1373results about "Solar heat storage" patented technology

The invention provides a fused salt energy storage system with a seal, and relates to the technical field of energy storage. The fused salt energy storage system comprises a high-temperature storage tank used for storing hot fused salt; the low-temperature storage tank is used for storing the cold molten salt; the nitrogen supply device is used for conveying nitrogen into the high-temperature storage tank and the low-temperature storage tank; the balance pipeline is used for balancing the internal pressure of the high-temperature storage tank and the low-temperature storage tank; a heat exchange working medium flows through the heat exchange device, the hot molten salt stored in the high-temperature storage tank can flow through the heat exchange device and exchange heat with the flowing heat exchange working medium in the heat exchange device, and the hot molten salt becomes cold molten salt after releasing heat and enters the low-temperature storage tank; or the cold fused salt stored in the low-temperature storage tank can flow through the heat exchange device and exchanges heat with the flowing heat exchange working medium in the heat exchange device, and the cold fused salt becomes hot fused salt after absorbing heat and enters the high-temperature storage tank. The fused salt energy storage system solves the problems that in the prior art, ternary salt in fused salt energy storage is prone to oxidation, so that the melting point of fused salt rises, and the heat storage efficiency is reduced.

The invention provides a solar energy-air energy composite heat pump system based on self-contained energy storage cascade application and a control method. The solar energy-air energy composite heat pump system comprises a heat pump host module, a solar module and a hydraulic module. Hot water generated by the solar heat collector is accumulated in the energy storage water tank and serves as an external heat source for active enhanced vapor injection to improve the performance of the heat pump. An active enhanced vapor injection device is designed for a heat pump host module, a refrigerant in an economizer absorbs heat of heat storage hot water, is jetted to a middle pressure cavity of a compressor and is converted into heating capacity, and the performance of the heat pump is greatly improved. When it is detected that the temperature in the heat storage water tank is reduced to a certain temperature, the flow direction of the heat storage hot water is switched through the switching assembly, the heat storage hot water is pumped to the heat pump fluorine-water heat exchanger for heat exchange, the heat pump performance is improved, and cascade application of the heat storage hot water is achieved. Refrigerant flows in the fin type heat exchanger and the fluorine-water heat exchanger are controlled by respective electronic expansion valves, and the opening degrees of the fin type heat exchanger and the fluorine-water heat exchanger are adjusted according to respective air suction superheat degrees, so that respective optimal heat exchange effects are realized.

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

The 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.

The invention relates to a solar cross-seasonal heat storage and release ground source heat pump system and a balance control method and device, and relates to the technical field of ground source heat pump systems. The ground source heat pump subsystem comprises a ground heat exchanger group which is arranged in a partitioned manner; and the cross-seasonal heat storage device is used for storing and releasing solar heat and is thermally coupled with the buried pipe heat exchanger group, the cross-seasonal heat storage device is of an underground concrete structure, and three temperature gradient areas of a high-temperature layer, a medium-temperature layer and a low-temperature layer are arranged in the cross-seasonal heat storage device. Through the synergistic effect of the dynamic load distribution mechanism and the layered heat storage strategy, the problem of soil cold and heat accumulation caused by long-term operation of the ground source heat pump system can be effectively relieved. Differential design of the core heat exchange area and the buffer temperature adjustment area is combined with a multi-objective optimization algorithm, so that the difference value of annual accumulated heat taking capacity and heat supplementing capacity is controlled within 5%, and the self-recovery capacity of the soil thermal field is remarkably improved.

The invention relates to the technical field of temperature control, in particular to an intelligent solar heat supply temperature management and adjustment system which comprises a thermal distribution modeling module, a thermal equilibrium optimization module, a fluid heat transfer design module, a dynamic layout adjustment module and an environmental factor coupling module. According to the method, through calculation based on solar radiation intensity and heat absorption parameters, a thermal distribution field is accurately established, a dynamic optimization basis is provided, thermal gradient differences are reduced, heat distribution balance is achieved, and through optimization of heat absorption coating covering density and pipeline layout, the heat energy transfer efficiency is improved, and local overheating and energy loss are reduced; pipeline distribution and fluid flow rate optimization are combined with heat transfer oil heat exchange performance, heat transfer efficiency is enhanced, radiation angles and layout parameters are dynamically adjusted, the solar energy absorption rate of the heat collection device is improved, output parameters are adjusted in real time in combination with environment temperature and wind speed, the capacity of the system for adapting to complex climate conditions is improved, and efficient and stable heat energy utilization is achieved.

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 the technical field of solar heat energy system control, and provides a solar phase change heat storage cooperative control method and system, which ensure that the thermal physical state of a material is accurately sensed by introducing a calibration mode; in the heat collection stage, according to the comparison between the actual melting time consumption of the phase change material and the reference melting time, the latent heat attenuation coefficient is dynamically calculated, the heat storage capacity attenuation is evaluated in real time, and misjudgment of heat storage saturation due to material performance reduction is avoided; in the heat release stage, based on the internal temperature of the heat storage unit and the water outlet temperature change of a user side, the supercooling degree of the phase change material is accurately determined, the crystallization characteristic of the phase change material is mastered in real time, and a basis is provided for supercooling intervention; and the system stores and updates the melting starting temperature, the latent heat attenuation coefficient and the supercooling degree in real time, and executes heat collection and heat release control according to the melting starting temperature, the latent heat attenuation coefficient and the supercooling degree. According to the method, the problem of inaccurate control caused by performance change of the phase-change material is solved, the utilization efficiency of solar heat energy and the stability of heat supply are remarkably improved, and energy waste is effectively avoided.

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.

The invention discloses a photovoltaic photo-thermal energy storage multi-element coupled all-weather self-adaptive building energy system and method, and belongs to the crossing field of solar comprehensive utilization and building energy saving. The system integrates a Fresnel lens, a frequency division film, a photovoltaic power generation unit, a thermoelectric power generation unit and a multi-temperature-zone phase change energy storage device, and the surface of the photovoltaic and thermoelectric unit is covered with an aerogel heat collection and insulation layer. Sunlight is focused by a Fresnel lens and then is separated into short-wave light and long-wave light by a frequency division film, and power generation waste heat is stored in a cascade mode through a phase change energy storage device; the intelligent control unit switches a heat supply season mode or a cold supply season mode according to seasons and energy consumption requirements. The system improves the solar spectrum utilization rate, achieves all-weather self-adaptive supply of electricity and heat of the building, is compact in structure, low-carbon and efficient, and is suitable for various building energy scenes.

The invention discloses a valley electrochemical heat storage and energy supply system based on photo-thermal coupling, and relates to the technical field of energy storage and supply, and the system comprises a photo-thermal module, an electrochemical energy storage module, an intelligent control module and a heat exchange and energy supply module. Efficient conversion and intelligent complementation of energy are achieved, the photo-thermal module can efficiently collect solar energy and convert the solar energy into heat energy to be stored, a stable heat source is provided for the electrochemical energy storage module, electrochemical reaction is assisted, the energy storage efficiency is improved, and meanwhile the intelligent control module controls the intelligent control module according to the temperature state and the electric energy requirement of the electrochemical energy storage module. The heat output and light condensation parameters of the photo-thermal module are dynamically adjusted, intelligent distribution and adjustment of energy are achieved, and due to the synergistic effect, the utilization efficiency of the energy is improved, and the stability and reliability of the system are enhanced.

The invention relates to the technical field of solar photo-thermal utilization, in particular to a photo-thermal power station fused salt circulation system and a regulation and control method.The system comprises light condensation and heat collection units which are connected in parallel, and a hot fused salt module comprises a hot fused salt main pipe and a hot fused salt tank which are arranged in a low position; the cold molten salt module comprises a high-terrain cold molten salt mother pipe, a low-position cold molten salt tank and a mother pipe communicating pipe for connecting the high-terrain cold molten salt mother pipe and the low-position cold molten salt tank, and the cold molten salt tank, the mother pipe communicating pipe, the hot molten salt mother pipe, the light condensation and heat collection unit and the cold molten salt mother pipe are sequentially communicated and circulate back to the cold molten salt tank to form a salt filling circulation path; the cold molten salt tank, the cold molten salt mother pipe, the light-gathering heat-collecting unit, the hot molten salt mother pipe and the hot molten salt tank are sequentially communicated to form a heat storage path, and the light-gathering heat-collecting unit, the hot molten salt mother pipe, the mother pipe communicating pipe and the cold molten salt tank are sequentially communicated to form a salt dredging path. The scale of hot molten salt pipelines needing expensive stainless steel materials can be reduced, the matched electric heat tracing and heat preservation requirements are synchronously reduced, and the material cost and the construction complexity are remarkably reduced.

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 embodiment of the present invention provides a tower solar molten salt absorber protection control method, system and storage medium, which belongs to the technical field of solar thermal power stations. The method includes: obtaining meteorological forecast data and tower solar thermal power station system operating parameters; using the principle of balancing the power consumption of the cycle condition and the power consumption of the salt withdrawal and restart, and calculating the maximum cycle time according to the tower solar thermal power station system operating parameters; determining the operating condition of the tower solar thermal power station system when cloud shading occurs according to the meteorological forecast data and the maximum cycle time; and controlling the operation of the tower solar thermal power station system according to the operating condition. The method determines the maximum cycle time by using the principle of balancing the power consumption of the cycle condition and the power consumption of the salt withdrawal and restart, and then determines the operating condition of the tower solar thermal power station system when cloud shading occurs according to the maximum cycle time and the expected cloud shading time, which can reduce the number of starts and stops of the tower solar thermal power station system while maximally saving energy consumption.

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 provides an underground water layered energy storage system and method, is applied to the technical field of energy utilization and is used for solving the technical problems of underground water extraction and irrigation imbalance and insufficient heat supply and exchange capacity. The method specifically comprises the following steps: determining a working mode of a mining and irrigation unit according to a mining and irrigation geographic position and mining and irrigation time; the mining and irrigation unit is controlled to conduct same-layer mining and irrigation through the aquifer corresponding to the working mode; wherein the heating mode corresponds to a far-surface aquifer, and the refrigeration mode corresponds to a near-surface aquifer; and when it is determined that the underground water layered energy storage system is in a preset system operation state according to the operation data, determining the water-containing layer in an idle state as a target water-containing layer, and controlling the mining and irrigation unit to perform different-layer mining and irrigation through the water-containing layer corresponding to the working mode and the target water-containing layer. In this way, in the heating mode, the underground water with the high temperature of the far-surface aquifer is used for heating, the heat supply and exchange capacity is improved, when the recharge efficiency is lower than the preset efficiency, the different-layer mining and irrigation mode is adopted, and underground water mining and irrigation unbalance is avoided.

The invention belongs to the technical field of solar photo-thermal power generation, and discloses a tower type solar power generation system based on lunar soil particle moving bed heat exchange, which utilizes local materials of lunar soil to prepare solid heat storage particles as a heat transfer and heat storage medium, greatly reduces the mass and volume of the system and the cost and risk of transporting materials from the earth, and improves the energy efficiency. The efficient particle moving bed heat exchanger combining the particle receiver and the heat collector utilizes direct efficient contact heat exchange between solid particles and between the particles and a heat exchange working medium, has the characteristics of high heat exchange efficiency, small heat loss and compact structure, and is particularly suitable for space vacuum and microgravity environments; it is ensured that heat is reliably and stably transmitted to the Brayton cycle power generation system from concentrated solar energy, and power is generated through the Brayton cycle power generation system.

The invention relates to the technical field of solar heat pumps, in particular to an air source heat pump control method and system based on deep learning. Comprising the following steps that S1, the liquid working medium temperature of a solar heat storage tank is obtained through a temperature sensor, the solar radiation intensity is obtained through a sensor, and auxiliary management of the air source heat pump is judged according to the liquid working medium temperature of the solar heat storage tank and the solar radiation intensity; and S2, relevant data of the solar heat storage tank are obtained, an adjustment value is obtained by using an adjustment processing formula according to the relevant data, and the liquid working medium in the solar heat storage tank is heated by using an air source heat pump according to the adjustment value. By combining the advantages of the solar photo-thermal system and the air source heat pump, stable heat supply under various environmental conditions is guaranteed, the liquid working medium in the heat storage tank is heated according to a parameter adjustment formula, and breeding of pathogenic microorganisms is eradicated.

The present invention discloses a constant temperature system for roadbed and pavement, which relates to the technical field of road temperature control, and includes a ground heat exchange component arranged below the road surface; a buried pipe heat exchange device buried underground; a pipeline component; a heat pump unit, the buried pipe heat exchange device is connected to the heat pump unit; the heat pump unit is connected to the ground heat exchange component; a solar device, the solar device is connected to the heat pump unit; a cooling water device, the cooling water device is connected to the heat pump unit; a phase change energy storage device, the phase change energy storage device is connected to the solar device and the cooling water device; the phase change energy storage device can input hot water in the solar device for heat exchange and energy storage, and output the cooling water after heat exchange to the cooling water device for cold storage; the phase change energy storage device can input cooling water in the cooling water device to heat it up, and output the heated water to the heat pump unit through the pipeline component for heating. The present invention comprehensively utilizes various forms of energy to achieve heat balance regulation of roadbed and pavement in different seasons.

The invention relates to the technical field of intelligent control, in particular to a solar heat collection and storage system with an intelligent regulation and control function, which comprises a heat collection state recognition module, a hot-pressure fluctuation diagnosis module, a branch switching control module, a slow start path regulation and control module and an energy supply analysis module. According to the method, by analyzing the synchronous relation between the heat conduction liquid temperature rise trend and the thermal inductance state, the stable characteristics of heat collection response are recognized, the matching precision of heat source output and liquid conduction is improved, the path pressure fluctuation and the heat input period change are combined, main circulation abnormity is recognized in advance, and rapid replacement of a standby path is assisted to be completed; segmented conduction and heat removal operation ensures flow continuity, enhances heat flow conduction efficiency, crosswise judges a heat supply channel and a heat storage state, realizes linkage optimization of path selection and heat source scheduling, and improves response coordination, operation stability and heat energy utilization efficiency of the system under multiple working conditions.

The invention discloses a heat supply system for mine building heat supply and shaft freezing prevention, comprising: a heat collection module for collecting heat by using solar energy; the heat storage module exchanges heat with the heat collection module, is used for storing the heat source transferred by the heat collection module and can transfer the heat source to a heat terminal for the mining area building for heating around the clock; the power supply module is used for generating power by using solar energy and storing electric energy; and the wellhead heating modules are arranged at the shaft positions of the main inclined shaft and the auxiliary inclined shaft, and heat exchange is conducted between the wellhead heating modules and the heat storage module. The water source heat pump is used for heating the main inclined shaft and the auxiliary inclined shaft, comprehensive utilization of energy is achieved, a photovoltaic renewable power source is built in combination with the mining area space to provide clean power for mining area heat supply and power utilization systems such as the water source heat pump, and when the mining area power load and the heating load are low in the non-heating season, the water source heat pump can be used for heating the heat storage system. Zero-carbon heat supply for mine area building heat supply and shaft freezing prevention is achieved.

The invention relates to the technical field of photovoltaic cooling hydrogen production, and particularly provides a multi-source synergistic spray cooling concentrating frequency division photovoltaic hydrogen production system and a regulation and control method. Accurate separation of solar spectrums is achieved through jacketed pipe frequency division and a reaction pipe, visible light wave bands are converted into electric energy through a photovoltaic module, infrared wave bands are subjected to photo-thermal conversion through a catalytic reaction pipe, surplus heat energy is directly used for the activation process of hydrogen production through water electrolysis, and gradient utilization of solar energy is achieved. And precise temperature control is realized, and the temperature of the photovoltaic panel is stabilized in an optimal interval in combination with a closed-loop temperature control strategy. The wind-solar complementary power supply and the waste heat cascade recovery device synergistically improve the energy utilization rate, and the multifunctional integrated electric control system realizes hydrogen-electricity-heat multi-target scheduling through a dynamic game optimization algorithm and a digital twin simulation platform. The working temperature of a solar cell is stabilized in the optimal efficiency interval, meanwhile, heat energy loss of a traditional system is converted into hydrogen production effective energy, and an efficient and stable solar energy-hydrogen energy conversion system is constructed.

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 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.

The invention discloses a photovoltaic energy storage and cooling coupled system and method based on a copper-based composite phase change material. A power generation module, a cooling energy storage module, an energy conversion module and the like are included. In the daytime, the solar photovoltaic panel emits heat, and the copper-based composite phase change material absorbs heat, stores energy and cools the photovoltaic panel; at night, the phase change material releases heat, and the thermoelectric material converts heat energy into electric energy. The system uses a DDPG algorithm of deep reinforcement learning to optimize operation. The state space comprises parameters such as the temperature of the solar photovoltaic panel and the temperature of the phase-change material, and the action space relates to operations such as control of cooling energy storage and energy conversion. The reward function is designed in multiple aspects of comprehensive efficiency, energy storage, electric energy output and stability. By constructing a strategy network and a value network, the system can make decisions according to environmental changes. And extracting data from the experience playback buffer area to update network parameters so as to enable the system to perform self-adaptive adjustment. The system not only solves the problems of high temperature of the photovoltaic panel and power generation at night, but also improves the energy utilization efficiency by using an algorithm, and the performance is far better than that of a traditional photovoltaic system.

The invention relates to a molten salt groove type heat collecting device, an operation method of the molten salt groove type heat collecting device and a molten salt groove type photo-thermal power station, and belongs to the field of molten salt groove type photo-thermal power stations. The heat collection mechanism comprises a plurality of heat collectors which are connected in series through pipelines to form a heat collector group, and the two ends of the heat collector group are communicated to the molten salt tank; the heat collector set is arranged in a U shape, a pipeline at the bottom of the U shape is a middle jumper pipe, and the middle jumper pipe is located at the highest position. And a gas outlet of the gas heating mechanism is communicated with the middle jumper pipe. The two ends of the U-shaped heat collector set are communicated with the fused salt tank, the highest position of the heat collector set is communicated with the gas heating mechanism, heating and salt injection can be conveniently conducted on the heat collectors, the automation degree is high, and convenience and rapidness are achieved.

The invention relates to the technical field of electrolytic hydrogen production, in particular to a high-temperature electrolytic cell hydrogen production system and method based on photo-thermal driving, and the system comprises an electrolytic cell used for generating target gas after electrolyzing electrolyte, and a gas-liquid separation assembly used for separating the electrolyte from the target gas; the solar heat collector communicates with the gas-liquid separation assembly and the heat storage device, the solar heat collector heats the electrolyte separated by the gas-liquid separation assembly, and the heated electrolyte is fed into the heat storage device and then enters the electrolytic bath; the heat storage device is located between the solar heat collector and the electrolytic bath, communicates with the electrolytic bath and is used for storing redundant heat of the electrolyte heated by the solar heat collector when the temperature of the electrolyte is high or supplementing heat to the electrolyte when the temperature of the electrolyte is low when the temperature of the electrolyte is low when the electrolyte flows through the heat storage device. Therefore, the problems that energy consumption is increased, electric energy is wasted and the like due to the fact that an additional cooling device is needed for heat dissipation in a hydrogen production mode in the related technology are solved.

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a solar cross-quarter energy storage and soil source heat pump coupling heating system. The system comprises a solar photo-thermal photovoltaic integrated subsystem, a soil source heat pump coupling heat storage system and a heat user terminal system, the solar photo-thermal photovoltaic integrated subsystem comprises a photo-thermal photovoltaic integrated assembly, a heat exchanger, a storage battery and a circulating pump, and the solar photo-thermal photovoltaic integrated subsystem is used for supplying power to electric equipment of the system and collecting heat; the soil source heat pump coupling heat storage system comprises a soil source heat pump unit, a plate heat exchanger and soil serving as a heat storage medium. And a terminal user maintains proper indoor temperature and required hot water through the heat exchanger. Solar energy and geothermal energy are combined, abundant solar energy is converted into heat energy to be stored in soil in the non-heating season, then the heat energy is taken out through the ground source heat pump for heating in the heating season, renewable energy sources are fully utilized, and the current situation that cold and heat loads are uneven due to long-term operation of the soil is effectively prevented; finally, the purposes of high efficiency, energy conservation and emission reduction are achieved.