Aerosol and cloud interaction verification experiment cabin system and simulation method

Abstract

The application belongs to the technical field of space environment simulation, and particularly relates to an aerosol and cloud interaction verification experiment cabin system and a simulation method. The application comprises an experiment cabin, a temperature control assembly and a vacuum air pumping assembly. The temperature control assembly comprises a temperature rising sub-module, which comprises a high-temperature cold carrier storage tank, a main loop pump and an expansion module. The temperature control assembly further comprises a temperature falling sub-module, which comprises a cooling tower, a unit cooling pump, a low-temperature brine unit, a cold carrier pump and a low-temperature cold carrier storage tank. The vacuum air pumping assembly comprises a vacuum pump, a fan, a first regulating valve CV1 and a second regulating valve CV2 located on a gas supplement pipeline. The application not only provides a basic platform for artificial simulation control of aerosol and cloud environment, but also has reasonable module layout and comprehensive functions, and is simple and convenient to operate, which is conducive to effective development of aerosol and cloud interaction research.

Description

Technical Field

[0001] This invention belongs to the field of space environment simulation technology, specifically relating to an aerosol-cloud interaction verification experimental chamber system and simulation method. Background Technology

[0002] Environmental and climate change are major challenges facing human society today. Understanding the physical and chemical processes of the Earth's atmosphere and their interactions with solid and liquid aerosols, and exploring the formation and transformation mechanisms of atmospheric composite pollution and its interaction with meteorological factors, are fundamental to studying the ecological, health, and climate effects of air pollution, and to developing methods for predicting and forecasting regional severe weather and sudden environmental events. Currently, there are three main methods for monitoring clouds / aerosols: ground-based monitoring, airborne monitoring, and satellite monitoring. Relevant details are described in Chinese Patent Publication No. CN101769831B, entitled "A Collection Device for Fog and Automatically Sorted Aerosols and Its Application Method," and Chinese Patent Publication No. CN106556559A, entitled "A Monitoring Method, Device, and System for Clouds / Aerosols." However, ground-based monitoring methods can only obtain cloud / aerosol data at single points, making it difficult to acquire information on large-scale, vertically distributed clouds. Airborne monitoring can use lidar, but it cannot measure the temporal changes of clouds / aerosols over a fixed area, and its operating time is limited by adverse weather and air traffic control. Satellite monitoring targets large-scale global data, but its resolution is poor, and its orbital limitations prevent continuous monitoring of fixed points. Therefore, establishing an experimental chamber system for verifying the interaction between aerosols and clouds / fog, and artificially simulating the aerosol and cloud / fog environment to provide an effective spatial environment for research on the interaction between aerosols and clouds / fog, is particularly important. Currently, there are no design precedents for such experimental chamber systems in the industry; therefore, how to develop an experimental chamber system for verifying the interaction between aerosols and clouds / fog, so as to realize the artificial simulation and control of the aerosol and cloud / fog environment, and thus conduct multiphase atmospheric (photo)chemical research such as aerosol and cloud chemistry, has become a pressing technical challenge to be solved in this field. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an experimental chamber system for verifying the interaction between aerosols and clouds. This system not only provides a basic platform for the artificial simulation and control of aerosol and cloud environments, but also has a reasonable module layout, comprehensive functions, and simple and convenient operation, which is conducive to the effective development of research on the interaction between aerosols and clouds.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An experimental chamber system for verifying the interaction between aerosols and clouds / fog is characterized by comprising: an experimental chamber with a heat exchange layer arranged on its outer wall, a temperature control component connected to the heat exchange layer, and a vacuum pumping component connected to the inner cavity of the experimental chamber, wherein:

[0006] The temperature control component includes a heating submodule, which includes a self-heating high-temperature refrigerant storage tank. The high-temperature refrigerant is discharged from the outlet of the high-temperature refrigerant storage tank, enters the heat exchange layer inlet through the inlet pipeline with the main loop pump, and flows back to the high-temperature refrigerant storage tank through the return pipeline connected to the heat exchange layer outlet. An expansion module is also connected across the inlet pipeline and the return pipeline. The temperature control component also includes a cooling submodule, which includes a cooling tower. The medium at the cooling tower passes sequentially through the unit cooling pump, the low-temperature brine unit, and the refrigerant pump before connecting to the low-temperature refrigerant storage tank. The inlet of the low-temperature refrigerant storage tank is connected to a section of the return pipeline between the high-temperature refrigerant storage tank and the main loop pump, and the outlet of the low-temperature refrigerant storage tank is connected to the inlet pipeline.

[0007] The vacuum pumping assembly includes a vacuum pump; along the pumping direction, the gas inside the experimental chamber enters the inlet of the vacuum pump sequentially through the fan and the first regulating valve CV1; a gas supply line is connected to a section of pipeline between the fan and the vacuum pump, and a second regulating valve CV2 is arranged on the gas supply line.

[0008] Preferably, the temperature control component also includes a first three-way valve TWV1 connected in series on the inlet pipe at the inlet of the main circuit pump, and the side outlet of the first three-way valve TWV1 is connected to the return pipe.

[0009] Preferably, the low-temperature brine unit includes a first low-temperature brine unit with a temperature range of -40 to +10℃ and a second low-temperature brine unit with a temperature range of -70 to -40℃; after the medium at the cooling tower is drawn out by the unit's cooling pump, it is divided into two branches connected to the low-temperature refrigerant storage tank. One branch is equipped with the first low-temperature brine unit, and the other branch is connected in series with the second low-temperature brine unit, the second three-way valve TWV2, ​​and the refrigerant pump; the side outlet of the second three-way valve TWV2 is connected to the outlet of the first low-temperature brine unit.

[0010] Preferably, it also includes a stirring assembly, which includes a magnetic impeller coaxially arranged in the inner cavity of the experimental chamber, and a magnetic source arranged outside the experimental chamber, so that the magnetic impeller located in the inner cavity of the experimental chamber is driven by the magnetic force of the magnetic source to generate a rotational motion.

[0011] Preferably, the system also includes a repressurization assembly that connects to the interior of the experimental chamber, the repressurization assembly including an automatic air valve and a manual air valve connected in parallel with each other.

[0012] Preferably, the system also includes a sensor group arranged in the inner cavity of the experimental chamber. The temperature signal obtained by the sensor group is transmitted to a temperature transmitter, which then sends it to a PID controller. The PID controller analyzes the data and adjusts the working state of the temperature control component. The pressure signal obtained by the sensor group is converted into a readable standard voltage signal, which is sent to the PID controller. After analysis and processing, the PID controller adjusts the pumping speed of the vacuum pump.

[0013] Preferably, the sensor group includes a first temperature and humidity sensor HT1, a second temperature and humidity sensor HT2, and a pressure sensor P1 arranged sequentially along the axial direction of the experimental chamber, with equal spacing between them. On a cross-section perpendicular to the axis of the experimental chamber, the first temperature and humidity sensor HT1, the second temperature and humidity sensor HT2, and the pressure sensor P1 are all located at a radius 1 / 2 off the axis. It also includes three or more sets of temperature and pressure sensors PT1 attached to the inner wall of the experimental chamber, with each temperature and pressure sensor PT1 arranged sequentially and evenly along the axial direction of the experimental chamber. It also includes a first temperature sensor T1 arranged sequentially and evenly along the axial direction of the experimental chamber and a second temperature sensor T2 arranged sequentially and evenly along the radial direction of the cross-section. One set of third temperature sensors T3 for measuring the boundary layer temperature is arranged on the inner wall of the experimental chamber, and the other third temperature sensors T3 are arranged sequentially and progressively inward along the radial direction of the experimental chamber.

[0014] Preferably, the internal volume of the experimental chamber is not less than 8.5m³. 3 The temperature range of the experimental chamber at 101325 Pa is -50 to +40℃.

[0015] Preferably, the experimental chamber wall structure comprises, from the outside to the inside, a first stainless steel plate surface layer, a polyurethane foam insulation layer, a second stainless steel plate surface layer, a heat exchange layer, and a third inner stainless steel chamber wall.

[0016] Preferably, the simulation method, which applies the aforementioned aerosol-cloud interaction verification experimental chamber system, is characterized by comprising the following steps:

[0017] S1. Low-temperature environment simulation steps:

[0018] S1-1, The unit's cooling pump transports the air-cooled water in the cooling tower to the low-temperature brine unit, thereby reducing the water temperature to -40 to +10℃ and -70 to -40℃.

[0019] S1-2, The low-temperature brine unit transports low-temperature water to a low-temperature refrigerant storage tank for storage;

[0020] S1-3. The cryogenic coolant in the cryogenic coolant storage tank is transported to the heat exchange layer of the experimental chamber by the main loop pump to reduce the temperature of the experimental chamber.

[0021] S1-4. By adjusting the flow rates of the high-temperature coolant in the high-temperature coolant storage tank and the low-temperature coolant in the low-temperature coolant storage tank, the temperature of the coolant is changed, thereby regulating the cooling rate of the experimental chamber.

[0022] S2. High-temperature environment simulation steps:

[0023] S2-1, The electric heating belt at the high-temperature refrigerant storage tank is working to heat the high-temperature refrigerant inside;

[0024] S2-2, The high-temperature refrigerant expands and cools through the expansion module to regulate the temperature of the high-temperature refrigerant;

[0025] S2-3. The main circuit pump transports the high-temperature refrigerant, which has reached the target temperature, to the heat exchange layer of the experimental chamber, so that the experimental chamber can be heated.

[0026] S3. Vacuum Environment Simulation Steps:

[0027] S3-1. Depending on the control pressure and pumping speed requirements of the experimental chamber, select to open the first regulating valve CV1 of the vacuum pump to extract the gas inside the experimental chamber at different rates.

[0028] S3-2. By monitoring the rate of temperature decrease of the gas inside the experimental chamber using a vacuum gauge for monitoring the inner cavity of the experimental chamber, or by adjusting the pumping speed of the vacuum pump or the opening of the first regulating valve CV1, the evacuation rate can be controlled to change the target vacuum level; or by adjusting the opening of the second regulating valve CV2, the target vacuum level can be reduced; thereby achieving the purpose of controlling the rate of temperature decrease of the gas inside the experimental chamber.

[0029] S4. Simulation steps for a gas-solid mixed environment:

[0030] The speed of the magnetic impeller can be varied according to the input power supply. The rotation of the magnetic impeller is used to achieve the mixing of gaseous medium and solid particles in the experimental chamber and to ensure the uniformity of temperature in the chamber.

[0031] Preferably, it also includes a high-temperature cleaning step, specifically including:

[0032] S5-1. Turn on the vacuum pump to evacuate the air, so that the pressure inside the experimental chamber drops to below 104Pa; the electric heating belt at the high-temperature refrigerant storage tank works to heat the high-temperature refrigerant inside, so that the temperature of the high-temperature refrigerant rises to between 60-80℃.

[0033] S5-2, the first three-way valve TWV1 is opened, and the main circuit pump transports the high-temperature refrigerant to the heat exchange layer of the experimental chamber. The temperature inside the experimental chamber rises through flow heat exchange, which causes the impurity gas attached to the inside of the experimental chamber to be desorbed and evaporated, and then pumped out of the chamber by the vacuum pumping assembly.

[0034] The beneficial effects of this invention are as follows:

[0035] 1) Through the above-described scheme, this invention, by combining the temperature control component and the vacuum pumping component, can simulate special working conditions such as high and low temperature environments and vacuum environments inside the chamber. This invention not only provides a basic platform for the artificial simulation and control of aerosol and cloud environments, but also features a reasonable module layout, comprehensive functions, and simple and convenient operation. It also facilitates the effective development of research on the interaction between aerosols and clouds, yielding significant results.

[0036] 2) This invention constructs multiple systems, including a temperature control system, a vacuum pumping component, and even a hybrid system. Each component is modular and detachable, and can be used to match different testing machines.

[0037] 3) The wall structure design of the experimental chamber in this invention has good thermal insulation performance, and the expansion module and each flow regulating valve group also realize the changes in the flow rate and temperature of the high-temperature and low-temperature refrigerant, which also ensures the high efficiency of temperature regulation of the experimental chamber.

[0038] 4) The design of the sensor array provides a fundamental guarantee for the effective monitoring of temperature and pressure within the chamber. Simultaneously, it enables the invention to monitor temperature and pressure data in multiple spaces within the experimental chamber, allowing for timely understanding of temperature changes in various spaces within the system, thus facilitating automated and intelligent monitoring. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention;

[0040] Figure 2 This is a schematic diagram showing the arrangement of the sensor array within the experimental chamber.

[0041] The actual correspondence between the reference numerals and component names in this invention is as follows:

[0042] 10-Experimental chamber; 11-Heat exchange layer;

[0043] 20-Temperature control component; 21-High temperature refrigerant storage tank; 22-Main circuit pump; 23-Expansion module; 24-Cooling tower; 25-Unit cooling pump; 26-Refrigerant pump; 27-Low temperature refrigerant storage tank; 28a-First low temperature brine unit; 28b-Second low temperature brine unit;

[0044] 30 - Vacuum pumping assembly; 31 - Vacuum pump; 32 - Fan;

[0045] 41-Magnetic impeller; 42-Magnetic source;

[0046] 50-Recombinant pressure assembly. Detailed Implementation

[0047] For ease of understanding, this section combines... Figure 1-2 The specific structure and operation of the present invention are further described below:

[0048] Environment and climate change are major challenges facing society today. Understanding the physical and chemical processes of the Earth's atmosphere and their interactions with solid and liquid aerosols, and exploring the formation and transformation mechanisms of atmospheric complex pollution and its interactions with meteorological factors, are fundamental to studying the ecological, health, and climate effects of air pollution and developing methods for predicting and forecasting regional severe weather and sudden environmental events.

[0049] The Environmental Optical Integrated Observation Field addresses the needs of atmospheric pollution prevention and control, climate change response, and ecological environment improvement. It comprises an integrated environmental and meteorological gradient observation tower, an experimental chamber system for atmospheric aerosol and cloud / fog interactions, and a comprehensive calibration and verification field integrating the entire spectrum of space and ground. This aims to enhance the research and comprehensive experimental capabilities for three-dimensional atmospheric environmental detection, encompassing temporal, spatial, radiometric, and spectral characteristics. Correspondingly, the experimental chamber system for verifying aerosol and cloud / fog interactions is a crucial component of the Environmental Optical Integrated Observation Field. Through this system, artificial simulation and control of the aerosol and cloud / fog environment can be achieved, enabling multiphase atmospheric (photochemical)chemical research on aerosols and cloud chemistry. Measuring parameters such as the optical thickness of aerosols and the effective radius of simulated cloud particles within the system also provides an effective spatial location for studying aerosol and cloud / fog interactions.

[0050] The solution of this invention is designed based on the above circumstances.

[0051] In actual operation, the specific implementation state of the present invention is as follows: Figure 1 As shown, it includes:

[0052] 1) Vacuum pumping assembly 30

[0053] Figure 1 In this process, the vacuum pumping assembly 30 consists of a vacuum pumping branch and an auxiliary air intake branch, and further includes a corresponding vacuum pump 31, a valve group, a vacuum gauge and a hose connected to the experimental chamber 10.

[0054] Vacuum pumping branch: Vacuum pump 31 is connected to experimental chamber 10 via a hose; the first regulating valve CV1 is installed between vacuum pump 31 and experimental chamber 10; the vacuum gauge is installed on the vacuum chamber interface inside the cavity of experimental chamber 10, i.e. Figure 1 The experimental chamber 10 shown is located in the lower right corner.

[0055] Auxiliary intake branch: consists of another hose and a second regulating valve CV2, connected to the external atmospheric environment.

[0056] 2) Temperature control component 20

[0057] It consists of a heating sub-module and a cooling sub-module.

[0058] The heating sub-module includes a high-temperature refrigerant storage tank 21, an expansion module 23, a first three-way valve TWV1, a main circuit pump 22, and an electric heating belt. The electric heating belt heats the high-temperature refrigerant by winding around the high-temperature refrigerant storage tank 21. The high-temperature refrigerant storage tank 21 is connected to the experimental chamber 10 via pipelines. The expansion module 23 is connected via pipelines to the inlet pipeline and the return pipeline connecting the high-temperature refrigerant storage tank 21 and the experimental chamber 10, respectively. The first three-way valve TWV1 and the main circuit pump 22 are connected to the high-temperature refrigerant storage tank 21 and the experimental chamber 10 via pipelines.

[0059] The cooling sub-module includes a cooling tower 24, a unit cooling pump 25, a low-temperature brine unit, a second three-way valve TWV2, ​​a low-temperature refrigerant storage tank 27, and a refrigerant pump 26. During operation, one end of the unit cooling pump 25 is connected to the cooling tower 24 to transport the refrigerant within the tower; the other end is connected to the low-temperature brine unit, which in turn is connected to the low-temperature refrigerant storage tank. The refrigerant pump 26 and the second three-way valve TWV2 are connected to the pipeline between the low-temperature brine unit and the low-temperature refrigerant storage tank 27. The low-temperature refrigerant storage tank 27 is connected to both the return pipeline and the inlet pipeline.

[0060] The first three-way valve TWV1 and the second three-way valve TWV2 need to be bypassed, that is, the side outlets should be arranged according to... Figure 1 The connection shown is used to achieve energy saving through recirculation and to reduce the system's cooling or heating input.

[0061] Based on the above, the present invention also includes an electronic control component, which automatically collects the corresponding signals of each sensor group according to the system process, and then turns on / off or adjusts the actions of each actuator; at the same time, it is also used to upload the system's operating status and various parameters to the host computer.

[0062] When working, refer to Figure 2As shown, the sensor group includes a first temperature and humidity sensor HT1, a second temperature and humidity sensor HT2, and a pressure sensor P1 arranged sequentially along the axial direction of the experimental chamber 10. The three sensors are evenly spaced, typically 1 meter apart. On a cross-section perpendicular to the axis of the experimental chamber 10, the first temperature and humidity sensor HT1, the second temperature and humidity sensor HT2, and the pressure sensor P1 are all located at a radius offset from the axis, used for monitoring the air temperature inside the experimental chamber 10 and for signal acquisition and feedback during the experiment. It also includes three or more sets of temperature and pressure sensors PT1 attached to the inner wall of the experimental chamber 10. Each temperature and pressure sensor PT1 is evenly distributed sequentially along the axial direction of the experimental chamber 10, typically 1 meter apart, used for monitoring the temperature of the inner wall of the experimental chamber 10 and for signal feedback during the experiment. Of course, it also includes a first temperature sensor T1 that is evenly distributed along the axial direction of the experimental chamber 10 and a second temperature sensor T2 that is evenly distributed along the radial direction of the cross section. At the same time, one set of the third temperature sensor T3 that measures the boundary layer temperature is arranged on the inner wall of the experimental chamber 10, and the other third temperature sensors T3 are arranged in a progressive manner along the radial direction of the experimental chamber 10. These three types of sensors are used to monitor the influence of the wall temperature on the change of air temperature inside the experimental chamber 10.

[0063] exist Figure 1 The invention also includes a stirring assembly in the structure shown. The stirring assembly is magnetically driven by a magnetic impeller 41 and a magnetic source 42, and the two are separated from each other by the bottom wall of the experimental chamber 10 to prevent contamination by mechanical oil or grease. The repressurization assembly 50 includes at least one automatic air valve and one manual air valve, which will not be described in detail here.

[0064] Reference Figure 1 As shown, the actual workflow of this invention is as follows:

[0065] A simulation method for an experimental chamber system for verifying the interaction between aerosols and clouds includes the following steps:

[0066] S1. Low-temperature environment simulation steps:

[0067] S1-1, The unit cooling pump 25 transports the air-cooled water in the cooling tower 24 to the low-temperature brine unit, thereby reducing the water temperature to -40 to +10℃ and -70 to -40℃.

[0068] S1-2, The low-temperature brine unit transports low-temperature water to the low-temperature refrigerant storage tank 27 for storage;

[0069] S1-3. The cryogenic coolant in the cryogenic coolant storage tank 27 is transported to the heat exchange layer 11 of the experimental chamber 10 through the main circuit pump 22 to reduce the temperature of the experimental chamber 10.

[0070] S1-4. By adjusting the flow rates of the high-temperature coolant in the high-temperature coolant storage tank 21 and the low-temperature coolant in the low-temperature coolant storage tank 27, the temperature of the coolant is changed, thereby adjusting the cooling rate of the experimental chamber 10.

[0071] S2. High-temperature environment simulation steps:

[0072] S2-1, The electric heating belt at the high-temperature refrigerant storage tank 21 is working to heat the high-temperature refrigerant inside;

[0073] S2-2, The high-temperature refrigerant expands and cools through the expansion module 23 to regulate the temperature of the high-temperature refrigerant;

[0074] S2-3, the main circuit pump 22 transports the high-temperature refrigerant that has reached the target temperature to the heat exchange layer 11 of the experimental chamber 10, so that the experimental chamber 10 can achieve the purpose of heating.

[0075] S3. Vacuum Environment Simulation Steps:

[0076] S3-1. Depending on the control pressure and pumping speed requirements of the experimental chamber 10, select to open the first regulating valve CV1 of the vacuum pump 31 to extract the gas inside the experimental chamber 10 at different rates.

[0077] S3-2. By monitoring the rate of temperature reduction of the gas inside the experimental chamber 10 through a vacuum gauge, and adjusting the pumping speed of the vacuum pump 31 or the opening of the first regulating valve CV1, the pumping rate is controlled to change the target vacuum level and thus control the rate of gas cooling inside the experimental chamber 10.

[0078] S3-3. Another means of adjusting the target vacuum level is to control the intake rate of the supplementary pipeline to reduce the target vacuum level.

[0079] S4. Simulation steps for a gas-solid mixed environment:

[0080] S4-1, The speed of the magnetic impeller 41 can be changed according to the change of the input power. The selected magnetic impeller 41 has the function of running smoothly in the environmental test chamber 10. The length of its mounting shaft can be customized as needed.

[0081] S4-2 and magnetic impeller 41 rotate inside the chamber, which can achieve the purpose of mixing between gaseous medium and solid particles in experimental chamber 10 and the uniformity of temperature inside the chamber.

[0082] S5. High-temperature cleaning step:

[0083] S5-1. Start vacuum pump 31 to pump air, so that the pressure inside experimental chamber 10 drops to below 104Pa; the electric heating belt at high temperature coolant storage tank 21 works to heat the high temperature coolant inside, so that the temperature of the high temperature coolant rises to between 60-80℃.

[0084] S5-2, the first three-way valve TWV1 is opened, and the main circuit pump 22 transports the high-temperature refrigerant to the heat exchange layer 11 of the experimental chamber 10. The temperature inside the experimental chamber 10 rises through the flow heat exchange method, thereby causing the impurity gas attached to the inside of the experimental chamber 10 to be desorbed and evaporated, and then pumped out of the chamber by the vacuum pumping assembly 30.

[0085] S6. High-temperature cleaning step:

[0086] S6-1. Turn on vacuum pump 31 to pump air and reduce the pressure inside the chamber to below 104 Pa.

[0087] S6-2. The electric heating element heats the high-temperature refrigerant in the high-temperature refrigerant storage tank 21, causing the refrigerant temperature to rise to between 60-80℃.

[0088] S6-3, the first three-way valve TWV1 is opened, and the main circuit pump 22 transports the high-temperature refrigerant to the heat exchange layer 11 of the experimental chamber 10, so that the temperature inside the experimental chamber 10 rises through flow heat exchange.

[0089] S6-4. After the temperature rises, the impurity gases attached to the experimental chamber 10, such as water vapor and organic solvents, are desorbed and evaporated, and then extracted to the outside of the chamber by the vacuum pumping component 30, thus achieving the purpose of cleaning the experimental chamber 10.

[0090] Of course, those skilled in the art will recognize that the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0091] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0092] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A cabin system for verifying the interaction between aerosols and clouds / fog, characterized in that: The experimental chamber (10) includes an outer wall with a heat exchange layer (11), a temperature control assembly (20) connected to the heat exchange layer (11), and a vacuum pumping assembly (30) connected to the inner cavity of the experimental chamber (10), wherein: The temperature control component (20) includes a heating sub-module, which includes a self-heating high-temperature refrigerant tank (21). The high-temperature refrigerant is discharged from the outlet of the high-temperature refrigerant tank (21), enters the inlet of the heat exchange layer (11) through the inlet pipe with the main loop pump (22), and flows back to the high-temperature refrigerant tank (21) through the return pipe connected to the outlet of the heat exchange layer. An expansion module (23) is also connected across the inlet pipe and the return pipe. The component (20) also includes a cooling sub-module, which includes a cooling tower (24). The medium at the cooling tower (24) is connected to the low-temperature refrigerant storage tank (27) after passing through the unit cooling pump (25), the low-temperature brine unit and the refrigerant pump (26) in sequence. The inlet of the low-temperature refrigerant storage tank (27) is connected to a section of return pipeline between the high-temperature refrigerant storage tank (21) and the main circuit pump (22), and the outlet of the low-temperature refrigerant storage tank (27) is connected to the inlet pipeline. The vacuum pumping assembly (30) includes a vacuum pump (31); along the pumping direction, the gas inside the experimental chamber (10) enters the inlet of the vacuum pump (31) sequentially through the fan (32) and the first regulating valve CV1; a gas supply pipeline is connected to a section of pipeline between the fan (32) and the vacuum pump (31), and a second regulating valve CV2 is arranged on the gas supply pipeline, so as to control the cooling rate of the gas inside the experimental chamber (10) by changing the target vacuum level; The temperature control assembly (20) also includes a first three-way valve TWV1 connected in series on the inlet pipe at the inlet of the main circuit pump (22), and the side outlet of the first three-way valve TWV1 is connected to the return pipe.

2. The aerosol-cloud interaction verification experimental chamber system according to claim 1, characterized in that: The low-temperature brine unit includes a first low-temperature brine unit (28a) with a temperature range of -40 to +10℃ and a second low-temperature brine unit (28b) with a temperature range of -70 to -40℃. The medium at the cooling tower (24) is drawn out by the unit cooling pump (25) and then divided into two branches connected to the low-temperature refrigerant storage tank (27). One branch is where the first low-temperature brine unit (28a) is located, and the other branch is connected in series with the second low-temperature brine unit (28b), the second three-way valve TWV2 and the refrigerant pump (26). The side outlet of the second three-way valve TWV2 is connected to the outlet of the first low-temperature brine unit (28a).

3. The aerosol-cloud interaction verification experimental chamber system according to claim 1 or 2, characterized in that: It also includes a stirring assembly, which includes a magnetic impeller (41) coaxially arranged in the inner cavity of the experimental chamber (10) and a magnetic source (42) arranged outside the experimental chamber (10). The magnetic force of the magnetic source (42) drives the magnetic impeller (41) located in the inner cavity of the experimental chamber (10) to rotate.

4. The aerosol-cloud interaction verification experimental chamber system according to claim 1 or 2, characterized in that: The system also includes a repressurization assembly (50) that connects to the interior of the experimental chamber (10), the repressurization assembly (50) including automatic and manual air valves connected in parallel.

5. An aerosol-cloud interaction verification experimental chamber system according to claim 1 or 2, characterized in that: The system also includes a sensor group arranged in the inner cavity of the experimental chamber (10). The temperature signal obtained by the sensor group is transmitted to the temperature transmitter, which then sends it to the PID control table. The PID control table analyzes the data and adjusts the working state of the temperature control component (20). The pressure signal obtained by the sensor group is converted into a readable standard voltage signal. This standard voltage signal is sent to the PID controller. After analysis and processing, the PID controller adjusts the pumping speed of the vacuum pump (31).

6. The aerosol-cloud interaction verification experimental chamber system according to claim 5, characterized in that: The sensor group includes a first temperature and humidity sensor HT1, a second temperature and humidity sensor HT2, and a pressure sensor P1 arranged sequentially along the axial direction of the experimental chamber (10), with equal spacing between them. On a cross-section perpendicular to the axis of the experimental chamber (10), the first temperature and humidity sensor HT1, the second temperature and humidity sensor HT2, and the pressure sensor P1 are all located at a radius 1 / 2 off the axis. It also includes three or more sets of temperature and pressure sensors PT1 attached to the inner wall of the experimental chamber (10), with each temperature and pressure sensor PT1 arranged sequentially along the axial direction of the experimental chamber (10). It also includes a first temperature sensor T1 arranged sequentially along the axial direction of the experimental chamber (10) and a second temperature sensor T2 arranged sequentially along the radial direction of the cross-section. One set of the third temperature sensor T3 for measuring the boundary layer temperature is arranged on the inner wall of the experimental chamber (10), and the other third temperature sensors T3 are arranged sequentially inward along the radial direction of the experimental chamber (10).

7. The aerosol-cloud interaction verification experimental chamber system according to claim 6, characterized in that: The internal volume of the experimental chamber (10) is not less than 8.5m³. 3 The temperature range of the experimental chamber (10) at 101325 Pa is -50 to +40℃.

8. A simulation method, wherein the simulation method applies the aerosol-cloud interaction verification experimental chamber system as described in claim 1, characterized in that... Includes the following steps: S1. Low-temperature environment simulation steps: S1-1, The unit cooling pump (25) transports the air-cooled water in the cooling tower (24) to the low-temperature brine unit, thereby reducing the water temperature to -40 to +10℃ and -70 to -40℃; S1-2, The low-temperature brine unit transports low-temperature water to the low-temperature refrigerant storage tank (27) for storage; S1-3, The low-temperature coolant in the low-temperature coolant storage tank (27) is transported to the heat exchange layer (11) of the experimental chamber (10) by the main loop pump (22) to reduce the temperature of the experimental chamber (10); S1-4. By adjusting the flow rate of the high-temperature coolant in the high-temperature coolant storage tank (21) and the low-temperature coolant in the low-temperature coolant storage tank (27), the temperature of the coolant is changed, thereby adjusting the cooling rate of the experimental chamber (10). S2. High-temperature environment simulation steps: S2-1, The electric heating belt at the high-temperature refrigerant storage tank (21) is working to heat the high-temperature refrigerant inside; S2-2, The high-temperature refrigerant expands and cools through the expansion module (23) to regulate the temperature of the high-temperature refrigerant; S2-3, the main circuit pump (22) transports the high-temperature refrigerant that has reached the target temperature to the heat exchange layer (11) of the experimental chamber (10), so that the experimental chamber (10) can achieve the purpose of heating. S3. Vacuum Environment Simulation Steps: S3-1. Depending on the control pressure and pumping speed requirements of the experimental chamber (10), select to open the first regulating valve CV1 of the vacuum pump (31) to extract the gas inside the experimental chamber (10) at different rates. S3-2. Monitor the rate of temperature decrease of the gas inside the experimental chamber (10) by using a vacuum gauge to monitor the inner cavity of the experimental chamber (10); or adjust the pumping speed of the vacuum pump (31) or the opening of the first regulating valve CV1 to achieve evacuation rate control and change the target vacuum level; or adjust the opening of the second regulating valve CV2 to reduce the target vacuum level; thereby achieving the purpose of controlling the rate of gas cooling inside the experimental chamber (10). S4. Simulation steps for a gas-solid mixed environment: The speed of the magnetic impeller (41) can vary according to the input power supply. The rotation of the magnetic impeller (41) achieves the mixing of gaseous medium and solid particles in the experimental chamber (10) and the uniformity of temperature in the chamber.

9. The simulation method according to claim 8, characterized in that: It also includes a high-temperature cleaning step, specifically including: S5-1. Turn on the vacuum pump (31) to evacuate the air, so that the pressure inside the experimental chamber (10) drops to below 104Pa; the electric heating belt at the high-temperature coolant storage tank (21) works to heat the high-temperature coolant inside, so that the temperature of the high-temperature coolant rises to between 60-80℃. S5-2, the first three-way valve TWV1 is opened, and the main circuit pump (22) transports the high-temperature coolant to the heat exchange layer (11) of the experimental chamber (10). The temperature of the inner cavity of the experimental chamber (10) rises through the flow heat exchange method, thereby causing the impurity gas attached to the inner cavity of the experimental chamber (10) to be desorbed and evaporated, and then pumped out of the chamber by the vacuum pumping assembly (30).

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