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 steam power plant includes a first steam power plant, a second steam power plant, and an inter-unit. The first steam power plant includes a boiler, a high-pressure turbine, a first reheat line, a first feed water heater, and a high-pressure extraction steam line. The second steam power plant includes a boiler, a high-pressure turbine, a first reheat line, a first feed water heater, and a high-pressure extraction steam line. The inter-unit connected extraction steam line connects the high-pressure extraction steam line of the first steam power plant with the high-pressure extraction steam line of the second steam power plant.

A steam power plant includes a first steam power plant, a second steam power plant, and an inter-unit. The first steam power plant includes a boiler, a high-pressure turbine, a first reheat line, a first feed water heater, and a high-pressure extraction steam line. The second steam power plant includes a boiler, a high-pressure turbine, a first reheat line, a first feed water heater, and a high-pressure extraction steam line. The inter-unit connected extraction steam line connects the high-pressure extraction steam line of the first steam power plant with the high-pressure extraction steam line of the second steam power plant.

A double-reheat power generator with an ultra high pressure cylinder and a high-intermediate pressure cylinder each having additional heat recovery turbine stages, including steam exhaust of the ultra high pressure cylinder having additional heat recovery turbine stages, that is, first extraction supplies steam to a first high-pressure heater. New second, new third and new fourth extractions of the ultra high pressure cylinder having additional heat recovery turbine stages supply steam to second, third and fourth high-pressure heaters respectively; a new fifth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to a deaerator; a new sixth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to an air-preheater; and an air-preheater drainage pump used for water draining of the air-preheater connects to the deaerator.

A double-reheat power generator with an ultra high pressure cylinder and a high-intermediate pressure cylinder each having additional heat recovery turbine stages, including steam exhaust of the ultra high pressure cylinder having additional heat recovery turbine stages, that is, first extraction supplies steam to a first high-pressure heater. New second, new third and new fourth extractions of the ultra high pressure cylinder having additional heat recovery turbine stages supply steam to second, third and fourth high-pressure heaters respectively; a new fifth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to a deaerator; a new sixth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to an air-preheater; and an air-preheater drainage pump used for water draining of the air-preheater connects to the deaerator.

A CCPP includes a gas turbine, a HRSG, a steam turbine a flash tank and first and second supply lines. The gas turbine, the HRSG and the steam turbine are interconnected to generate power. The gas turbine may include an air preheating system to preheat the air supplied in the gas turbine to enable expedite combustion therein. The flash tank is fluidically connected at a cold end of the HRSG to extract waste hot water from the cold end. Further, the first supply line is configured to interconnect the flash tank and the steam turbine to supply of flash steam to the steam turbine. Furthermore, the second supply line is configured to interconnect the flash tank and the air preheating system to supply hot flash condensate thereto.

A CCPP includes a gas turbine, a HRSG, a steam turbine a flash tank and first and second supply lines. The gas turbine, the HRSG and the steam turbine are interconnected to generate power. The gas turbine may include an air preheating system to preheat the air supplied in the gas turbine to enable expedite combustion therein. The flash tank is fluidically connected at a cold end of the HRSG to extract waste hot water from the cold end. Further, the first supply line is configured to interconnect the flash tank and the steam turbine to supply of flash steam to the steam turbine. Furthermore, the second supply line is configured to interconnect the flash tank and the air preheating system to supply hot flash condensate thereto.

A method to generate electrical power and cold energy from any grade of thermal energy (e.g., ambient, solar, waste heat, geothermal, combustion products, nuclear, or any combination thereof) in a cryogenic, closed loop (e.g., regenerative) cycle is disclosed. The method includes supplying a first stream of a pressurized first fluid in a liquid state having low or above cryogenic temperature range to absorb an externally supplied energy in the first heat exchanger disposed upstream of the first prime mover where the first fluid expands in a polytropic process and is submitted for full condensation or for cooling only by the second stream of the pressurized second fluid in a liquid state having cryogenic temperature in the second heat exchanger disposed upstream of the secondary prime mover, through which the preheated second fluid expands polytropically producing a cryogenic two phase flow that is further submitted to a combination of separators and Joule-Thompson valves to achieve maximum liquification of the second fluid. Non-condensed cryogenic vapor is pressurized in a compressor, with discharge been cooled by the first and/or second fluid and further combined with the second fluid before expansion in the second prime mover. Both prime movers may be operably connected to an electric generator or a propulsion system to produce required electrical power or work. The first and the second fluid may be of the same or a different origin selected from the substances like Air, N.sub.2, O.sub.2, Methane, and CO.sub.2, etc. The cold energy of the first and the second fluid can be used for a regenerative liquification of hazardous combustion emissions, CO.sub.2, and/or liquified industrial gases by individual species for a subsequent storage and sales.

A method to generate electrical power and cold energy from any grade of thermal energy (e.g., ambient, solar, waste heat, geothermal, combustion products, nuclear, or any combination thereof) in a cryogenic, closed loop (e.g., regenerative) cycle is disclosed. The method includes supplying a first stream of a pressurized first fluid in a liquid state having low or above cryogenic temperature range to absorb an externally supplied energy in the first heat exchanger disposed upstream of the first prime mover where the first fluid expands in a polytropic process and is submitted for full condensation or for cooling only by the second stream of the pressurized second fluid in a liquid state having cryogenic temperature in the second heat exchanger disposed upstream of the secondary prime mover, through which the preheated second fluid expands polytropically producing a cryogenic two phase flow that is further submitted to a combination of separators and Joule-Thompson valves to achieve maximum liquification of the second fluid. Non-condensed cryogenic vapor is pressurized in a compressor, with discharge been cooled by the first and/or second fluid and further combined with the second fluid before expansion in the second prime mover. Both prime movers may be operably connected to an electric generator or a propulsion system to produce required electrical power or work. The first and the second fluid may be of the same or a different origin selected from the substances like Air, N.sub.2, O.sub.2, Methane, and CO.sub.2, etc. The cold energy of the first and the second fluid can be used for a regenerative liquification of hazardous combustion emissions, CO.sub.2, and/or liquified industrial gases by individual species for a subsequent storage and sales.

A double-reheat power generator with an ultra high pressure cylinder and a high-intermediate pressure cylinder each having additional heat recovery turbine stages, including steam exhaust of the ultra high pressure cylinder having additional heat recovery turbine stages, that is, first extraction supplies steam to a first high-pressure heater. New second, new third and new fourth extractions of the ultra high pressure cylinder having additional heat recovery turbine stages supply steam to second, third and fourth high-pressure heaters respectively; a new fifth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to a deaerator; a new sixth extraction of the HP-IP cylinder having additional heat recovery turbine stages supplies steam to an air-preheater; and an air-preheater drainage pump used for water draining of the air-preheater connects to the deaerator.