456results about "From solar energy" patented technology

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, there are thermal energy storage units that provide existing power plants with greater system efficiency, safety, and reduced fuel consumption.

The invention relates to the technical field of solar heat utilization, and discloses an electric energy conversion and power regulation and control method based on a solar heat exchange coupling system, which comprises the following steps: calculating the phase change latent heat release rate and pressure and temperature sensitivity of a working medium in real time through a nonlinear prediction model, and establishing a compensation factor to dynamically correct the fusion weight of temperature and pressure signals; the shape memory alloy runner is driven to adjust the branch angle in a self-adaptive mode within the range of 45-75 degrees; constructing an energy potential matching matrix of the temperature gradient of the heat storage module and the output voltage of the power generation system, and combining a pulse type energy release strategy to maintain power stability; and controlling adjacent flow channel branches to generate a phase difference based on pressure fluctuation spectrum characteristics to realize fluctuation offset. According to the method, through closed-loop control of thermodynamic parameter compensation and flow channel dynamic adjustment and space-time collaborative optimization of energy potential matching and pulse release, continuous and stable power generation under the intermittent irradiation condition is achieved, the overall energy efficiency of the system is improved, and operation is more stable.

A hybrid power generation system in one embodiment comprises a green boiler containing a thermal mass composition operable to store thermal energy, a solar energy collection system which absorbs solar energy to heat a first working fluid and in turn the thermal mass composition, and a power generation system comprising a steam turbine coupled to an electric generator to produce electricity and a nuclear steam supply system which convert a second working fluid comprising water from liquid to steam. Steam output by the nuclear steam supply system flows through the green boiler and is heated by absorbing heat from the thermal mass composition to increase the enthalpy of the steam and concomitantly electric power output from the turbine-generator. The nuclear steam supply system and green boiler may be retrofit to replace existing fossil fuel steam generation systems while retaining the energy conversion part of the fossil power plant.

Provided is a power generation system and method based on compressed air energy storage technology through solar auxiliary hot humid air. The system comprises an energy storage subsystem, a solar heat storage subsystem, and a turbine generator subsystem which are connected in sequence. The energy storage subsystem includes a motor, a compressor, and an air storage tank which are connected in sequence. The solar heat storage subsystem includes a solar heat collector and a solar heat exchanger. The solar heat collector and the solar heat exchanger are connected through a heat transfer oil circulation loop. The system compresses and stores compressed air using the electricity of the power grid when an electrical load is within a low valley, releases the compressed air when the electrical load is within a peak, and heats and humidifies the air before entering the turbine using the recovered compression heat and solar energy.

The invention belongs to the technical field of solar power generation, and particularly relates to a solar photo-thermal power generation and supply system, which comprises a self-adaptive condensation tracking module for outputting stable high-temperature heat flow through multi-stage reflector array cooperative tracking and focus decentralized control; the layered cascade heat storage module receives the high-temperature heat flow and stores the high-temperature heat flow to different areas according to temperature grades; the multi-source cooperative power generation module receives heat energy and cooperatively generates power through multiple systems; the intelligent load prediction scheduling module generates a load prediction result and formulates a power generation scheduling plan; the system self-optimization evolution module monitors operation parameters, parameter self-adaption adjustment and strategy improvement are achieved, the solar energy utilization efficiency is remarkably improved, and the direct solar energy utilization rate is increased to 25% from 20%.

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.

A hybrid solar chimney to provide energy gain, wherein at least one chimney (2) which the suction-draft process (vacuum effect) is created of the air whose density is reduced by the horizontal wing (11) and at least one greenhouse (3) to heat the air in the chimney (2).

The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circuit.

The invention discloses a seawater desalination and electrolytic hydrogen production integrated system and method based on LNG (Liquefied Natural Gas) cold energy recovery and solar-assisted ORC (Organic Rankine Cycle) power generation. The solar heat collection subsystem is connected with the organic Rankine cycle power generation subsystem in a heat exchange mode, the organic Rankine cycle power generation subsystem is internally provided with a first-stage heat exchange mode and is connected with the LNG cold energy utilization subsystem in a heat exchange mode, and the LNG cold energy utilization subsystem is connected with the frozen sea water desalination subsystem through a heat exchanger. The LNG cold energy utilization subsystem is in transmission connection with the electrolytic hydrogen production unit through the heat exchanger; the method comprises two working processes of seawater desalination and hydrogen production. According to the invention, a multi-energy complementary comprehensive energy system capable of simultaneously realizing two modes of seawater desalination and hydrogen production is formed, the stability and reliability of the system are improved, a seawater desalination and hydrogen production system dependent on single energy is reduced, the energy utilization rate is high, the energy-saving effect is good, and'one water for two purposes' is realized.

The invention belongs to the technical field of heat storage, and provides a paired metal hydride storage tank heat storage system and method for solar power generation. Wherein the paired metal hydride storage tank heat storage system is respectively communicated with the solar concentrating system and the electric power system through a heat exchange medium pipeline; the paired metal hydride storage tank heat storage system is configured in a multi-stage tandem mode, and at least two stages of heat storage systems are sequentially arranged in the flowing direction of heat exchange fluid in the heat output process. Under the operation requirement higher than the threshold load, all levels of heat storage systems are in an activated state, heat exchange fluid flows through each level of system according to a preset path, and heat released by each level of heat storage system is absorbed step by step; and under the condition that the load is lower than the threshold value for operation or the set working condition requirement, at least one stage of heat storage system bypass directly obtains the needed heat from other stages of heat storage systems.

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. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.

According to the carbon cycle ammonia production system and method based on chemical-looping water splitting, in the carbon cycle ammonia production system based on chemical-looping water splitting, a chemical-looping carbon cycle nitrogen-hydrogen cogeneration module combines a fuel reactor and a high-temperature solid carbon dioxide electrolytic cell in a chemical-looping process, and hydrogen-nitrogen cogeneration with zero carbon emission is achieved. According to the Harbin process ammonia preparation module, multi-stage compression and intermediate cooling are carried out on raw material gas, the system energy consumption is reduced, and moisture used for a steam reactor is preheated. Then, a multi-stage reactor is adopted in the ammonia production process, heat recovery and raw material recovery are implemented, and a chemical chain product is efficiently converted into ammonia gas. The concentrating solar thermoelectric steam co-production module adopts molten salt as a working medium and is combined with a reheat return Rankine cycle containing a heat regenerator to meet the heat and electricity requirements of the system. The system utilizes a chemical-looping water splitting technology to prepare high-purity ammonia gas under a zero-carbon condition, and has the advantages of high efficiency, low emission, high resource utilization and the like.

The invention provides a wind resistance and vibration reduction system for large disc type solar thermal power generation, and relates to the technical field of solar thermal power generation, and the system comprises a wind load and structure monitoring module which is used for obtaining environment wind load data and structure response data in real time; the decision making module is used for making a wind resistance and vibration reduction strategy; the vibration reduction control module is used for adjusting the state of the vibration reduction structure; the wind regime prediction module is used for predicting a wind regime change trend; the state adjusting module is used for outputting a structure state adjusting instruction to the vibration reduction control module; and the fault detection and emergency module is used for identifying an extreme trend in the wind regime change trends and outputting an emergency protection instruction. According to the method, wind load and structural vibration characteristics are effectively extracted and analyzed, a wind resistance and vibration reduction strategy is dynamically formulated, an accurate vibration reduction control instruction is output, and the self-adaption and anti-interference capabilities of the system are improved; through fusion of ARIMA and LSTM prediction algorithms and combination of historical meteorological data and real-time wind load data, accurate prediction of short-term wind conditions is realized.

The invention relates to the technical field of solar power generation, in particular to a wind power-photo-thermal-photovoltaic integrated energy system. Comprising a wind power generation mechanism, the wind power generation mechanism comprises a tower, and a generator cabin and wind power blades are arranged at the top of the tower; the photo-thermal power generation mechanism comprises a heat collector installed in the middle of the tower barrel, a plurality of reflectors are arranged on the ground around the tower barrel, and the heat collector receives sunlight focused by the reflectors and heats heat conduction fluid. The photovoltaic power generation mechanism comprises a first photovoltaic cell assembly located on the peripheral wall of the tower drum, a second photovoltaic cell assembly located on the back face of the reflecting mirror and a third photovoltaic cell assembly located on the surface of the wind power blade. The reflecting mirror is used for reflecting sunlight to the heat collector or the first photovoltaic battery assembly; the wind power generation mechanism, the photo-thermal power generation mechanism and the photovoltaic power generation mechanism are all connected with the energy management system. Wind power, photo-thermal and photovoltaic are fully combined, the energy utilization efficiency is improved, power fluctuation is reduced, and the stability and adaptability of the system are enhanced.

A linear actuator and a method of operating is provided. The linear actuator includes a housing having at least one wall made from an electrochromatic material configured to transform from an opaque to a translucent material in response to a voltage. A plunger is slidably coupled to the housing to move between a first position and a second position. An actuator is disposed between the plunger and the housing, the actuator being made from a heat sensitive material, the actuator being configured to change a length of the actuator in response to a change in temperature.

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 discloses a vehicle-mounted air conditioning refrigeration house, an air conditioning method and a control system. The vehicle-mounted air conditioning refrigeration house comprises an air curtain pressure difference refrigeration system, and the air outlet end and the air return end of the air curtain pressure difference refrigeration system are arranged on the two sides in the house body so that air curtain pressure difference refrigeration of different modes can be conducted in the house body at different air conditioning stages. The air conditioning system is communicated with the interior of the warehouse body to carry out air conditioning treatment on the interior of the warehouse body; the high-voltage pulse electric field is communicated with the air conditioning system and the interior of the warehouse body so as to sterilize and deodorize gas in the warehouse body; the storage battery is arranged on the outer side of the refrigeration house body to supply power to the air-conditioning refrigeration house power utilization system; the sensor is arranged in the library body and is used for monitoring the environment in the library body and outputting detection data to the gas regulation control system; the gas regulation control system is used for controlling the refrigeration mode of the air curtain differential pressure refrigeration system and the starting of the gas regulation system and the high-voltage pulse electric field according to the detection data; the pre-cooling speed is high, the speed of constructing a modified atmosphere environment is high, and sterilization dead corners and storage tainting of odor do not exist.

The invention provides a multi-tower one-machine photo-thermal power generation system which is composed of five tower type heat collection systems, heat absorption towers in the five tower type heat collection systems are arranged in an isosceles trapezoid mode, and the heat absorption towers in the first tower type heat collection system, the second tower type heat collection system, the third tower type heat collection system, the fourth tower type heat collection system and the fourth tower type heat collection system are located at the four vertex positions of the isosceles trapezoid respectively. A heat absorption tower in the fifth tower type heat collection system is located at the midpoint position of the bottom edge of the isosceles trapezoid, and the first tower type heat collection system, the second tower type heat collection system, the third tower type heat collection system and the fourth tower type heat collection system are each composed of a heat absorption tower and a heliostat field. The fifth tower type heat collection system is composed of a heat absorption tower, a heliostat field, a steam generation system, a steam turbine generator set, a hot salt tank and a cold salt tank. The heat absorption tower is arranged on the south side of the center of a heliostat field; through the overall optimization of the layout of the multi-tower one-machine photo-thermal power generation system and the design of the pipeline length and the pipeline nominal diameter, the power generation efficiency of the whole multi-tower one-machine photo-thermal power generation system can be effectively improved, and the multi-tower one-machine photo-thermal power generation system always keeps high-efficiency operation; and meanwhile, the construction cost of the multi-tower one-machine photo-thermal power generation system can be effectively reduced.

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

A supercritical carbon dioxide cycle power generation system and method based on spectral modulation is described. The system consists of a solar heating section, a carbon dioxide storage section, a compression section, and a power generation section. The solar heating section includes a radiant heater and a field of mirrors; the carbon dioxide storage section includes an energy balancer (2); the compression section includes a drive motor, a compressor, a cooler, and a regenerator; and the power generation section includes a turbine and a generator. The present invention utilizes a spectral modulation coating to adjust the solar visible spectrum to the infrared band absorbable by carbon dioxide, and exploits the rapid temperature rise properties of solid particles absorbing solar energy. This allows the carbon dioxide to be rapidly heated to a high temperature through radiation-coupled convection before participating in the power generation cycle. A supercritical energy balancer is also provided to balance the intermittent nature of solar energy and to reuse abandoned electricity at night.

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 discloses a distributed new energy integrated deployment system combining gas turbine and optical storage, belonging to the field of gas turbine technology. The system includes a gas turbine, wherein the inner side of the gas turbine comprises a compressor, a combustion chamber, a turbine and a generator, and wherein the compressor and the combustion chamber are connected to a photothermal system. The exhaust end of the turbine is connected to a waste heat utilization system, and the output end of the generator is connected to a power supply system. The invention constitutes a distributed new energy comprehensive deployment system combining gas turbine and optical storage, which can realize efficient, clean, flexible, and economical energy supply, promote the wide application of renewable energy, and the transformation of energy structure.

A power generation mechanism that utilizes solar heat together with geothermal heat is equipped with a boiler and at least one pipeline generator unit. The lower end of the boiler is provided with an input pipe, which can extend deep into the ground to extract dry geothermal heat accumulated in the subterranean layer into the interior of the boiler. The upper end of the boiler is equipped with a solar heat collector, which transfers solar heat to the interior of the boiler to further heat hot water inside; in addition, the upper end of the boiler is connected to at least one output pipe, which can transport the heated water and steam to a pipeline generator unit. By directing hot water and steam through a power generation channel located between the upper water tank and the lower water tank of the pipeline generator unit, the generator unit in the power generation channel generates electricity.

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.