249results about "From solar energy" patented technology

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a conventional lower-temperature heat source to boost the temperature of a thermal power cycle working fluid to a turbine, thereby increasing efficiency of the power cycle.

The invention discloses a heat collection-heat storage system flow regulation and control method for improving the flexibility of a light-coal-storage complementary power generation system. The light-coal-storage complementary power generation system comprises a coal-fired power generation unit and a heat collection-heat storage system. With the control targets of coping with solar fluctuation and meeting the rapid load change requirement of the light-coal-storage complementary power generation system, the actual value of the mass flow of a working medium on the heat collector side is calculated and adjusted by collecting the solar radiation intensity and the operation data of the light-coal-storage complementary power generation system; the change rate of the water supply mass flow entering the working medium-water heat exchanger is calculated on line according to the variable quantity required by the working capacity of unit steam, and the actual value of the water supply mass flow entering the working medium-water heat exchanger and the actual value of the working medium mass flow of the working medium-water heat exchanger side are adjusted; and after the variable load instruction is finished, a model prediction control algorithm is adopted to update the actual values of the feed water mass flow entering the working medium-water heat exchanger and the working medium mass flow on the working medium-water heat exchanger side. The method can improve the operation flexibility of the system and is simple to operate.

The invention discloses a solar energy and geothermal energy storage combined power generation system based on sCO2. The solar energy and geothermal energy storage combined power generation system comprises a solar heat collection unit, a geothermal energy injection and exploitation unit, a geothermal reservoir unit and an integrated power generation unit. The solar heat collection unit is used for collecting solar energy, heating sCO2 through the collected solar energy and outputting the heated sCO2. The geothermal energy injection and exploitation unit is used for transmitting the heated sCO2; the geothermal reservoir unit is used for storing the heated sCO2 transmitted by the geothermal energy injection and exploitation unit; and the integrated power generation unit is used for acquiring the sCO2 in the geothermal reservoir unit and performing power generation treatment through the acquired sCO2. The invention further discloses a solar energy and geothermal energy storage combined power generation method based on sCO2. The sCO2 is used as a circulating medium, so that the energy conversion efficiency of the whole power generation system is improved; and meanwhile, the problems of regional imbalance and insufficient intermittency existing in solar energy utilization are solved by selecting a mode of combining solar energy and geothermal energy.

The invention provides a photo-thermal direct-heating supercritical carbon dioxide power generation system, belongs to the technical field of supercritical carbon dioxide power generation, and can at least partially solve the problems that the highest temperature of existing fused salt heat storage is about 560 DEG C, the temperature of a heat storage system is low, and the power generation efficiency of supercritical carbon dioxide circulation is limited. The system comprises a photo-thermal conversion module, a pipeline module, a fused salt energy storage module, a water energy storage module and a power generation module, and is provided with a photo-thermal collector, so that the power generation module is directly heated by photo-thermal, the temperature of a working medium in the daytime heat collection period can be directly increased, the efficiency of a supercritical carbon dioxide circulating system is improved, and meanwhile, the heat storage function is taken into account; a more reasonable power generation mode is achieved, and the overall economical efficiency of the system can be improved.

To provide a nuclear power plant and a method for generating power in a nuclear power plant which can improve the load following property of a nuclear power generation plant and can further stabilize the output of a nuclear reactor.SOLUTION: The nuclear power plant having a nuclear reactor includes: an output control unit 70 for controlling the opening degree of an air extraction valve 13 according to a load request; and an energy storage unit for storing renewable energy. The output control unit 70 controls the temperature of water to supply to the nuclear reactor on the basis of the opening degree of the air extraction valve 13 and the amount of stored energy in the energy storage unit.SELECTED DRAWING: Figure 1

To provide a solar thermal power generation system with improved power generation efficiency. [Solution] The solar thermal power generation device comprises a pipeline, a concentrating mirror section that heats and expands the air in the pipeline, a first chamber and a second chamber connected to the pipeline through which the air is supplied, a switching valve capable of switching between state A1, in which the pipeline and the first chamber are connected, and state A2, in which the pipeline and the second chamber are connected, an output shaft, a generator that generates electricity by the rotation of the output shaft, a first turbine section and a second turbine section that, when the rotational speed of the air rotating in the rotational direction is greater than the rotational speed of the output shaft, are rotated together by a ratchet mechanism and the rotational force is transmitted to the output shaft, and when the rotational speed is less than the rotational speed of the output shaft, the ratchet mechanism causes the output shaft to spin freely, and a control section that alternately switches the switching valve.

The invention aims to provide a photovoltaic-hydrogen energy comprehensive circulation and heat energy utilization device, which belongs to the field of clean energy heat energy utilization and comprises a photovoltaic energy storage system, a proton exchange membrane electrolytic cell hydrogen production system, a solid hydrogen storage system, a proton exchange membrane fuel cell power generation system and a heat energy recycling system. The photovoltaic energy storage system converts solar energy into electric energy to provide driving power for the proton exchange membrane electrolytic cell hydrogen production system, the proton exchange membrane electrolytic cell hydrogen production system produces hydrogen and stores the hydrogen in the solid hydrogen storage system, and the proton exchange membrane fuel cell power generation system uses the hydrogen in the solid hydrogen storage system as fuel to generate electric energy and generate water. And heat energy collected by the proton exchange membrane electrolytic cell hydrogen production system and the photovoltaic energy storage system is combined to provide high-temperature steam for the heat energy recycling system.

The application discloses a kind of solar energy cascade utilization liquid air energy storage system and its operating method, the system includes liquid air energy storage system, photo-thermal power generation system and organic rankine cycle power generation system.In the low valley of electricity and light, photo-thermal power generation system generates electric energy, part is used to drive liquid air energy storage subsystem for supply load.The system uses air liquefaction and expansion cycle to realize energy storage, and converts excess electric energy into liquid air storage.In the peak of electricity, the system releases energy, and produces electric energy by gasification and expansion liquid working medium, and uses photo-thermal heat in the form of series, parallel heat exchange to heat working medium, realizes energy cascade utilization, solves the problem of low efficiency of expander when liquid air releases energy.The system can make full use of the peak shaving potential of liquid air energy storage, organically combines the thermal energy and electric energy of photo-thermal system, is conducive to improving overall energy conversion efficiency, realizes all-weather renewable energy utilization.

A method of forming a concentrated solar power system for generating electricity. The method has three steps. The first step is coupling a plurality of tower segments together onsite at a solar energy concentration field to form a solar tower in a lowered orientation. At least one solar receiver is coupled to the solar tower to form a solar tower assembly. The second step is raising the solar tower assembly to a solar energy collection orientation by pivoting the solar tower assembly about a pivot axis located at a bottom portion of the solar tower. The third step is securing the solar tower assembly in the solar energy collection orientation.

The embodiment of the invention provides a coupled double-tank active solar photo-thermal boiler complementary five-stage steam supply system. The coupled double-tank active solar photo-thermal boiler complementary five-stage steam supply system comprises a coal-fired power generation unit and a water supply regenerative system, wherein the coal-fired power generation unit comprises a boiler, a steam turbine high-pressure cylinder, a reheater, a steam turbine intermediate-pressure cylinder and a steam turbine low-pressure cylinder which are connected in sequence; the tower type solar photo-thermal system comprises a low-temperature molten salt tank, a solar heat collection tower and a high-temperature molten salt tank which are connected through a molten salt pump and a pipeline; an outlet of the high-temperature molten salt tank is sequentially connected with hot-side molten salt inlets of the main heat exchanger and the second-stage heat exchanger through a molten salt pump, and a cold-side molten salt outlet of the second-stage heat exchanger is connected to the low-temperature molten salt tank; a water supply inlet of the main heat exchanger is connected with a boiler water supply pipeline, and a steam outlet is connected to a boiler main steam system; a feed water inlet of the second-stage heat exchanger is connected with an outlet of a pressurizing water pump, an inlet of the pressurizing water pump is connected to a condensed water pipeline of an outlet of the deaerator, and a steam outlet of the second-stage heat exchanger is used for providing industrial steam supply of a first pressure grade.

The application discloses a capacity configuration method of a combined cooling, heating and power system of photovoltaic / photothermal / AA-CAES, which firstly establishes a model of a combined cooling, heating and power system of a micro integrated energy system containing AA-CAES, and then solves the model by adopting a double-layer planning method. In the double-layer planning method, the upper layer plans the configuration of capacity with the minimum sum of capacity configuration cost and scheduling cost of the lower layer as the target, the lower layer uses the parameters of the upper layer to schedule the lower layer model according to seasons, with the minimum sum of energy supply cost and carbon dioxide treatment cost as the target, and returns the scheduling result to the upper layer to assist the decision of the upper layer capacity. The method considers the capacity of the compressed air energy storage system of the combined cooling, heating and power system, and establishes a model suitable for capacity planning and scheduling. Simulation results prove that the double-layer planning method can obtain appropriate capacity configuration and energy scheduling.

The invention discloses a heat supply and power generation system coupled with molten salt heat storage to improve the flexibility of a thermoelectric load and an operation method. The heat supply and power generation system comprises a multi-source heat source module, a molten salt heat storage and release module, a steam power generation module, a graded heat supply module, a multi-medium heat exchange module and an intelligent regulation and control module. The multi-source heat source module comprises a pulverized coal boiler of a main heat source unit and a solar trough heat collector array and a biomass circulating fluidized bed boiler of an auxiliary heat source unit; the molten salt heat storage and release module comprises a high-temperature heat storage tank, a low-temperature heat storage tank, a molten salt circulating pump, a molten salt make-up pump, a molten salt heater and a molten salt cooler. Through the collaborative design of the multi-source heat source module, the molten salt heat storage and release module, the steam power generation module, the graded heat supply module, the multi-medium heat exchange module and the intelligent regulation and control module, the thermoelectric coupling rigidity is broken through, and the load regulation flexibility is remarkably improved.

The invention relates to a photo-thermal coupling terrestrial heat power generation device. The photo-thermal coupling terrestrial heat power generation device comprises a photo-thermal assembly, a power generation assembly coupled with the photo-thermal assembly through a first heat exchanger and a terrestrial heat assembly coupled with the photo-thermal assembly through a second heat exchanger. The geothermal assembly comprises a sleeve inserted into the target stratum and a heat insulation pipe arranged in the sleeve, and an annular space communicated with the power generation assembly is formed between the sleeve and the heat insulation pipe. Wherein the photo-thermal assembly is constructed to be capable of transmitting heat to the power generation assembly and the geothermal assembly through the first heat exchanger and the second heat exchanger respectively, so that the geothermal assembly conveys a heated heat-conducting medium to a target stratum through an annulus; therefore, the geothermal assembly can convey the heat-conducting medium at the target stratum to the power generation assembly when the heat transferred to the power generation assembly by the photo-thermal assembly is smaller than the heat required by the power generation assembly. Therefore, an underground aquifer or other geological structures can be used as an energy storage medium, the energy storage period is prolonged, the operation cost is reduced, and the continuity and stability of power generation are effectively improved.

The application discloses a kind of power generation systems based on friction nanogenerator, including photo-thermal power generation system, heat storage system and friction nanogenerator component.This system is a kind of comprehensive power generation system that TENG wind power generation system is combined with photo-thermal power generation system, the application will large-area TENG power generation system be arranged in solar photo-thermal power station reflector back with array distribution, saves the support part investment of TENG power generation system.Meanwhile, the electric energy of TENG power generation is directly converted into heat energy storage and is stored in the molten salt energy storage system matched with photo-thermal, realizes the energy storage function of wind power generation, and does not need to increase energy storage investment, saves the investment of downstream power transmission and transformation equipment, inverter and other equipment equipped with TENG power generation system, finally, due to the energy storage of TENG power generation system contribution, mirror field area of photo-thermal power generation system can be reduced, and the investment of photo-thermal power station itself will be reduced.

The application discloses a satellite temperature difference power generation system and a control method based on carbon dioxide phase change closed loop, and belongs to the technical field of spacecraft energy sources. The system comprises a phase change shell arranged on a satellite, a gasification cavity and a crystallization cavity are arranged in the phase change shell, the gasification cavity is located in a direct sunlight area, and the crystallization cavity is located in a shadow area; two one-way valves are arranged between the gasification cavity and the crystallization cavity, one of the two one-way valves allows gas in the gasification cavity to blow to the crystallization cavity, and the other one-way valve allows gas in the crystallization cavity to blow to the gasification cavity; two power generation units are arranged in the gasification cavity and the crystallization cavity respectively, and the gas blown from the one-way valves makes the power generation units produce mechanical movement and generate power; a turnover mechanism is connected with the phase change shell and is used for turning over the phase change shell by 180 DEG, so that the crystallization cavity is located in the direct sunlight area, and the gasification cavity is located in the shadow area. The application utilizes natural temperature difference of a satellite orbit to drive carbon dioxide phase change to work, and completes a closed loop through 180 DEG turnover of the phase change shell, so that continuous power generation is realized.

Systems related to concentrated solar combination heating and power generation; solar heating; industrial heat driven power generation; thermal storage systems and heat exchanger and power generation systems therefore, including any of the above with optional supplemental fuel production, and associated methods, are generally described.

The application discloses a solar cross-season soil energy storage heating and power generation integrated system based on an expansion compressor, and the system comprises a working medium pump, a solar collector, an evaporator, an expansion compressor, a permanent magnet motor, a condenser and a buried pipe. In the power generation mode, the working medium pump is opened; heat generated by the solar collector enters the evaporator to evaporate liquid refrigerant; gaseous refrigerant drives the expansion compressor to work and drives the permanent magnet motor to generate electricity; gaseous refrigerant after work enters the condenser to exchange heat with circulating water in the buried pipe and is condensed; heat not converted into electric energy is stored in the soil through the buried pipe; and liquid refrigerant after condensation is pumped back to the evaporator by the working medium pump. In the heating mode, the permanent magnet motor is electrified and drives the expansion compressor; heat generated by the solar collector and soil heat extracted by the buried pipe jointly enter the evaporator to evaporate liquid refrigerant; gaseous refrigerant is compressed into high-temperature gaseous refrigerant by the expansion compressor and then enters the condenser to exchange heat with a user end heating pipe network and is condensed; and liquid refrigerant after condensation flows into the evaporator after pressure reduction by an expansion valve.

A solar energy auxiliary combined heat and power system and operation method, the system comprises a boiler, a high, medium and low pressure cylinder of a steam turbine, a condenser, a heat recovery system connected in sequence; further comprising a trough type solar heat collection system, a high and low temperature heat storage tank, an oil-water heat exchanger, a peak heater, a waste heat heater, an auxiliary heater, an absorption heat pump and various valves. During the daytime power peak and heat valley period, the solar energy drives the absorption heat pump and the peak heater, recovers the steam turbine exhaust and the waste heat of the heat network return water, under the premise of meeting the heat supply load, auxiliary improves the steam turbine power output; the excess solar heat is stored through the high temperature tank. During the night power valley and heat peak period, the high temperature tank releases heat to drive the absorption heat pump and the peak heater to recover the steam turbine exhaust and the waste heat of the heat network return water, which is used for heat supply of the heat network. The present application realizes the pure condensing condition operation of the combined heat and power unit in the heating season, and greatly improves the power output of the unit in the power peak period, and the peak regulation capacity is obviously improved.

Device (1) for receiving a volume flow of a medium which, in the solidified state, forms an ionic crystal structure, comprising at least one wall surface (10) which limits the volume flow (3) at least on one side, wherein the wall surface (10) has convex shape elements (20), wherein the device (1) for receiving a volume flow is a tube on the inner wall of which the convex shape elements (20) are arranged, characterized in that each convex shape element (20) has a cross-sectional area in its plane of section perpendicular to the plane of the surface (11) of the wall surface (10) and through its vertex (21) and along the longitudinal direction of the tube, which is bounded by an arc-shaped edge (22) and an edge connected to the arc-shaped edge (22) which is designed as a tangent (23), wherein the edge designed as a tangent (23) transitions into the surface (11).

The provided is an electricity generation system which utilises both solar energy and magma energy to generate electricity. The electricity generation system includes a condenser containing refrigerant inside, a pump connected to the condenser, a heat exchanger connected with the pump, heater pipes, a compressor, an air filter II, an air filter I, cooler pipes, and a turbine.

An electricity generation system including an electricity generating plant with a turbine, a dynamo and a solar power plant having an absorber tube for a parabolic trough solar power plant that includes a glass pipe which extends from a first end to a second end of a parabolic trough, a helical pipe enclosed within the glass pipe. A sand filled pipe is surrounded by the helical pipe. An inner pipe extends from the first end to the second end of the parabolic trough along the central axis of the glass pipe. A solenoid valve is configured to block the water from entering the inner pipe when the solenoid valve is closed and release the water to the inner pipe when the solenoid valve is opened. The turbine is fluidly connected to the solar power plant to receive the steam and produce mechanical energy which rotates the dynamo.

This invention discloses a system and method for improving the output of a linear Fresnel molten salt solar thermal power plant, comprising a low-temperature molten salt tank, a high-temperature molten salt tank, a medium-temperature molten salt buffer tank, a linear Fresnel solar collector field, a low-temperature temperature regulating pump, a medium-temperature temperature regulating pump, a low-temperature molten salt pump, and a high-temperature molten salt pump. During the power plant startup or low-irradiation phase, the medium-temperature molten salt at the collector field outlet that has not reached the target temperature is temporarily stored in the medium-temperature molten salt buffer tank to prevent the medium-temperature molten salt from mixing into the high-temperature molten salt tank and causing a decline in the quality of the high-temperature molten salt. During the high-irradiation phase, the qualified high-temperature molten salt is introduced into the high-temperature molten salt tank. Simultaneously, the medium-temperature molten salt in the buffer tank is mixed with the low-temperature molten salt from the low-temperature molten salt tank according to a calculated ratio, and after temperature adjustment, it is pumped back into the collector field for secondary heating to reach the qualified high-temperature molten salt. This ensures that high-quality superheated steam is provided to the turbine during peak irradiation periods, ultimately improving the annual power generation of the power plant, especially the unit's operating rate and output level in winter.

The invention discloses a micro-grid optimization scheduling method containing interface solar steam power generation and wave energy power generation. The method comprises the following steps: establishing an interface solar steam power generation device discretization model and a wave energy power generation fitting model; with electrical load, hydrogen demand and water demand as the core, electric energy storage and hydrogen storage are considered in a combined manner, and a micro-grid optimization model containing interface solar steam power generation and wave power generation is established; establishing constraint conditions of the micro-grid optimization model; performing simulation calculation in different scenes; and testing the system stability under extreme working conditions. According to the scheduling method, the dual dilemma of energy shortage and fresh water shortage in the island region can be solved, the dependence on traditional energy can be reduced, the energy transportation cost and the environmental risk are reduced, and the energy utilization efficiency and the environmental friendliness are improved.

The application provides a system and method for hydrogen production by coupling compressed air energy storage, solar energy and geothermal energy, wherein stored compressed heat heats high-pressure air to expand and do work during energy release, thereby improving system efficiency; solar energy and compressed heat not used after energy release enter an organic Rankine cycle. Condensation heat of the organic Rankine cycle, heat carried by gas produced by hydrogen production by electricity, and exhaust heat of the energy storage system provide cold and heat loads for users, realize energy cascade utilization, meet the multi-element demand of user loads, and the water inlet of the water electrolysis system is heated by the geothermal unit, thereby reducing the power consumption of preheating, and the vortex generated when the water inlet acts on the stirrer and the water outlet enhances the disturbance of water electrolysis; a temperature control valve controls the dynamic adjustment of water temperature, thereby ensuring safe and efficient operation of the system; the compressed heat not used after energy release and solar energy are converted into high-grade chemical energy, thereby improving system utilization, solving the problem of carbon emission accompanying traditional hydrogen production, and obtaining truly green hydrogen.

An energy storage system (TES) converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the TES provides higher-temperature heat through non-combustible fluid to an alumina calcination system used to remove impurities or volatile substances and / or to incur thermal decomposition to a desired product.

A portable human performance, renewable clean energy generator and pollution control system, with devices and associated methods to create mechanisms, paralleling organic flower plants for users to quickly harness it to improve their human performance. Knowing what mechanisms in a system should not operate at what times is crucial to force multiplying limited resource inputs. A tipping points arbitrage predictive model method leverages all mechanisms' operations toward specific needs of users, bending supply to meet demand, reducing waste and increasing output, whether in energy or human performance. Especially for disasters, when electricity is less reliable and portable generators are often used yet emit dangerous levels of carbon emissions, and even at low levels reduce human performance. This invention harnesses primarily heat, not fossil fuels. Synergistically, chemicals used for human performance provide heat, helping reach advantageous renewable energy tipping points, while reducing risk of adversely exceeding human performance tipping points.

A thermal energy storage system with fluid flow insulation, the system including heated thermal storage blocks positioned within a housing, and a method for operating the thermal energy storage system, including providing a flow of fluid into the housing, the fluid convectively extracting heat from a top region, a side region and a bottom region of the thermal energy storage system, to generate heated fluid that insulates the thermal storage blocks from the housing and a foundation of the thermal energy storage system.

The solar thermal power generation system includes a thermal energy storage container containing a thermal mass composition capable of storing thermal energy, a solar energy collection system, and a power generation system. The collection system comprises a first closed-flow loop including a solar thermal collector that absorbs solar energy to heat a first working fluid. The heated first working fluid is recirculated through the first closed-flow loop to heat the thermal mass composition. The power generation system consists of a second closed-flow loop including a turbine generator. The second closed-flow loop recirculates the second working fluid through the thermal mass composition, absorbing thermal energy to heat the second working fluid, which is then fed to a turbine to generate electricity in the generator. The second working fluid is water / steam or a compressible gas. The thermal mass composition consists of a mixture of a phase-change material, such as a salt, and a metallic material.

To construct a solar thermal power generation system by using a thermoelectric conversion element requiring no temperature difference.SOLUTION: There is provided a power generation system including a thermal collector tube, in which the thermal collector tube includes a thermoelectric conversion element, the thermoelectric conversion element has a flat plate shape, and the thermoelectric conversion element is housed inside the thermal collector tube.SELECTED DRAWING: Figure 1