118results 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.

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 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.

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.

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 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.

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.

A composite device of an HVAC system is provided. The composite device includes a heat pump assembly, a power storage system, and a DC bus to which the heat pump assembly and the power storage system are connected.

A method of controlling a refrigeration cycle device that includes refrigerant, a variable speed compressor, a condenser, a solar heater, a sensor, an expansion valve, an evaporator and a controller, the method including compressing the refrigerant using the compressor, in the condenser, cooling the refrigerant and condensing the refrigerant into a liquid state, in the solar heater, heating the refrigerant using solar energy, using the sensor, determining a pressure or a temperature of the refrigerant after it has been heated in the solar heater, and controlling the speed of the variable speed compressor using a closed-loop control scheme based at least in part on the determined pressure or temperature of the refrigerant.

The invention provides a photovoltaic module and air energy heat pump coupling system and a control method thereof.The photovoltaic module and air energy heat pump coupling system comprises an air energy heat pump, a mains supply module, a photovoltaic module and a power module, and the photovoltaic module is connected with a direct current bus of the mains supply module through the power module; the photovoltaic module has the maximum power generation power; the control method comprises the following steps: acquiring real-time output voltage and real-time load power of the direct-current bus; and the power supply module controls the operation state of the photovoltaic module based on the maximum power generation power of the photovoltaic module, the real-time output voltage of the DC bus and the real-time load power. The participation degree of photovoltaic power generation and commercial power grid power supply can be dynamically adjusted, and the power utilization cost of the air energy heat pump is reduced to the maximum extent.

The application discloses a photovoltaic photo-thermal heat pump system and a control method thereof and an air conditioning system. The photovoltaic photo-thermal heat pump system comprises a main refrigerant flow path provided with a compressor, a first branch path connected with the main refrigerant flow path and provided with a photovoltaic photo-thermal assembly, and a second branch path connected with the main refrigerant flow path and provided with a first heat exchanger. A first regulating valve is arranged at the connection of the main refrigerant flow path and the first branch path and the second branch path, and the first regulating valve can distribute the proportion of refrigerant in the main refrigerant flow path flowing into the first branch path and the second branch path. Compared with the prior art, the application proposes a system and a control method in which a heat pump system is connected in parallel with a photovoltaic photo-thermal assembly, a refrigerant pump is used in cooperation with a regulating valve to reduce the power consumption of the compressor under various working conditions, and the working point of the photovoltaic photo-thermal heat pump system is adjusted by comparing the power consumption increase of the compressor and the total gain of the photovoltaic photo-thermal heat pump system, so that the optimal energy efficiency working point is achieved.

Disclosed is a portable heating / cooling device comprising one or more heating elements for transferring heat to an object, one or more cooling elements for cooling an object; wherein said heating or cooling elements are adapted for selectively providing either heating or cooling based on temperature maintenance requirements, an integrated control unit for regulating the temperature, one or more temperature sensors that provide real-time feedback to the control unit, and a power source for supplying energy to the heating / cooling elements.

The invention discloses a heat pump energy storage system integrating a photovoltaic photo-thermal device and a battery, which comprises a photovoltaic photo-thermal assembly, a heat pump assembly, a high-temperature heat storage assembly, a heat engine circulation assembly and a battery energy storage assembly, and is characterized in that the photovoltaic photo-thermal assembly is connected with the heat pump assembly and the battery energy storage assembly and is used for providing electric energy; the heat pump assembly, the high-temperature heat storage assembly and the heat engine circulation assembly are sequentially connected, the high-temperature heat storage assembly stores heat energy provided by the heat pump assembly and converts the heat energy into electric energy in the heat engine circulation assembly, and the photovoltaic photo-thermal assembly is connected with the heat engine circulation assembly and used for providing heat energy and converting the heat energy into electric energy in the heat engine circulation assembly. According to the invention, quick response to power grid adjustment can be realized, and efficient collaborative output of heat energy and electric energy is realized on the basis of fully utilizing natural solar energy resources. The invention further discloses an operation method of the heat pump energy storage system integrating the photovoltaic photo-thermal device and the battery.

The invention discloses a direct radiation suction type household heat pump air conditioner. The air conditioner comprises a heating unit; the outdoor unit comprises a solar air heat source pump outdoor unit used for heating a room to be heated, and the solar air heat source pump outdoor unit comprises a solar reflection steel plate shell; the solar heat collection evaporator is mounted at the upper part of the solar reflecting steel plate shell; the punched tempered glass is arranged on the outer side of the solar heat collection evaporator and used for blowing the entering air to the surface of the solar heat collection evaporator; and the guide plate is mounted on the inner side of the solar reflecting steel plate shell and is positioned at the lower end of the solar heat collection evaporator. And in the air draft process of the fan, negative pressure can be generated in the solar reflecting steel plate shell, so that air enters the solar reflecting steel plate shell from the perforated tempered glass and is uniformly blown to the surface of the solar heat collection evaporator, and the energy efficiency ratio and the operation stability of the system are integrally improved.

The invention relates to a heat pump assembly (9) comprising at least one first heat pump (1) with a flow (11) and a return pipe (12), at least one second heat pump (2) with a flow (21) and a return pipe (22), at least one first heat source (3) with a flow (31) and a return pipe (32), and at least one second heat source (4) with a flow (41) and a return pipe (42), wherein the heat pump assembly (9) also contains a collector (5) and a distributer (6), wherein the flow pipes (11, 21) of the first and second heat pumps (1, 2) and the return pipes (32, 42) of the first and second heat sources (3, 4) are connected to the distributer (6), and the return pipes (12, 22) of the first and second heat pumps (1, 2) and the flow pipes (31, 41) of the first and second heat sources (3, 4) are connected to the collector (5), and a connection pipe (7) is arranged between the distributer (6) and the collector (5). The invention also relates to a building provided with same and to a method for operating a heat pump assembly.

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 present disclosure includes a system for pre-cooling produce or other goods while transporting goods that includes a plurality of refrigerated containers that are electrically connected with one other to share power between the containers. In some aspects, each refrigerated container includes a plurality of photovoltaic panels, a battery configured to receive electrical power from the plurality of photovoltaic panels, and a refrigerator configured to cool a cavity of the container. In some aspects, the system includes an energy distribution system configured to determine a power level of the batteries for each container and, based on the power level, transfer power to or from the batteries.