52results about "Machines using solar energy" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

This invention discloses a refrigeration system employing dual ejectors, relating to the field of compression refrigeration technology. The system includes a condenser, a working fluid pump, a generator, a two-phase ejector, a steam ejector, a gas-liquid separator, a scroll compressor, and an evaporator. The condenser outlet is connected to the working fluid pump inlet, the working fluid pump outlet is connected to both the generator inlet and the primary flow inlet of the two-phase ejector, the generator outlet is connected to the primary flow inlet of the steam ejector, the two-phase ejector outlet is connected to the gas-liquid separator inlet, the gas outlet of the gas-liquid separator is connected to the scroll compressor inlet, the liquid outlet of the gas-liquid separator is connected to the evaporator inlet, the evaporator outlet is connected to the secondary flow inlet of the two-phase ejector, the scroll compressor outlet is connected to the secondary flow inlet of the steam ejector, and the steam ejector outlet is connected to the condenser inlet. This invention improves the efficiency and performance of the entire system, thereby achieving higher operational efficiency.

This invention relates to the field of heat pump and refrigeration technology, specifically to an energy-saving CO2 heat pump refrigeration system with photothermal heat storage and vapor injection enthalpy enhancement, comprising a main circuit, a first enthalpy enhancement circuit, and a second enthalpy enhancement circuit. This invention is applied to refrigeration or heat pump operations. The first enthalpy enhancement circuit increases the compressor's discharge volume by injecting gas, thereby increasing the system's heating capacity. The second enthalpy enhancement circuit incorporates a photothermal heat storage exchanger to absorb sunlight for heat storage. This branch enhances the system's heating capacity by absorbing heat from the photothermal heat storage exchanger. In the main circuit, the regenerator and photothermal heat storage exchanger achieve stepped subcooling of the high-temperature CO2 fluid and superheating of the low-temperature CO2 fluid, improving the system's operating COP under low-temperature conditions. The low-temperature heat exchanger fins utilize a composite coating of photothermal and temperature-sensitive materials to achieve frost prevention and rapid defrosting and drainage without shutting down the system in low-temperature environments, avoiding frequent system start-ups and shutdowns and improving the system's operating performance and stability under low-temperature conditions.

The invention provides a control method, device and system for a photovoltaic photo-thermal heat pump system and a medium. The photovoltaic photo-thermal heat pump system comprises a photovoltaic photo-thermal assembly. The control method comprises the following steps: receiving actual power generation data of the photovoltaic photo-thermal assembly under solar irradiation; receiving heat distribution information of the photovoltaic photo-thermal assembly from a thermal imaging module under the condition that the actual power generation data is within a theoretical value range of the photovoltaic photo-thermal assembly under the same working condition; under the condition that the heat distribution information conforms to the expected heat distribution, it is determined that the photovoltaic photo-thermal heat pump system operates normally; under the condition that the heat distribution information does not conform to the expected heat distribution, it is determined that the photovoltaic photo-thermal heat pump system operates abnormally, and first early warning processing is executed; and under the condition that the actual power generation data is out of the theoretical value range, executing a system fault diagnosis process. The operation stability and the maintenance efficiency of the photovoltaic photo-thermal heat pump system can be improved.

The present disclosure relates to a multi-split central air conditioning system for simultaneous cooling and heating, including a condensation module, multiple 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 and the multi-split central air conditioning system has multiple working modes.

The invention discloses a multi-source heat pump system based on a photovoltaic photo-thermal plate and an operation method.The multi-source heat pump system comprises a photovoltaic photo-thermal power generation assembly, a photovoltaic source heat pump unit, a first air source heat pump unit, a second air source heat pump unit and a user side use end; the photovoltaic photo-thermal power generation assembly comprises a photovoltaic photo-thermal plate, and the photovoltaic source heat pump unit comprises a first shell-and-tube heat exchanger, a first gas-liquid separator, a first compressor, a second shell-and-tube heat exchanger, an air conditioner hot water plate heat exchanger, a first liquid reservoir and a first electromagnetic valve which are communicated in sequence. The air conditioner hot water plate heat exchanger is communicated with a user side use end and used for supplying heat to the user side use end, the first air source heat pump unit comprises a first air heat exchanger, and the first air heat exchanger is sequentially communicated with the first gas-liquid separator, the first compressor, the second shell-and-tube heat exchanger, the air conditioner hot water plate heat exchanger and the first liquid reservoir.

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

The invention provides a heat pump energy storage system and method, and belongs to the technical field of energy storage. The heat pump energy storage system comprises a charging circulation system, a heat collection and storage system and a discharging circulation system, and the heat collection and storage system is used for heating a heat-conducting medium through solar energy and storing heat energy of molten salt and comprises a solar heat collector and a double-tank heat storage system; the charging circulation system is used for utilizing the heat energy of the heat-conducting medium and input electric power, and heating and storing the molten salt; the discharge circulation system is used for generating power by using stored molten salt heat energy. Redundant electric energy of renewable energy sources and solar heat energy are coupled, flexible consumption of electric power of the renewable energy sources and upgrading utilization of heat energy are achieved, and the renewable energy sources can be flexibly dispatched and efficiently converted within a long-time scale. The system is suitable for complementary integration of solar heat energy and renewable energy electric power, and an efficient, flexible and clean long-time energy storage solution is provided for fluctuating renewable energy.

The invention relates to a method for using waste heat from industrial processes, comprising: (a) transferring heat from at least two processes to a temperature-control medium; (b) supplying the temperature-control medium to a heat pump or to a heat-pump park comprising at least two heat pumps; (c) transferring heat from the temperature-control medium to a working medium in a heat exchanger of at least one heat pump and / or using the heat from the temperature-control medium for the desorption of refrigerant in an absorption heat pump.

The invention discloses an energy unit. The energy unit comprises a box body, a heat pump unit and a solar energy conversion device. Wherein a cavity is formed in the box body; the heat pump unit is arranged in the cavity, and the heat pump unit is used for outputting cold energy and / or heat energy to the outside of the box body; the solar energy conversion device is rotationally connected to the box body through a universal adjusting device, the solar energy conversion device is at least used for converting solar energy into electric energy, and the solar energy conversion device is electrically connected with the heat pump unit. The energy unit at least can solve the problem that a solar power generation device of an existing container refrigeration device is poor in light receiving effect.

The invention discloses a hydrogen energy and natural energy heat pump heat supply and refrigeration integrated system and method, and relates to the technical field of hydrogen energy and natural energy heat pump heat supply and refrigeration integration. The heat pump heating module comprises the following steps that S1, carbon dioxide in air is absorbed through a refrigerant or the refrigerant and released into water; the carbon dioxide heat pump is used, and carbon dioxide is a clean refrigerant, has no destructive influence on the environment, is stable in chemical property, non-combustible, not easy to decompose at high temperature, does not generate harmful gas, is non-toxic, reduces threats to people due to leakage, is good in fluidity and has a relatively high evaporation latent heat value; compared with conventional refrigerants, the compression ratio of carbon dioxide is much smaller than that of common refrigerants, high performance coefficient and mechanical efficiency can be achieved, the high condensing temperature enables the exhaust temperature of a compressor to be high, and water at the high temperature can be obtained.

The invention discloses an energy-saving system capable of comprehensively applying solar photovoltaic power generation energy storage, an air suspension compressor, an air pump and a liquid pump and recycling waste heat and a control method. The energy-saving system comprises an indoor heat exchange tail end and an outdoor heat dissipation unit, and a heat pipe evaporator and an air conditioner evaporator are arranged at the indoor tail end; steam is converged into the main air pipe through the air pump and the air suspension compressor respectively; the outdoor unit is provided with an air-cooled heat pipe condenser and an air-cooled air conditioner condenser and is matched with a liquid storage tank, a liquid pump module and a throttling device to form a natural cold source heat exchange loop and a mechanical compression refrigerating loop. The refrigeration control method is based on an outdoor temperature, return air temperature deviation and condensation side parameter judgment mode, and the three-way switching valve is driven to distribute steam in proportion and cooperatively adjust the fan, the pump and the compressor in a mixed mode. According to the energy management method, photovoltaic, energy storage and mains supply cooperate with a direct current bus to supply energy, priority power supply, power compensation and key load guarantee are executed according to an SOC threshold value and bus voltage, and the temperature control stability and energy efficiency are improved.

Techniques, methods, and systems are described for a device that includes a collector configured to collect energy, a waveguide, a thermoacoustic engine (TAE) within the waveguide. The TAE includes a first TAE heat exchanger configured to receive the energy from the collector and convert the energy into first thermal energy, a TAE regenerator configured to convert the first thermal energy into an acoustic wave. The device includes a thermoacoustic refrigerator (TAR) within the waveguide including a TAR regenerator configured to convert the acoustic wave into second thermal energy, and a TAR heat exchanger configured to direct the second thermal energy to a substance.

According to certain aspects of the application, a heat pump includes a first heat extraction unit and a second heat extraction unit to extract heat from a first heat source and a second heat source, respectively, within a first temperature range and a second temperature range, wherein the second temperature range is, on average, higher than the first temperature range. A fluid passageway defines a flow path through which the working fluid flows in series from the first heat extraction unit to the second heat extraction unit to a thermal reservoir. A pressure-reducing cascade is coupled to the passageway and disposed in series on the fluid circuit between the thermal reservoir and the first heat extraction unit. In addition, a compressor or a regenerator (or both) is coupled to the passageway and disposed in series on the fluid circuit between the first heat extraction unit and the second heat extraction unit.

The invention discloses a Carnot battery energy storage system coupled with a solar heat pump, which comprises a heat pump circulating unit, a heat storage unit and an organic Rankine cycle unit, the heat pump circulating unit comprises a solar heat collector and a photovoltaic and photo-thermal integrated device, and is used as a low-temperature heat source and a driving heat source of the heat pump circulating unit; the heat pump cycle unit is connected with the heat storage unit and used for storing heat energy in the heat storage unit, and the heat storage unit is connected with the organic Rankine cycle unit and used for converting the heat energy into electric energy. The device has the advantages that the structure is simple, full-spectrum utilization of solar energy is achieved, photoelectric efficiency is high, and energy supply and demand are matched in time and space. The invention further discloses an energy storage and power generation method of the Carnot battery energy storage system coupled with the solar heat pump.

A multi-energy coupled cooling / heating system, 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.

An air conditioning system includes a vapor compression loop including a compressor, an expansion device, a first heat exchanger, a second heat exchanger, wherein a working fluid is configured to circulate within the vapor compression loop. An energy storage device is selectively operable to supply power to a component of the air conditioning system. A thermal management system includes a heat transfer fluid loop fluidly connecting the energy storage device and a coolant heat exchanger. A heat transfer fluid is configured to circulate through the heat transfer fluid loop. The thermal management system is thermally and fluidly coupled to the vapor compression loop at the coolant heat exchanger. The coolant heat exchanger is arranged in series with each of the compressor, the expansion device, the first heat exchanger, and the second heat exchanger within the vapor compression loop.