371 results about "Subcooling" patented technology

The embodiment of the invention provides a refrigerator performance prediction method and device, electronic equipment and a storage medium, and belongs to the technical field of refrigerators. The method comprises the steps that operation state parameters of a refrigerating machine unit are obtained, the refrigerating machine unit comprises a refrigerant system, the refrigerant system comprises an evaporator, a condenser and a compressor, and the operation state parameters comprise the first saturation temperature and the steam superheat degree of the evaporator, the second saturation temperature and the liquid supercooling degree of the condenser and the exhaust temperature of the compressor; calculating a first energy efficiency coefficient of the refrigerant system according to the first saturation temperature, the steam superheat degree, the second saturation temperature, the liquid supercooling degree and the exhaust temperature; obtaining rolling bearing transmission efficiency and motor efficiency of the refrigerator unit; and calculating a second energy efficiency coefficient of the refrigerator unit according to the rolling bearing transmission efficiency, the motor efficiency and the first energy efficiency coefficient. According to the embodiment, the accuracy of refrigerator performance prediction can be improved.

The invention provides a low-temperature heat pump liquid impact prevention and supercooling degree strengthening control method based on dual-mode self-adaptive regulation and control, which comprises the following steps: monitoring the bottom temperature of a gas-liquid separator and the change rate of the temperature, and controlling the supercooling degree of the gas-liquid separator on the basis of the difference value between the temperature and a preset safety critical temperature and the difference value between the change rate and a preset minimum temperature rise rate, constructing a liquid impact risk index; based on the liquid impact risk index, the pulse power excitation intensity is calculated, the number of opened spraying channels is selected according to the pulse power excitation intensity, the pulse duty ratio of each channel is adjusted, the high-temperature gas-state refrigerant is controlled to be injected into the bottom of the gas-liquid separator, and the liquid-state refrigerant is driven to evaporate; generating a mode switching score, and generating a mode switching signal when the mode switching score exceeds a mode switching threshold value and the temperature of the gas-liquid separator reaches a safety lower limit; and according to the mode switching signal, a supercooling degree strengthening mode is switched, and the opening degree of an economizer branch electronic expansion valve is adjusted according to the deviation between the current supercooling degree and the target supercooling degree.

The invention relates to the technical field of new energy automobile heat management, and belongs to an indirect heat pump heat management system for a new energy automobile. Battery outlet water and warm core outlet water are converged and then shunted through a waterway integration mode of a five-way valve and a proportional three-way valve, and the flow is distributed through the proportional three-way valve; the mixed water enters the battery to control the water inlet temperature of the battery, so that a water-water heat exchanger can be saved, and the effects of reducing cost and improving efficiency are achieved; on the aspect of the agent side, a large-diameter electronic expansion valve is arranged at an outlet of the water-cooling condenser, the internal flow and state of the water-cooling condenser are actively controlled by adjusting the opening degree of the large-diameter electronic expansion valve, the supercooling degree can be increased, the superheat degree can be restrained, the heat exchange capacity and the accurate control capacity can be enhanced, and heating and dehumidification outlet air temperature control in spring and autumn can be better achieved.

The invention relates to the technical field of molten salt, in particular to nitro binary molten salt and a preparation method thereof. The preparation method comprises the following steps: mixing sodium carbonate and a potassium hydroxide solution, and then adding a starch-based grafted crystal inhibitor to inhibit crystallization; adding a nitric acid aqueous solution in two stages, and introducing eutectic seed crystals to guide nucleation at the end of the first stage; crystal distribution is optimized through falling film evaporation and concentration and setting of partial reflux; and after spraying granulation, carrying out short-time melting reforming and controlled cooling in an inert atmosphere. According to the method, the composition uniformity and the structural stability of the molten salt are remarkably improved, so that the product has a melting point close to a theoretical eutectic point, low supercooling degree, high melting latent heat and excellent thermal cycling stability and corrosion resistance, and is suitable for an industrial heat storage system running for a long time.

The utility model relates to the field of air conditioners, and particularly discloses a variable-flow-path heat exchanger and an air conditioner outdoor unit, the variable-flow-path heat exchanger comprises a single-cooling condenser core body, an inlet pipe assembly and an outlet pipe assembly, the single-cooling condenser core body comprises a refrigerant overheating section, and the refrigerant overheating section is communicated with the inlet pipe assembly; the refrigerant two-phase section is communicated with the refrigerant overheating section, one end of the outlet pipe assembly is communicated with the refrigerant overheating section, and the other end of the outlet pipe assembly is communicated with the refrigerant two-phase section; the refrigerant supercooling section communicates with the refrigerant two-phase section, and the refrigerant supercooling section communicates with the end, away from the refrigerant superheating section, of the inlet pipe assembly; and the heat exchange areas of the refrigerant superheating section, the refrigerant two-phase section and the refrigerant supercooling section are sequentially reduced. According to the scheme, in the process, the gas-liquid state switching of the refrigerant is matched with the heat exchange area of the refrigerant superheating section, the refrigerant two-phase section and the refrigerant supercooling section in size, so that the refrigerant keeps a stable speed when flowing in the single-cooling condenser core, and the heat exchange efficiency is improved.

The present invention relates to a bismuth alloy composition and a design method thereof. The alloy composition according to the present invention is an alloy composition comprising bismuth and a second element. The second element selected on the basis of an atomic radius difference between constituent atoms and mixing enthalpy is alloyed in an appropriate content according to a principle of improving liquid stability to provide an alloy composition satisfying a low melting point and a high degree of supercooling and exhibiting excellent flowability, which can be used as a liquid metal ion source.

The invention relates to the technical field of new energy automobile heat management, and belongs to a variable heat return quantity heat management system based on a new energy automobile R290 refrigerant, which can realize the functions of a refrigeration mode, a heat pump heating mode, a hot gas bypass mode and the like. The intermediate heat exchanger is used as a forced supercooling section and a heat regenerator of a water-cooling condenser in a refrigeration mode, and is used as an economizer in a heating mode; through the bypass ERV + EXV throttling mode, the refrigerant flow passing through the intermediate heat exchanger can be dynamically adjusted according to different compressor rotating speeds and suction superheat degrees, and the problem that the suction superheat degree is large when the intermediate heat exchanger is matched with different refrigerant flows is solved. The air suction superheat degree can be accurately adjusted, the COP is improved compared with a traditional system, and meanwhile the reliability of the compressor is guaranteed.

The invention belongs to the related technical field of additive manufacturing, and discloses an electron beam melting wire liquid nitrogen copious cooling additive manufacturing method and system.The method comprises the steps that in the electron beam melting printing forming process, liquid nitrogen is sprayed to a molten printing wire under electron beam irradiation, and the liquid nitrogen is sprayed to the molten printing wire; the molten printing wires are subjected to nitridation reaction under the action of electron beams while being subjected to liquid nitrogen cryogenic cooling, so that the crystal structure of a formed part is regulated and controlled, and the mechanical performance is enhanced; and / or liquid nitrogen is sprayed to the printing wire material which begins to be solidified, so that the printing wire material is subjected to liquid nitrogen deep cooling, and the crystal structure of the formed part is regulated and controlled to achieve mechanical property enhancement. Liquid nitrogen is introduced into the electron beam additive manufacturing device for deep cooling, the extruded printing wire is solidified at an extremely high cooling speed after being melted, a large number of homogeneous nucleation sites are formed in a melting area due to the high supercooling degree, the solidification speed is high, a microstructure is customized into uniform and fine equiaxed crystals, the strength and toughness of the material are improved, and the production cost is reduced. The mechanical property is improved.

The application provides a kind of shaped phase change material and its preparation method.The phase change material includes the following component materials according to mass percentage: 45.8-56.7% of dodecahydrate disodium hydrogen phosphate, 7.9-22.9% of sodium carbonate decahydrate, 7.6-15.9% of sodium sulfate decahydrate, 2.46-4.05% of reinforcing material, and 15-20% of adsorption material.The preparation of the phase change material includes the following steps: 1, preparing materials;2, preparing inorganic salt mixture;3, preparing molten inorganic salt mixture;4, preparing mixture and sealing;5, preparing shaped phase change material.The shaped phase change material prepared by the application has suitable phase change temperature, higher latent heat of phase change, no liquid leakage, no toxicity and non-combustibility, small supercooling degree, and no phase separation;at the same time, for the application occasions requiring transportation and storage between 20-30℃, the shaped phase change material can be used as an effective normal temperature cold storage agent to resist low temperature environment and protect specific chemicals and medicines from temperature fluctuation.

The invention discloses a reinforcement learning control method for a novel ship cooling system, and the method comprises the steps: determining an input measured value and an output action value of the novel ship cooling system, the input measured value is a state parameter strongly related to a vacuum degree / supercooling degree control target, and the output action value comprises the opening degree of a spraying valve and the rotating speed of a condensate water circulating pump; a reinforcement learning reward function is constructed, and the influence degree of the development process of the seawater heat exchanger on the vacuum degree / supercooling degree is reflected through the reward function; network parameter off-line training is carried out, wherein the network parameter off-line training comprises strategy network off-line training and value network off-line training; and deploying the strategy network and the value network after offline training to a novel cooling system control device, and performing online optimization on strategy network parameters and value network parameters until a vacuum degree / supercooling degree control effect required by an application is met. The control precision, the reliability and the operation efficiency of the novel cooling system of the ship can be improved.

The present application discloses an immersion cooling apparatus and an electronic device. The immersion cooling apparatus comprises a condensation module, a liquid storage module, a pump body and a heat exchange module. The condensation module is used to connect to a cooling module, and the cooling module is used accommodate a heating device. The liquid storage module is connected to the condensation module, and the liquid storage module is connected to the cooling module by means of the pump body. The pump body is used to convey a working medium contained in the liquid storage module to the cooling module. A housing of the heat exchange module is provided with a first heat exchange interface and a second heat exchange interface, a heat exchange flow channel is disposed in the heat exchange module, and the heat exchange flow channel is connected to the first heat exchange interface and the second heat exchange interface. The first heat exchange interface is in communication with the liquid storage module, and the second heat exchange interface is connected to the pump body. In the described solution, the heat exchange module can exchange heat with a liquid working medium in the liquid storage module, reducing the temperature of the liquid working medium, increasing the degree of supercooling of the liquid working medium, and preventing cavitation of the pump body, which can improve reliability of the pump body, and thereby improve reliability of a whole working medium circulating refrigeration system.

A method operating an HVAC system is provided. The method includes receiving a concentration of refrigerant. The method includes operating the HVAC system in a leak diagnostic mode if the concentration exceeds a gas concentration threshold. The method includes turning on a compressor to compress the refrigerant. The method includes receiving a first saturated liquid temperature and a first subcooled liquid temperature, and determining a first subcooled value based on the difference. The method includes turning off the compressor for a duration, and turning on the compressor after the duration has elapsed. The method includes receiving a second saturated liquid temperature and a second subcooled liquid temperature, and determining a second subcooled value based on the difference. The method includes determining that the first refrigerant circuit includes a refrigerant leak if the second subcooled value or the first subcooled value exceeds a subcooled threshold value.

The invention relates to a zero-loss methane propellant supercooling filling system and method, and the system comprises a liquid nitrogen supply unit, a methane supply unit, a supercooling methane storage tank, a heat exchange pipeline unit and a temperature control unit; the heat exchange pipeline unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a separation and recovery module; the liquid nitrogen supply unit is connected with the cold end of the first heat exchanger. The cold ends of the first heat exchanger, the second heat exchanger and the third heat exchanger are sequentially connected in series. Methane output by the methane supply unit exchanges heat with the third heat exchanger and then is input into the supercooled methane storage tank; methane output by the exhaust end of the supercooled methane storage tank exchanges heat with the second heat exchanger and then is input into the separation and recovery module; and the separation and recovery module is connected with the supercooled methane storage tank and the methane supply unit and is used for converging the recovered methane into the supercooled methane storage tank and / or returning the recovered methane to the methane supply unit. According to the method, freezing in methane supercooling filling is effectively avoided, and lossless filling is achieved.

The invention discloses a liquid hydrogen filling device and method, and belongs to the technical field of liquid hydrogen. The device comprises a liquid hydrogen supply tank, a liquid hydrogen receiving tank, a filling pipeline and a pressurizing pipeline, the bottom of the liquid hydrogen supply tank is communicated with the bottom of the liquid hydrogen receiving tank through a filling pipeline; evaporation ends of the low-temperature heat pipes are positioned in the hydrogen adsorption module, and condensation ends of the low-temperature heat pipes are positioned in the metal cavity and are provided with metal fins; the head end of the pressurizing pipeline is divided into two branches, the first branch is connected with the filling pipeline, the first pressurizing valve, the intermittent heater and the metal cavity, the second branch is connected with the top of the liquid hydrogen receiving tank and the second pressurizing valve, and the two branches are combined and then connected with the liquid hydrogen supply tank. The pressure in the receiving tank in the filling process is reduced through the hydrogen adsorption module, the filling success rate is increased, meanwhile, liquid hydrogen is used for conducting non-contact cooling on the hydrogen adsorption module, vaporized hydrogen obtained after cooling serves as pressurized gas of the supply tank, the pressure in the hydrogen adsorption module is kept stable, and a certain supercooling degree is provided for operation of the liquid hydrogen pump.

In the conventional refrigerant leakage detection method, when a failure occurs in the temperature sensor or the pressure sensor, the refrigerant leakage may not be detected.SOLUTION: The refrigerant leakage detection system 1 includes the chiller 10 and the input unit 110. The chilled water chiller 10 has a refrigerant circuit 50 through which a refrigerant circulates. The input unit 110 acquires the degree of supercooling and the expansion valve opening degree from the cold water chiller 10. The controller 120 performs refrigerant leakage determination using the degree of subcooling, or refrigerant leakage determination using the expansion valve opening degree. When the priority of the refrigerant leak determination using the degree of subcooling is higher than the priority of the refrigerant leak determination using the expansion valve opening degree, the controller 120 switches between the refrigerant leak determination using the degree of subcooling and the refrigerant leak determination using the expansion valve opening degree on the basis of whether or not the degree of subcooling is normal.SELECTED DRAWING: Figure 4

The invention provides an inorganic salt / carbon aerogel composite phase change material and a preparation method thereof, and belongs to the technical field of phase change material preparation. The composite phase change material is prepared through electrochemical stripping, HF etching, freeze drying, high-temperature carbonization and vacuum impregnation. The electrochemical exfoliated graphene and the TiC / carbon aerogel are combined together through self-assembly to construct a heterogeneous interface and increase effective nucleation sites, so that the energy potential barrier of phonon scattering and nucleation is reduced, and the thermal conductivity is improved while the degree of supercooling is reduced; the aerogel adsorbing the inorganic salt phase change material forms hydrogel with a compact network through self-assembly, crystallization of the hydrated salt is promoted, and the hydrated salt inorganic phase change material is limited in a porous material by utilizing the confinement effect of a nano material, so that the hydrated salt inorganic phase change material is not easy to leak, and relatively good latent heat is maintained.

The utility model relates to the technical field of air conditioners, in particular to a composite cooling air conditioning system which comprises an outdoor heat exchange assembly, an indoor heat exchange assembly and a refrigerant power assembly. The outdoor heat exchange assembly comprises a cooling tower, a water-cooling heat exchanger and an air-cooling heat exchanger; the water-cooling heat exchanger is communicated with the air-cooling heat exchanger; a pre-cooling piece and a water supply assembly are arranged in the cooling tower; cooling liquid of the water supply assembly is in contact with the water-cooling heat exchanger after passing through the pre-cooling piece. An outdoor fan is arranged on the air outlet side of the air-cooled heat exchanger; and the pre-cooling piece is arranged between the air-cooling heat exchanger and the water-cooling heat exchanger. Refrigerant is firstly condensed and cooled in the air-cooling heat exchanger and then enters the water-cooling heat exchanger to be cooled for the second time, and the cooling mode of the water-cooling condenser is air cooling and water cooling, so that the temperature of the refrigerant is lower, the supercooling degree of the refrigerant in the system is improved, and the condensation enthalpy difference value of the refrigerant is increased; therefore, the whole system is more energy-saving in the operation process.

This invention discloses a method for preparing a uniform microstructure on the surface of a containerless solidified niobium alloy for a space station, relating to the field of containerless materials science experimental technology. The method first screens for highly supercooled samples suitable for preparing a uniform microstructure using this method in containerless space station experiments; calculates or experimentally determines the primary phase dendrite growth rate, the cooling rate coefficient of radiative heat dissipation during the cooling stage, and the primary phase nucleation rate; and conducts containerless space station experiments to allow the niobium alloy to undergo deep supercooling and rapid solidification within a determined suitable supercooling range, thus obtaining a solidified alloy sample with a uniform surface microstructure. This invention actively controls the distribution of dendrites and eutectic phases, resulting in a surface microstructure with uniformly distributed dendrites and interdendritic eutectic phases.

The embodiment of the present application discloses a supercooling degree control method, device and system. The supercooling degree includes at least one of the supercooling degree of the condenser outlet and the supercooling degree of the expansion valve inlet. The inlet of the condenser is communicated with the compressor, the outlet of the condenser is communicated with the evaporator, the expansion valve and the electromagnetic valve are arranged in the communication pipeline of the condenser and the evaporator, the condensing fan is arranged near the condenser, the control method comprises: obtaining the current temperature and pressure of the condenser outlet and the current temperature and pressure of the expansion valve inlet; determining the current supercooling degree of the condenser outlet according to the current temperature and pressure of the condenser outlet, and determining the current supercooling degree of the expansion valve inlet according to the current temperature and pressure of the expansion valve inlet; and controlling the working state of the condensing fan, the expansion valve and the electromagnetic valve according to the current supercooling degree of the condenser outlet and the current supercooling degree of the expansion valve inlet. The supercooling degree control method, device and system provided by the embodiment of the present application can improve the control reliability.

A refrigerant amount estimation device and the like are provided that improve the accuracy of estimating the remaining refrigerant amount regardless of the piping length. [Solution] A refrigerant amount estimation device estimates the amount of remaining refrigerant in an air conditioner that includes an outdoor unit having a compressor, an outdoor heat exchanger, and an expansion valve, and an indoor unit having an indoor heat exchanger, and that is equipped with a refrigerant circuit formed by connecting the outdoor unit and the indoor unit with refrigerant piping, and through which refrigerant circulates in the refrigerant circuit. The refrigerant amount estimation device has a control unit that estimates the amount of remaining refrigerant using a learning model in which a state quantity that is correlated with at least the degree of subcooling and the piping length of the refrigerant piping is learned in association with the amount of remaining refrigerant.

The invention discloses a preparation method of a titanium alloy containing a dispersed nano precipitated phase. The method comprises the following steps: 1, heating and melting a spherical titanium alloy in an electrostatic suspension device; secondly, the spherical titanium alloy is melted and overheated, the laser is turned off after heat preservation, and when the liquid alloy melt is solidified again and the temperature drops, the laser is turned on again, and the process is repeated, so that the liquid alloy melt reaches the preset supercooling degree; thirdly, the liquid alloy melt is rapidly solidified at the preset supercooling degree; fourthly, the static suspension system is closed, and products fall into a container containing the liquid alloy to be cooled; and 5, packaging the cooled product, and then carrying out heat treatment. According to the method, the rapid solidification coupling heat treatment process is adopted, the distribution and size of the precipitated phase of the titanium alloy are effectively regulated and controlled through the genetic effect of the solidification structure, the titanium alloy containing the dispersed nanometer precipitated phase is obtained, collaborative optimization of the strength and plasticity of the titanium alloy is achieved, and the method is suitable for the field of aerospace.

The application relates to an air conditioner control method and device, air conditioner equipment, a storage medium and a computer program product. The current operating parameter and the current condenser inlet air temperature of an air conditioner in a refrigeration mode are acquired, the current supercooling degree prediction value is obtained by performing supercooling degree prediction based on the current operating parameter of the air conditioner, the current supercooling degree target value is determined according to the current condenser inlet air temperature, finally, the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioner adjustment strategy. The application can predict the supercooling degree at the condenser outlet by using the existing system parameters of a portable air source heat pump air conditioner, without modifying the structure and adding additional hardware equipment, thereby improving the adaptive adjustment capability of the air conditioner condenser and optimizing the control strategy of the portable air source heat pump air conditioner.

The embodiment of the invention provides an estimation method and device for refrigerant stock of a refrigerating system and the refrigerating system. The method comprises the steps that first temperature information and first pressure information of a refrigerant at an outlet of a condenser and second temperature information of a refrigerant at an inlet of an expansion valve are obtained; according to the first pressure information and the first temperature information, the supercooling degree of an outlet of the condenser is determined; according to the difference between the supercooling degree of the outlet of the condenser and a preset supercooling degree threshold value, it is judged that abnormal flash gas exists in the refrigerating system; according to the first temperature information, the second temperature information and latent heat of vaporization of the refrigerant under the first pressure information, the flash gas ratio is calculated, the supercooling degree of an outlet of the condenser is corrected, and the corrected supercooling degree is obtained; and according to the corrected supercooling degree of the condenser outlet, the refrigerant stock of the refrigerating system is estimated based on a correlation model of the corrected supercooling degree of the condenser outlet and the refrigerant stock. According to the technical scheme provided by the embodiment of the invention, the accuracy of quality estimation of the refrigerant stock can be improved.

The invention discloses a subcooler and a deep subcooler for a refrigerating system and a control method of the subcooler and the deep subcooler, and belongs to the technical field of refrigeration. The deep subcooler comprises a subcooling heat exchange unit, an independent cold source loop and a pressure control valve; the supercooling heat exchange unit is connected between the high-pressure liquid reservoir and the throttling device in series, and the primary liquid refrigerant is deeply cooled to be equal to or close to the target value of the evaporation temperature through low-temperature cooling capacity provided by a low-pressure evaporation system or an independent cold source loop. The independent cold source is driven by a compressor with the minimum refrigerating capacity in the system, and an air return pipeline of the independent cold source is bridged with air return pipelines of other compressors of the system through an outlet pressure balance valve, so that the surplus refrigerating capacity is fully utilized. The evaporation pressure of a cold source loop is changed by monitoring the supercooled liquid temperature and feeding back and adjusting the opening degree of a pressure control valve, precise closed-loop control over the supercooled temperature is achieved, throttling flash gas can be remarkably reduced or even eliminated, the effective refrigerating capacity of unit refrigerant and the heat exchange efficiency of an evaporator are improved, and the system energy efficiency is greatly improved.

A heat pump system according to an aspect of the disclosed invention may include: a compressor for compressing a refrigerant; a refrigerant-water heat exchanger performing heat exchange between the compressed refrigerant and the introduced water; an expansion valve for expanding the refrigerant condensed in the refrigerant-water heat exchanger; an outdoor heat exchanger performing heat exchange between the refrigerant expanded by the expansion valve and outdoor air; a high-pressure sensor for sensing a high-pressure saturation temperature of the refrigerant compressed in the compressor; the water inlet temperature sensor is used for sensing the temperature of water entering the refrigerant-water heat exchanger; the condensation temperature sensor is used for sensing the temperature of the refrigerant condensed in the refrigerant-water heat exchanger; the outdoor temperature sensor is used for sensing the outdoor temperature; the control component determines the reference supercooling degree of the refrigerant based on the sensing results of the outdoor temperature sensor and the water inlet temperature sensor and the operation frequency of the compressor, determines the current supercooling degree of the refrigerant based on the sensing results of the high pressure sensor and the condensation temperature sensor, and compares the reference supercooling degree with the current supercooling degree. To determine whether there is a refrigerant leak.

The application provides a control method, a control device and a heat pump system, and the control method comprises the following steps: obtaining the exhaust temperature of a compressor; determining whether the exhaust temperature of the compressor meets a first set temperature condition; obtaining the supercooling degree of the economizer; and adjusting the main electronic expansion valve and / or the auxiliary electronic expansion valve according to the interval range of the supercooling degree of the economizer. The application provides a control method, a control device and a heat pump system, and the supercooling degree of the economizer is detected and determined when the exhaust temperature is too high and needs to be inhibited, the supercooling degree of the economizer is detected, the auxiliary valve is adjusted while the main valve is closed, the supercooling degree of the economizer is increased, the air supplement is increased, and the exhaust temperature is reduced.

The invention discloses a measurement device and a measurement method for a solution crystallization growth rate, relates to the technical field of solution crystallization measurement equipment, and mainly aims to provide a measurement device capable of simply, conveniently and intuitively measuring the one-dimensional crystallization growth rate of a solvent in a solution with different compositions and different supercooling degrees. According to the main technical scheme, the device for measuring the crystallization growth rate of the solution comprises a constant-temperature part, a temperature measuring part and a control part, one end of a first circulating pipeline is connected to the first thermostatic bath, the other end of the first circulating pipeline is connected to the upper side surface of the first sleeve, one end of a second circulating pipeline is connected to the first thermostatic bath, and the other end of the second circulating pipeline is connected to the lower side surface of the first sleeve; the first sleeve is sleeved outside the sample tube component, and one end of the sample tube component is inserted into the second thermostatic bath; and the shooting end of the camera part faces the first sleeve. The method is mainly used for measuring the crystallization rate of the solution.

According to the heat management system and the energy storage equipment provided by the embodiment of the invention, the multiple flow channels on the refrigerant substrate are arranged on the same flow channel plate, and the first flow channel used for receiving the refrigerant flowing out of the evaporator and the second flow channel used for receiving the refrigerant flowing out of the condenser on the flow channel plate are adjacently arranged through the shared pipe wall in a targeted manner; the first flow channel and the second flow channel exchange heat through the shared pipe wall, so that the superheat degree of a refrigerant flowing out of the evaporator can be improved, the supercooling degree of a refrigerant flowing out of the condenser can be reduced, and the overall energy efficiency of the heat management system can be improved, for example, the refrigeration energy efficiency of a battery pack can be improved. Due to the fact that the first flow channel and the second flow channel are adjacently arranged through the shared pipe wall in a targeted mode, and the multiple flow channels on the refrigerant base plate are arranged on the same flow channel plate, the situation that the overall energy efficiency of the heat management system is affected due to heat mixing among the multiple flow channels on the refrigerant base plate can be avoided.

This disclosure discloses an air conditioning indoor unit, a control method, a controller, and an air conditioning system, relating to the field of air conditioning unit technology. The air conditioning indoor unit includes: a liquid pipe comprising a first section and a second section, one end of the second section connected to the first section and the other end connected to the evaporator inlet pipe; a throttling element disposed on the second section and configured to throttle the refrigerant flowing from the first section into the second section; and a heat exchange element configured to exchange heat between the throttled refrigerant in the second section and the refrigerant in the first section. With this air conditioning indoor unit, the subcooling of the refrigerant before throttling can be increased with or without adding any components, saving space and cost for the indoor unit.

The invention provides an efficient air conditioner refrigeration cycle device with a radiation subcooler, and belongs to the technical field of air conditioner refrigeration. A radiation subcooler is connected to a working medium flowing pipeline between the outlet end of a condenser and the inlet end of an expansion valve in series and used for conducting radiation heat exchange cooling on a high-temperature and high-pressure liquid working medium discharged from the condenser; the radiation subcooler comprises a subcooler shell, wherein the outer surface of the subcooler shell is coated with a high-radiation coating; the working medium heat exchange tube is arranged in the subcooler shell and is distributed in a spiral or snake shape; and the spoiler is of a spiral blade structure, is arranged on the outer wall of the working medium heat exchange tube in a sleeving manner and is tightly attached to the working medium heat exchange tube. The high-temperature and high-pressure liquid working medium flowing out of the condenser is further cooled through radiation heat exchange, so that the supercooling degree of the working medium is remarkably improved, the refrigeration cycle efficiency is improved, and the energy consumption of the air conditioner is effectively reduced.