circuit independent from steam turbine. medium in independent steam-water circuit is at least partially evaporated at heat exchange with coolant. EFFECT: provision of reliable cooling of gas turbine. 9 cl, 1 dwg
