A hydrogen production system includes: a hydrogen production device connected to an electric power system and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.

The combined cycle power device is provided in the present invention and belongs to the field of energy and power technology. A combined cycle power device comprising an expander, the second expander, a compressor, a pump, a high-temperature heat exchanger, a condenser and an evaporator. An evaporator connects the second expander after that a condenser passes through a pump and connects the evaporator. The second expander connects the high-temperature heat exchanger. A compressor connects the high-temperature heat exchanger. The high-temperature heat exchanger connects an expander. The evaporator connects the compressor and the condenser respectively after that the expander connects the evaporator. The high-temperature heat exchanger connects the outside. The condenser connects the outside. The evaporator connected the outside. The expander and the second expander connect the compressor and transmit power.

The single-working-medium vapor combined cycle is provided in this invitation and belongs to the field of energy and power technology. A single-working-medium vapor combined cycle method consisting of eleven processes which are conducted with M.sub.1 kg of working medium, M.sub.2 kg of working medium and H kg of working medium separately or jointly: a pressurization process 1-2 of the M.sub.1 kg of working medium, a heat-absorption vaporization process 2-3 of the M.sub.1 kg of working medium, a pressurization process 1-e of the H kg of working medium, a mixed heat-absorption process e-6 of the (M.sub.1+M.sub.2) kg of working medium and the H kg of working medium, a pressurization process 6-3 of the M.sub.2 kg of working medium, a heat-absorption process 3-4 of the (M.sub.1+M.sub.2) kg of working medium, a depressurization process 4-5 of (M.sub.1+M.sub.2) kg of working medium, a heat-releasing process 5-f of the (M.sub.1+M.sub.2) kg of working medium, a mixed heat-releasing process f-6 of the (M.sub.1+M.sub.2) kg of working medium and the H kg of working medium, a depressurization process 6-7 of the (M.sub.1+H) kg of working medium, a heat-releasing and condensation process 7-1 of the (M.sub.1+H) kg of working medium.

The single-working-medium vapor combined cycle is provided in this invitation and belongs to the field of energy and power technology. A single-working-medium vapor combined cycle method consisting of eleven processes which are conducted with M.sub.1 kg of working medium, M.sub.2 kg of working medium and H kg of working medium separately or jointly: a pressurization process 1-2 of the M.sub.1 kg of working medium, a heat-absorption vaporization process 2-3 of the M.sub.1 kg of working medium, a pressurization process 1-e of the H kg of working medium, a mixed heat-absorption process e-6 of the (M.sub.1+M.sub.2) kg of working medium and the H kg of working medium, a pressurization process 6-3 of the M.sub.2 kg of working medium, a heat-absorption process 3-4 of the (M.sub.1+M.sub.2) kg of working medium, a depressurization process 4-5 of (M.sub.1+M.sub.2) kg of working medium, a heat-releasing process 5-f of the (M.sub.1+M.sub.2) kg of working medium, a mixed heat-releasing process f-6 of the (M.sub.1+M.sub.2) kg of working medium and the H kg of working medium, a depressurization process 6-7 of the (M.sub.1+H) kg of working medium, a heat-releasing and condensation process 7-1 of the (M.sub.1+H) kg of working medium.

A heat recovery system that includes at least one an engine, a radiator, an Organic Rankine Cycle (ORC) and a thermo-electric generator (TEG). The radiator may be coupled to the reciprocating engine, and the ORC may be coupled to the reciprocating engine and to the TEG. A control module in the system is configured to divert reciprocating engine jacket water fluid through any of the radiator, ORC and TEG to increase the energy efficiency of the reciprocating engine through heat recovery caused by the diverted fluid.

A heat recovery system that includes at least one an engine, a radiator, an Organic Rankine Cycle (ORC) and a thermo-electric generator (TEG). The radiator may be coupled to the reciprocating engine, and the ORC may be coupled to the reciprocating engine and to the TEG. A control module in the system is configured to divert reciprocating engine jacket water fluid through any of the radiator, ORC and TEG to increase the energy efficiency of the reciprocating engine through heat recovery caused by the diverted fluid.

An energy conversion system is disclosed with a converging-diverging duct, a first turbine, a compressor, a second turbine, and a return duct. The first converging-diverging duct is configured to receive a working fluid. The first turbine is configured to increase or decrease kinetic energy of the working fluid entering the first converging-diverging duct. The compressor device is configured to receive the working fluid after exiting the converging-diverging duct. The second turbine is in a flow path of the working fluid between the first converging-diverging duct and the compressor device. The second turbine is configured to decrease or increase kinetic energy of the working fluid entering the compressor device. The first and second turbines impart opposite changes to kinetic energy in the working fluid. The return duct is configured to return the working fluid to the first converging-diverging duct after passing through the compressor device.

This is a zero emissions power generation boiler that can be used to drive a wide range of steam turbines, from 20 MW up to 1200 MW, creating dry steam pressure ranging from 1000 psi up to 4500 psi. It creates steam by burning liquid hydrogen with liquid oxygen, completely eliminating the emission of greenhouse gases, lethal poisons, and every form of pollutant. It employs high-pressure cryogenic fuel pumps, a water cooling system, an electronic sparking system, a double-wall cylindrical boiler with a hemispherical top, and a control system that employs electronic sensors, actuators, signal conditions, microprocessors, digital interfaces, and mechanical back-up systems. It can be used in new power plants or as a replacement for current boilers in existing power plants. It has the option of working as part of a combined cycle system and can employ steam reheat systems.

A powerplant is provided that includes an engine and a water recovery system. The engine includes an engine combustor, an engine turbine, a flowpath and a fluid delivery system. The flowpath extends out of the engine combustor and through the engine turbine. The fluid delivery system includes a hydrogen reservoir and an oxygen reservoir. The hydrogen reservoir is configured to store fluid hydrogen as liquid hydrogen. The oxygen reservoir is configured to store fluid oxygen as liquid oxygen. The fluid delivery system is configured to provide the fluid hydrogen and the fluid oxygen for combustion within the engine combustor to produce combustion products within the flowpath. The water recovery system is configured to extract water from the combustion products. The water recovery system is configured to provide the water to a component of the powerplant.

The invention relates generally to methods and apparatus for integration of renewable and conventional energy to enhance electric reliability and reduce fuel consumption and emissions via thermal energy storage.