1421results about "Sorption machines" patented technology

The invention belongs to the technical field of heat energy power, and discloses a combined energy system of a green liquid cooling data center, which comprises a liquid cooling subsystem, a heat pump subsystem, an energy storage compression cooling subsystem, an energy storage expansion heating subsystem, an organic Rankine cycle power generation subsystem, an absorption refrigeration subsystem and a heat supply subsystem. Heat generated by the heat pump subsystem and compression heat generated by the energy storage compression cooling subsystem are coupled and stored in the high-temperature water tank, and the collected heat is distributed to the energy storage expansion heating subsystem, the organic Rankine cycle power generation subsystem, the absorption type refrigeration subsystem and the heat supply subsystem according to needs. The system is used for generating electric power, cold energy and heat energy respectively and providing the electric power, the cold energy and the heat for the data center and surrounding users, thereby reducing operation cost of the data center and realizing efficient utilization of energy of the data center.

The invention discloses a cryogenic step-by-step preparation unit and process based on injection condensation and enhanced heat absorption in the technical field of absorption refrigeration. The cryogenic step-by-step preparation unit comprises a generation assembly, an evaporation absorption assembly, an injection assembly and a condenser. The evaporation and absorption assembly comprises a medium-pressure evaporator, a low-pressure evaporator, a medium-pressure absorber and a low-pressure absorber; the generating assembly utilizes a heat source to produce a cold source, the medium-pressure evaporator utilizes part of the cold source produced by the generating assembly to primarily cool a secondary refrigerant, and the low-pressure evaporator utilizes the remaining cold source discharged by the medium-pressure evaporator to cool the secondary refrigerant again. The condenser produces cold energy which is used as cold sources of the medium-pressure absorber and the low-pressure absorber respectively; the absorption type refrigerating unit is optimally designed, single-stage refrigeration is replaced by stage-by-stage refrigeration, the problem that the cost of single-stage refrigeration is too high due to the fact that equipment is too large is solved, and then application of the unit in the deep cooling scene is expanded.

The invention discloses an offshore multi-energy combined supply system based on constant-pressure compressed carbon dioxide energy storage and an operation method of the offshore multi-energy combined supply system. The system comprises a working medium storage device, a heat energy storage device, a charging process module, a gas-liquid conversion loop, a discharging process module, a cold energy supply module and a heat energy supply module. By improving the energy release process structure of the compressed carbon dioxide energy storage system, the pressure of high-pressure carbon dioxide is reduced to normal pressure after primary expansion, so that low-temperature cold energy is generated while power is generated, consumption of stored heat is saved, residual stored heat is used for heat supply, the comprehensive utilization rate of energy is increased, and combined supply of cooling, heating and power is achieved; the system further comprises an integrated thermally-driven combined cooling and power supply subsystem capable of switching power generation / refrigeration modes, organic Rankine cycle and jet refrigeration cycle are highly integrated, investment cost and space occupation are reduced, redundant heat energy is flexibly and efficiently converted into electric energy or cold energy, and the flexibility of multi-energy combined supply of the system is improved.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

The invention discloses a distributed energy system based on a gas turbine and a compressed air energy storage technology, and belongs to the technical field of distributed energy systems, the distributed energy system comprises a gas turbine unit, a filter, a combustion part arranged at the downstream of the filter, and a heat exchange part arranged at the downstream of the combustion part; the compression energy storage unit comprises a compression part arranged at the downstream of the filter and a first heat exchanger connected between the gas turbine unit and the compression energy storage unit; the system further comprises two heat sources, three cold sources and two power sources. According to the distributed energy system based on the gas-air combined cycle, the gas turbine system and the energy storage system can operate independently, and can operate in a coupling mode at the peak of electricity utilization. The whole system has the combined cooling heating and power supply function and the electric energy storage function, the problem of flexible regulation and control of the cooling heating and power proportion in a conventional CCHP system can be solved, and the efficiency of a conventional compressed air energy storage system can be improved.

The invention discloses a carnot cell cold, heat, electricity and fresh water combined supply system based on waste heat utilization. The system comprises a dual-pressure condensation heat pump cycle device, a heat storage cycle device, an organic Rankine cycle device, a lithium bromide absorption type refrigeration cycle device, a multi-stage flash evaporation seawater desalination device and a photovoltaic power generation device. Wherein the dual-pressure condensation heat pump circulating device is respectively connected with the heat storage circulating device, the lithium bromide absorption type refrigeration circulating device, the photovoltaic power generation device and the multi-stage flash evaporation seawater desalting device; the heat storage circulating device is also connected with the organic Rankine cycle device; the lithium bromide absorption type refrigeration circulating device is also connected with the multi-stage flash evaporation seawater desalting device; and the dual-pressure condensation heat pump circulating device is used for increasing the temperature of the waste heat so as to meet the operation requirements of the lithium bromide absorption type refrigeration circulating device or the multi-stage flash evaporation seawater desalting device. A large number of low-grade waste heat resources generated in industrial production are effectively utilized, and supply and demand matching of electric energy is adjusted.

The invention discloses an energy-saving efficient refrigerating unit and process for preventing cavitation of a steam condensate pump in the technical field of refrigeration. The energy-saving efficient refrigerating unit comprises a high-pressure generator, a medium-pressure generator, a high-pressure evaporator, the steam condensate pump, a composite power generation compressor and a refrigerating assembly. Heat of saturated steam condensate flowing out of the high-pressure generator is absorbed by the high-pressure liquid refrigerant through the high-pressure evaporator, and the saturated steam condensate is changed into supercooled steam condensate, so that cavitation cannot be generated when the supercooled steam condensate enters the steam condensate pump, an original mode of increasing the height difference between the generator and the steam condensate pump is replaced, and the production efficiency is improved. The cost of a unit pipeline is reduced, meanwhile, the cost of ultrahigh transportation is reduced, heat contained in saturated steam condensate is converted into pressure energy of a high-pressure gaseous refrigerant to be used for driving a composite power generation compressor to work, the pressure energy is converted into electric energy and pressure energy of a low-pressure gaseous refrigerant, and the electric energy is used for a solution pump. The deep utilization of the internal energy of the unit can be realized, and the COP of the unit is improved.

The utility model discloses a flue gas waste heat recovery system, and belongs to the field of heat energy recovery equipment. Comprising TEG equipment, a first heat exchanger, a generator, a condenser, a second heat exchanger, an absorber, an evaporator and a cold storage tower, the hot end inlet of the TEG equipment is connected with external high-temperature flue gas, and the flue gas sequentially passes through the first heat exchanger and the generator and then is discharged to the external environment or subsequent flue gas treatment equipment; refrigerant water is introduced into a cold end inlet of the TEG equipment, the refrigerant water is obtained by liquefying refrigeration steam generated by the generator in the condenser, and the refrigerant water discharged from a cold end outlet of the TEG equipment enters the absorber to be absorbed after being treated by the evaporator. A cooling water inlet of the first heat exchanger is connected with high-temperature cooling water, the high-temperature cooling water is obtained after medium-temperature cooling water from the absorber absorbs heat in the condenser, a cooling water outlet of the first heat exchanger is connected with the absorber, and the absorber is connected with the generator through the second heat exchanger; and the evaporator and the cold storage tower form chilled water circulation.

The present application relates to a system and method for supplying cascade energy using waste heat from a power plant during production. The waste heat from the power plant during production is connected to a heat source inlet of a lithium-bromide absorption chiller and to a waste water inlet of a waste water heat exchanger, and a heat source outlet of the lithium-bromide absorption chiller is connected to the waster water inlet of the waste water heat exchanger and to a water return port of the waste heat from the power plant during production; the lithium-bromide absorption chiller is connected to a chilled water intake line, a chilled water output line, a cooled water intake line and a cooled water discharge line, the cooled water discharge line is connected to a clean water side inlet of the waste water heat exchanger, and a clean water side outlet of the waste water heat exchanger is sequentially connected to a water purification device and a hot water tank; the clean water side inlet of the waste water heat exchanger is connected to a heating water return line, and the clean water side outlet of the waste water heat exchanger is connected to a heating water supply line; and a water outlet of the waste heat from the power plant during production is further connected to a heat source inlet of a solution regenerator, and a waste water outlet of the solution regenerator is connected to the water return port of the waste heat from the power plant during production. The system of the present application has high energy utilization efficiency, thus effectively expanding the range of waste-water waste heat utilization.

The invention discloses a generator-condenser heat exchange coupled automatic cascade absorption type refrigeration cycle system. On the basis of an automatic cascade absorption refrigeration cycle, a non-azeotropic mixed refrigerant and an absorbent are adopted as working media. In the condenser, the mixed refrigerant can release a large amount of temperature slippage heat, the heat is effectively recycled by establishing a coupling heat exchange process between the generator and the condenser, the heating capacity of the generator in the system is reduced, and therefore the COP of circulation is improved. In addition, the system can adjust the refrigeration temperature by replacing the mixed refrigerant, the refrigeration temperature range can be from the room temperature to-100 DEG C or below, and the system has the advantage of being flexible in refrigeration temperature adjustment. Through reasonable arrangement of the generator-condenser coupling heat exchanger, the self-cascade absorption type refrigeration cycle configuration is optimized, the refrigeration efficiency is remarkably improved, the advantages of energy conservation and environmental protection are achieved, the wide refrigeration temperature adjusting range is provided, and the self-cascade absorption type refrigeration cycle system is suitable for various application scenes.

The invention relates to the technical field of low-grade heat utilization, in particular to a jet boosting organic Rankine cycle combined cooling and power generation system and a jet boosting organic Rankine cycle combined cooling and power generation method. The system comprises a generator, a condenser, a working medium pump, a supersonic vapor-liquid two-phase flow ejector, a first evaporator, an expansion machine, a generator, a first throttling valve, a second evaporator, an absorber, a solution pump, a solution heat exchanger and a second throttling valve which are sequentially connected to form a loop. The organic Rankine cycle and the absorption refrigeration cycle are coupled to reduce the pressure of an outlet of an expansion machine, meanwhile, the supersonic vapor-liquid two-phase flow ejector is used for assisting in boosting to save part of consumed power of a power generation side working medium pump, and heat energy of part of superheated steam at an outlet of an absorption refrigeration subsystem generator is recycled; cogeneration is achieved while the heat efficiency is improved, and high technical economy is achieved.

The invention discloses a solar refrigeration device and a permafrost protection method, and belongs to the technical field of permafrost protection.The refrigeration device comprises a solar driving unit, an absorption type refrigeration unit and a cooling capacity transmission unit, and the solar driving unit provides a heat source for a bubble generator of the absorption type refrigeration unit and provides power for circulating flowing of a refrigerant; and a condensation section of the cold energy transmission unit is arranged in the cold storage assembly to absorb cold energy, and the cold energy is transmitted to a permafrost degeneration disease work site where the traffic infrastructure is located through a refrigeration section to protect permafrost. The green refrigeration technology is introduced into the field of traffic infrastructure from the field of building environment, the refrigeration device and the condensation section and the refrigeration section of the cooling capacity transmission unit are separately arranged according to application scenes, the function of protecting permafrost is achieved, and the scene adaptability is high; solar energy is used as a driving source, external power supply is not needed, self-driven operation is achieved, the intelligent degree is high, and green and energy-saving effects are achieved; no moving part exists, and the service life is long; installation is convenient, operation is automatic, and reliability is high.

The utility model relates to the technical field of acid pickling waste liquid resourceful treatment and regeneration, in particular to a tail gas waste heat utilization system of a mixed acid waste liquid treatment system, which is used for treating mixed acid waste liquid and discharging high-temperature tail gas and comprises a first heat exchanger, a second heat exchanger and a refrigerating mechanism. A first heat exchange circulating water path is arranged between the first heat exchanger and the refrigerating mechanism; the first heat exchanger provides a heat source for the refrigerating mechanism by using tail gas heat and reduces the water temperature of the first heat exchange circulating water path by means of the refrigerating mechanism; a second heat exchange circulating water path is arranged between the second heat exchanger and the refrigerating mechanism. The second heat exchanger is further connected to a circulating pipeline of the mixed acid waste liquid treatment system so as to reduce the temperature of circulating liquid. Through the tail gas waste heat utilization system, flue gas waste heat of the mixed acid waste liquid treatment system is effectively recycled, and energy waste is reduced; and the second heat exchanger reduces the circulating liquid temperature of the mixed acid waste liquid treatment system and improves the oxidation efficiency of the flue gas.

The invention provides a system and method for recovering waste heat of a long-voyage ship. The system comprises a waste heat conveying assembly, a Rankine cycle assembly, an absorption type refrigeration cycle assembly and a heat storage type energy storage assembly. The input end of the Rankine cycle assembly and the input end of the heat storage type energy storage assembly are both connected with the waste heat conveying assembly, and the output end of the heat storage type energy storage assembly is connected with the Rankine cycle assembly and the absorption type refrigeration cycle assembly. The waste heat recovery system for the long-voyage ship not only can provide electric energy, but also can provide cold energy, so that the requirements of users can be better met; and meanwhile, through cooperation of the heat accumulating type energy storage assembly, the generating capacity and the refrigerating capacity of the heat accumulating type energy storage assembly can be produced according to the requirements of users, different from a traditional waste heat recovery system, the system energy is more efficient, and then the energy utilization efficiency is improved.

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 invention relates to an energy-saving efficient refrigerating unit and process, and belongs to the technical field of refrigerating equipment. The refrigerating unit comprises a generator, a condenser, an absorber and an evaporator, the condenser is connected with a flow dividing and pressure reducing pipeline, the flow dividing and pressure reducing pipeline divides a liquid refrigerant into two paths and guides the liquid refrigerant into the absorber and the evaporator, and a solution pump is arranged between a rich liquid outlet of the absorber and a rich liquid inlet of the generator. And an ejector is arranged on a pipeline between the barren liquor inlet of the absorber and the barren liquor outlet of the generator. Refrigerant formed in the condenser is divided into two paths and decompressed, one path serves as a cold source of the absorber, replaces circulating water and absorbs heat outside a pipe of the absorber to generate pool type boiling and phase change, the heat transfer efficiency is greatly improved, the refrigeration efficiency can be improved, and the refrigerant serving as liquid refrigerant self-produced by a unit is stable in temperature and low in cost. The device is slightly influenced by high temperature in summer and can be recycled.

The invention relates to the technical field of liquid air energy storage, in particular to a high-heat-storage-density liquid air energy storage system and method.The system comprises an air compression unit, an air liquefaction unit, a liquid air gasification unit, a cold storage unit, a heat storage unit and an air expansion power generation unit; the first input end of the air compression unit is used for inputting ambient air, the second input end of the air compression unit is used for inputting electric power, the first output end of the air compression unit is connected with the first input end of the air liquefaction unit, and the second output end of the air compression unit is connected with the first input end of the heat storage unit. The third input end of the air compression unit is connected with the first output end of the heat storage unit. By optimizing the heat storage density and the compression heat utilization and combining the cascade heat utilization and refrigeration technology, the circulation efficiency and the power generation performance of the liquid air energy storage system are improved, and a more efficient solution is provided for practical application of the liquid air energy storage technology.

A water removal system includes an absorption chiller system and a heat pump system. The absorption chiller system includes a generator section, a condenser section, an evaporator section and an absorber section all in fluid communication and which operate to circulate water as a first refrigerant therethrough. The heat pump system includes a heat pump compressor, a heat pump condenser and a heat pump evaporator all in fluid communication and which operate to circulate a second refrigerant therethrough. The heat pump evaporator is in heat exchange communication with at least one of the condenser section or the absorber section and is configured to evaporate the second refrigerant to transfer heat from the first refrigerant to the second refrigerant. The heat pump condenser is in heat exchange communication with the generator section and is configured to condense the second refrigerant to transfer heat from the second refrigerant to first refrigerant.

In one embodiment, a method (236) of harvesting thermal energy and water from air, the method comprising: receiving a flow of water vapor containing air over a first heat exchanging contactor contained in a chamber in a non-sealed state, the first heat exchanging contactor coated with an adsorbent material that adsorbs water vapor (238); desorbing water vapor from a second adsorbent-coated heat exchanging contactor contained in a chamber in a sealed state under a partial vacuum (240); exchanging thermal energy between the first heat exchanging contactor and the second heat exchanging contactor, wherein heat gained by heat of adsorption in the first heat exchanging contactor transferred to heat the second heat exchanging contactor to aid desorption, wherein heat lost due to the heat of desorption in the second heat exchanging contactor is transferred to cool the first heat exchanging contactor to aid adsorption (242); drawing a vacuum in the sealed chamber to pull air out and desorb, compress, and heat the water vapor (244); condensing water vapor in a condenser under a partial vacuum (246); recovering heat of condensation and liquid condensate from the water vapor in the condenser (248); and repeating the method with the first heat exchanging contactor used for desorbing in a sealed-state and the second heat exchanging contactor used for adsorbing in a non-sealed state (250).

The invention discloses a multi-combined supply system and process based on absorption in the technical field of absorption refrigeration, and the multi-combined supply system comprises an absorption refrigeration unit and further comprises a composite combined heat and power generation assembly; the combined type combined heat and power generation assembly comprises a secondary generator, a medium-pressure evaporator, power generation equipment and a high-pressure absorber, the absorption type refrigerating unit is optimally designed, so that the absorption type refrigerating unit has the functions of refrigerating, heating, power generation and ice making at the same time, the absorption type refrigerating unit is still kept to run at a high load in winter or in the season with the low requirement for the cooling capacity, and the energy consumption is reduced. The problem that the utilization rate of low-grade waste heat is reduced during low-load operation is solved, meanwhile, the low-grade waste heat is converted into electric energy and heat energy, transition and upgrading of energy quality can be achieved, important strategic significance is achieved for energy conservation and emission reduction, the unit can achieve the cooling, heating, power and ice multi-combined supply function, and the energy conservation and emission reduction are achieved. And the application scene is greatly expanded, and the maximum economic benefit of the unit can be exerted.

A metal hydride compressor (1) for compressing hydrogen gas from a state of lower pressure to a state of higher pressure comprises a first pressure vessel (2), said first pressure vessel (2) containing a first metal alloy capable of absorbing hydrogen gas at a first pressure (p1) in an absorption mode of the first pressure vessel (2) to form a first metal hydride. The first metal hydride is capable of desorbing hydrogen gas at a second pressure (p2), higher than the first pressure (p1), in a desorption mode of the first pressure vessel (2) to release hydrogen gas. The metal hydride compressor (1) further comprises a piping system (3) comprising a first inlet line (4) connected to an inlet (5) of the first pressure vessel (2) for receiving hydrogen gas into the first pressure vessel (20), and a first outlet line (6) connected to an outlet (7) of the first pressure vessel (2) for discharging hydrogen gas from the first pressure vessel (2). The piping system (3) further comprises a first cooling loop (8) that is adapted to cool the first metal alloy in the first pressure vessel (2) when hydrogen gas is absorbed at the first pressure (p1) by the first metal alloy to form a first metal hydride. The first cooling loop (8) comprises a first heat exchanger (9). The piping system (3) further comprises a first heating loop (10) that is adapted to heat the first metal hydride in the first pressure vessel (2) when hydrogen gas is desorbed from the first metal hydride at the second pressure (p2), the first heating loop (10) comprising a second heat exchanger (11). The first cooling loop (8) and the first heating loop (10) each comprise a blower (12) to circulate hydrogen gas through the first cooling loop (8) and the first heating loop (10). The first cooling loop (8) is fluidically connectable to the outlet (7) and to the inlet (5) of the first pressure vessel (2) during the absorption mode such that hydrogen gas being discharged from the outlet (7) of the first pressure vessel (2) via the first outlet line (6) of the first pressure vessel (2) is cooled via the first heat exchanger (9) and is then supplied to the inlet (5) of the first pressure vessel (2) via the first inlet line (4) to cool the first metal alloy as the first metal hydride is formed. The first heating loop (10) is fluidically connectable to the outlet (7) and to the inlet (5) of the first pressure vessel (2) during the desorption mode such that hydrogen gas being discharged from the outlet (7) of the first pressure vessel (2) via the first outlet line (6) is heated via the second heat exchanger (11) and is then supplied to the inlet (5) of the first pressure vessel (2) to heat the first metal hydride as hydrogen gas is desorbed. The piping system (3) further comprises a plurality of first switching valves (13) adapted to either connect the first cooling loop (8) or the first heating loop (10) to the outlet (7) and the inlet (5) of the first pressure vessel (2). The piping system (3) further comprises a supply line (16) adapted to fluidically connect a hydrogen source with the first inlet line(4), wherein the supply line (16) comprises a check valve (17) adapted to prevent a backflow of the hydrogen gas towards the hydrogen source and adapted to let through hydrogen gas towards the inlet (5) of the first pressure vessel (2) at a pressure of at most the first pressure (p1). The piping system (3) further comprises a first discharge line (18) fluidically connected to the first outlet line (6) and comprising a first overflow valve (19) adapted to discharge hydrogen gas having a pressure of at least the second pressure (p2).

A composite material for passive cooling includes a porous structure including an expanded graphite and a surfactant, the porous structure being provided with at least one crystalline deliquescent salt that is selected from the group consisting of chloride, bromide, sulphate, and nitrate. The uses of the composite material in passive cooling are also addressed.

The invention belongs to the technical field of hydrogen energy comprehensive utilization, and particularly discloses an electricity, cold and heat multi-combined supply comprehensive utilization system and method based on hydrogen energy, and the electricity, cold and heat multi-combined supply comprehensive utilization system comprises a hydrogen fuel cell system, a heat exchanger, a hydrogen internal combustion engine, a flue gas hot water type lithium bromide unit and a ground source heat pump system. Cooling water of a hydrogen fuel cell system cooling pipe network exchanges heat with a first circulating medium of a heat system in a heat exchanger, and high-temperature flue gas of a hydrogen internal combustion engine flue gas pipe network and cylinder sleeve water of a cylinder sleeve water pipe network exchange heat with the first circulating medium in a flue gas hot water type lithium bromide unit. And the second circulating medium of the cooling system is cooled in the flue gas hot water type lithium bromide unit. The ground source heat pump system comprises a ground source heat pump unit which is used for heat exchange between low-temperature circulating water on the ground source heat pump rock-soil side and a first circulating medium. Hydrogen energy is fully utilized, waste heat generated by power generation of the hydrogen fuel cell and the hydrogen internal combustion engine is utilized for heating and cooling, and gradient utilization of hydrogen energy is achieved.

The invention relates to the technical field of absorption type heat exchange and heat supply technologies, in particular to an intelligent large-temperature-difference absorption type heat exchange unit and a heat exchange method.The intelligent large-temperature-difference absorption type heat exchange unit comprises an I-type unit, an II-type unit and a control system.The I-type unit and the II-type unit each comprise a heat pump host, a generator, a condenser, an evaporator, an absorber, a heat exchanger and heat exchange liquid; the heat exchange liquid conducts cascade heat exchange in the generator, the condenser, the evaporator, the absorber and the heat exchanger, the heat exchange liquid comprises a lithium bromide solution and refrigerant water, the control system comprises a controller and a standby plate heat exchange module, and the two heat pump main machines are both in communication connection with the controller. The multi-stage evaporation and multi-stage absorption process is adopted, cascade heat exchange can be achieved, and the temperature difference of inlets and outlets of the I-type unit and the II-type unit is increased, so that the outlet temperature of the units is reduced, irreversible heat transfer loss in the units is reduced, and the efficiency of the units is improved.

The utility model discloses a photovoltaic energy storage system for a zero-carbon park, which belongs to the field of photovoltaic application and comprises a photovoltaic power generation unit, a solid energy storage unit and an energy output unit, the solid energy storage unit is used for storing electric energy of the photovoltaic power generation unit and electric energy of the photovoltaic power generation unit in a valley electricity stage, and the solid energy storage unit is provided with a heat storage brick spacing regulator; the energy output unit is used for supplying energy to park processing and production; the solid energy storage unit and the photovoltaic power generation unit are connected with the energy output unit. The photovoltaic energy storage system for the zero-carbon park with the structure is used for supplying energy to the park, energy supply of steam production, building refrigeration and heating and high-temperature heat conduction oil is achieved through the energy output unit, and the functional requirements of different application scenes are met.

The utility model discloses a compression condensing unit with waste heat recovery precooling, which comprises a compression type refrigerating system, an absorption type refrigerating system and a secondary refrigerant circulating system, and the absorption type refrigerating system comprises a waste heat generator, a second condenser, a second throttle valve, a second evaporator, an absorber and a solution pump. The secondary refrigerant circulating system comprises a secondary refrigerant loop and a heat exchanger, the hot side of the second evaporator and the cold side of the heat exchanger are connected in the secondary refrigerant loop, and the hot side of the heat exchanger is connected between the compressor and the first condenser; the second evaporator transmits cold energy into the compression type refrigerant system through a secondary refrigerant in the secondary refrigerant loop and the heat exchanger, and refrigerant steam before entering the first condenser is pre-cooled. Waste heat generated in industrial production is used for driving the absorption type refrigeration system, the condenser of the compression type refrigeration system is pre-cooled through cold energy provided by absorption type refrigeration, and the energy utilization rate is effectively increased.

The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circuit.

The utility model discloses a cold and heat cogeneration type lithium bromide unit. A condenser, a generator, a first absorber and a first evaporator are combined to form an absorption refrigerator, and the condenser, the generator, a second absorber and a second evaporator are combined to form an absorption heat pump; an inlet of the three-way valve is connected with a waste heat source, a first outlet of the three-way valve is connected with a tube pass of the generator, and a second outlet of the three-way valve is connected with a tube pass of the second evaporator; the cooling water pipeline is connected with the tube pass of the condenser and the tube pass of the first absorber; the heating water pipe is communicated with the tube pass of the second absorber; the refrigerating water pipe is connected with the tube pass of the first evaporator; according to the scheme, simultaneous refrigeration and heating of one set of equipment are achieved, and the refrigeration and heating capacity can be adjusted according to customer requirements.

The invention provides a self-adaptive variable multi-stage absorption refrigerating machine and a data center waste heat recovery cooling system. The refrigerator includes an evaporator; a condenser; the solution flow path switching module is used for adjusting the operation number of the absorption refrigeration subsystems; and at least two absorption refrigeration subsystems, in each of which the solution heat exchanger is simultaneously in fluid communication with the absorber and the generator. The mass coupling mechanism that refrigerant steam generated by a generator of the upper-stage absorption refrigeration subsystem directly enters an absorber of the lower-stage absorption refrigeration subsystem to be absorbed is utilized, a multi-stage absorption refrigeration cycle with the middle pressure gradient is constructed, and the temperature of an effective driving heat source is reduced to 45-50 DEG C. In addition, the solution flow path switching module is configured to dynamically reconstruct the solution flow path topology, and the unit can be adaptively and preferentially switched among multiple operation modes, so that efficient operation under the variable working conditions all the year round is kept.

A three-way heat exchanger operable to transfer heat between a heat transfer fluid, a liquid desiccant, and air. The three-way heat exchanger includes an airflow inlet, an airflow outlet, and panel assemblies arranged with airflow gaps defined between adjacent panel assemblies to allow the air to flow between the airflow inlet and the airflow outlet in an airflow direction. Each panel assembly includes a frame defining a heat transfer fluid channel for channeling a flow of the heat transfer fluid through the panel assembly and a membrane positioned on the frame and defining a desiccant channel for a flow of the liquid desiccant. The frame has a leading edge proximate the airflow inlet and a trailing edge proximate the airflow outlet. The leading edges of the frames of the panel assemblies each include a leading edge aerodynamic feature.