A system of captive oxygen fuel reactor to efficiently generate electricity from hydrocarbon fuel utilizes a flow of oxygen and a flow of hydrogen from an electrolysis unit and a flow of carbon monoxide in order to complete a fuel oxidizer reaction within a heat exchanger unit. The fuel oxidizer reaction emits a flow of steam and a flow of carbon dioxide from the heat exchanger unit re-direct them through a steam rotary piston motor unit, a carbon dioxide rotary piston motor unit, a steam carousel motor unit, a carbon dioxide carousel motor unit, and a duel drum motor unit to generate electrical current. The exhaust gases within the system are properly discharged and stored within respective storage containers for the use of the system or other possible requirements.

A generator comprising: a heat differential module with a first, high temperature source configured for providing a work medium at high temperature, a second, low temperature source configured for providing a work medium at low temperature, and a heat mechanism in fluid communication with the first and second sources, configured for maintaining a temperature difference therebetween by at least one of: providing heat to the work medium at said first source, and removing heat from the work medium at said second source; a pressure module comprising a pressure medium which is in selective fluid communication with the work medium from the first, high temperature source and the work medium from the second, low temperature source, for alternately peifonning a heat exchange process with the high/low temperature work medium, to have its temperature fluctuate between a minimal operative temperature and a maximal operative temperature corresponding to the high and low temperature of the respective work medium; a conversion module in mechanical communication with the pressure medium, configured for utilizing temperature fluctuation of the pressure medium for the production of output energy; and a heat recovery arrangement in thermal communication with at least one of the heat differential module and the pressure module, configured for receiving at least a portion of the heat energy of the high and low temperature work medium which was not transferred to the pressure medium during said heat exchange process, and redirecting said heat energy back to one of the heat differential module and the pressure module; wherein provision of heat to the work medium is performed by way of a heat exchange process with an auxiliary high temperature fluid.

A combined-cycle power plant comprises a gas turbine engine for generating exhaust gas, an electric generator driven by the gas turbine engine, a steam generator receiving the exhaust gas to heat water and generate steam, and a duct burner system configured to heat exhaust gas in the steam generator before generating the steam and that comprises a source of hydrogen fuel, a fuel distribution manifold to distribute the hydrogen fuel in a duct of the steam generator, and an igniter to initiate combustion of the hydrogen fuel in the exhaust gas. A method for heating exhaust gas in a steam generator for a combined-cycle power plant comprises directing combustion gas of a gas turbine engine into a duct, introducing hydrogen fuel into the duct, combusting the hydrogen fuel and the combustion gas to generate heated gas, and heating water in the duct with the heated gas to generate steam.

A system for boiling a fluid to produce a vapor through the reaction of one or more reactive gases within the fluid is generally disclosed. The system may include a gas meter to provide specific quantities of the one or more gases to a reaction zone. The system can include electrodes that are constantly operating. Once the one or more gases pass between the electrodes from the gas meter, the electrodes automatically ignite the gas or gases without requiring control systems to trigger the electrodes' operation. The vapor and/or resultant thermal energy generated by the system can be used to provide heat, steam, warmed water, and/or other reactants for use. The vapor generated by the system can be used for power generation to turn a turbine, to provide heat via a radiator, or for various other uses.

A method of oxy-combustion includes providing an electrolyzer feedstock to at least an electrolyzer cell; separating the electrolyzer feedstock into a hydrogen feedstock and an oxygen feedstock using the at least one electrolyzer cell; combusting a first feedstock derived from the hydrogen feedstock and a second feedstock derived from the oxygen feedstock in a furnace; controlling one or more of a second feedstock composition or a pressure in the furnace; and recycling an exhaust steam from the furnace, wherein at least one portion of exhaust steam from the furnace is recycled in at least one of a steam feedstock and the electrolyzer feedstock.

A system for boiling a fluid to produce a vapor through the reaction of one or more reactive gases within the fluid is generally disclosed. The system may include a gas meter to provide specific quantities of the one or more gases to a reaction zone. The system can include electrodes that are constantly operating. Once the one or more gases pass between the electrodes from the gas meter, the electrodes automatically ignite the gas or gases without requiring control systems to trigger the electrodes' operation. The vapor and/or resultant thermal energy generated by the system can be used to provide heat, steam, warmed water, and/or other reactants for use. The vapor generated by the system can be used for power generation to turn a turbine, to provide heat via a radiator, or for various other uses.

An aircraft propulsion system includes a core engine that includes a combustor where a cryogenic fuel is mixed with compressed air and ignited to generate an exhaust gas flow, a propulsive fan that is driven by shaft power generated by the core engine, a cryogenic fuel system that includes a cryogenic fuel storage tank and a fuel flow path for routing fuel to the combustor of the core engine, an engine start system that includes a first stage that generates a first quantity of thermal energy for heating a first portion of fuel and a second stage that utilizes the heated first portion of fuel to generate a second quantity of thermal energy for heating a second portion of fuel, the second quantity of thermal energy is greater than the first quantity of thermal energy and the second portion of fuel is communicated to the core engine.

A device and method for generating electrical energy from hydrogen and oxygen, includes a combustion engine, a heat recovery steam generator connected into the exhaust gas duct of the combustion engine, wherein the heat recovery steam generator has only one pressure stage. An H.sub.2O.sub.2 reactor is provided to which steam from the heat recovery steam generator, water, oxygen and hydrogen are fed, such that, in the H.sub.2O.sub.2 reactor, a reaction of oxygen and hydrogen forms steam, the water that is introduced is evaporated, additional steam is generated, the resultant superheated steam is fed to a steam turbine, and a generator connected to the steam turbine provides an electric power. High-pressure feed water is injected from the heat recovery steam generator into the H.sub.2O.sub.2 reactor via a line to control the reaction in the H.sub.2O.sub.2 reactor in a targeted manner and set the steam exit temperature from the H.sub.2O.sub.2 reactor.