Abstract:
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.
Abstract:
A steam turbine plant and an operating method thereof, and a combined cycle plant and an operating method thereof, include: a turbine; steam supply lines that supply main steam to the turbine; a steam control valve and an intercept valve provided to the steam supply lines; and a first auxiliary steam supply line that supplies auxiliary steam to the turbine via the steam supply lines which are located farther downstream than the steam control valve and the intercept valve.
Abstract:
A facility for generating mechanical energy by means of a combined power cycle is disclosed herein, which includes at least means for carrying out a closed or semi-closed, constituent regenerative Brayton cycle, which uses water as a heat-transfer fluid, means for carrying out at least one Rankine cycle, a constituent fundamental Rankine cycle, interconnected with the regenerative Brayton cycle, and a heat pump (UAX) including a closed circuit that regenerates the constituent regenerative Brayton cycle, as well as to the method for generating energy using the facility.
Abstract:
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, N2, O2, Methane, and CO2, etc. The cold energy of the first and the second fluid can be used for a regenerative liquification of hazardous combustion emissions, CO2, and/or liquified industrial gases by individual species for a subsequent storage and sales.
Abstract:
A system reclaiming contaminated water includes a heat exchanger that receives the contaminated water and converts at least a portion of the contaminated water into steam and collects at least a portion of the contaminants within the heat exchanger. A thermal transfer fluid is heated by a heat exchanger is communication with a heat source. The heated fluid is circulated through the heat exchanger to heat the contaminated water. A steam engine is coupled to a generator, the steam engine receives the steam from the heat exchanger to drive the generator to provide power for the system. Steam exhausted from the steam engine is supplied to supplemental heat loads and then condensed in a modular condensing system. The collected contaminants are directed to an evaporation device to remove residual liquid.
Abstract:
A thermal power plant includes a boiler for burning fossil fuel to generate steam, a steam turbine including a high-pressure turbine, an intermediate-pressure turbine, and a low-pressure turbine which are driven by steam generated in the boiler, an absorber for absorbing and capturing CO2 contained in boiler exhaust gas discharged from the boiler in an absorbing liquid, a desorber for circulating the absorbing liquid between the desorber and the absorber and separating CO2 from the absorbing liquid that has absorbed CO2, a reboiler for feeding a heating source for separating CO2 from the absorbing liquid to the desorber, a steam pipe system for feeding steam taken out from the high-pressure turbine and the intermediate-pressure turbine to the reboiler, and a steam feed source switching device.
Abstract:
A steam power unit including a double-flow medium pressure turbine section that is fluidically connected to a low pressure turbine section is provided. A flow section of the medium pressure turbine section is configured to supply an external steam consumer. A throttle valve for adjusting the pressure in the steam extraction line is arranged only in a turbine discharge line.
Abstract:
A method for retrofitting an existing steam turbine with a steam extraction facility is provided. The stem turbine has a plurality of pressure stages and is integrated into a fossil-fired steam power plant. A steam extraction line is connected to one pressure stage or between two pressure stages of the steam turbine, and a heating steam turbine is connected into the steam extraction line.
Abstract:
Disclosed is an advanced process that relates to the enhanced production of energy using the integration of multiple thermal cycles (Brayton and Rankine) that employ multiple fuels, multiple working fluids, turbines and equipment. The method includes providing a nuclear reactor, reactor working fluid, heat exchangers, compressors, and multiple turbines to drive compressors that pressurize a humidified working fluid that is combusted with fuel fired in at least one gas turbine. The turbine(s) provide for electrical energy, processes or other mechanical loads.
Abstract:
A method of controlling engine exhaust flow through at least one of an exhaust bypass and a thermoelectric device via a bypass valve is provided. The method includes: determining a mass flow of exhaust exiting an engine; determining a desired exhaust pressure based on the mass flow of exhaust; comparing the desired exhaust pressure to a determined exhaust pressure; and determining a bypass valve control value based on the comparing, wherein the bypass valve control value is used to control the bypass valve.