A method for generating a steam cycle at a pressure around 200 bars and a temperature around 600° C., using an industrial steam generator with a solar receiver admitting an incident solar flux around 600 kW/m.sup.2, includes: generating a water-steam mixture in the evaporator by transferring heat from the incident solar flux onto the evaporator; separating the water-steam mixture into saturated water and saturated steam in the separator drum, the saturated steam having a pressure from 160 to 200 bars and a temperature from 347 to 366° C.; injecting the feed water into the mixing drum, where it is mixed with the saturated water from the separator drum, the mixed water next returning toward the evaporator via the return pipe provided with the circulation pump, such that the temperature of the mixed water entering the evaporator is below the saturated steam temperature, by a value from 5 to 15° C.

A solar chemically recuperated gas turbine system includes an exhaust-gas reformer, a solar reformer and a gas turbine unit with a combustion chamber. The reaction outlet of the exhaust-gas reformer is connected to the inlet of the solar reformer, the flue gas side inlet of the exhaust-gas reformer is connected to the exhaust-gas outlet of the gas turbine. The solar reformer outlet is connected to the combustion chamber inlet. Combustion gas drives the gas turbine after fuel burns in the combustion chamber, and the exhaust gas enters the exhaust-gas reformer. Fuel and steam are mixed and enter the reaction side of the exhaust-gas reformer through a fuel inlet. A reforming reaction between the fuel and steam under heating of the exhaust gas generates syngas. A further reforming reaction occurs by absorbing concentrated solar energy after the syngas enters the solar reformer, and the reactant is provided to combustion chamber.

The invention relates to a method and to a steam power plant, wherein solar energy can be very flexibly and very efficiently coupled into the water steam circuit of the steam power plant.

Method for operating a solar installation. The solar installation includes a solar field with direct evaporation accompanied by the generation of superheated live steam, a turbine for expanding the live steam, and a generator driven by the turbine for generating electrical energy. At least one valve is associated with the turbine by which the amount of live steam fed to the turbine is adjusted. The valve, or each valve, through which the amount of live steam fed to the turbine is adjusted such that an actual value of a live steam pressure occurring upstream of the turbine follows a reference value determined depending on a live steam temperature of the live steam upstream of the turbine.

In general, in one aspect, the invention relates to a system to create vapor for generating electric power. The system includes a vessel comprising a fluid and a complex and a turbine. The vessel of the system is configured to concentrate EM radiation received from an EM radiation source. The vessel of the system is further configured to apply the EM radiation to the complex, where the complex absorbs the EM radiation to generate heat. The vessel of the system is also configured to transform, using the heat generated by the complex, the fluid to vapor. The vessel of the system is further configured to sending the vapor to a turbine. The turbine of the system is configured to receive, from the vessel, the vapor used to generate the electric power.

A hybrid steam power plant is disclosed using the steam generator as a sub-construction for a solar receiver.

Supply assembly for a turbine of a solar thermodynamic system provided with plural multiple parabolic mirrors for heating a first thermal carrier fluid contained in a tank to a first temperature, comprising a column structure provided at the upper part with an exit. The column structure comprises: a lower portion provided with two inlets connected to the tank to be supplied with the first thermal carrier fluid, the lower portion comprising first and second heat exchangers supplied with a second thermal carrier fluid respectively to an overheated temperature and re-overheating temperature; an upper portion fluidically connected with the lower portion, the upper portion comprising a boiler to bring the second fluid from a pre-heating temperature to a boiling temperature, and a cylindrical body arranged on the boiler; a pre-heating and supplying structure for heating the second thermal carrier fluid to the pre-heating temperature and supply it to the column structure.

A solar aided coal-fired power generation system participating in primary frequency regulation and a control method thereof propose a system configuration with two regulation schemes by coupling medium-low-temperature solar collectors and a coal-fired generation unit. The two regulation schemes are a high-pressure feedwater bypass scheme and a low-pressure condensate bypass scheme. The present invention formulates a primary frequency regulation control logic, so as to efficiently and accurately participate in the primary frequency regulation, thereby keeping the power grid frequency rapidly stable. The present invention also formulates a working fluid outlet temperature control logic for the solar aided coal-fired thermal system, which adjusts a heat exchange working fluid flow of the solar collectors to ensure that the temperature in each section is stable during the primary frequency regulation. The present invention uses operation matching of the turbine system and the solar collectors to improve effectiveness of the primary frequency regulation.

Methods and apparatus for concentrating electromagnetic waves coming from a moving source at a focal point fixed to the ground. The invention discloses a tracking system for a device capable of concentrating incoming electromagnetic waves at a fixed focal point. This concentration of the electromagnetic waves may be done by reflection, as in the case of a reflecting dish, or by refraction as in the case of a concentrating lens, which is impeded in a hemisphere, which can be real or imaginary, such that its focal point coincides with the center of the hemisphere and using this apparatus to track such moving source by rotating around said hemisphere's fixed center, so as to face the incoming electromagnetic rays normally. A receiver can be kept at the focal point of the device which uses the concentrated rays for various applications such as melting metals or charging a solar cell.

A closed loop system utilizing a solar refrigerant turbocharger and pump in conjunction with a solar collector to operate a heating and cooling system for a building by utilization of a renewable energy source. The liquid pump within the solar turbocharger is used to boost the refrigerant pressures into the solar collector, the refrigerant absorbs heat inside the solar collector and changes phase from a liquid to a vapor. The vapor is expanded across the turbine causing the turbine to spin. The ability of the refrigerant to change phase or flash from a liquid to a vapor is due to the solar energy that is transferred from evacuated tubes into the solar collector manifold and into the refrigerant. The gas is routed to the solar turbo pump turbine to drive the compressor and liquid pump. The resulting fluid gas leaving the turbine is routed to the condenser for normal operation.