118results about "Solar heat storage" patented technology

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.

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 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 molten salt storage device with movable support frame and supporting legs comprises a tank body, the cross section of the tank body is circular, the top of the tank body is provided with a feeding port, the lower part of the tank body is provided with a support plate, the plate surface of the support plate is in the horizontal direction, the tank body is placed on the support plate, the tank body and the support plate are not fixed, the outer side of the top of the support plate is fixed with a circular ring-shaped fence, the diameter of the inner wall circle of the fence is greater than or equal to the outer wall diameter of the tank body when the tank body is heated to the maximum diameter, the lower part of the support plate is provided with a support frame, the support plate and the support frame are fixedly connected, and the lower part of the support frame is provided with a plurality of supporting legs. The purpose is to provide a molten salt storage device with movable support frame and supporting legs which can absorb displacement variables caused by temperature changes, thereby avoiding local stress of the storage tank to cause equipment damage, molten salt leakage, serious pollution to the environment and accidental injury to personnel.

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

The application discloses a kind of distributed solar all-weather power generation device based on thermoelectric technology, it is related to distributed energy storage power generation field, in the present application, solar energy can be converted into heat energy storage by cooperating with light tracking and light collecting part and heat storage and heat exchange part, and then heat energy is delivered to thermoelectric power generation part, and heat energy is converted into electric energy by thermoelectric device in thermoelectric power generation part, so that all-weather power generation of equipment is realized by heat storage and thermoelectric power generation;In light tracking and light collecting part, light collecting part and double-shaft light tracking system cooperate, the angle of light collecting part can be adjusted according to the change of solar altitude angle and solar azimuth angle, so that light collecting part can be perpendicular to sunlight to the greatest extent, improve the light collecting efficiency of equipment, realize the efficient capture of solar radiation, thereby improve solar energy utilization and equipment power generation effect;By using ternary carbonate as heat storage medium, its heat storage density is high, so that the amount of heat storage salt required by the equipment is greatly reduced, and the volume of the equipment can be reduced.

This invention discloses a low-corrosion chloride molten salt heat transfer and storage medium, method, and application, belonging to the field of molten salt thermal storage technology. The high-heat-capacity, low-corrosion carbonate molten salt heat transfer and storage medium of this invention is composed of 18%~22% potassium chloride, 6%~10% sodium chloride, 1%~3% aluminum powder, 1%~3% magnesium powder, 1%~3% zinc powder, with the remainder being zinc chloride. Its key feature is the introduction of metal powder into the molten salt, which not only achieves excellent thermal storage performance at 600℃~800℃, but also reduces corrosion by utilizing the potential regulation ability of dissolved metal ions and the formation of highly active [Al] from gaseous chloride products through physical and chemical adsorption. This low-corrosion chloride molten salt heat transfer and storage medium achieves excellent thermal storage performance and low corrosivity, and can be applied in solar thermal power generation and molten salt energy storage.

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

This utility model relates to a solar water heating supply device, belonging to the field of solar water heating supply technology. The device includes a support frame, a water tank fixedly mounted on the top surface of the support frame, a municipal water inlet pipe fixedly connected to one side of the water tank, several vacuum collectors fixedly mounted on both sides of the support frame, one end of each vacuum collector passing through the support frame and fixedly connected to the water tank, and a water inlet pipe fixedly connected to the other side of the water tank. A storage tank is located on one side of the water tank, and an inner tank is installed inside the storage tank. A pressure pump is installed on the water inlet pipe, one end of which passes through the storage tank and is fixedly connected to the inner tank. A stirring assembly is installed inside the inner tank, and an outlet pipe connected to the inner tank is located on one side of the storage tank. A vacuum state is created by utilizing the gap between the storage tank and the inner tank, which prevents heat loss through heat conduction.

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

The application discloses an energy-saving and environment-friendly solar heat storage and supply device which can effectively improve heat storage capacity and solar energy utilization effect, and can effectively suppress the imbalance of solar heat production through the energy storage of a heat storage water tank. Meanwhile, the heat storage water tank comprises a water tank body in a cylindrical structure and a vacuum heat preservation cylinder, so that the heat preservation effect of the heat storage water tank can be effectively improved. When solar energy is slightly insufficient, the inner storage cavity stores hot water with a higher temperature, and the outer storage cavity stores hot water with a slightly lower temperature, so that the amount of heat dissipation of the outer storage cavity to the outside can be reduced. Meanwhile, the water in the outer storage cavity can be returned to solar energy for utilization when solar energy is seriously insufficient, so that the heat of output hot water is effectively ensured, heat storage effect and suppression capacity are improved, the control of the application is simple, energy loss can be effectively saved, and heat utilization effect and capacity are ensured.

This invention relates to the field of heat absorption tower engineering technology, and discloses a molten salt tank for a heat absorption tower resistant to multi-directional earthquakes, comprising a swing-type molten salt tank and a self-resetting hybrid energy-dissipating molten salt tank support. The swing-type molten salt tank has shear keys and annular flanges; the self-resetting hybrid energy-dissipating molten salt tank support includes a base, metal-laminated rubber, and a self-resetting hybrid energy-dissipating component. This energy-dissipating component has a ring spring assembly and a slotted steel plate, which sequentially pass through the base, metal-laminated rubber, and flanges and connect them. This invention amplifies the deformation effect through a swing mechanism, concentrates plastic deformation on the energy-dissipating device, and effectively reduces the dynamic response of the molten salt tank under multi-dimensional earthquakes by utilizing multi-stage energy dissipation and self-resetting functions. It solves the problems of insufficient energy dissipation, large residual deformation at the connection points after earthquakes, and poor adaptability to multi-dimensional earthquakes in traditional rigid support structures.

This invention provides a controlled solar thermal collector system for heat storage. The system includes a main pipeline and a first branch pipeline and a second branch pipeline connected in parallel with the main pipeline. Multiple heat accumulators are installed in parallel on the first branch pipeline, and each heat accumulator has a heat accumulator valve on its inlet pipe. A heat exchanger is installed on the second branch pipeline, and a heat exchanger valve is installed on the second branch pipeline. A main valve is installed on the main pipeline. A temperature sensor detects the output temperature of the cold source in the heat exchanger. When the detected output temperature of the cold source in the heat exchanger is lower than a predetermined value, all heat accumulator valves are closed to ensure that the hot fluid enters the heat exchanger for heat exchange. This invention controls the heat accumulator to store heat based on the output temperature of the heat exchanger, ensuring that the output temperature of the heat exchanger meets the user's needs.

This invention discloses an encapsulation and molding technology for inorganic solid-liquid phase change materials. It enhances the photothermal conversion capability of inorganic hydrated salts through a two-stage encapsulation and molding process using a porous support material at the micro-pore stage, followed by shaping and a two-stage macro-encapsulation and molding process using commercial sealant and carbon materials. This two-stage encapsulation method plays a crucial role in maintaining the shape stability of the inorganic hydrated salt phase change material, resulting in a composite phase change material with a certain photothermal conversion capability. This multi-stage encapsulation and molding method is very simple, using low-cost porous matrix and commercial adhesives. It is highly effective in solving the problems of liquid leakage and thermal instability in inorganic hydrated salt phase change materials and can be extended to the multi-stage encapsulation and molding of other inorganic hydrated salt phase change materials. This simple, inexpensive, and efficient method will facilitate the application of inorganic hydrated salt phase change materials in practical applications.

This invention discloses a light-controlled molecular heterogeneous thermal storage device, belonging to the field of solar energy storage technology. The device includes a detachably connected first and second shell, both with mirrored inner surfaces. The first shell houses a light source assembly containing a xenon lamp and a first filter; the second shell has a magnetically attachable second filter on its top and multiple circular flow heat exchange channels running through its sides. A rotatable heat storage layer is fitted around each channel, and the interior is filled with a molecular light-switching material. A liquid metal thermally conductive layer is filled between the heat storage layer and the heat exchange channels. This invention achieves switching between natural light and auxiliary light modes through a detachable structure, adapting to different lighting conditions and enabling all-day operation; the rotating heat storage layer and mirrored inner wall ensure uniform illumination, and the liquid metal ensures efficient heat transfer, thereby significantly improving the energy storage and release efficiency of the molecular light-switching material and the system's controllability.

The utility model discloses a kind of waste heat recovery and solar combined heat supplement device, involve heat supplement device technical field.A kind of waste heat recovery and solar combined heat supplement device of the utility model, including base and control box and flue gas heat exchanger, the top of the base is equipped with solar heat collection component, the surface of the flue gas heat exchanger and the surface of solar heat collection component are equipped with heat supplement mechanism, one side of the heat supplement mechanism is equipped with metal pipe, the surface of the heat supplement mechanism and the surface of metal pipe are equipped with connecting mechanism.The utility model, through heat supplement mechanism, the heat energy of flue gas heat exchanger and solar heat collection component can be simultaneously supplied to other equipment, and the heat energy of flue gas heat exchanger and solar heat collection component can also be supplied to other equipment individually, so as to control the supply amount of heat energy, metal pipe will be damaged due to oxidation and corrosion and thermal stress after a certain period of use, through connecting mechanism, metal pipe can be easily disassembled and assembled, so that metal pipe can be easily replaced.

The application belongs to the technical field of solar energy coupling jet-main cycle, and provides a solar energy coupling jet-main cycle system and a control method. According to the solar radiation intensity and scene demand, the solar energy direct heating mode, the solar energy coupling jet heating mode and / or the CO2 double-stage compression cycle heating mode are coupled to enter the combined working mode, so that the best working condition is ensured in the variable environment, and the maximum heating capacity is obtained with the minimum energy consumption. Through reasonable allocation of multiple working conditions, the application realizes multiple modes such as solar energy heating, CO2 double-stage compression heating, solar energy jet heating, solar energy jet CO2 coupling heating and the like.

This application relates to the field of solar photovoltaic and photothermal technology, and discloses an integrated photovoltaic and photothermal module, a seawater desalination device, and a manufacturing method. The module includes a photothermal layer, a heat transfer medium layer, and a photovoltaic layer. The photothermal layer comprises a first transparent substrate, a second transparent substrate, and a photothermal film for absorbing ultraviolet and near-infrared wavelengths of sunlight. The first and second transparent substrates are stacked, with the photothermal film disposed between them. The heat transfer medium includes a heat-conducting medium that is fluidly disposed between the photothermal film and the second transparent substrate. The photovoltaic layer is located on the side of the second transparent substrate facing away from the photothermal film. By using the photothermal and photovoltaic layers, selective absorption and utilization of sunlight across different wavelengths is achieved, effectively utilizing the entire spectrum and realizing efficient solar energy conversion. Simultaneously, the absorbed heat is provided for seawater desalination, thereby improving the energy utilization efficiency of seawater desalination and avoiding energy waste.

A system for converting solar energy into electrical energy, comprising a water circuit; an electric heater that increases the temperature of the water in said circuit; a device for converting solar energy into thermal energy of water; a steam generator that converts the thermal energy of water into electrical energy; a converter of said electrical energy; an accumulator; and generators; characterized in that, under conditions of insufficient solar energy, the energy stored in said accumulator is converted by said generators, and this ensures uninterrupted generation of electrical energy both under conditions of sufficient sunlight and under conditions of insufficient sunlight, as well as in the absence of sunlight.

The present invention provides a solar-based multipurpose utility system which is an integrated appliance that uses solar energy to perform various utility functions such as cooking, ice melting, water heating, room heating, and food drying. The phase change material has been used in the system for enhancing the thermal storage capacity of the system. The invention supports the idea of providing wireless remote control for the overall system to the end-user using IoT-based sensors and devices. The system comprises Fresnel lens with cover (21), Fresnel lens (22), ice pot (23), water pipe (24), reflector (25), water storage tank (26), blower (13), phase change material (PCM) filled in evacuated tube arrangement (27), hot air sprayer (28), water filter (15), battery with electronic components (3), water tap (29), temperature and humidity sensor (16), exhaust fan (12), and solar panel (1).

This invention relates to a cascaded dual-loop thermal management building system for manned lunar research stations deployed on the moon. It addresses the technical challenge of achieving low-energy consumption and highly reliable constant temperature control in the extreme lunar surface environment. In this dual-loop thermal management building system, the inner and outer loop heat exchangers and phase change thermal storage modules are located inside the lunar regolith. The heat exchange terminals inside the cabin form a circulation loop with the inner and outer loop heat exchangers via an inner loop circulation pipe. The lunar surface heat collection components are connected to the inlet of the phase change thermal storage module via a first outer pipe. The working fluid outlet of the phase change thermal storage module is connected to a buried heat exchange pipe via a second outer pipe. The buried heat exchange pipe is connected to the inner and outer loop heat exchangers via third and fourth outer pipes. The inner and outer loop heat exchangers are connected to the lunar surface heat collection components via fifth and sixth outer pipes. This invention utilizes the lava tube space and lunar regolith enclosure to significantly reduce lunar diurnal thermal fluctuations and employs a dual-loop working fluid division of labor, adapting to efficient heat transfer and extreme environmental conditions.

The application relates to the field of combined heat storage heat pump dryers, and discloses an off-grid green energy combined heat storage heat pump drying system which comprises four parts of an energy collection module, an energy combination and storage module, a heat pump drying module and an intelligent control module. The energy collection module comprises a solar energy collection unit and a wind energy collection unit, the solar energy collection unit adopts a vacuum tube type heat collector, and the wind energy collection unit is arranged on one side of the solar energy collection unit and comprises a wind wheel. The energy combination and storage module comprises a phase change heat storage unit and a battery energy storage unit. The heat pump drying module comprises a heat pump machine and a drying bin, and the heat pump machine mainly comprises a compressor, a condenser and an evaporator. The intelligent control module comprises a PLC control cabinet. The application solves the problems of unstable energy supply, poor environmental protection and low energy utilization efficiency.

The application discloses a seawater desalination system coupled with a phase change heat storage vacuum tube type solar collector and a working method, and the system comprises a vacuum tube type solar collector, a seawater supply tank, a valve, a water pump, a glass cover plate, a thermoelectric module, a fresh water collecting tank, fins, a distilled water channel, a bottom container, corrugated heat absorption plates, a phase change material filling area and a seawater evaporation area; the application combines the technologies of the solar collector, the solar seawater desalination, the temperature difference power generation and the phase change heat storage, can realize the continuous seawater desalination and the temperature difference power generation all day long, and supplies power to the water pump through the temperature difference power generation, significantly reduces the system energy consumption, and realizes the flexible and sufficient utilization of the solar energy and the low-cost and efficient desalination of the seawater resources.

This application provides a tiered operation system and method for an integrated molten salt thermal energy storage solar-assisted coal-fired power generation system, belonging to the technical field of solar-assisted coal-fired power generation systems. The system provided includes a coal-fired power plant subsystem, a solar field subsystem, and a processing system. It adjusts the heat transfer oil flow rate of the PTC collector field and the molten salt flow rate of the molten salt thermal energy storage system according to the actual solar thermal energy input. It calculates the mass flow rate and pressure of each stage of extraction steam in each high-pressure heater in the high-pressure heater group based on the matrix heat balance equation and the Stodola formula. It switches the connection relationship between the salt-water heat exchanger and each high-pressure heater in the high-pressure heater group according to the load level and the actual solar thermal energy input, realizing tiered steam extraction substitution. The tiered operation system and method for an integrated molten salt thermal energy storage solar-assisted coal-fired power generation system provided in this application are used to achieve dynamic switching of extraction steam levels under different loads and solar irradiance conditions.

A solar collector includes 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.

The application relates to the technical field of heat storage and energy storage, and discloses a heat storage and energy storage molten salt material and a preparation method and application thereof, the method comprises raw material pretreatment, molten salt system preparation, additive modification, vacuum melting treatment, step cooling and heat treatment, and crushing and screening; by adding nano-aluminum oxide and carbon nanotubes as the additives into a ternary basic molten salt mixture, the thermal conductivity and the thermal stability of the molten salt material are improved, meanwhile, the introduction of nucleating agents promotes the uniformity of molten salt crystallization, so that the phase change latent heat and the recycling service life of the material are enhanced, and the reliability of the heat storage and energy storage performance is ensured; the preparation process of vacuum melting treatment combined with step cooling and heat treatment is adopted, bubbles and impurities in the molten salt are removed, the high purity and the compactness of the microstructure of the material are ensured, and by controlling the cooling rate and the heat preservation and ripening process, the crystal structure of the molten salt is optimized, and the thermal stability and the use temperature range of the material are improved.