Abstract: A method of optimizing operation of a furnace to control emission within a system. Each furnace zone inside of the furnace is associated with at least one exhaust zone. A signal indicative of an amount of byproduct exiting the furnace through at least one of the exhaust zones is received from one or more of the sensors. Based on this signal, an offending furnace zone is identified from among the plurality of furnace zones, the offending furnace zone including an oxygen level contributing to the amount of the byproduct. A relative adjustment of at least one of an amount of oxygen being introduced into the offending furnace zone, and an angular orientation of an oxygen injector introducing oxygen into the offending furnace zone relative to a focal region within the furnace can be initiated. The furnace may have structure to perform the method and may be part of a system.

Abstract: A heat absorbing radiator and a gas turbine engine or a reciprocating piston engine are used to recapture and reconvert wasted heat energies into electric power and finally into hydrogen-deuterium fuel by having the engine's tailpipes submerged in cold compressed air inside the heat absorbing radiator pipes in reverse air flow to further drive the same engine. In order to capture fusion heat energy a hydrogen bomb is detonated in deep ocean to catch the flames by the water and the hot water energizes compressed air inside heat absorbing radiator pipes. In order to produce fusion energy an electric arc is passed thru/across liquid or gaseous deuterium by an electro-plasma torch and by a sparkplug in an internal combustion engine, or by detonating a dynamite inside liquid deuterium. Diamond is produced by placing carbon inside a hydrogen bomb which is then detonated in deepwater. Deuterium fusion flame is used first in smelting glass into large structural sizes before running an engine.

Abstract: Supersonic Magnetic Advanced Generation Jet Electric Turbine (S-MAGJET) described herein, and a subsonic derivative, MAGJET, integrate a gas power turbine, superconducting electric power and propulsion generation, and magnetic power flux field systems along with an ion plasma annular injection combustor which utilizes alternative petroleum-based fuel and combustion cycles to create a hybrid turbine turbomachine for aerospace propulsion. The propulsion unit is able to achieve a dramatic increase in horsepower, combustion and propulsion efficiency, and weight reduction. In addition, the turbomachinery structures may be disposed within an exo-skeleton architecture that achieves an increase in thrust to weight ratio with a concomitant increase in fuel efficiency and power generation over traditional gas turbine technology today. The engine continuously adjusts the temperature, pressure and mass airflow requirements using an electromagnetic power management system architecture.

Abstract: A method of and a plant for combusting carbonaceous fuel, the method including the steps of introducing particulate oxygen selective sorbent, such as a perovskite type material, into an adsorption reactor of the combustion plant to form a first particle bed in the adsorption reactor, fluidizing the first particle bed by an oxygen-containing first fluidizing gas to adsorb oxygen from the fluidizing gas to the sorbent, conveying oxygen-rich sorbent from the adsorption reactor to a combustion reactor of the combustion plant to form a second particle bed in the combustion reactor, fluidizing the second particle bed by an oxygen-deficient second fluidizing gas to desorb oxygen from the sorbent, so as to produce free oxygen gas, and introducing carbonaceous fuel into the combustion reactor to oxidize the fuel with the free oxygen gas.

Abstract: The present invention relates to a propulsion device for an aircraft. The propulsion device comprises a first energy converter (4), a second energy converter (5) and a propulsion unit (1). The first energy converter (4) provides first propulsion energy, and the second energy converter (5) provides second propulsion energy. The first energy converter (4) and the second energy converter (5) are adapted to provide the first propulsion energy and the second propulsion energy to the propulsion device (1).

Abstract: In at least one embodiment of the present invention, a method of recovering energy from a FCC unit having a reactor and a regenerator for overall CO2 reduction is provided. The method comprises cooling syngas to a predetermined low temperature to define cooled syngas. A turbo-expander including a first compressor is provided. The turbo-expander train is configured to combust and expand gas to drive the first compressor. The cooled syngas is compressed with the first compressor to define compressed syngas. A first stream of gas comprising CO2 and a second stream of gas comprising CO are separated from the compressed syngas. O2 and the first and second streams of gas are introduced to the turbo-expander train. The first stream of gas is expanded and the second stream of gas is combusted and expanded with the O2 to recover energy, driving the first compressor and producing the syngas.

Abstract: A gas turbine includes a disk rotatable about a rotational axis, when turbine rotor blades for receiving combustion gas obtained by burning fuel are connected to the side periphery, and energy of the combustion gas received by the turbine rotor blades is transmitted, and a radial passage that, in a cross-section at a virtual curved plane that is a curved plane about the rotational axis and in which distances from all points on the curved plane to the rotational axis are all equal, is a hole formed to include a portion having a shape in which the length in the circumferential direction of the disk is longer than the length in the direction parallel to the rotational axis, and is formed in the disk from the side of the rotational axis toward the outside of the disk.

Abstract: A turbine rotor (1) for a gas turbine with a one-piece compressor housing (11) or a compressor housing (11) which is divided in a first plane, a one-piece turbine housing (12) connected to the compressor housing (11) or a turbine housing (12) which is divided in a second plane different from the first plane comprises a compressor area which includes at least two compressor disks (2.1-2.5) and a turbine area which includes at least one turbine disk (13.1, 13.2). The compressor disks and turbine disks are clamped together by a tie rod arrangement which includes at least one tie rod (6) which has a first fastening area, a second fastening area for clamping at least two compressor disks between the first fastening area and the second fastening area, and a third fastening area for clamping at least one turbine disk.

Abstract: A system and method for reduction of diluent gaseous nitrogen (DGAN) compressor power in combined cycle power plant. A vapor absorption chiller (VAC) may be utilized to generate and transmit cooled fluid, such as water, to one or more heat exchangers located upstream and/or downstream of at least one compressor of the DGAN compressor system. Utilization of these heat exchangers may cool the temperature of the nitrogen, which may allow for less energy to be expended by the DGAN in compression of the nitrogen.

Abstract: A wall mounted domestic combined heat and power appliance comprising housing (1) containing a prime mover to generate electrical power and heat output. At least one bracket (2) at each side of the housing mounts the housing to a wall (W). Each bracket comprises a main body which is elongate in a vertical direction and has a L-shape cross section. Each extremity of the L-shape cross section has an enlarged portion (22, 23), a first (23) of which provides a spacer between the main body and the housing, and a second (22) of which provides a spacer between the main body and the wall.

Abstract: In a process for protection of a gas turbine (1) from damage caused by pressure pulsations (P), pressure pulsations (P) occurring during the operation of the gas turbine (1) are measured, from the measured pressure pulsations (P), a pulsation-time signal (PZS) is generated, the pulsation-time signal (PZS) is transformed into a pulsation-frequency signal (PFS), from the pulsation-frequency signal (PFS), a pulsation level (PL) is determined for at least one specified monitoring frequency band (12), the pulsation level (PL) is monitored for the occurrence of at least one specified trigger condition, and, when the at least one trigger condition occurs, a specified protective action (16) is carried out.

Abstract: A vehicle air conditioning system includes a pressure reducing device that is operatively coupled to a condenser downstream therefrom. An evaporator is operatively coupled to the pressure reducing device downstream therefrom. A refrigerant flow booster is operatively coupled to the evaporator downstream therefrom and a compressor is operatively coupled to the refrigerant flow booster downstream therefrom, the compressor also being operatively coupled to the condenser upstream therefrom. The refrigerant flow booster increases the flow of gaseous refrigerant to the compressor, in particular, when the compressor is operating at slower speeds.

Abstract: An engine unit, particularly for urban transport, comprising an engine (3) supplied with a compressed gas and having a expansion chamber (9), a liquid gas tank (28) in communication with the engine (3), and means (M, M?) for gasifying the liquid gas, which are interposed between the liquid gas tank (28) and the engine (3) for obtaining compressed gas. The gasifying means (M) comprise a gasification chamber (22) in communication with the liquid gas tank (28) and a liquid fuel tank (39) which is connected to the gasification chamber (22). The gasification chamber (22) is in fluid communication with both the liquid fuel tank (39) for the combustion of the liquid fuel with the oxygen of the liquid gas (22), and the expansion chamber (9) so that the compressed liquid gas and gaseous products of combustion process are used to do useful work.

Abstract: A bearing assembly includes an outer race and an inner race with a ball bearing element located between the inner and the outer races. The inner race has a first portion and a second portion separated from the first portion by a split. The first portion includes a first curved inner race support surface defined by a first center point and the second portion includes a second curved inner race support surface defined by a second center point that is non-coincident with the first center point.

Abstract: A cogeneration system and a method for controlling the cogeneration system in which waste heat of an engine is mainly used to prevent an outdoor heat exchanger from being frosted, or is used not only to prevent the outdoor heat exchanger from being frosted, but also to enhance the heating performance of an indoor heat exchanger, in accordance with ambient temperature conditions, so that the cogeneration system can positively cope with ambient temperature conditions, and can exhibit a high energy efficiency.

Abstract: A power plant with a CHP system having a distillation apparatus to yield a high thermally efficient electrical power plant for reduced fuel usage and subsequent lower CO2 emission specie. The incorporation of a Combined Heat and Power (CHP) system with a microturbine, makes use of the low emissions gas turbine exhaust gas waste heat of this electrical power generation plant for distillation processes, replacing the current use of electrical heating elements of the distiller unit. The inventive device includes a distiller apparatus and a microturbine gas turbine electrical power plant, a heat exchanger device where the exhaust gas waste heat energy of a gas turbine power plant passes thru one side of a series of plates/sheets of material and or tubes and heats the process fluids on the opposite side and also a surface area condenser is incorporated to reduce the product vapor state to a liquid.

Abstract: An enclosure assembly for enclosing a portion of a fuel delivery system of an engine, such as a portion of a fuel nozzle body that extends away from the engine, is disclosed herein. The enclosure assembly includes a nozzle body cover portion operable to enclose a fuel nozzle body. The enclosure assembly also includes a fuel line cover portion unitary with the nozzle body cover portion and operable to enclose a portion of a fuel supply line connected to the fuel nozzle body. Both the nozzle body cover portion and the fuel line cover portion are defined by a first and second half-shells operable to cooperate together in a clam shell arrangement.

Abstract: Gas turbine engine systems involving hydrostatic face seals are provided. In this regard, representative compressor assembly for a gas turbine engine includes a compressor having a hydrostatic seal formed by a seal face and a seal runner.

Abstract: The carbon dioxide recovery system includes a carbon dioxide absorption tower which absorbs and removes carbon dioxide from the combustion exhaust gas of a boiler by an absorption liquid, and a regeneration tower which heats and regenerates the loaded absorption liquid with carbon dioxide. The regeneration tower includes plural loaded absorption liquid heating means, which heat the loaded absorption liquid and remove carbon dioxide in the loaded absorption liquid. The turbine includes plural lines which extract plural kinds of steam with different pressures from the turbine and which supply the plural kinds of steam to the plural loaded absorption liquid heating means as their heating sources. The plural lines make the pressure of supplied steam increase from a preceding stage of the plural loaded absorption liquid heating means to a post stage of the plural loaded absorption liquid heating means.

Abstract: The invention is directed at an air flow apparatus for use with an electric vehicle. The air flow apparatus operates as complementary energy sources for the production of electricity to maintain battery capacity for the propulsion of an electrically powered vehicle. This is preferably achieved by combining induced air flow and the burning of a fossil fuel, such as propane, to effect generator output. In another embodiment, the use of propane is reduced as the vehicle proceeds at specific speeds.

Abstract: A method and system for controlling fuel flow in a fuel metering system that includes a metering valve and a proportional bypass valve that produces a differential pressure error across the metering valve includes supplying a first fraction of fuel through the metering valve. A second fraction of the fuel is directed through the proportional bypass valve. The differential pressure error produced by the bypass valve is determined, and fuel flow through the supply line is controlled by adjusting the metering valve based at least in part on the determined differential pressure error, and by adjusting the proportional bypass valve to maintain a substantially constant metering valve differential pressure across the metering valve.

Abstract: A thermodynamic system that produces mechanical, electrical power, and/or fluid streams for heating or cooling. The cycle contains a combustion system that produces an energetic fluid by combustion of a fuel with an oxidant. A thermal diluent may be used in the cycle to improve performance, including but not limited to power, efficiency, economics, emissions, dynamic and off-peak load performance, and/or turbine inlet temperature (TIT) regulation and cooling heated components. The cycle preferably includes a heat recovery system and a condenser or other means to recover and recycle heat and the thermal diluent from the energetic fluid to improve the cycle thermodynamic efficiency and reduce energy conversion costs. The cycle may also include controls for temperatures, pressures, and flow rates throughout the cycle, and controls power output, efficiency, and energetic fluid composition.

Abstract: A three or any number of sided combustion chamber with a central entrance hole through which enters air-fuel which is expoded and is exhausted through periferal exhaust ports. It causes rotation of the combustion chamber between 1,000 and 100,000 rpm. It runs a generator which can run any electrical part. The combustion chamber rotates and therefore it is the important part of the machine.

Abstract: A method for maintaining a civil-certified aircraft engine rotating part subject to fatigue failure during service use, the method comprising the steps of providing an assembly including the rotating part and at least one other component mounted to the rotating part; determining a maximum safe operating life for the assembly; and specifying a life limit for the assembly based on the maximum safe operating life, the life limit being the maximum number of cycles the assembly may be used before replacement.

Abstract: An exhaust gas treatment apparatus (20) for reducing the concentration of NOx, HC and CO in an exhaust gas stream (18) such as produced by a gas turbine engine (12) of a power generating station (10). The treatment apparatus includes a multifunction catalytic element (26) having an upstream reducing-only portion (28) and a downstream reducing-plus-oxidizing portion (30) that is located downstream of an ammonia injection apparatus (24). The selective catalytic reduction (SCR) of NOx is promoted in the upstream portion of the catalytic element by the injection of ammonia in excess of the stoichiometric concentration, with the resulting ammonia slip being oxidized in the downstream portion of the catalytic element. Any additional NOx generated by the oxidation of the ammonia is further reduced in the downstream portion before being passed to the atmosphere (22).

Abstract: This invention provides a system and method for cogeneration of electric power and building heat that efficiently interfaces a liquid-cooled electric power generator with a multi-zone forced hot water (hydronic) space heating system. The system and method utilizes an electric generator with an electric output capacity (kW) that is near the time-averaged electric power consumption rate for the building and with a heat generation capacity that is useful for meeting building heating needs. This generator is operated as the priority source of heat for the building, but normally only when there is a demand for heat in building, with the intent of running the generator for long periods of time and generating a total amount of electric energy (kWhs) that is significant in comparison to the total electric energy consumption of the building over time.

Abstract: A turbomachine combustion chamber has primary and dilution air inlet orifices formed by die stamping to have edges that project into the inside of the combustion chamber, and stress relaxation and/or reduction means in the edges or in the vicinity of the edges of said orifices, said means comprising, for each orifice, one, two, or three slots formed in the edge or around a fraction of the edge of said orifice.

Abstract: The invention concerns a turbine engine annular combustion chamber made up of inner (6) and outer (8) longitudinal walls connected upstream by a transverse chamber bottom (10) and comprising a single-piece cowling (12) covering said chamber bottom, the longitudinal walls (6, 8) each being inserted between corresponding flanges (22, 24; 26, 28) of the chamber bottom (10) and of the cowling (12). The longitudinal walls (6, 8), the chamber bottom (10) and the cowling (12) are assembled together by means of a plurality of first fixings (20a; 20b) between the longitudinal walls (6, 8) and the chamber bottom (10) alternating with a plurality of second fixings (20a; 20b) distinct from the first fixings between the longitudinal walls (6, 8) and the cowling (12).

Abstract: This invention provides a system and method for cogeneration of building heat and electric power and that efficiently interfaces a warm air heating system with a liquid-cooled electric power generator. The system and method utilizes an electric generator that is rated at near the time-averaged electric power consumption for the building. This generator is operated as the priority source of heat for the building, but normally only when there is a demand for heat in building. In this manner, the generator can run to generate a significant part of the building's electric power but in a manner that is typically supplemented in variable quantities by power from a public power grid. The heat output is directed via a liquid coolant circuit on the generator, as needed, to the warm air heating unit for the building. The warm air heating unit blows return air through a cabinet and out to the supply duct(s). The warm liquid coolant is directed through a primary heat exchanger in the cabinet.

Abstract: A domestic combined heat and power system comprising a Stirling engine (1) and water heater in the form of a supplementary burner (17). The exhaust gas from the Stirling engine is used to preheat combustible gas entering the Stirling engine and subsequently used to heat the water. The water heater (15) has a helical water duct (41) towards the periphery of a housing (39). Separate parts of this duct are heated, in series, by the exhaust gas from the Stirling engine and the supplementary burner (17) firing radially outwardly through the helical duct.

Abstract: A system and process for improving the combustion of fuel oil in boilers employs: (1) dual homogenization of fuel oil and water; (2) recovery of heat from, and injection of, boiler waste water in the homogenization system; (3) mixing of urea and boiler waste water and injection into the boiler exhaust gases.

Abstract: A system for generating hydrogen includes a liquid metal nuclear reactor having a non-radioactive secondary heat loop, a steam generator connected to the secondary heat loop, a high temperature water cracking system, and a topping heater. The heat produced by the nuclear reactor is used to raise the temperature of the feed water for the cracking system to between about 450° C. to about 550° C. The topping heater raises the feed water temperature from the 450° C. to 550° C. range to at least 850° C. so that the cracking system can operate efficiently to produce hydrogen and oxygen.

Abstract: A starting system and method for a gas turbine engine includes a controlled starter system and a controlled fuel system. The controlled starter motor is accelerated along an acceleration profile to a dwelling point. Concurrently with the starter motor spinning up the gas turbine engine rotor, the fuel system controller commands the pump motor to drive the fuel pump at a speed which fills the fuel line volumes and establishes adequate pressure for fuel atomization at light off. As the fuel pump motor and starter motor are independently controlled and coordinated the starter motor maintains the gas turbine engine at the predetermined dwelling point until ignition occurs. The starter motor also provides a controlled amount of assisting torque during acceleration of the gas turbine to minimize thermal transients which thereby increased the gas turbine engine operational life.

Abstract: A process to recover energy from a gas having a temperature of above 650° C. and an absolute pressure of more than 1.

Abstract: A method is provided for detecting airflow reversal in a sump system of a gas turbine engine. The method includes positioning a first pressure sensor at a sump vent to sense a discharge flow pressure from a sump within the sump system, positioning a second pressure sensor in the sump to sense a pressure in the sump, comparing the sensed pressures obtained from the first and second pressure sensors to determine a pressure difference, and comparing the pressure difference to a predetermined maximum allowable pressure difference.

Abstract: A removable instrumentation assembly and probe for use in simultaneously measuring dynamic pressure, at least one static pressure, and temperature for a gas turbine combustor. The instrumentation assembly allows combustor performance analysis as well as monitoring of component integrity through dynamic pressure fluctuations. The instrumentation assembly includes a probe having a plurality of passages, each connected to tubular conduits for measuring and recording respective pressures. In the preferred embodiment, dynamic pressures from within a combustion chamber are measured and recorded along with static pressures within the combustion chamber and outside of the combustion chamber, along with external air temperature.

Abstract: The invention relates to a power plant (1), with at least one turbo group (2) comprising at least one turbine (3) and at least one main burner (5) which is arranged upstream of the turbine (3), with at least one recuperator (11) which is arranged, on the one hand, in a first flow path (15) leading gas toward the turbo group (2) and, on the other hand, in a second flow path (12) leading the gas away from the turbo group (2), with at least one auxiliary burner (19) which is arranged outside the second flow path (12) and which is connected on the outlet side, at or upstream of the recuperator (11), to the second flow path (12).

Abstract: An integrated process for producing hydrocarbon products and energy includes reforming a hydrocarbonaceous gaseous feed stock to synthesis gas, and exothermally reacting the synthesis gas at elevated temperature and pressure, and in the presence of a Fischer-Tropsch catalyst, to produce a range of hydrocarbon products of differing carbon chain lengths. The reaction temperature is controlled by indirect heat exchange of a reaction medium, comprising synthesis gas and hydrocarbon products, with water, with the water being converted to steam (‘FT steam’). The process includes burning a combustible gas in a combustion chamber of a gas turbine generator, to form combusted gas, and expanding the combusted gas through an expansion chamber of the gas turbine generator to form hot flue gas. The gas turbine generator generates electrical energy. The FT steam is superheated by means of hot flue gas, thereby producing superheated FT steam.

Abstract: A process for the production of synthesis gas from a hydrocarbon fuel and steam and/or oxygen gas wherein at least part of any steam requirement is provided by heat exchange against exhaust gas from a gas turbine driving an air separation unit supplying at least part of any oxygen requirement for the synthesis gas production. The process is particularly applicable when the synthesis gas is used to prepare a synfuel by methanol synthesis or a Fischer-Tropsch process.

Abstract: An exhaust heat trap and redirecting system for utilizing exhaust heat includes an electric generator including an internal combustion engine. The electric generator is electrically coupled to an electrical system of a dwelling. An exhaust conduit is fluidly coupled to the engine for venting exhaust away therefrom. A substantially airtight sheath is positioned about a water tank in a water heater. The sheath comprises a cylinder having an inner wall and an outer wall. The sheath has an upper wall attached to the outer wall. A sheath inlet has a first end fluidly coupled to the sheath and a second end fluidly coupled to the exhaust conduit. A sheath outlet has a first end fluidly coupled to the upper wall of the sheath and a second end is directed outward of the dwelling.

Abstract: Integrated air-separation process and plant, including at least two air separation units (1, 101), an air compressor (13), which feeds a combustion chamber and at least one of the air separation units with compressed air, and at least one dedicated air compressor (21, 121) feeding one or both of the air separation units, so that, if both air separation units receive air from the compressor (13), the proportions of air coming from the air compressor are different in the case of the two air separation units.

Abstract: In a motor vehicle provided with an internal combustion engines and at least one auxiliary hydraulic mechanism, a system is provided that integrates pressurizing hydraulic fluid for the auxiliary hydraulic mechanism using of heat energy from the engine exhaust gases, and using the inertial energy from the voluntary slowing of the speed of the engine, as well as assisting in the starting system of the engine. The system includes a gas turbine (1), hydraulic pump (2), hydraulic accumulator (3), microcomputer (10), a hydraulic machined(11), a mechanical transmission (12), a tank (13) and piping, sensors and valves. A hydraulic transmission is positioned between the gas turbine (1) and the hydraulic accumulator (3), and a reverse hydraulic transmission is positioned between the shaft of the engine (15) and the hydraulic accumulator (3), so that the auxiliary hydraulic mechanism (14) can be fed with hydraulic liquid under pressure from the hydraulic accumulator (3).

Abstract: A process for the production of synthesis gas from a hydrocarbon fuel and steam and/or oxygen gas wherein at least part of any steam requirement is provided by heat exchange against exhaust gas from a gas turbine driving an air separation unit supplying at least part of any oxygen requirement for the synthesis gas production. The process is particularly applicable when the synthesis gas is used to prepare a synfuel by methanol synthesis or a Fischer-Tropsch process.

Abstract: A resonant electrical generation system includes a resonator, an energy source, and an electrical generator. The resonator provides resonating movement in a resonating element. The resonator can include a mass and spring element. The energy source is operatively coupled to the resonator to maintain resonating movement of the resonating element. The energy source can be a pulsatile linear combustor. The electrical generator is operatively coupled to and driven by the resonator to generate electrical power from the resonating movement.

Abstract: A coal transformation system comprises an ecological coal production unit for transforming raw coal into ecological coal. The production unit has an exhaust for carrying in a storage unit combustible, gaseous, waste by-products generated during the transformation of raw coal. A control system is provided for allowing the combustible, gaseous, waste by-products to be withdrawn and subsequently used as an additional source of energy when the system energy demand reaches a predetermined value, thereby contributing to reduce the energy costs during peak power needs.

Abstract: The invention provides a gas turbine, a combined plant and a compressor by which both of augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with a simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing down in the compressor.

Abstract: A metal article of manufacture including a tubular body portion and free-formed metal features on the tubular body portion. The free-formed metal features are formed of a layerwise deposition of a molten metal material in a predefined pattern to form the desired free-formed feature or construction.

Abstract: In the partial-regeneration cycle gas turbine system wherein part of the air compressed by a compressor 2 is extracted before a combustor 3, mixed with steam, and after the mixed gas is superheated by exhaust heat of a turbine, and the mixed gas is injected into the combustor, high-pressure steam is used as a fluid for driving a first mixer 22 that compresses extracted air, to increase the ratio of extracted air to steam, and then this mixed gas of extracted air and steam is further mixed with low-pressure steam from a low-pressure exhaust heat boiler, in a second mixer, and the mixture of gas is superheated in a superheater 6 by exhaust heat of the turbine, and injected into the combustor. Thus, the pressure of the driving steam can be raised, an exergy loss in an exhaust heat recovery portion can be reduced, and the efficiency of power generation can be increased without reducing the flow of generated steam.