628results about "From solar energy" patented technology

The invention discloses a wind power-photovoltaic-photo-thermal cold power co-production system integrating heat pump energy storage and suitable for a large energy base, and belongs to the technical field of energy storage. A hot side outlet of a steam generator of the system is connected with an inlet of a second molten salt tank through a fourth molten salt pump, an outlet of the second molten salt tank is connected with an inlet of a first three-way valve through a second molten salt pump, and a first outlet of the first three-way valve is connected with an inlet of a heat collection tower. An outlet of the heat collecting tower is connected with a first inlet of a second three-way valve through a first molten salt pump; an outlet of the second three-way valve is connected with an inlet of a first molten salt tank; the compressor is connected with a hot-side inlet of the first heat exchanger, a hot-side outlet of the first heat exchanger is connected with an inlet of the turbine through a hot side of the second heat exchanger, and an outlet of the turbine is connected with an inlet of the compressor sequentially through a hot side of the third heat exchanger and a cold side of the second heat exchanger. According to the system, cold energy can be supplied to the outside through the heat pump energy storage system in the energy storage stage, cold and power cogeneration is achieved, and the comprehensive energy efficiency of the large energy base is improved.

The invention relates to the technical field of comprehensive energy management, and particularly discloses a comprehensive energy optimization scheduling system based on adaptive adjustment, which comprises a solar heat collection module, a heat storage module, a thermoelectric conversion module, a data acquisition module, an intelligent control module and an optimization scheduling module, solar energy is converted into heat energy; the heat storage module is used for storing heat energy generated by the solar heat collection module; the thermoelectric conversion module converts heat energy stored in the heat storage module into electric energy and provides the electric energy for a load. The data acquisition module is responsible for collecting key parameters related to system operation; the intelligent control module adaptively adjusts the operation parameters of the heat collector, the heat storage module and the thermoelectric conversion module to ensure the stable operation of the system; the optimization scheduling module establishes a supply optimization model, optimizes energy supply, establishes a load model, predicts future power load demands, reduces energy waste and improves the energy utilization rate.

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.

An energy storage system (TES) converts variable renewable electricity (VRE) to continuous heat at over 900° 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, thermal energy storage systems are used to improve efficiency and reduce carbon emissions associated with processing materials or other industrial applications.

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 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.

The invention relates to a natural gas differential pressure power generation system utilizing photo-thermal heating and a using method, the system comprises a natural gas excess pressure utilization loop, a cooling water circulation loop and a solar heat collection lifting loop, and the natural gas excess pressure utilization loop comprises a first natural gas heat exchanger, an expansion power generator, an air temperature type gasifier and a second natural gas heat exchanger; the cooling water circulation loop comprises a cooling water tank, a first water heat exchanger, a tee joint and a flow control valve; the second natural gas heat exchanger is connected between the cooling water tank and the flow control valve. The first natural gas heat exchanger is connected with the tee joint and the cooling water tank. The solar heat collection lifting loop comprises a refrigerant compressor, a refrigerant J-T valve, a solar heat collector, a circulating water pump and a hot water storage tank; the hot water storage tank, the refrigerant compressor, the first water heat exchanger and the refrigerant J-T valve are sequentially and circularly connected; solar heat collection heat energy is utilized to heat a natural gas pipeline for power generation, the risk of ice blockage of the pipeline of a power generation system caused by hydrates is reduced, and efficiency is improved.

A solar collector that comprises a conduit for a working fluid, and a parabolic trough reflector arranged to focus reflected sunlight onto the conduit. The parabolic trough reflector is arranged to pivot around the conduit.

A concentrated solar power storage system and method convert water into water vapor by the solar thermal energy, and the water vapor further operates a hydroelectric power generation system with a water storage (or an energy storage capsule) through a repeated conversion process.

The invention belongs to the technical field of carbon dioxide energy storage, and particularly relates to a supercritical carbon dioxide energy storage system with combined cooling, heating and power, which realizes combined cooling, heating and power by recycling waste heat of a combined cooling, heating and power system and improves the energy utilization rate of the system. Carbon dioxide generated by the combined cooling heating and power system is captured and stored in the exhausted oil and gas reservoir high-pressure gas chamber and the exhausted oil and gas reservoir low-pressure gas chamber through the carbon dioxide capturing system, energy is stored through the stored carbon dioxide gas, and the stability maintaining effect on electric energy is achieved while carbon emission is reduced. The energy release unit is in heat exchange connection with the carbon dioxide capture system, the temperature of high-pressure carbon dioxide in the energy release stage is increased, and the comprehensive energy utilization rate and efficiency of the system are further improved.

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%.

The invention relates to a concentrated solar energy and terrestrial heat coupling long-time energy storage and control system and method. The system comprises a concentrated solar energy collection system, a heat energy conversion and transmission system, a terrestrial heat long-time energy storage system, a heater module and an energy utilization system. The concentrating solar energy collecting system is used for focusing sunlight and converting the focused solar energy into heat energy; the heat energy conversion and transmission system is used for receiving heat energy from the concentrating solar energy collection system and transmitting the heat energy to the geothermal long-time energy storage system or directly used for power generation; according to the geothermal long-time energy storage system, the natural heat storage characteristic of underground deep rocks is utilized, and heat energy is stored by injecting high-temperature hot fluid; the heater module is used for heating an organic working medium by using heat energy stored by high-temperature hot fluid from a hot well through heat exchanger equipment; the energy utilization system is used for achieving the gradient utilization process of energy. The utilization efficiency of concentrated solar energy and the sustainable utilization rate of geothermal energy are improved. And maximum storage and efficient output of energy are realized.

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 solar energy collecting structure and an offshore multi-energy collecting device. Comprising a dish-shaped main plate for providing buoyancy to collect solar energy, an upper energy collection device for generating power by using heat generated by a convex lens to drive internal spring-shaped memory alloy to press a flexible piezoelectric material, and a lower energy collection device for collecting energy by using an internally arranged cantilever beam, a permanent magnet and a magnetic induction coil. The upper energy collecting device collects solar energy, the lower energy collecting device enables the mass block to vertically reciprocate relative to the magnetic induction coil fixed at the bottom through fluctuation of seawater and inertia of the mass block, and the cantilever beam and the piezoelectric plate attached to the cantilever beam are driven to vibrate while the magnetic induction coil is cut to complete power generation. And the magnetic induction coil at the tail part of the roller sliding block horizontally moves relative to the permanent magnet fixed on the inner wall, and energy collection is completed by utilizing a piezoelectric effect and a Faraday effect. The power generation efficiency is high, the energy collection efficiency is high, and the device is flexible and reliable.

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.

The invention relates to the technical field of mobile photovoltaic power generation systems, in particular to an efficient solar energy utilization system and application, the efficient solar energy utilization system comprises a solar energy collection component, an oil tank located above the solar energy collection component and a power conversion component communicated with the oil tank through a pipeline, and heat conduction oil is arranged in the oil tank; the solar energy collection unit comprises a conical photovoltaic panel, the photovoltaic panel is used for reflecting and gathering sunlight to the oil tank, and the reflection mode of the photovoltaic panel is mirror reflection. Conical photovoltaic panel mirror reflection light condensation is adopted, and solar energy is efficiently collected; light energy can be converted into electric energy, and light and heat are focused to heat conduction oil in the oil tank; heat energy is utilized through the power conversion part, solar photoelectric and photo-thermal combined efficient utilization is achieved, the solar conversion efficiency is improved from 20% to more than 40%, the improvement rate reaches more than one time, the comprehensive utilization efficiency of solar energy effectively reaches 98%, and energy waste is avoided.

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 supercritical carbon dioxide solar thermal energy storage power generation and heating circulating system and a control method. A main circulation loop in the system comprises a turbo expander, a first electromagnetic valve, a heating water-cooling heat exchanger, a first channel in an evaporation heat exchanger, a low-pressure liquid storage tank, a conveying booster pump, a high-pressure liquid storage tank, a third channel in a condensation heat exchanger, a heating tank and a second electromagnetic valve which are in clockwise closed-loop connection; the heat pump circulation loop comprises a heat pump compressor, a fourth channel in the condensation heat exchanger, an expansion valve and a second channel in the evaporation heat exchanger which are in anticlockwise closed-loop connection, the turbo expander is connected with the generator, and a working medium circularly flowing in the heat pump circulation loop is a heat pump working medium. After the carbon dioxide working medium in the main circulation loop completes power generation and heating, carbon dioxide liquefaction and waste heat recovery are achieved through heat exchange of the heat pump circulation loop, the liquid carbon dioxide working medium is conveyed in a pressurized mode through the conveying booster pump, low-energy-consumption pressurization is achieved, and the power generation capacity is improved.

The utility model discloses a line focusing photo-thermal storage integrated power generation system, which belongs to the technical field of solar photo-thermal and comprises a double-channel electric auxiliary fused salt energy storage unit and a power generation unit. The double-channel electric auxiliary fused salt energy storage unit comprises a heat release fused salt circulation channel and a heat absorption fused salt circulation channel. The heat release fused salt circulation channel comprises a first hot salt tank, a hot salt pump, a reheater, a superheater, an evaporator, a preheater and a second cold salt tank. The heat absorption fused salt circulation path comprises a first cold salt tank, a first cold salt pump, a line focusing photo-thermal mirror field and a second hot salt tank; the second hot salt tank is connected with the first hot salt tank, the second cold salt tank is connected with the first cold salt tank, and the first cold salt tank is connected with an electric heater; the line focusing photo-thermal mirror field is connected with a salt dredging tank, and the salt dredging tank is connected with the first cold salt tank. According to the line focusing photo-thermal storage integrated power generation system with the structure, decoupling independent operation of the line focusing photo-thermal mirror field and the energy storage unit is achieved, and economic benefits are improved.

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.