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 combined cycle power device of the present invention belongs to the field of energy and power technology. A combined cycle power device comprises an expander, a compressor, the second expander, a pump, the second pump, a high-temperature heat exchanger, a high-temperature evaporator, a condenser and a mixed evaporator. A condenser connects a mixed evaporator. An expander connects the mixed evaporator. The mixed evaporator connects a compressor. The mixed evaporator passes through the second expander and connects the condenser. The compressor connects a high-temperature heat exchanger. A high-temperature evaporator connects the high-temperature heat exchanger after that the condenser passes through the second pump and connects the high-temperature evaporator. The high-temperature heat exchanger connects the expander. The high-temperature heat exchanger and the high-temperature evaporator have connect the outside respectively. The condenser connects the outside. The expander connects the compressor and transmits 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 thirteen 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: performing a pressurization process to set a state (1) to (2) of the M.sub.1 kg of working medium, performing a heat-absorption and vaporization process to set a state (2) to (3) of the M.sub.1 kg of working medium, performing a depressurization process to set a state (3) to (4) of the M.sub.1 kg of working medium, performing a heat-absorption process to set a state (4) to (5) of the M.sub.1 kg of working medium, performing a pressurization process to set a state (1) to (e) of the H kg of working medium, performing a heat-absorption process to set a state (e) to (8) of the H kg of working medium, performing a pressurization process to set a state (8) to (5) of the M.sub.2 kg of working medium, performing a heat-absorption process to set a state (5) to (6) of the (M.sub.1+M.sub.2) kg of working medium, performing a depressurization process to set a state (6) to (7) of the (M.sub.1+M.sub.2) kg of working medium, performing a heat-releasing process to set a state (7) to (f) of the (M.sub.1+M.sub.2) kg of working medium, performing a mixing heat-releasing process to set a state (f) to (8) of the (M.sub.1+M.sub.2) kg of working medium and H kg of working medium, performing a depressurization process to set a state (8) to (9) of the (M.sub.1+H) kg of working medium, performing a heat-releasing and condensation process to set a state (9) to (1) of the (M.sub.1+H) kg of working medium.

A pre-booster pumping system for increasing power generation of a turbine of a thermal power plant includes a booster pump system including an inlet end, an output end and at least one booster pump; the inlet end of the booster pump system being connected to the air draining end of the turbine through an input tube; each booster pump including an air inlet and an air outlet; the waste gas drained from the air draining end of the turbine being inputted to the booster pump; the vapor pressure being increased in the booster pump and then the vapor being outputted from the output end; and a condenser having an input end; the output end of the booster pump system being connected to the condenser through the output tube; the condenser serving to receive the waste gas from the booster pump system and cool the waste vapor as water.

The systems and methods described herein integrate a supercritical fluid power generation system with a LNG production/NGL separation system. A heat exchanger thermally couples the supercritical fluid power generation system with the LNG production/NGL separation system. A relatively cool heat transfer medium, such as carbon dioxide, passes through the heat exchanger and cools a first portion of extracted natural gas. The relatively warm heat transfer medium returns to the supercritical fluid power generation system where a compressor and a thermal input device, such as a combustor, are used to increase the pressure and temperature of the heat transfer medium above its critical point to provide a supercritical heat transfer medium. A second portion of the extracted natural gas may be used as fuel for the thermal input device.

The systems and methods described herein integrate a supercritical fluid power generation system with a LNG production/NGL separation system. A heat exchanger thermally couples the supercritical fluid power generation system with the LNG production/NGL separation system. A relatively cool heat transfer medium, such as carbon dioxide, passes through the heat exchanger and cools a first portion of extracted natural gas. The relatively warm heat transfer medium returns to the supercritical fluid power generation system where a compressor and a thermal input device, such as a combustor, are used to increase the pressure and temperature of the heat transfer medium above its critical point to provide a supercritical heat transfer medium. A second portion of the extracted natural gas may be used as fuel for the thermal input device.

A hybrid heat engine system includes a valve configured to provide first fluid from a heat source. The hybrid heat engine system further includes one or more first pipes fluidly coupled between the valve and a turbine. The one or more first pipes house a second fluid. The hybrid heat engine system further includes a chamber disposed between the valve and the one or more first pipes. The hybrid heat engine system further includes a piston disposed in the chamber between the first fluid and the second fluid. At least a portion of the second fluid is to be pushed through the turbine to generate energy responsive to actuation of the valve.

A hybrid heat engine system includes a valve configured to provide first fluid from a heat source. The hybrid heat engine system further includes one or more first pipes fluidly coupled between the valve and a turbine. The one or more first pipes house a second fluid. The hybrid heat engine system further includes a chamber disposed between the valve and the one or more first pipes. The hybrid heat engine system further includes a piston disposed in the chamber between the first fluid and the second fluid. At least a portion of the second fluid is to be pushed through the turbine to generate energy responsive to actuation of the valve.

A pre-booster pumping system for increasing power generation of a turbine of a thermal power plant includes a booster pump system including an inlet end, an output end and at least one booster pump; the inlet end of the booster pump system being connected to the air draining end of the turbine through an input tube; each booster pump including an air inlet and an air outlet; the waste gas drained from the air draining end of the turbine being inputted to the booster pump; the vapor pressure being increased in the booster pump and then the vapor being outputted from the output end; and a condenser having an input end; the output end of the booster pump system being connected to the condenser through the output tube; the condenser serving to receive the waste gas from the booster pump system and cool the waste vapor as water.

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.