METHOD OF AND DEVICE FOR OBTAINING USEFUL ENERGY IN COMBINATION CYCLE (VERSIONS) Russian patent published in 2004 - IPC

FIELD: heat power engineering.

SUBSTANCE: steam-gas cycle is essentially topping cycle (Rankine) of gas turbine cycle (Brayton) and it can be effected both with separated circuits of working media of these cycles (water steam and hot gases) and in combined circuit where use is made of energy of expansion of mixture of these two working media. Two decrease cost of implementation of steam-gas plants it is expedient to use existing aircraft gas-turbine engines and like ship and other engines. They are ready-made gas generator with excess pressure whose energy can be easily converted into useful energy in free power turbine and in water-steam exhaust gas heat recoverer. These group of inventions provides use of aircraft gas-turbine engine by creating gas-turbine topping cycle for steam-gas cycle which increases efficiency of steam-gas cycle owing to increasing part of gas-turbine power (Brayton cycle), including use of steam force power (Rankine cycle) not for direct production of useful energy and also as topping cycle, for maximum increase of part of Brayton cycle in common power of steam gas cycle. More over, said group of inventions increases efficiency of exhaust gas heat recoverer under variable conditions of steam gas plants and improves layout of equipment of such plants owing to use of properties inherent in aircraft gas-turbine engine.

EFFECT: improved reliability of production of useful energy.

7 cl, 7 dwg