483results about "Solar heat storage" patented technology

The invention discloses a loop heat pipe and water heat storage coupling system and a working method, and belongs to the technical field of heat storage. The system has the modes of light gathering of the light-following trough heat collector, heat conduction of the loop heat pipe, heat storage of the water storage tank and warm water irrigation by using the stored heat water. When sunlight is sufficient in the daytime, the system converts solar energy into sensible heat of water in the heat storage water tank and stores the sensible heat, and the sensible heat is insulated by soil to slow down heat loss; when plants need to be irrigated, warm water in the irrigation water tank is used for irrigation; at night or in the absence of illumination, warm water in the heat storage water tank exchanges heat with air in the greenhouse, so that a lasting and stable heat supply source is provided for the greenhouse. Solar energy collected by the heat collecting groove is efficiently transmitted into the water tank through the loop heat pipe driven by temperature difference to be converted into sensible heat of water to be stored, the sensible heat is used for increasing the greenhouse temperature and irrigating plants when heat is needed at night, and the purposes of efficiently storing heat in the daytime and continuously supplying heat at night are integrally achieved.

The invention relates to the technical field of hot melting salt storage, and discloses a photo-thermal system mirror surface micro-angle linkage adjustment method based on thermal perception, which breaks through the limitation of traditional single data monitoring and experience judgment through multi-source data fusion and triple physical constraint decoupling, and remarkably improves the fault diagnosis accuracy. And secondly, the problem of poor model timeliness caused by traditional static partitioning and long-period updating is solved through dynamic partitioning deployment and real-time contribution identification, so that the contribution degree matrix can be updated in real time along with the mirror surface state. Accurate tracking of parameters of different time scales and safe rehearsal of a control strategy are achieved through parameter hierarchical updating and digital twinborn verification, and parameter aliasing and optimization failure caused by a traditional single updating strategy are avoided.

The invention relates to a molten salt tank and discloses a high-low position integrated molten salt tank which comprises a vertical molten salt storage tank and a low molten salt storage tank which are connected into a whole, the low molten salt storage tank is located on one side of the bottom of the vertical molten salt storage tank, and a molten salt inlet and a breathing opening are formed in the top of the vertical molten salt storage tank; a short shaft pump is mounted at the top of the low-position fused salt storage tank, and an outlet of the short shaft pump is connected with a fused salt conveying pipeline; and a communicating pipe is arranged between the top of the vertical molten salt storage tank and the top of the low-position molten salt storage tank. According to the molten salt tank, the short-shaft pump is used, the vibration problem caused by a long-shaft pump can be avoided, meanwhile, the lowest liquid level of molten salt can be lowered, the dead zone of the molten salt is reduced, the consumption of the molten salt is reduced, and the cost is saved; the molten salt is driven by gravity to flow, the complex and potential unreliable siphoning effect is replaced, system operation does not depend on precise control and external force any more, safety and reliability are achieved, and the situations that flow adjustment is difficult and siphoning fails due to the fact that a siphon pipeline changes along with the liquid level in a tank are avoided.

The invention provides a combined heat and power system and a control method thereof, and relates to the technical field of combined heat and power. The system comprises a fuel gas heat and power cogeneration subsystem, a heat supply subsystem and a fused salt heat storage subsystem, the fuel gas heat and power cogeneration subsystem is used for fuel gas power supply, the fused salt heat storage subsystem can convert solar energy and / or flue gas generated by power supply into heat energy of high-temperature fused salt to be stored, and the heat supply subsystem conducts primary heating on heat supply return water through geothermal energy; and flue gas and / or high-temperature fused salt generated by power supply are / is used for conducting secondary heating on heat supply return water. Geothermal energy, solar energy and fused salt heat storage are coupled, and renewable energy sources are fully utilized for heat and power cogeneration, so that the power supply requirement and the heat supply requirement of a user are met. In the ground source heat pump unit, primary heating is conducted through geothermal energy, heat supply return water is heated into warm water, then the warm water is secondarily heated into hot water through smoke in the gas heat and power cogeneration system, the compression ratio of a compressor in a ground source heat pump can be reduced, and power consumption of the compressor is reduced.

A solar environmental control system includes a solar powered apparatus and a heat transfer apparatus. The solar collection apparatus includes a solar collector for absorbing solar energy, a heat storage medium, and a generator. A heat transfer fluid circulates between the solar collector, the heat storage medium, and the generator.

The invention relates to the field of solar heating, in particular to a solar heat exchange device which comprises a shell and a bottom plate, the shell and the bottom plate form a closed cavity, a heat absorption layer is arranged on the outer surface of the shell, a heat conduction pipe and a phase change energy storage material are arranged in the cavity, and the inlet end and the outlet end of the heat conduction pipe extend out of the side wall of the shell. The phase change energy storage material is arranged around the heat conduction pipe and fills the cavity, a thermal expansion layer is arranged on the inner surface of the bottom plate, and the thermal expansion layer is arranged at the bottom of the cavity. In the invention, the thermal expansion layer is located below the phase change energy storage material. When the temperature rises, the volume of the thermal expansion layer is increased and pushes the phase change material upwards, so that the liquid level of the phase change material is raised, and the phase change material can be in close contact with the top heat absorption layer continuously even in a liquid state. The problems of gaps and thermal resistance caused by volume shrinkage of the phase change material are effectively avoided, it is guaranteed that heat can be efficiently transmitted to the energy storage medium, and therefore the heat transfer efficiency of the solar heat exchange device is remarkably improved.

The invention provides a dark metal modified lithium orthosilicate-based thermochemical heat storage material as well as a preparation method and application thereof, and belongs to the technical field of energy and material science. The components of the heat storage material comprise lithium orthosilicate and dark metal, the proportion of the dark metal in the heat storage material is 2-10 mol%, and the source of the dark metal comprises one or more of manganese dioxide, ferric oxide, nickel oxide and copper oxide. Metal ions introduced into the obtained dark metal modified lithium orthosilicate-based thermochemical heat storage material have the effects of promoting the ion migration rate and resisting material sintering, and specifically, the heat storage density and the cycling stability of the material are remarkably enhanced. In addition, due to the introduction of the dark metal oxide, the color of the heat storage material is remarkably deepened, the solar spectrum absorptivity is greatly improved, the light absorption performance of the material is greatly enhanced, and the heat storage material has higher photo-thermal conversion efficiency and is more suitable for a concentrating solar energy storage system.

The application relates to the technical field of solar power generation, in particular to a combined cooling, heating and power (CCHP) system. A first heat storage circuit is used for collecting solar energy and storing the solar energy as low-temperature heat energy; a second heat storage circuit is coupled with the first heat storage circuit and is used for converting the low-temperature heat energy into high-temperature heat energy and storing the high-temperature heat energy; a user heat circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for transmitting a heat source to a user heat end; a user cold circuit is coupled with the first heat storage circuit and / or the second heat storage circuit and is used for generating a cold source and transmitting the cold source to a user cold end; and a power generation circuit is coupled with the second heat storage circuit and is used for converting the high-temperature heat energy into electric energy. Through the synergistic integration of multi-stage energy storage, hierarchical heat coupling and multi-end energy output, the application realizes efficient and full-grade cascade utilization of solar energy, significantly reduces heat loss, meets the multiple demands of users for power generation, heat supply and refrigeration, greatly improves the overall energy utilization efficiency of the system and avoids resource waste.

The invention provides an intelligent energy efficiency management method and system for a solar photo-thermal-photovoltaic-heat pump coupling system. The method comprises the steps that coupling energy state vectors including photovoltaic power generation real-time output power, the hot air temperature of an air duct outlet of a solar heat collector, the operation frequency of a heat pump compressor and the water temperature of the middle of a heat storage water tank are constructed; dynamically calculating a continuous discriminant quantity and a discrete risk sign based on the vector so as to evaluate the supply and demand trend and the energy efficiency risk of the system; generating a multi-path combined control strategy covering an electric side link, a photo-thermal link, a heat pump link and a heat storage link, and performing effective filtering on a control command in combination with an equipment state inspection result; and finally, executing instructions are issued in stages according to path priorities, so that closed-loop energy efficiency adjustment is realized. According to the invention, the cooperation efficiency and the operation safety of the multi-energy coupling system are improved.

The utility model discloses a waterway sealing structure, which is applied to a solar shower column, and at least comprises a column waterway sealing structure, the structure further comprises an upper column connecting cover which is sleeved at the lower end of an upper column of the solar shower column, and four arc-shaped clamping grooves which extend along the circumferential direction and are uniformly arranged at intervals are arranged in the upper column connecting cover; the arc-shaped clamping groove is provided with an opening part and a locking part; the lower column connecting cover is arranged at the upper end of a lower column of the solar shower column in a sleeving mode, four arc-shaped buckles which extend in the circumferential direction and are evenly arranged at intervals are arranged in the lower column connecting cover, and the sizes of the arc-shaped buckles are matched with the opening parts and the locking parts of the arc-shaped clamping grooves; in the rotating process of the upper column connecting cover relative to the lower column connecting cover, the arc-shaped buckle can slide to the locking part from the opening part, so that locking between the upper column connecting cover and the lower column connecting cover is formed; the middle sealing ring is arranged in a sealing ring placing groove in the lower column connecting cover; when the upper column connecting cover and the lower column connecting cover are locked, the middle sealing ring is extruded and wrapped by the upper column connecting cover and the lower column connecting cover in a two-way mode, and column water path sealing is formed after the upper column and the lower column are connected.

The invention relates to the technical field of tower-type photo-thermal power generation, and discloses a tower-type photo-thermal power station heat collection system salt feeding method, which comprises the following steps: pumping out from a low-temperature fused salt storage tank, entering an inlet buffer tank through a first pipeline, simultaneously pumping out from the low-temperature fused salt storage tank, flowing to a liquid level display through the first pipeline and a seventh pipeline, and then feeding the liquid level display into a tower-type photo-thermal power station heat collection system; fused salt in the inlet buffer tank flows into the salt dredging mother pipe through the first salt dredging pipe and the second salt dredging pipe and is fed into the outlet buffer tank, then the first salt dredging pipe and the second salt dredging pipe apply salt to the pipe panels, and then the fused salt in the inlet buffer tank applies salt to the multiple pipe panels through the first salt supply pipe and the second salt supply pipe. Through five-step salting and step-by-step salting, impact on a tube panel, a valve and a pipeline is avoided, the technical problem that in the prior art, a heat absorber tube panel, a valve and a downcomer are damaged is solved, and the technical effects that salting is gentle, and the heat absorber tube panel, the valve and the downcomer are safer are achieved.

The invention relates to the technical field of energy storage and new energy power generation, and discloses a tower-type photo-thermal system aiming method and device.The method comprises the steps that a relative coordinate system of the position of a heat absorber, the position of a heliostat and the position of the sun is established; calculating an independent light spot of reflection light corresponding to each heliostat based on the position of the heat absorber, and marking the light spot of which the drop point is the heat absorber as an incident light spot; overlapping all the incident light spots to obtain an initial combined light spot; the initial combined spot is adjusted based on a heat absorber acceptable spot upper limit. The invention provides a light spot simulation, aiming strategy determination and combined light spot detection and correction method and an aiming point determination method of a photo-thermal power station, realizes a heliostat light spot offset and aiming center correction method aiming at a concentrating photovoltaic part, improves the energy utilization rate, and improves the energy utilization rate. And a hardware arrangement strategy provided by the invention can effectively ensure the safety of the heat absorber.

A system and method for efficiency and revitalization of power plant assets allows for existing fossil fuel burning power plants to operate in tandem with renewable power sources and to operate at a consistent base load. The system and method reduce fossil fuel burning power plant power / load cycling and improve efficiency, increase power plant useful lifetime, and reduce emissions. The system and method allow for substantially consistent power output regardless of power demand and power supply generation from existing fossil fuel burning power plants and renewable energy sources supplying a common grid.

The invention belongs to the technical field of industrial waste salt treatment, and discloses a solar tower type heat collection industrial waste salt organic impurity pyrolytic reaction system. Comprising a salt storage tank, a rotary flow divider, a flow dividing pipeline, a salt collecting box, a flow guide device, a gradual change type square tube reactor, a V-shaped flow guide device, a salt collecting tank, a heliostat field, a tail gas exhaust pipe, a cyclone separator, a tail gas purification device, an electric valve and the like, and a heat collection-reaction integrated semi-continuous treatment system is constructed. According to the system, a gradual change type square tube reactor and a rotary flow divider are adopted to dynamically adapt to solar Gaussian heat flow, unpowered fluidized conveying of waste salt is achieved depending on gravity driving, feeding and waste gas interference is avoided through batch filling, independent pyrolysis and reverse exhaust, stable operation under complex working conditions is guaranteed through heat flow-material dynamic adaptive regulation, and the system is suitable for large-scale industrial production. The industrial waste salt organic impurity pyrolysis, organic impurity removal and recovery and tail gas up-to-standard emission are efficiently achieved, and the method has energy conservation and environmental protection properties and is suitable for large-scale industrial waste salt harmless treatment and resource recovery.

The invention relates to a final-stage heat utilization system and method for a compressed air energy storage system. The system comprises a compressor unit, a compression side heat exchange system, a cooler, an expansion unit, an expansion side heat exchange system, a salt cavern, a low-temperature heat storage device, a medium-temperature heat storage device, a high-temperature heat storage device, a motor / generator unit and a photo-thermal system. The compressor unit is connected to the salt cavern, the low-temperature heat storage device and the high-temperature heat storage device through the compression side heat exchange system; the expansion unit is connected to the salt cavern, the low-temperature heat storage device and the high-temperature heat storage device through the expansion side heat exchange system; the photo-thermal system is connected to the medium-temperature heat storage device, the high-temperature heat storage device and the cooler; according to the compressed air energy storage system, compression heat of the last stage of the compressed air energy storage system is recycled by arranging the medium-temperature heat storage device, low-quality heat which cannot be utilized by the medium-temperature heat storage device is converted into high-quality heat which can be utilized by the high-temperature heat storage device by arranging the photo-thermal system, efficient utilization of energy is achieved, and the overall efficiency of the system is improved.

The invention provides temperature adjusting equipment and a control method and device thereof, electronic equipment and a light heat storage flexible system. The control method comprises the steps that according to historical operation data of the energy generation unit, a target demand of the energy storage unit is determined, and the target demand is a pre-cooling demand or a preheating demand; at least according to the target demand, a target energy pre-storage mode for starting the energy storage unit is determined, the target energy pre-storage mode is a pre-cooling mode or a preheating mode, the pre-cooling mode corresponds to the pre-cooling demand, and the preheating mode corresponds to the preheating demand; and according to the target pre-energy-storage mode for starting the energy storage unit, controlling energy circulation in the energy storage unit to perform energy exchange, and performing pre-energy-storage on the energy storage unit. According to the technical scheme, the energy consumption of the energy storage unit in the cold storage mode / heat storage mode can be reduced, the electric quantity purchased from a power grid is reduced, and the cost is reduced.

The utility model relates to a periodic energy storage heat pump for solar coupling freezing point heat removal, which belongs to the technical field of heat pumps and is characterized in that a first heat exchange part and a second heat exchange part are arranged in a solid-liquid phase change energy storage tank, and heat exchange is performed between the first heat exchange part and the second heat exchange part through a medium in the solid-liquid phase change energy storage tank; the two ends of the first heat exchange part communicate with a medium inlet and a medium outlet of the PVT photovoltaic panel correspondingly, and a liquid drainage pipeline and a liquid return pipeline are arranged on the second heat exchange part. Solar energy collects heat into the solid-liquid phase change energy storage tank through the PVT photovoltaic panel in the daytime and serves as a heat source, the PVT photovoltaic panel system stops working at night, the heat pump continues to extract residual heat in the water tank until the heat in the water tank is completely extracted and the phase change water tank is changed into solid ice, heat extraction at the freezing point is achieved, latent heat in the solid phase and the liquid phase is fully utilized, and energy is saved. Heat storage of solar energy is achieved, the part with insufficient heat at night is supplied by the boiler, and the utilization efficiency of the solar energy is improved by 12.2%.

The invention relates to the technical field of heat storage and energy supply, and discloses a cascade temperature zone regulation type solar energy-valley electricity complementary heat storage and energy supply system and method.The system comprises a mirror field heat collection system, a circulating oil tank and a high-temperature solid heat storage and heat exchange system, and a heat accumulator chamber of the high-temperature solid heat storage and heat exchange system comprises a plurality of heat storage sections; the materials of the heat storage bodies of different heat storage sections are different, and each heat storage section is connected with an independent inert gas circulation module and an independent electric heater; the mirror field heat collection system is used for gathering solar radiation energy and transmitting heat energy generated by the solar radiation energy to the circulating oil tank; the circulating oil tank distributes heat energy to each heat storage section; the high-temperature solid heat storage and exchange system stores heat energy through heat accumulators in all energy storage sections and outputs the heat energy in a heat accumulator chamber through an inert gas circulation module. And the electric heater converts electric energy into heat energy and stores the heat energy to each heat storage section. According to the invention, double breakthrough of heat storage density and temperature upper limit is realized, and different requirements can be met.

The invention discloses a boiled water preparation device and method, and aims to solve the technical problems of high energy consumption, low heat exchange efficiency, waste heat waste and fast storage temperature drop in existing boiled water preparation. According to the device, dynamic preheating of'temperature priority 'is achieved through an intelligent heat exchange unit (a solar heat exchange water tank and a waste heat recovery water tank), heat is recycled in combination with a closed-loop waste heat circulation unit, and the design of double-way shunt activation and waste heat heat preservation water storage is matched, so that energy consumption is reduced by 35%-55%, meanwhile, small-molecular-group boiled water is prepared, 24-48-hour long-acting heat preservation is achieved, and energy conservation and emission reduction are achieved. The device and the method can be used for manufacturing the boiled water meeting the healthy drinking standard of a human body, meet the policy of energy conservation and emission reduction, and are suitable for updating and reconstruction of filling water and direct drinking water supply enterprises.

The application discloses bentonite-regulated solar-driven light-heat-electricity conversion composite phase change material and a preparation method and application thereof, and relates to the technical field of phase change energy storage materials and solar energy utilization. The material is prepared by using bacterial cellulose aerogel as a porous framework, fixing MXene and TiN nanoparticles on the framework through cross-linking and gradient assembly to construct a light-heat-heat conduction network, dispersing bentonite intercalation in a polyethylene glycol matrix to form a composite phase change material, and then encapsulating the composite phase change material in the multistage pores of the aerogel. The surface of the framework has a hydrophobic modification layer. The preparation method comprises the steps of etching, aerogel framework construction, vacuum impregnation encapsulation and hydrophobic modification. The material has high light-heat conversion efficiency, high heat conduction promotion rate, excellent leakage prevention performance, fast crystallization characteristics and super-hydrophobic self-cleaning ability. When the material is combined with a thermoelectric power sheet, a solar light-heat-electricity conversion system can be constructed, and the material has a wide application prospect in the field of renewable energy.

This invention provides a solar-powered full-spectrum frequency-division thermo-electric combined-drive air conditioning system and its control method, belonging to the field of solar heat pumps. It addresses the problems of existing solar-powered jet-compression combined refrigeration systems, which cannot effectively utilize all wavelengths of solar energy, suffer from intermittent instability during power supply, and exhibit low cooling efficiency due to excessively high compression ratios under high temperature difference conditions. During conventional cooling, the system allows selection of single-jet cooling, single-compression cooling, jet-compression combined cooling, or dual-jet-compression combined cooling based on daytime or nighttime conditions and cooling requirements, achieving stable all-weather air conditioning while saving energy. In addition to the conventional cooling mode, a dual-jet-compression cooling mode can be operated to achieve high temperature difference cooling while maintaining a constant compression ratio. It fully utilizes solar thermo-electricity for self-generation and consumption, enabling switching between jet and compression air conditioning modes to ensure all-weather air conditioning needs while achieving energy conservation and emission reduction.

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 present application belongs to the technical field of solar energy utilization, and relates to a solar energy stepwise utilization electric-heat-steam combined supply system and method. The system comprises a first hot water supply subsystem, a heat exchange subsystem, a second hot water supply subsystem, a steam supply power generation subsystem and a photovoltaic power generation subsystem. The photovoltaic power generation subsystem is connected with the first hot water supply subsystem, the heat exchange subsystem, the second hot water supply subsystem and the steam supply power generation subsystem respectively. The present application can stepwise utilize solar energy, can provide hot water with high, medium and low temperatures by using solar energy gradient, can provide steam with high, medium and low parameters by using solar energy gradient, and can generate power by using the generated steam, so that solar energy is fully utilized, and the system has low investment and low cost. When sunlight is insufficient, standby equipment is arranged in each subsystem to ensure the supply of hot water and steam with various temperatures and parameters, and to ensure the normal operation of the system.

This disclosure relates to a thermal energy storage plant for storing thermal energy from an energy source, the storage plant comprising: a liquid reservoir for being coupled to an energy source and compris- ing a reservoir volume with a top side, said top side coinciding with a liquid level of a thermal energy storage liquid in the liquid reservoir, and a surface cover comprising an insulating material, such as extruded polystyrene or mineral wool, for retaining thermal energy stored in said liquid, said surface cover at least partly covering said top side, said surface cover being divided into at least a first and a second surface cover segment positioned adjacently to each other and each comprising a circumferential periphery, wherein the first surface cover segment further comprises a first tilting device, wherein the second surface cover segment similarly further comprises a second tilting device, wherein the storage plant further comprises a solar energy system for harnessing solar energy, the solar energy system comprising at least one photovoltaic cell and / or a flowing fluid configured to be heated by solar energy, the solar energy system being mounted on a mounting system installed on and / or in and / or at an exterior surface of the first surface cover segment and / or on and / or in and / or at an exterior surface of the second surface cover segment.

A solar heat powerplant comprising: a first heat reservoir which is a cold reservoir (3), a second heat reservoir which is a hot reservoir (1), at least one heat exchanger (5) adapted for radiative dry cooling of the cold reservoir (3) and / or for radiative heating of the hot reservoir (1) by absorbing solar irradiation, and a power generator (8) which operates by extracting heat from the hot reservoir (1) and transferring residual heat into the cold reservoir (3).

The utility model discloses a high-level self-flowing type solar centralized water supply system which comprises a water replenishing subsystem, a solar temperature adjusting subsystem and a hot water supply circulation subsystem. The water replenishing subsystem comprises a municipal pipeline, a steady flow tank, a water softener, a water tank, a silicon-phosphorus crystal processor, a first water replenishing pipe, a second bypass pipe and a second water replenishing pipe; the solar temperature adjusting subsystem comprises a water mixing tank, a solar heat collector, a high-position heat preservation water tank, a circulating pump set and a direct connecting pipe. The hot water supply circulation subsystem comprises a self-flowing type user hot water pipe network, a heat supply frequency conversion booster pump set and a water return pipe. Softening treatment and silicon-phosphorus crystal treatment are carried out on supplied hot water in the earlier stage, scaling of a hot water supply pipe network, metal corrosion and safety of hot water using of a user are greatly delayed, the system adopts the water mixing tank as transition to supply water to the user, the water temperature of stored water in the heat preservation water tank can be increased, and therefore the heat storage amount is adjusted; the solar heat collector and the adjacent pipeline thereof adopt an anti-freezing design, and can be automatically emptied in low-temperature weather.

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.

This invention discloses a photovoltaic heating phase change thermal storage device based on power engineering design, belonging to the technical field of thermal storage devices. Two moving blocks are symmetrically embedded inside a ring track. A stirring gear is rotatably mounted on the top of each moving block, and a stirring rod is connected to the bottom of the moving blocks. Two support pipes are installed on the bottom inner side of the thermal storage tank. Two moving frames are slidably mounted on the top of the support pipes in the middle of the movable cavity. A filter screen is fixed inside each moving frame. This invention uses a ring rack to drive the stirring gear to rotate, thereby rotating the stirring rod and reducing the temperature gradient during the solid-liquid phase change process. As the stirring rod moves with the moving blocks, its effective range increases, making the internal temperature distribution of the solid-liquid paraffin more uniform. Furthermore, the filter screen pushes the solid in the solid-liquid coexisting paraffin solution closer to the foamed copper plate and the thermal storage tank, bringing the unmelted solid paraffin closer to the heat source, further improving thermal storage efficiency.

The invention discloses a hybrid electric heating heat storage system for full-amount and full-power consumption of renewable energy sources. The hybrid electric heating heat storage system comprises a quick response part and a slow response part. The quick response part is used for absorbing quick fluctuation power of renewable energy sources and is composed of one or more quick power response electric heaters such as a solid electric heating heat storage device, an electric boiler heat storage device, an induction heating electric heater and a resistance heating electric heater; the slow response part is used for absorbing medium-low speed fluctuation power and is composed of one or more of an electric heating fused salt heat storage device, a heat pump heating heat storage device, a compressed working medium heat storage device and the like. Multi-grade heat energy supply can be achieved at the same time, or the system is used for series cascade heating to supply high-grade heat energy. The functional defect that a single electric heating heat storage system cannot effectively cope with renewable energy power fluctuation or cannot store a large amount of heat is overcome. A solution for full consumption of renewable energy is provided, and the method is particularly suitable for full consumption of off-grid new energy and provides flexible power support for new energy grid connection.