Abstract: Electric power obtained by wind power generation is used effectively. A power generation system in an embodiment includes: a wind power generation apparatus; a solar thermal power generation apparatus; and an electrothermal converting unit. The solar thermal power generation apparatus includes: a heater heating a heating medium by solar heat; and a heat exchanger exchanging heat of the heating medium heated by the heater and heat of a working fluid to operate a drive mechanism of a power generator. The electrothermal converting unit converts part of electric power generated by the wind power generation apparatus into heat to heat the heating medium.

Abstract: A steam turbine plant of one embodiment includes at least one heater configured to change water into steam to produce high pressure steam and low pressure steam having a lower pressure than the high pressure steam, a high pressure turbine including a turbine or turbines connected to each other in series, and having a first inlet to supply the high pressure steam, a second inlet to supply the low pressure steam and located at a downstream of the first inlet, and an exhaust port located at a downstream of the second inlet, the high pressure turbine being configured to be driven by the steam supplied from the first and second inlets, a reheater configured to heat the steam exhausted from the exhaust port, and a reheat turbine configured to be driven by the steam from the reheater.

Abstract: In one embodiment, a solar heat collecting system includes a heat collector configured to heat a heat medium by a sunray. The system further includes a heater configured to heat a heating target fluid by the heat medium. The system further includes a heat medium pipe configured to circulate the heat medium between the heat collector and the heater. The system further includes a temperature sensor configured to measure a temperature of the heat medium flowing from the heat collector toward the heater, at a position located upstream of an initial bent portion of the heat medium pipe in a region where the heat medium pipe extends from the heat collector toward the heater. The system further includes a controller configured to control heating of the heat medium in accordance with the temperature of the heat medium measured by the temperature sensor.

Abstract: According to one embodiment, a power plant includes a solar heat collector which collects solar heat and then supplies the solar heat to a heat medium. The power plant includes a heat exchanger which changes a secondary medium into steam by heat exchange with the heat medium. The power plant includes a turbine. The power plant includes a temperature sensor which detects the temperature of the heat medium. The power plant includes and a controller which supplies the heat medium with heat obtained by the conversion of an output variation component having a period shorter than a predetermined value in electricity generated by a wind power generator when the temperature does not satisfy a predetermined condition associated with the driving of the turbine.

Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.

Abstract: A steam turbine plant of one embodiment includes a boiler to change water into steam, an upstream turbine including plural stages of rotor vanes and plural stages of stator vanes and to be driven by the steam from the boiler, a downstream turbine including plural stages of rotor vanes and plural stages of stator vanes and to be driven by the steam from the upstream turbine, a condenser to change the steam exhausted from the downstream turbine into water, a collector to collect water from, for example, the steam which exists upstream of an inlet of the final-stage rotor vane in the upstream turbine, and a collected matter path to cause collected matter in the collector to flow into, for example, the steam between an outlet of the final-stage rotor vane of the upstream turbine and an inlet of the final-stage rotor vane of the downstream turbine.

Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that produces steam and generates an exhaust gas, a first turbine that is rotationally driven by the steam, an absorption tower allows carbon dioxide contained in the exhaust gas to be absorbed into an absorption liquid, a regeneration tower that discharges the carbon dioxide gas from the absorption liquid supplied from the absorption tower, a condenser that removes moisture from the carbon dioxide gas, discharged from the regeneration tower, by condensing the carbon dioxide gas using cooling water, a compressor that compresses the carbon dioxide gas from which the moisture is removed by the condenser, and a second turbine that drives the compressor. The steam produced by the cooling water recovering the heat from the carbon dioxide gas in the condenser is supplied to the first turbine or the second turbine.

Abstract: A steam turbine plant of one embodiment includes a boiler to change water into steam, a high pressure turbine including plural stages of rotor and stator vanes and to be driven by the steam from the boiler, a reheater to heat the steam from the high pressure turbine, a reheat turbine including plural stages of rotor and stator vanes and to be driven by the steam from the reheater, a condenser to change the steam from the reheat turbine into water, a collector to collect water from, for example, the steam existing upstream of an inlet of the final-stage rotor vane in the high pressure turbine, and a path to cause collected matter in the collector to flow into, for example, the steam between an outlet of the final-stage rotor vane of the high pressure turbine and an inlet of the final-stage rotor vane of the reheat turbine.

Abstract: A power generating system includes a flow dividing structure, a first detector, a flow dividing adjusting valve, a heat accumulator, a heat exchanger and a turbine. The flow dividing structure divides a first heat medium into a first flow path and a second flow path. The first detector detects a flow rate of the first heat medium. The flow dividing adjusting valve opens the second flow path when the flow rate of the first heat medium exceeds a predetermined value. The heat accumulator accumulates the first heat medium via the second flow path and delivers the first heat medium at a temporally leveled flow rate. The heat exchanger transfers heat from the first heat medium to a second heat medium having a lower boiling point than the first heat medium. The turbine rotationally moves by the second heat medium with heat having been transferred by the heat exchanging unit.

Abstract: Electric power obtained by wind power generation is used effectively. A power generation system in an embodiment includes: a wind power generation apparatus; a solar thermal power generation apparatus; and an electrothermal converting unit. The solar thermal power generation apparatus includes: a heater heating a heating medium by solar heat; and a heat exchanger exchanging heat of the heating medium heated by the heater and heat of a working fluid to operate a drive mechanism of a power generator. The electrothermal converting unit converts part of electric power generated by the wind power generation apparatus into heat to heat the heating medium.

Abstract: The object of the present invention is to carry out a highly efficient power generation or to efficiently use an exhaust heat of a low temperature. A steam turbine plant includes a steam turbine 1 and a heating unit configured to heat a working fluid to be supplied to the steam turbine 1. The heating unit includes a first heat source 14 using a fossil fuel or a second heat source 8 using an extracted steam from the steam turbine 1, and a third heat source 44 not using a fossil fuel but using a waste exhaust combustion gas.

Abstract: A steam turbine plant of one embodiment includes a boiler configured to change water into steam, a high pressure turbine including a turbine or turbines connected to each other in series, and having a first inlet to supply the steam from the boiler, an extraction port located at a downstream of the first inlet, a second inlet to supply the steam extracted from the extraction port and located at a downstream of the extraction port, and an exhaust port located at a downstream of the second inlet, the high pressure turbine being configured to be driven by the steam supplied from the first and second inlets, an extraction steam heater configured to heat the steam extracted from the extraction port and to supply the heated steam to the second inlet, a reheater configured to heat the steam exhausted from the exhaust port, and a reheat turbine configured to be driven by the steam from the reheater.

Abstract: A steam turbine plant of one embodiment includes a solar energy collector configured to collect solar heat, a boiler configured to change water into steam by the solar heat, a high pressure turbine including a turbine or turbines connected to each other in series, and configured to be driven by the steam from the boiler, first to N-th reheaters, where N is an integer of two or more, and first to N-th reheat turbines, wherein the first reheater is configured to heat the steam exhausted from the high pressure turbine by the solar heat, and the first reheat turbine is configured to be driven by the steam from the first reheater, and the second to N-th reheaters are configured to heat the steam exhausted from the first to (N?1)-th reheat turbines by the solar heat, respectively, and the second to N-th reheat turbines are configured to be driven by the steam from the second to the N-th reheaters, respectively.

Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that produces steam and generates an exhaust gas, a first turbine that is rotationally driven by the steam, an absorption tower allows carbon dioxide contained in the exhaust gas to be absorbed into an absorption liquid, a regeneration tower that discharges the carbon dioxide gas from the absorption liquid supplied from the absorption tower, a condenser that removes moisture from the carbon dioxide gas, discharged from the regeneration tower, by condensing the carbon dioxide gas using cooling water, a compressor that compresses the carbon dioxide gas from which the moisture is removed by the condenser, and a second turbine that drives the compressor. The steam produced by the cooling water recovering the heat from the carbon dioxide gas in the condenser is supplied to the first turbine or the second turbine.

Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that produces steam and generates an exhaust gas, a first turbine that is rotationally driven by the steam, an absorption tower allows carbon dioxide contained in the exhaust gas to be absorbed into an absorption liquid, a regeneration tower that discharges the carbon dioxide gas from the absorption liquid supplied from the absorption tower, a condenser that removes moisture from the carbon dioxide gas, discharged from the regeneration tower, by condensing the carbon dioxide gas using cooling water, a compressor that compresses the carbon dioxide gas from which the moisture is removed by the condenser, and a second turbine that drives the compressor. The steam produced by the cooling water recovering the heat from the carbon dioxide gas in the condenser is supplied to the first turbine or the second turbine.

Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that generates steam and an exhaust gas, an absorption tower that allows carbon dioxide contained in the exhaust gas to be absorbed in an absorption liquid, a regeneration tower that regenerates discharges a carbon dioxide gas from the absorption liquid, a reboiler that heats the absorption liquid of the regeneration tower, a turbine that is rotationally driven by the steam, a condenser that generates condensate by cooling steam exhausted from the turbine, a compressor that compresses the carbon dioxide gas, and a cooler that cools the carbon dioxide gas, which has been compressed by the compressor, while using a part of the condensate as cooling water. The reboiler is supplied with steam from the turbine and steam generated by the cooling of the carbon dioxide gas at the cooler.

Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.

Abstract: According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that generates steam and an exhaust gas, an absorption tower that allows carbon dioxide contained in the exhaust gas to be absorbed in an absorption liquid, a regeneration tower that discharges a carbon dioxide gas from the absorption liquid supplied from the absorption tower, a reboiler that heats the absorption liquid of the regeneration tower, a turbine that is rotationally driven by the steam, a first condenser, a second condenser, and a desuperheater. The first condenser generates condensate by cooling steam exhausted from the turbine. The second condenser condenses the carbon dioxide gas while using a part of the condensate as cooling water, and generates hot water. The desuperheater lowers the temperature of the steam exhausted from the turbine by spraying the hot water, and supplies the steam at lowered temperature to the reboiler.

Abstract: According to one embodiment, a power plant includes a solar heat collector which collects solar heat and then supplies the solar heat to a heat medium. The power plant includes a heat exchanger which changes a secondary medium into steam by heat exchange with the heat medium. The power plant includes a turbine. The power plant includes a temperature sensor which detects the temperature of the heat medium. The power plant includes and a controller which supplies the heat medium with heat obtained by the conversion of an output variation component having a period shorter than a predetermined value in electricity generated by a wind power generator when the temperature does not satisfy a predetermined condition associated with the driving of the turbine.

Abstract: In one embodiment, a power generating system includes; a flow dividing unit configured to divide a first heat medium supplied thereto to a first flow path and a second flow path; and a heat accumulating unit configured to accumulate the first heat medium sent thereto via the second flow path and deliver the first heat medium at a temporally leveled flow rate. The system further includes: a heat exchanging unit configured to transfer heat from the first heat medium sent thereto via the first flow path and the first heat medium delivered thereto from the heat accumulating unit, to a second heat medium that is lower in boiling point than the first heat medium; and a turbine configured to rotationally move with the second heat medium to which heat has been transferred by the heat exchanging unit.