58 results about "Absorption compression" patented technology

The invention discloses a heat storage device in a heat storage type compressed air energy storage system and an energy storage and release method. A working mode that a cold tank and a hot tank are shared is adopted, and energy savers are arranged between spherical tanks, so that fatigue damage generated by gas at the tops of the cold tank and the hot tank can be reduced, and energy loss generated by cold and hot mixing can be reduced; specifically, in the energy storage process of the heat storage device, low-temperature water enters another spherical tank after passing through an inverted tank pump and a compressor side heat exchange system in the energy storage and release heat exchange system, the low-temperature water absorbs heat on the compressor side and then is guided into the spherical tank, and steam in the spherical tank flows to an energy saver from a corresponding gas phase pipe; the water in the bypass pipe flows back into the spherical tank after heat exchange and condensation with bypass water flowing through the energy saver, fatigue damage caused by the fact that high-temperature gas in the spherical tank flows into other cold-state spherical tanks is avoided, meanwhile, the water in the bypass pipe flows back into the spherical tank after absorbing heat of the steam through the energy saver, and meanwhile the heat in the steam can be absorbed through the energy saver. And heat loss is avoided.

This invention discloses a compressed air energy storage system and its operation method, belonging to the field of physical energy storage technology. It includes a compressed air energy storage module, a transcritical carbon dioxide heat pump module, an electric heating module, and a heat storage module. The compressed air energy storage module includes an air compressor unit. The heat absorption side of the transcritical carbon dioxide heat pump module is coupled to the interstage cooling circuit of the air compressor unit to absorb compression heat and cool the interstage air. The heat release side is coupled to a first heat storage unit to upgrade the compression heat into high-grade heat storage. The high-pressure stage compression circuit is coupled to a second heat storage unit to transfer the high-pressure stage compression heat. The electric heating module uses electrical energy components unsuitable for driving the compressor to supplement and raise the temperature of the heat storage medium in the second heat storage unit, forming a secondary high-grade heat storage. During energy release, the high-pressure air is first preheated using the secondary high-grade heat and then reheated between stages using the high-grade heat. This invention achieves a comprehensive performance improvement by reducing compression power consumption, increasing work capacity, and completely absorbing fluctuating electrical energy.

The application provides a compressed air energy storage power generation system based on cascade utilization of photothermal heat compensation and flash evaporation, and relates to the technical field of energy storage power generation. Air is compressed by a multistage compressor through an air compression heat exchange unit, high-pressure air is obtained, heat generated by compressed air is absorbed by low-temperature water, high-temperature water is obtained, an expansion power generation system is used, a multistage expander is used, high-temperature heat conducting oil obtained by the high-temperature water and a photothermal heat collection unit is used to heat input high-pressure gas of each stage of the expander in sequence, power generation is performed, electric energy, exhaust gas of the last stage of the expander, medium-temperature water and low-temperature heat conducting oil are obtained, high-grade energy utilization is realized, heat of the medium-temperature water is converted into electric energy by a flash evaporation power generation system, medium-grade energy utilization is realized, low-grade energy utilization is realized through preheating, the problem that the existing compressed air energy storage power generation system cannot realize cascade utilization of high, medium and low-grade energy is solved, and the application is suitable for energy storage power generation.

The invention discloses a refrigeration house system, a control method and device thereof and a storage medium. The maximum boundary value in the working temperature range of the low-temperature evaporator is smaller than the minimum boundary value in the working temperature range of the medium-temperature evaporator; a condenser; comprising an output port, a first input port communicated with the output end of the condenser and a second input port communicated with the output end of the low-temperature evaporator, and the output port is communicated with the throttling valve and the input end of the medium-temperature evaporator. One end of the compressor is communicated with the output end of the medium-temperature evaporator, and the other end of the compressor is communicated with the input end of the condenser; a medium temperature defrosting heater; the output end of the low-temperature defrosting heater communicates with the input end of the medium-temperature defrosting heater; and a heat accumulator. The refrigeration cycle of the refrigeration storage system is achieved through the cooperation of the two evaporators with different working temperatures, the heat accumulator is used for absorbing the waste heat of the compressor to defrost the evaporators, the frosting probability of the evaporators is reduced, and the frosting energy consumption is reduced.

The invention discloses a liquid piston and water foam compounded multi-stage isothermal compression device and method, the device mainly comprises a low-pressure compression cavity and a high-pressure compression cavity, the liquid piston is utilized to realize preliminary compression of gas, and the water foam is introduced in the multi-stage compression process to enhance heat exchange. Gas compressed by the low-pressure compression cavity is introduced into a liquid working medium at the bottom of the high-pressure compression cavity, water foam is spontaneously generated, compression heat is efficiently absorbed through the large specific surface area of the foam, and the nearly isothermal compression process is achieved. According to the device, single-stage power loss is reduced through multi-stage compression, the throttling valve is used for regulating and controlling the gas inlet rate so as to control foam generation, a liquid working medium is recycled through the gas-liquid separation mechanism, and therefore the system energy efficiency and the output gas purity are improved. Different from an existing mode of generating foam by depending on an additional power mechanism, the device can form foam by directly blowing the low-pressure compressed gas into the liquid without additional energy consumption, so that the efficiency and the economical efficiency of the compressed air energy storage system can be remarkably improved.

The present invention relates to an A-CAES system comprising: a compressed-air storage device for storing air; a low-pressure compressor unit for compressing supplied air to a first air pressure and a first air temperature; a high-temperature heat exchanger system containing a high-temperature heat storage medium for cooling the air compressed in the low-pressure compressor unit, this cooling being brought about by the heat storage medium taking up heat of compression of the air, wherein the high-temperature heat storage medium is heated to a first heat-store temperature with a first heat-store pressure by the taking-up of the heat of compression; a medium- or high-pressure compressor unit for compressing the air downstream of the high-temperature heat exchanger system in further compression stages to a store-air pressure; a low-temperature heat exchanger system containing a low-temperature heat storage medium for cooling the air from the medium- or high-pressure compressor unit to a store-air temperature by taking up heat of compression of the air compressed in the medium- or high-pressure compressor unit, wherein the low-temperature heat storage medium is heated to a second heat-store temperature with a second heat-store pressure by the taking-up of the heat of compression of the air; and an air pipeline system, which connects the following in the flow direction: the low-pressure compressor unit to the high-temperature heat exchanger system, the high-temperature heat exchanger system to the medium- or high-pressure compressor unit, the medium- or high-pressure compressor unit to the low-temperature heat exchanger system and the low-temperature heat exchanger system to the compressed-air storage device, in order to supply and store the air in the compressed-air storage device with the store-air pressure and the store-air temperature.

The invention discloses a fuel cell-turbine engine hybrid power system utilizing liquid ammonia intercooling regenerative heat, and relates to the technical field of aero-engines, the fuel cell-turbine engine hybrid power system comprises an air inlet channel, an air compressor set, a combustion chamber, a turbine set, an exhaust nozzle, a solid oxide fuel cell, an energy management module, a liquid ammonia supply loop and an electric drive loop; liquid ammonia absorbs heat of compressed air in the intercooler and then is vaporized, then absorbs heat of turbine exhaust in the ammonia decomposition hydrogen production chemical regenerator and is decomposed into hydrogen-rich gas, and the hydrogen-rich gas is conveyed to an anode of a fuel cell; electric energy of the fuel cell is transmitted to the motor through the energy management module to drive the gas compressor, and mechanical decoupling of the gas compressor and the turbine is achieved. The turbine set drives the generator to generate electric energy for the propeller. Through physical and chemical heat sinks of liquid ammonia, the efficient power generation characteristic of the fuel cell and the high power density advantage of the turbine engine, efficient gradient utilization of energy and comprehensive improvement of the energy efficiency and the carbon reduction effect of an aviation power system are achieved.

The invention relates to the technical field of compressor protection, and discloses an automobile air conditioner compressor protection device which comprises a protection shell, a plurality of fixed arcs are fixedly connected to the inner wall of the protection shell, a water conveying cavity is formed in each fixed arc, and two sealing blocks are slidably connected to the interior of each water conveying cavity. And one sides of the two sealing blocks fixedly communicate with connecting pipes, a stainless steel hose fixedly communicates between the two connecting pipes, and a telescopic arc is fixedly connected between the two sealing blocks. Through cooperative use of the fixed circular arc, the telescopic circular arc, the sealing block, the connecting pipe, the stainless steel hose and other structures, cooling liquid is injected into the sealing water conveying cavity surrounding the body and circulates, the working heat of the compressor is directly and efficiently absorbed and discharged through the water outlet pipe, and the situation that in the high-temperature environment of an engine compartment, traditional air cooling is not affected is avoided. And the heat dissipation efficiency is low due to high air inlet temperature and small temperature difference.

The invention discloses an absorption and compression high-temperature heat pump system with a synergistic ejector. The absorption and compression high-temperature heat pump system comprises a compression type heat pump, an absorption type heat pump and the ejector. The compression heat pump comprises a gas-liquid separator, a compressor, an intermediate heat exchanger and a working medium pump, a gas phase outlet of the gas-liquid separator, the compressor, the intermediate heat exchanger, the ejector and an inlet of the gas-liquid separator are sequentially connected, and the working medium pump is connected between a liquid phase outlet of the gas-liquid separator and the intermediate heat exchanger. A first outlet of the solution heat exchanger and an inlet of the expansion valve generator are sequentially connected, a first outlet of the generator is connected with the ejector, a second outlet of the generator is connected with an inlet of the solution pump, an outlet of the solution pump is connected with a second inlet of the solution heat exchanger, and a second outlet of the solution heat exchanger is connected with a second inlet of the absorber. The heat supply efficiency of the absorption heat pump can be improved, and the problems that due to the fact that the exhaust temperature of the compressor is too high, lubricating oil is cracked, and the high-temperature heat supply compression ratio is too large are solved.

The invention relates to the technical field of water heaters, in particular to a phase change heat pump system and a control method thereof.The phase change heat pump system comprises an energy storage box, a phase change material, a condenser and a heat exchanger are arranged in the energy storage box, and the condenser and the heat exchanger are both wrapped by the phase change material; a water inlet of the heat exchanger is connected with a water supply pipeline, a water outlet of the heat exchanger is connected with a hot water output end, and the phase change material stores heat through the condenser so as to heat water in the heat exchanger into hot water. Compared with the prior art, the heat energy generated by the compressor is absorbed by the phase-change material through the condenser and stored in a latent heat form, a sensible heat storage mode of pre-storing hot water in the water storage tank is replaced, and the problem of bacterium breeding caused by long-term retention of the hot water is avoided.

The utility model discloses a Roots screw composite compressor, and belongs to the field of compressors. The compressor mainly comprises a compressor assembly, the compressor assembly is sleeved with a protection assembly, the compressor assembly comprises a machine body, an air inlet pipe is fixedly installed on the machine body, air outlet pipes are fixedly installed at the two ends of the machine body, a cavity is formed in the machine body, and two sets of rotors close to each other are installed in an inner bearing of the machine body; the protective assembly comprises a protective cover, the protective cover can be matched with the outer side of the compressor body in shape and structure, according to the Roots screw composite compressor, the protective assembly is arranged, and the protective cover has an elastic effect, so that the impact force of the outside on the compressor assembly can be effectively buffered, and damage to parts such as the compressor body caused by accidental collision is reduced; and meanwhile, vibration generated by operation of the compressor assembly can be absorbed, fatigue damage of vibration to all parts such as a rotor is reduced, and the service life of equipment is prolonged.

The utility model discloses a device for preparing high-purity oxygen based on a coupling separation technology, which comprises at least one compression device, a set of control assembly, at least one set of drying device and at least one set of separation device, the compression device, the drying device and the separation device are sequentially connected, the drying device and the separation device are connected with a plurality of valves, and the valves are connected with the control assembly. The control assembly controls opening and closing of the valve, and a dynamic buffer tank capable of absorbing air generated by the compression equipment is connected between the compression equipment and the drying device. The utility model has the following advantages and effects: unqualified gas can be recovered to reduce energy loss, and the oxygen production effect is better.

This invention discloses a multi-stage subcooled ammonia absorption-compression composite refrigeration system and method driven by compressor exhaust waste heat. The system includes an absorber, a preheater, a first-stage precooler, a generator, a distillation unit, and a second-stage precooler. Ammonia heat exchange occurs in the preheater's inlet and return liquid paths; ammonia and liquid ammonia exchange in the first-stage precooler; and ammonia and a mixed gas exchange in the generator. The absorber outlet is sequentially connected to the preheater inlet, the first-stage precooler ammonia path, the generator ammonia path, the preheater return liquid path, and the absorber inlet. The generator outlet is sequentially connected to the compressor, the generator mixed gas path, and the mixed gas inlet. The liquid ammonia outlet is sequentially connected to the first-stage precooler liquid ammonia path, the second-stage precooler inlet, the evaporator, the second-stage precooler return liquid path, and the absorber inlet. This solution uses high-temperature exhaust waste heat and external waste heat as the driving force for refrigeration, achieving maximum energy utilization through waste heat recovery and refrigeration cycle.

The invention discloses an absorption-compression heat pump and open compression coupled superheated steam generation system, and relates to the field of superheated steam generation. Comprising a compression type sub-circulation evaporator and a heat exchange pipeline thereof, a preheater and a heat exchange pipeline thereof, a generator and a heat exchange pipeline thereof, an absorption type sub-circulation evaporator and a heat exchange pipeline thereof, an absorption type sub-circulation condenser and a heat exchange pipeline thereof, an absorber and a heat exchange pipeline thereof, a heat exchanger, a solution pump, a refrigerant pump, a water pump, a first throttle valve and a second throttle valve, a refrigerant compressor, a water vapor compressor and a corresponding connecting pipeline. The absorption-compression coupling heat pump is used for extracting heat energy from air and improving the quality of the heat energy, energy consumption can be remarkably reduced, the compressor is used for increasing the steam pressure and the superheat degree, # imgabs0 # loss caused in the heat exchange process can be effectively reduced through multi-stage water supply heating, and therefore the steam generation efficiency of the system is further improved, and the energy consumption of the system is reduced. And the energy consumption for producing the superheated steam is reduced.

The utility model provides a compression-resistant assembly, including base plate, bearing plate, support rod, shock absorption compression-resistant piece and stationary fixture, the number of support rod is provided with two, the left and right symmetry is provided on the base plate, the bearing plate is provided with the guide hole corresponding to the support rod, the shock absorption compression-resistant piece is provided with the guide hole, the fixed fixture is provided with the shock absorption compression-resistant piece, and the fixed fixture is provided with the shock absorption compression-resistant piece. The bearing plate is slidably mounted on the supporting rods through the guide holes and is arranged above the bottom plate; the groove type bridge frame is installed on the bearing plate through the fixing clamp, after the bearing plate is pressed, the first connecting rod and the second connecting rod generate downward rotation fluctuation at the same time, kinetic energy generated when the first connecting rod and the second connecting rod rotate can be effectively absorbed through the damping spring shock absorber, and then the longitudinal wave shock absorption and pressure resistance effects are achieved; meanwhile, the bottom plate also shares the force applied to the bearing plate by the cable, the supporting stability is improved, the heat dissipation positioning holes in the groove type bridge are used for achieving heat dissipation and can be matched with the positioning rods to achieve fixing and positioning, and the fixing stability of the bridge body is improved.

The present invention provides a two-stage absorption-compression heat-coupled heat pump system and operating method, comprising a compression heat pump sub-circulation system comprising a compressor, a compression cycle condenser, and a compression cycle evaporator, the compressor, multiple compression cycle condensers, and compression cycle evaporators being sequentially connected by pipelines; and a two-stage absorption heat pump sub-circulation system comprising a high-pressure absorber, a low-pressure absorber, a generator, a solution heat recovery device, an absorption cycle condenser, and an absorption cycle low-pressure evaporator. By providing the compression heat pump sub-circulation system and the two-stage absorption heat pump sub-circulation system, the temperature rise capability of the compression heat pump and the efficiency of the two-stage absorption heat pump are improved. This system also provides an efficient circulation method for raising the temperature of low-grade heat sources and recovering waste heat, and helps improve the efficiency of waste heat recovery.

The utility model provides a scroll compressor, and particularly, the scroll compressor comprises a shell, a scroll assembly and a silencer; wherein a pressure isolation plate is arranged in the shell, and the shell is divided into a high-pressure cavity and a low-pressure cavity through the pressure isolation plate; the vortex assembly is arranged in the low-pressure cavity, a compression chamber for compressing refrigerant gas is formed in the vortex assembly, and the vortex assembly is configured to be controlled by the motor to compress the refrigerant gas and discharge the compressed refrigerant gas to the high-pressure cavity; the silencer is located in the high-pressure cavity and fixedly arranged on the shell so as to absorb noise generated in the process that the compressed refrigerant gas is discharged into the high-pressure cavity. The silencer is fixedly arranged on the shell, so that the size of the silencer is not easily limited by other structures, and the silencing effect of the silencer can be effectively improved.

The invention discloses a compressor applied to an air conditioner of a railway vehicle, which is characterized in that a junction box is arranged outside a shell, a heat absorption part is arranged at the top of the shell, the heat absorption part is configured to absorb heat generated when the compressor works, a heat conduction part extends along the outside of the shell, and a heating fastening part is arranged outside the shell. The junction box is arranged on the heating fastening part, one end of the heat conduction part is connected with the heat absorption part, the other end of the heat conduction part is connected with the heating fastening part, the heat conduction part is configured to conduct heat of the heat absorption part to the heating fastening part, and the heating fastening part is configured to heat the junction box. According to the scheme, waste heat generated when the compressor works is used for actively heating the junction box, so that the potential insulation hazard caused by condensation of the junction box is more efficiently solved.

This utility model discloses an absorption-compression high-temperature heat pump system for recovering waste heat. Its two-stage compression heat pump system includes high and low pressure compressors, a compression system condenser and evaporator, and a medium- and low-temperature waste heat recovery evaporator. The high-temperature absorption heat pump system includes a high-temperature absorber, a high-temperature solution heat exchanger, a high-temperature generator, an evaporative condenser, and a high-temperature evaporator. The low-temperature absorption heat pump system includes a low-temperature solution heat exchanger, a low-temperature absorber, a low-temperature generator, a low-temperature condenser, and an evaporative condenser. The absorption heat pump-driven heat source water system includes a compression system condenser, high and low temperature generators, and a high-temperature evaporator. The waste heat recovery water system includes a compression system evaporator and a low-temperature condenser. Its structure is compact, the heat flow path is clear, and internal heat is recycled. It recovers waste heat while achieving efficient thermal coupling between the compression and absorption stages, increasing the heat generation temperature. It has a wide range of applications and meets the needs of energy saving and high-temperature heating.

The invention relates to the technical field of high-temperature heat pumps, in particular to an absorption and compression medium-high temperature heat pump system which comprises a medium-temperature output subsystem and a high-temperature output subsystem. The medium-temperature output subsystem comprises a low-pressure absorber, a second liquid pump, a second solution throttle valve, a first heat exchanger, a medium-pressure generator and a condenser which are connected; an independent medium-temperature output loop is constructed by additionally arranging a low-pressure absorber, a medium-pressure generator, a first heat exchanger and other core components, and output of high-temperature steam of 150 DEG C or above and medium-temperature hot water of about 60 DEG C can be achieved at the same time; the high-temperature loop is responsible for outputting high-temperature steam, the medium-temperature loop is responsible for outputting medium-temperature hot water, the heat exchange temperature difference of cold and hot fluid is reduced through hierarchical design, and irreversible loss is reduced; through modular integration of the high-temperature output subsystem and the medium-temperature output subsystem, only a small number of components such as the low-pressure absorber, the medium-pressure generator and the first heat exchanger are additionally arranged, the double-temperature output requirement can be met at the same time, the number of heat exchange equipment, valves and pipelines is reduced, the structure is simplified, and the cost is reduced.

The invention relates to the technical field of heat management of air conditioning equipment, and discloses an air conditioner compressor operating environment optimization method based on radiation refrigeration, which comprises a phase change energy storage unit, a heat transfer loop unit and a self-adaptive system of a radiation heat dissipation unit. The phase change energy storage unit is used for absorbing heat of the compressor, and heat shock is buffered through phase change latent heat; a temperature control valve in the heat transport loop unit passively controls on or off of a loop based on a temperature threshold value, so that self-adaptive heat transport is realized; and the radiation heat dissipation unit radiates heat to the outside by utilizing a spectrum selective structure. Under a low-load or night working condition, thermal resetting of the phase change medium is realized through continuous heat dissipation, and surface attachments are removed by using condensed water generated on the surface in cooperation with the micro-nano composite super-hydrophobic structure. Through a multi-stage passive thermal control mechanism, the temperature fluctuation of the compressor is effectively stabilized, self-cleaning is realized by utilizing a condensation phenomenon, and the technical problem that the radiation heat dissipation performance is attenuated along with accumulated dust is solved.

This utility model discloses a heat dissipation and noise reduction structure for a negative ion generator, including a base, a compressor, and a fan. The compressor is mounted on the base via a shock-absorbing column, and a partition is provided between the base and the compressor. The partition has an opening for the shock-absorbing column to pass through. A shielding cover is fitted over the compressor, and the fan is fixed to the top of the shielding cover. The partition has a mesh structure located directly below the compressor. The base is divided into a first noise reduction chamber, a second noise reduction chamber, a third noise reduction chamber, and a fourth noise reduction chamber. The first noise reduction chamber is located below the mesh structure of the partition, and the third and fourth noise reduction chambers are connected to the exhaust port on the base. This utility model uses a shielding cover with sound-absorbing cotton attached to the outside of the compressor to absorb the noise generated during compressor operation; a mesh partition is set between the shielding cover and the base to optimize airflow distribution; and multiple noise reduction chambers are set in the base to effectively attenuate noise of different frequencies, improving the noise reduction effect.

The application relates to a heat storage defrosting system, an air conditioner and a control method, and relates to the technical field of air conditioners, and solves the problem that, in the prior art, when a unit is defrosted, heat supply to a user is stopped, causing indoor environment temperature to fluctuate. The heat storage defrosting system comprises a heat storage module, a defrosting module and a refrigerant circulation module, wherein the heat storage module is arranged outside a compressor motor in the refrigerant circulation module, the defrosting module is arranged around a fin heat exchanger in the refrigerant circulation module, when the unit needs to be defrosted or the like, heat carrier in a heat exchange pipeline in the heat storage module can absorb heat generated by the compressor motor and is transported to the defrosting module, the defrosting module sprays the heat carrier towards the fin heat exchanger, heating circulation does not need to be stopped, and defrosting operation can be performed through the separately arranged defrosting module. The heat storage defrosting system can be operated without stopping heating when defrosting, so that the indoor temperature is not affected.

The invention discloses a refrigeration display cabinet condensate water multistage self-evaporation cooperative control device and method. The device comprises a heat compensation device, an evaporator, a condensate water storage tank, a compressor, a PCM module, a condenser, an evaporation water tank and an ultrasonic atomization device. The heat compensation device is connected with the PCM module and the ultrasonic atomization device and used for storing heat for the PCM module and supplying power to the ultrasonic atomization device. The evaporator is connected with the compressor; the condensate water storage tank is connected with the evaporation water tank; the compressor and the condenser are connected with the evaporation water tank; the PCM module is used for absorbing condensation waste heat generated in the operation process of the compressor and releasing the absorbed heat when the compressor is shut down so as to evaporate condensate water in the evaporation water tank. The condensate water collecting tank is arranged behind the condenser and tightly attached to the PCM cavity, condensation waste heat is absorbed and stored by the PCM, the PCM releases heat to heat condensate water after the compressor is shut down, waste heat recycling is achieved, and the energy-saving effect is achieved.

The invention discloses a heat utilization device of an air source heat pump compressor driver, which comprises a heat absorption device used for absorbing heat generated during operation of the compressor driver; the heat dissipation device is used for heating the air cooling heat exchanger to restrain freezing; the heat circulating pipeline is connected with the heat absorption device and the heat dissipation device and is used for transferring heat from the heat absorption device to the heat dissipation device through a circulating medium in the heat circulating pipeline; the circulating pump is mounted on the heat circulating pipeline and used for driving the circulating medium to circularly flow in the heat circulating pipeline; the control unit is connected with the circulating pump and used for controlling operation of the circulating pump; the heat storage device is arranged in the heat circulation pipeline, the heat storage device comprises a sealed container and at least one heat exchanger, and the space between the heat exchanger and the wall of the sealed container is filled with a phase change heat storage material; and the temperature sensor is arranged on the compressor driver. The problem of freezing of the air-cooled heat exchanger is solved by recycling waste heat generated during operation of the compressor driver.

The invention provides a liquid air energy storage system coupled with thermochemical energy storage, and particularly relates to the technical field of energy storage.The liquid air energy storage system coupled with thermochemical energy storage comprises a liquid air energy storage unit and a thermochemical energy storage unit, and the thermochemical energy storage unit comprises a desorption device, a first storage tank, an absorption device and a second storage tank; a first heat exchanger is arranged in the desorption device, a second heat exchanger is arranged in the absorption device, compression heat is efficiently stored through the thermochemical energy storage unit, after the desorption device absorbs the compression heat, a working medium in the desorption device is desorbed, a gas-phase refrigerant and a concentrated solution are formed, and in the peak period of energy consumption, the gas-phase refrigerant and the concentrated solution are separated. By means of the liquid air energy storage system coupled with thermochemical energy storage, peak load shifting of electricity / heat energy can be achieved, the demand for electricity / heat energy on the load side can be quickly and flexibly responded, and the power generation power and the energy efficiency of the system are improved.

A thermal management system and a vehicle. The thermal management system comprises a solid-state cooling module (104) and a compressor (101), wherein the solid-state cooling module is used for releasing heat to a thermal management loop in which the compressor is located when the thermal management system is executing a heating function; and / or, the solid-state cooling module is used for absorbing heat from the thermal management loop in which the compressor is located when the thermal management system is executing a cooling function. The solid-state cooling module comprises a first metal plate (201), a solid-state cooler (203) and a second metal plate (202), wherein the first metal plate is internally provided with a flow channel that allows a fluid to flow therethrough, and the solid-state cooler is used for implementing heat exchange between the first metal plate and the second metal plate. By means of such a configuration, the thermal management system can maintain efficient operation even in an overly cold or overly hot environment.

The invention relates to the technical field of compressed air energy storage, and discloses an absorption heat pump coupling water pumping compressed air energy storage energy storage system and an operation method. The energy storage system comprises a compressed air subsystem, a heat exchange subsystem and a heat pump circulation subsystem. And an air compressor and a water pumping generator set in the compressed air subsystem can compress air in the water-air co-containing cabin. A heat exchanger in the heat exchange subsystem can absorb heat generated in the air compressing process to heat a low-temperature heat exchange medium into a high-temperature heat exchange medium. And then the high-temperature heat exchange medium enters a generator of the heat pump circulation subsystem. And the solvent is driven by the high-temperature heat exchange medium to sequentially circulate among the generator, the condenser, the evaporator and the absorber. Heat generated in the air compression process is extracted through the heat exchange subsystem, the heat pump circulation subsystem is driven to operate, and a solvent changes the physical state in the circulation process and can be utilized in different modes, so that the heat in the air compression stage is utilized, and energy waste is avoided.

The present application discloses a cold storage system and its control method, device, and storage medium. The system includes: a medium-temperature evaporator; a low-temperature evaporator whose maximum boundary value within its operating temperature range is less than the minimum boundary value within the medium-temperature evaporator's operating temperature range; a condenser; an ejector including an output port, a first input port connected to the output end of the condenser, and a second input port connected to the output end of the low-temperature evaporator, the output port being respectively connected to a throttle valve and the input end of the medium-temperature evaporator; a compressor having one end connected to the output end of the medium-temperature evaporator and the other end connected to the input end of the condenser; a medium-temperature defrost heater; a low-temperature defrost heater, the output end of which is connected to the input end of the medium-temperature defrost heater; and a heat accumulator. The cold storage system is refrigerated by the two evaporators with different operating temperatures working together to achieve a refrigeration cycle. The heat accumulator absorbs waste heat from the compressor to defrost the evaporator, thereby reducing the probability of frost formation on the evaporator and reducing frosting energy consumption.