170results about "Machines using solar energy" patented technology

The invention discloses a photovoltaic-heat pump cooperative energy storage system defrosting control method, device and system, electronic equipment and a storage medium, the photovoltaic-heat pump cooperative energy storage system comprises a heat storage module, a heat circulation pipeline and a plurality of electric heating modules, and the heat storage module outputs heat energy to an evaporator through the heat circulation pipeline for defrosting. On one hand, the photovoltaic unit supplies power to the electric heating module for defrosting, and the heat storage module outputs heat energy for defrosting, so that the dependence of defrosting on a power grid can be reduced, the supply proportion of the photovoltaic unit in defrosting energy consumption is increased, the electric charge expenditure is saved for a user, the carbon emission is reduced, the peak load of the power grid is relieved, and the energy utilization rate of the photovoltaic unit is increased; partial defrosting can be achieved by supplying power to part of the electric heating modules through the photovoltaic unit, global defrosting is achieved by outputting heat energy through the heat storage module, different defrosting modes are adopted in different frosting states, the energy efficiency of the system is improved, and defrosting can be achieved through the heat storage module when the generating capacity of the photovoltaic unit is low in extreme weather.

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 present disclosure discloses a multi-energy coupled cooling / heating system for buildings in a long-term cooling region, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling / heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling / heating unit; the ground source heat pump cooling / heating unit is connected to the indirect evaporative cooling waste heat recovery unit. The present disclosure adopts double-water tank structure, designs based on stratification principle, so as to achieve heat source classification management.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

The invention relates to a solar PV / T circulating system integrating thermochemical adsorption cold storage and radiation cooling. The solar PV / T circulating system comprises loop heat pipe circulation which comprises an integrated radiation cooling PV / T assembly, a photovoltaic controller and a working medium pump. The PV / T assembly is of a turnover structure, the front face of the PV / T assembly is used for absorbing sunlight radiation, and the back face of the PV / T assembly is used for radiation heat exchange to cool the refrigerant. The vapor compression refrigeration cycle comprises a direct-current variable-frequency compressor, a condenser, a first evaporator and a plate heat exchanger; the thermochemical adsorption cold storage cycle comprises an adsorption cold storage unit, a liquid ammonia storage tank and a second evaporator; wherein an adsorbent capable of adsorbing ammonia gas and desorbing and releasing the ammonia gas is loaded in the adsorption cold storage unit. Compared with the prior art, the solar PV / T circulating system has the advantages that collaborative operation of solar photovoltaic cold supply and photo-thermal cold storage can be achieved, the solar energy utilization rate is increased, and all-weather and stable cold supply of the data center can be guaranteed.

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 technical field of heat pump units, in particular to a solar heat pump unit and a control method thereof.The solar heat pump unit comprises a base, a water tank and a heat pump unit shell are integrally formed at the top of the base, a protection plate is movably installed on one side of the heat pump unit shell, and a rainproof assembly is arranged on the side, away from the heat pump unit shell, of the protection plate; a cleaning assembly is arranged on the side, away from the rainproof assembly, of the protection plate, and a solar evaporator, a compressor and a condenser are sequentially and fixedly connected to the inner bottom face of the heat pump unit shell from left to right. According to the improved solar heat pump unit, the solar evaporator and the protection plate in the heat pump unit are cleaned through the cleaning assembly, the situation that the heat absorption effect of the solar evaporator is reduced due to dust attachment is prevented, when the cleaning assembly operates, bristles can be automatically cleaned, and dust on the surface of a filter column is scraped away; the replacement frequency of the roller column is reduced, and the cost is saved.

The invention discloses an absorption refrigeration system based on combined driving of solar energy and waste heat of a data center. The absorption refrigeration system comprises a multi-energy complementary heat collection circulation module and an absorption refrigeration circulation module. The multi-energy complementary heat collection circulation module comprises a solar heating unit, a liquid cooling cabinet and a plate heat exchanger. And the solar heating unit and the liquid cooling cabinet are respectively connected with the plate heat exchanger. And the absorption refrigeration cycle module is connected with the multi-energy complementary heat collection cycle module. The absorption type refrigeration cycle module comprises an absorption type refrigeration cycle generator, a gas-liquid separator, a condenser, an evaporator, a mixer, an absorber and a solution exchanger. And the absorption refrigeration cycle generator is connected with the plate heat exchanger and the gas-liquid separator. And the gas-liquid separator is connected with the condenser and the solution exchanger. And the condenser is connected with the evaporator. The mixer is connected with the solution exchanger, the evaporator and the absorber. And the absorber is connected with the absorption refrigeration cycle generator. Dependence on external energy can be reduced, and the energy utilization efficiency is improved.

An add-on apparatus for improving the overall efficiency of a conventional air-source air conditioner or air-source heat pump is disclosed. The add-on apparatus is a combination of piping and at least one controllable valve that provides fluid and electric or electronic control communication between the host receiving air conditioner or heat pump piping circuit and a discretionary interacting energy exchange means. The add-on apparatus having connecting refrigerant gas piping and connecting refrigerant liquid piping for communicating fluids between the host and interacting energy source. The electric or electronic communication can employ self-teaching software and have the ability to override a conventional air conditioning or heat pump control system.

A radiation heat dissipation and radiation heat collection-based cold and hot central air conditioning system includes a compressor, a liquid storage device, an indoor unit and an outdoor unit connected in sequence, the outdoor unit includes a radiation heat collector; the radiation heat collector includes a protective plate, a heat absorption plate, and a plate core; the heat absorption plate is located between the plate core and the protective plate; the plate core comprises a heat exchange medium inlet end and a heat exchange medium outlet end; and the heat absorption plate is used for transferring absorbed heat to a heat exchange medium circulating in the plate core. The heat absorption plate collects heat, and then transfers the heat to the heat exchange medium flowing in the plate core; and the heat exchange medium carrying the heat is compressed by the compressor, and then enters the indoor unit for heat exchange.

A solar powered refrigerator device for cooling food items and producing ice cubes in a remote location includes a refrigerator which has an internal compartment for containing cold food items. A refrigeration unit is integrated into the refrigerator to cool the cold food items in the internal compartment. A door is hingedly disposed on the refrigerator for opening and closing the internal compartment and an ice maker is integrated into the refrigerator to release ice cubes for cooling a beverage. The refrigerator has a peaked housing located on top of the refrigerator and the peaked housing tapers into a peak such that the peaked housing has a triangular shape.

An embodiment of the present invention discloses a control method, a control device and a solar heat pump system for protecting the fluorine-deficient state during the operation of the refrigerant compressor in the solar heat pump system. By only monitoring three temperatures, namely the ambient temperature, the water temperature and the exhaust gas temperature, the fluorine-containing state of the solar heat pump system is determined, and then according to the fluorine-containing state, the purpose of automatically controlling the working state of the refrigerant compressor is achieved. This method only collects the ambient temperature Th, the water temperature Ts and the exhaust gas temperature Tp, avoiding the influence of sunlight, which is beneficial to the evaluation of the fluorine-containing state of the solar heat pump system and better protects the solar heat pump water heater from fluorine deficiency.

The invention relates to the technical field of heat pumps and refrigeration, in particular to an enhanced vapor injection energy-saving CO2 heat pump refrigeration system with photo-thermal heat storage, which comprises a main loop, a first enhanced vapor injection loop and a second enhanced vapor injection loop. The system is applied to refrigeration or heat pump working conditions, the first enthalpy increasing loop increases the gas displacement of the compressor through gas supplementation, and the heating capacity of the system is improved; the second enthalpy increasing loop is provided with a photo-thermal heat storage heat exchanger to absorb sunlight for heat storage; the branch absorbs heat in the photo-thermal heat storage heat exchanger to improve the heating capacity of the system; the heat regenerator and the photo-thermal heat storage heat exchanger in the main loop achieve cascade supercooling of CO2 fluid on the high-temperature side and superheating of CO2 fluid on the low-temperature side, and the operation COP of the system under the low-temperature working condition is improved. Fins of the low-temperature side heat exchanger adopt a composite coating made of a photo-thermal material and a temperature-sensitive material, so that frost prevention in a low-temperature environment and non-stop quick defrosting drainage are realized, frequent start and stop of the system are avoided, and the operation performance and the operation stability of the system under a low-temperature working condition are improved.

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 present invention discloses a composite heat pipe for soil temperature regulation and its control method, which includes a solar photovoltaic device, a composite refrigeration device and a control module. The control module is respectively connected to the solar photovoltaic device and the composite refrigeration device. The solar photovoltaic device includes a solar photovoltaic panel, an electric energy controller, a storage battery, an inverter and an electric meter. The composite refrigeration device includes an air-cooled condenser, an electric valve, an electric expansion valve, a compressor, a self-standing three-way valve and a direct expansion evaporator. The control module includes a sensor and a controller. By sharing the condenser and the evaporator and ingeniously designing valves and refrigerant circulation pipelines, etc., the present invention can not only efficiently discharge the heat in the soil to low-temperature air, but also effectively discharge it to high-temperature air, realizing the economic efficiency of the device. The present invention can be widely applied in the field of temperature regulation devices.

The present invention relates to the field of integration of renewable energy and intelligent control systems, and in particular to a method for heat storage and release balance of a solar ground source heat pump system based on adaptive learning. The method comprises the following steps: S1: defining energy types, first thermal energy: DC power after photovoltaic conversion supplied to the ground source heat pump system; second thermal energy: electricity after photoelectric conversion stored in an energy storage device; third thermal energy: solar thermal energy stored in a sensible heat or latent heat accumulator; fourth thermal energy: solar thermal energy stored through an underground aquifer. The present invention defines four types of thermal energy and conversion nodes, evaluates the energy cycle, realizes refined energy allocation, and ensures uninterrupted energy supply in severe weather; verifies and adjusts the heat storage and release balance of the ground source heat pump, constructs an adaptive learning model, introduces the fourth thermal energy compensation, enhances system flexibility and adaptability, significantly improves the level of intelligence and response speed, and realizes efficient and reliable energy management.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

Battery powered hybrid reefers that use for their driving force, energy derived from the best-mix integrated combination of electrical power generated from an internal combustion engine generator, an electric grid, a wheel driven generator and at least one solar panel.

A solar energy auxiliary combined heat and power system and operation method, the system comprises a boiler, a high, medium and low pressure cylinder of a steam turbine, a condenser, a heat recovery system connected in sequence; further comprising a trough type solar heat collection system, a high and low temperature heat storage tank, an oil-water heat exchanger, a peak heater, a waste heat heater, an auxiliary heater, an absorption heat pump and various valves. During the daytime power peak and heat valley period, the solar energy drives the absorption heat pump and the peak heater, recovers the steam turbine exhaust and the waste heat of the heat network return water, under the premise of meeting the heat supply load, auxiliary improves the steam turbine power output; the excess solar heat is stored through the high temperature tank. During the night power valley and heat peak period, the high temperature tank releases heat to drive the absorption heat pump and the peak heater to recover the steam turbine exhaust and the waste heat of the heat network return water, which is used for heat supply of the heat network. The present application realizes the pure condensing condition operation of the combined heat and power unit in the heating season, and greatly improves the power output of the unit in the power peak period, and the peak regulation capacity is obviously improved.

A system and method of thermal energy storage and transfer are disclosed. The system and method incorporate an underground thermal energy storage unit with horizontally arrayed heat exchangers surrounded by aggregate. The aggregate, composed of porous or semi-porous materials such as sand, soil, or crushed rock, may be moistened (10%-35% water by weight) to enhance thermal energy storage and insulated with a layer of dry aggregate shielded by waterproof materials. The system integrates components such as a heat pump, a thermal energy processing unit (e.g., a dry cooler or solar thermal array), and fluid interconnections including pumps and valves, allowing flexible energy transfer between components. Horizontally arrayed heat exchangers, which may feature spiral pipe or slinky designs, enable efficient thermal energy distribution by directing heated fluid to central connections, optimizing heat retention. The system supports versatile energy storage for heating and cooling, with enhanced performance through moisture and insulation control.

The application discloses a solar energy, air energy and phase change energy storage coupled heat pump unit which comprises a heat supply pipeline, a circulating heating mechanism and an integrated evaporator, a compressor, a condenser and an expansion valve which are sequentially installed on the heat supply pipeline; the integrated evaporator comprises an insulation shell, a heat absorption glass plate, a lower header tank, an upper header tank and an energy storage heat collecting pipe; the energy storage heat collecting pipe comprises a heat collecting sleeve pipe, an inner heat transfer pipe, a water inlet ring pipe, an upper sealing piston, a lower sealing piston and a limiting piece; air inlets are formed in opposite two side walls of the insulation shell; and the circulating heating mechanism comprises a circulating return pipe, a circulating water supply pipe, a heating water tank and a circulating pump. The heat energy is extracted from the solar energy, the air energy and the phase change energy storage, and is coupled with a water source heat energy unit to provide heating for buildings, so that the sustainable development of energy can be realized; when the water in the heat collecting sleeve pipe is completely frozen, the ice in the heat collecting sleeve pipe is discharged from the heat collecting sleeve pipe, so that the ice melting energy consumption can be reduced, and the subsequent rapid heating for the heat user is facilitated.

The application relates to the technical field of box-type refrigeration equipment, in particular to a box-type refrigeration house matched photovoltaic direct-drive variable-frequency refrigeration unit. The device comprises a box-type refrigeration equipment, a supporting rack, a rotating disc, a circular ring supporting frame, a mounting ball, a sliding assembly, an extension rod, a connecting assembly and a folding power generation mechanism. The folding power generation mechanism realizes photovoltaic power generation through an expansion assembly, and can flexibly adjust the angle and position of the photovoltaic frame, so as to improve the photoelectric conversion efficiency. In addition, the device is also provided with an electricity storage mechanism, which can continue to supply power when the illumination is insufficient, and ensures the stable operation of the refrigeration equipment group. The application achieves the effects of optimizing energy utilization, reducing energy consumption, improving system reliability and flexibility.

The embodiment of the invention discloses a PVT heat pump multi-source energy management method and system based on AI intelligence, belongs to the technical field of photovoltaic thermoelectricity, and solves the problem that an existing PVT heat pump energy adjusting system is low in energy comprehensive utilization rate. Collecting environment temperature data and energy demand information; determining a predicted energy demand value based on a multiple linear regression model; predicting the output energy of the PVT assembly and the thermoelectric module in a future period of time through a preset time sequence prediction model to obtain a predicted energy output value; according to the current environment temperature data and the predicted energy demand value, priority coefficients corresponding to the PVT assembly and the thermoelectric module are determined; determining a difference value between the predicted energy demand value and the predicted energy output value, and obtaining to-be-adjusted energy information based on the difference value and a priority coefficient; and matching the to-be-adjusted energy information with a preset heat storage / electricity storage integrated buffer device to realize dynamic adjustment of output energy.

A method is directed to controlling superheat in a refrigerant circuit containing working fluid. The method includes directing a suction stream of the working fluid from the evaporator through the suction heat exchanger and directing the working fluid compressed by the compressor to the suction heat exchanger. The method also includes controlling a flowrate of the compressed working fluid through the suction heat exchanger. The controlling includes modulating a working fluid control valve based on a determined target saturation temperature for the compressed working fluid. A refrigerant circuit includes a main flow path, a bypass flow path, a working fluid control valve, and a controller for the refrigerant circuit. The controller configured to determine a target saturation temperature for the working fluid flowing through the suction heat exchanger in the bypass flow path, and modulate the working fluid control valve based on the target saturation temperature.

A solar powered refrigerator device for cooling food items and producing ice cubes in a remote location includes a refrigerator which has an internal compartment for containing cold food items. A refrigeration unit is integrated into the refrigerator to cool the cold food items in the internal compartment. A door is hingedly disposed on the refrigerator for opening and closing the internal compartment and an ice maker is integrated into the refrigerator to release ice cubes for cooling a beverage. The refrigerator has a peaked housing located on top of the refrigerator and the peaked housing tapers into a peak such that the peaked housing has a triangular shape.

The invention relates to a planting technology for cooling and storing water for a soil body by utilizing solar power generation refrigeration, which comprises an anti-seepage water storage tank 1, an anti-seepage heat insulation water storage tank 2, a refrigeration pipe 3, a refrigeration pipe sleeve 4, a drip irrigation pipe 5, a breathable layer 6, an organic fertilizer treatment plant partition 7, an organic matter treatment freezing partition 8, a ground surface organic heat insulation layer 9, a planting tree 10, an excavation interface 11, a water absorption layer 12, a refrigerator 13 and a photovoltaic panel 14. Commercial crops 15 and a refrigeration header pipe 19.

This invention discloses a solar-geothermal energy cascade utilization system and its control method, comprising a solar thermal collector subsystem, a solar hot water circulation subsystem, a user and underground pipe subsystem, and a controller. The solar thermal collector subsystem includes a solar collector device, a first heat exchanger, and an insulated water tank. The solar hot water circulation subsystem includes a phase change heat storage device, a second heat exchanger, a third heat exchanger, a domestic hot water user terminal, an absorption chiller / heater unit, and an insulated water tank. The user and underground pipe subsystem includes a ground source heat pump, underground pipe assemblies, and user terminals for heating and cooling needs. Each subsystem utilizes the circulation pipeline and the control method to achieve corresponding heat exchange. Using this system, cooling, heating, and hot water production functions can be integrated, thereby reducing investment and construction costs. Using the system's control method, the energy cascade utilization of solar and geothermal resources can be achieved year-round, providing a stable source of heat and cold water, domestic hot water, and ensuring underground thermal balance.

The application discloses a solar refrigeration system with a cold storage function, comprising a solar absorption refrigeration device, wherein the solar absorption refrigeration device comprises a solar heat collector and an absorption refrigeration system, the absorption refrigeration system comprises a generator, a first condenser, a first throttling valve, a first evaporator and an absorber, steam or hot water generated by the solar heat collector is used as a heat source of the absorption refrigeration system, and the solar refrigeration system further comprises a vapor compression refrigeration device, a cold storage device and a controller. The solar refrigeration system with the cold storage function and the control method thereof can maximize utilization of solar energy resources and fully utilize the advantages of the absorption refrigeration system, and solve the problem of energy waste caused by closing the absorption refrigeration system or simultaneously starting the absorption refrigeration system and other mode refrigeration in the prior art.

The application belongs to the technical field of solar absorption refrigeration and air water production, and discloses a solar-driven absorption water production device coupled with a loop heat pipe and a solution energy storage.The application has two working states, namely, a charging state and a discharging state.The energy storage unit converts the excess solar energy into the chemical potential energy of the solution and stores the chemical potential energy into a storage tank when the solar energy is sufficient.The energy storage unit can continue to maintain the operation of the absorption refrigeration when the solar energy is insufficient, and the water production process is completed.In the application, the absorption refrigeration unit adopts a water-lithium bromide working medium pair, the absorption refrigeration is driven by the solar energy to realize the cooling air dew condensation water production, the energy storage unit can ensure that the device can continuously work and produce water when the solar energy is insufficient, the heat pipe loop can improve the cold quantity transmission efficiency and the water production efficiency, and the device structure is compact.The application is energy-saving and environment-friendly, can satisfy the fresh water demand of people at any time, and can effectively solve the problem of lack of fresh water resources in coastal areas.

The present invention relates to a multi-split central air conditioning system for simultaneous cooling and heating, comprising a condensation module, a plurality of indoor fan coil units, a high-pressure circulation tube, a medium-pressure circulation tube, a low-pressure circulation tube, and an evaporation module. The indoor fan coil units are connected to the high-pressure circulation tube by means of a first branch tube, to the low-pressure circulation tube by means of a second branch tube, and to the medium-pressure circulation tube by means of a third branch tube, and a solenoid valve is provided on each of the first branch tube and the second branch tube. The beneficial effects are: when heating a local area in the summer and cooling a local room in the winter, refrigerant is circulated by means of solenoid valve switching and a medium-pressure circulation tube such that the multi-split central air conditioning system has multiple working modes (independent cooling / independent heating / simultaneous partial cooling and partial heating), thereby improving the diversity of the overall operation conditions of the air conditioning system without adding a complex refrigerant switching piping. The condensation module and the evaporation module can also be used as a balancer of the system to ensure efficient and stable operation of the system.