STEAM POWER PLANT COUPLING REVERSE BRAYTON CYCLE WITH RANKINE CYCLE

摘要

PURPOSE:To aim at improvement in thermal efficiency, by making pressure gas turn to a coolant for a condenser, while adding a device of a deformed reverse Brayton cycle to the heat obtained upon heat exchange in a counter-flow way hereat, and heating and evaporating feed water with a steam generator. CONSTITUTION:As shown in a full line (thick line), pressure gas entered in a cooling pipe group of a condenser 12 is heat-exchanged with exhaust steam out of a steam turbine 11 in a counter-flow way and heated in uniform pressure. After the said pressure gas is further heated by boiler exhaust gas with a pressure gas heater 21, it passes through an intermediate pressure steam generator 18 as heated gas, and intermediate pressure feed water out of a feed water pump 13 is evaporated as saturated steam. This saturated steam is superheated with a superheater part 16 of a boiler, while a sufficient heat drop is given to it hereat, leading it into an intermediate pressure part of the steam turbine 11, and it is made to do work at the outside. With this constitution, such thermal efficiency as being almost nearly doubled over the past is attainable.