401 results about "Dewpoint temperature" patented technology

The invention discloses an electrical cabinet condensation defense method and system based on environmental parameter monitoring. The method comprises the following steps: acquiring temperature and humidity information of multiple points in an electrical cabinet and outside the cabinet in real time; calculating a dew point temperature and a condensation risk index in the cabinet; predicting the lowest temperature and humidity change rate in the cabinet in the next time period in the control period; based on the minimum temperature and humidity change rate prediction value in the cabinet and the current condensation risk index, whether the electrical cabinet meets the condensation risk trend criterion is judged, if yes, the electrical cabinet enters a condensation risk suppression linkage control mode, and if not, the electrical cabinet enters a condensation risk defense self-adaptive mode; and in the condensation risk suppression linkage control process, when the current condensation risk index of the electrical cabinet is lower than a condensation risk index threshold value, entering a condensation risk defense self-adaptive mode, and otherwise, entering a next control period. Data acquisition is comprehensive and accurate, the dew point temperature can be accurately calculated, the control strategy is intelligent and flexible, equipment can operate according to needs, condensation is effectively prevented, and the energy-saving effect is remarkable.

The invention provides an anti-condensation temperature and humidity regulation and control system and method for remote deep learning prediction aided decision making, and the method is characterized in that a field controller is connected with a temperature and humidity collection device, obtains the environment temperature and humidity, calculates the dew point temperature, obtains the surface temperature of a protected part, and starts and stops a heating and / or dehumidification device by comparing the difference between the two values with a preset threshold value; the temperature and humidity acquisition device acquires field environment temperature and humidity data for the field controller to calculate the dew point temperature, and the temperature and humidity acquisition device is also used for acquiring the surface temperature of the protected part; the heating device is used for raising environment temperature; the dehumidification device is used for reducing the environment humidity; the communication module is used for data transmission between the field controller and the remote prediction terminal, sending field data and receiving prediction information; the remote prediction terminal obtains field data through the communication module; an anti-condensation system structure combining local autonomous control and remote prediction assistance is established, and redundancy fault-tolerant capability is achieved; even if the remote prediction function fails, the field control can still operate independently and reliably.

According to the direct-expansion cryogenic pre-dehumidification and heat pump regeneration combined low-dew-point double-rotating-wheel dehumidification system, the control method and the terminal, accurate regulation and control of all devices in the rotating-wheel dehumidification system are achieved according to data collected by the sensor module in real time, and therefore the stability of the air supply dew-point temperature is ensured. By adopting the direct expansion cryogenic technology, the dehumidification burden of the rotating wheel is effectively relieved, and the regeneration temperature is reduced, so that the energy consumption in the regeneration process is remarkably reduced. The regeneration heat pump condenser is installed at the inlet of the rotating wheel, part of regeneration heat can be borne, and regeneration energy consumption is further reduced. A regeneration heat pump evaporator is further installed at an exhaust outlet of the rotating wheel, heat in regeneration exhaust can be recycled, and the purpose of saving energy is achieved. According to the rotating wheel dehumidification system, dual optimization of dehumidification performance and energy consumption performance is achieved, the dehumidification efficiency is remarkably improved, and the energy consumption of the system is reduced.

The invention discloses a tunnel dew formation and icing rapid monitoring method and system based on a space-time phase change cooperation mechanism, and relates to the technical field of tunnel engineering safety monitoring and freeze injury prevention and control. Establishing a tunnel geometric model and a heat-humidity-turbulence multi-field coupling physical model; synchronously acquiring heat and humidity physical property parameters and outdoor hourly meteorological parameters; taking the outdoor hourly meteorological parameters as Dirichlet boundary conditions and initial conditions of a heat-humidity-turbulence multi-field coupling physical model; determining a heat and humidity exchange coupling process of the tunnel wall surface and the internal environment, and defining heat and humidity transfer parameters under an unsteady state boundary; performing discretization processing on the tunnel geometric model by adopting a grid division strategy; by setting a dew point temperature threshold value and an icing temperature threshold value, a condensation risk area is judged, dynamic changes of the thickness of an ice layer are quantified, and monitoring of tunnel condensation and icing is achieved. The method can effectively reflect the distribution rule of multiple physical fields on the surface and in the tunnel in any time, accurately judge the risk area and quantify the thickness of the ice layer.

The invention relates to the technical field of grain depot ventilation prediction, and discloses a grain storage ventilation decision-making method based on GNN and Cross-Attention, and the method comprises the steps: collecting internal temperature and humidity data of a grain depot, external temperature and humidity data of the grain depot, weather data and grain pile temperature data in real time; and the collected grain pile temperature data and weather data are preprocessed respectively, the grain balance relative humidity, the atmosphere dew point temperature and the grain dew point temperature are calculated and serve as input of a pre-trained ventilation decision model, and a classification result of ventilation decisions is obtained. Based on the temperature and humidity information of the air in the grain depot, the ventilation of the grain depot is comprehensively decided by combining the external temperature and humidity of the grain depot, the dew point data, the weather data and other information, the temperature characteristics of the grain depot are more accurately extracted, and the ventilation decision of the grain depot is more reliable.

The invention relates to the technical field of electrical equipment state monitoring and fault early warning, and particularly discloses an electrical cabinet condensation risk online monitoring method and system, and the method comprises the steps: synchronously collecting the physical parameters of the same microscopic space point in an electrical cabinet; calculating the classical dew point temperature by adopting a Magnus formula; performing quantification processing on the air pressure micro-fluctuation data in the time window, and calculating information entropy of micro-air pressure fluctuation; the wall surface temperature gradient and the air flowing state are fused, and the equivalent dew point temperature is calculated; real-time safety margin is calculated, and the instantaneous change rate of the safety margin is solved; constructing a condensation risk trend index; comparing with a preset threshold value, generating an early warning signal and a risk diagnosis label, and completing condensation risk monitoring; the system comprises a multi-physical field sensing unit, an embedded processing unit, a self-adaptive control unit, a man-machine interaction unit and a communication unit which are integrated in the same shell.

The invention relates to the technical field of facility agriculture environment control, and discloses an anoectochilus formosanus growth environment temperature and humidity non-electrical variable adjustment method, which comprises the following steps: acquiring dry-bulb temperature and relative humidity, calculating real-time dew point temperature, and generating a dew point approximation index; when the dry-bulb temperature is higher than a set value to trigger cooling, monitoring the relationship between the index and a security defense threshold value; when the index is lower than a threshold value, the humidification starting permission is locked, and ventilation is driven; when the index is higher than a threshold value, locking is relieved, and humidification output is limited according to the dry-bulb temperature drop rate, so that the dew point rise rate is lower than the dry-bulb temperature drop rate. By establishing the dew point defense boundary and asynchronous decoupling control logic, the problem of transient condensation caused by response time constant mismatch in a multivariable coupling system is solved; the risk of microscopic condensation of leaf surfaces is eliminated, and high-precision lossless regulation and control of the anoectochilus formosanus growth environment are realized.

The invention discloses a mold cooling water supply, conveying and quantitative control method and system. The method comprises the following steps: acquiring an initial monitoring data set; according to the initial monitoring data set, if the partition temperature exceeds a preset threshold value, the flow of the corresponding cooling channel is increased, if the partition temperature is lower than the preset threshold value, the flow is reduced, and an optimized flow distribution scheme is generated; a dynamic adjusting module is adopted to conduct temperature parameter calibration on the optimized flow distribution scheme, if the regional temperature deviation is detected, the cooling medium supply amount is corrected, and a dynamic balance control instruction is generated; humidity and dew point temperature data are obtained from an environment monitoring system, if the difference value between the humidity and the dew point temperature is smaller than a safety threshold value, a condensation prevention mechanism is triggered, and a cooling medium temperature upper limit parameter is adjusted; and executing partition cooling control according to the final regulation and control parameters, and feeding back the operation data to a database for updating a preset threshold value and optimizing algorithm parameters. Intelligent and accurate control over the mold temperature is achieved, and the product quality and the production efficiency are improved.

The invention provides an air conditioner dehumidification power control method based on a constant dew point temperature and an air conditioner, and relates to the field of air conditioners, the air conditioner dehumidification power control method comprises the steps that a first dew point temperature difference between a first dew point temperature of a lithium battery workshop and a target dew point temperature is determined, and a standard regeneration temperature of a rotary dehumidifier is adjusted based on the first dew point temperature difference; when the return air humidity of the air conditioner is larger than or equal to the preset humidity threshold value, the air conditioner is controlled to be switched to a humidity closed-loop control mode, and the regeneration temperature of the rotary dehumidifier is reduced to be lower than the standard regeneration temperature; and the second dew point temperature of the lithium battery workshop is determined in the humidity closed-loop control mode, and the dehumidification power of the air conditioner is adjusted based on the second dew point temperature difference between the second dew point temperature and the target dew point temperature. And in the humidity closed-loop control mode, the dehumidification power of the air conditioner is dynamically adjusted according to the re-determined second dew-point temperature difference, and energy waste caused by excessive dehumidification is avoided on the premise that the dew-point temperature of the lithium battery workshop is kept stable.

The invention provides a dehumidification method of a heat management system, electronic equipment and a storage medium, and the method comprises the steps: obtaining the dew point temperature in a container, monitoring the water outlet temperature of a liquid cooling unit, and dehumidifying a battery pack when the dew point temperature is greater than or equal to the water outlet temperature. As the outlet water temperature is the lowest temperature of the liquid cooling plate of the liquid cooling unit, the accuracy and effectiveness of the judgment result of whether the dehumidification function needs to be started or not can be improved according to the lowest temperature, whether the condensation phenomenon can be generated or not can be accurately judged according to the dew point temperature, and when the dew point temperature is larger than or equal to the outlet water temperature, the battery pack is dehumidified, and the dehumidification efficiency is improved. Therefore, accurate dehumidification of the thermal management system is achieved, dehumidification energy consumption is reduced, the anti-condensation effect of the thermal management system is improved, the performance of a battery in the thermal management system is improved, and the service life of the battery in the thermal management system is prolonged.

The invention relates to the technical field of petrochemical corrosion failure and protection, and discloses a dew point corrosion high-risk area prediction method suitable for an atmospheric and vacuum distillation unit, and the method comprises the steps: firstly obtaining the technological characteristics of a to-be-tested device and the physical property data of processing raw oil; constructing a process calculation model of the to-be-tested device according to the process characteristics and the physical property data; solving logistics parameters in the device to be tested by using the process calculation model, and analyzing logistics distribution characteristics in the device; the material flow distribution characteristics comprise phase distribution characteristics, temperature distribution characteristics, component distribution characteristics and concentration distribution characteristics; calculating the dew point temperature in the device to be measured; and finally, determining a high-risk area in which low-temperature dew point corrosion occurs in the device to be detected in combination with the material flow distribution characteristics and the dew point temperature. According to the method, quick and accurate prediction of the corrosive components in the dew point corrosion high-risk area in the atmospheric and vacuum distillation unit is realized.

The invention relates to the technical field of refrigeration equipment state monitoring and data analysis, and discloses a freezer remote monitoring and fault prediction system, which comprises the steps of intercepting operation data of a freezer in a door closing silence period, calculating an environment dew point temperature sequence and extracting a unit temperature difference load fluctuation ratio sequence of a refrigeration system; based on the time change rate of the environment dew point temperature sequence and the unit temperature difference load fluctuation ratio sequence, an instantaneous cross bispectrum coupling potential energy sequence representing the nonlinear modulation relation of the time change rate and the unit temperature difference load fluctuation ratio sequence is constructed; then, a two-dimensional phase space hysteresis track is constructed with the environment dew point temperature sequence as the horizontal axis and the instantaneous cross bispectrum coupling potential energy sequence as the longitudinal axis, and the cross bispectrum hysteresis entropy of the dew point driving type load volatility is calculated based on the probability density distribution of the track and the directed circulation area; and finally, judging an operation state and outputting a fault prediction result by verifying whether the entropy value is within a historical reference interval.

This application belongs to the technical field of air compressor safety, and particularly relates to a safety operation method for a piston air compressor. A safety operation method for a piston air compressor includes the following steps: S1, a flexible baffle is provided on an air-cooled plate cooler connected to the piston air compressor; S2, temperature data of each cooling unit at the current moment is obtained, and at the same time, the temperature change trend and the opening area change trend of the air outlet end of each cooling unit are obtained; S3, according to the pressure dew point temperature of the air outlet end of each cooling unit at the current moment, the opening area of each cooling unit at the current moment is adjusted to change the coverage degree of the flexible baffle on the air-cooled flow channels of each cooling unit at the next moment, so that the temperature of the air outlet end of each cooling unit is always above the corresponding pressure dew point temperature. This application can尽量避免活塞式空压机在运行的过程中发生冰堵或油乳化,保证活塞式空压机的安全运行。 It should be noted that there is an unclear part in the original Chinese text "尽量避免活塞式空压机在运行的过程中发生冰堵或油乳化,保证活塞式空压机的安全运行。" which may need to be further clarified for a more accurate translation. The above translation is based on the best understanding of the current text.

The invention relates to the technical field of air conditioner control, and discloses a method for controlling a radiation air conditioner system, which comprises the following steps: obtaining dew point temperature of each room in a house where the radiation air conditioner system is located; comparing the dew point temperatures of all the rooms to determine a reference room with the lowest dew point temperature; determining a target control strategy of the radiation air conditioning system according to the dew point temperature of the reference room; and controlling the radiation air-conditioning system to execute the target control strategy. According to the scheme, the time for reaching the set temperature can be effectively shortened, the rapid cooling requirement of each room is met, the comfort degree of all the rooms in the refrigeration mode is ensured, and efficient and accurate water supply temperature control is achieved. The invention further discloses a device for controlling the radiation air conditioning system and the radiation air conditioning system.

The invention provides heat exchange equipment and a control method based on the heat exchange equipment, the heat exchange equipment comprises a shell, the shell is provided with a first end and a second end which deviate from each other, the first end faces a first space and is provided with a fresh air port and an exhaust port, and the second end faces a second space and is provided with an air supply port and an air return port; the detection device is configured to obtain the air inlet temperature of the fresh air opening; the control device is configured to calculate the dew point temperature of the second space in the state that the air inlet temperature is higher than the preset temperature; the detection device is further configured to obtain the air supply temperature of the air supply outlet, and the control device is further configured to compare the air supply temperature with the dew point temperature.

A method and system for preventing condensation of an ultrasonic liquid level meter. The method comprises: connecting a heat tracing unit to an ultrasonic liquid level meter, and deploying a temperature monitoring module; on the basis of a measurement result of the monitoring module, calculating the dew point of the surface of a probe of the ultrasonic liquid level meter; and comparing the dew point with the surface temperature of the liquid level meter measured by the monitoring module and, on the basis of a heating control execution module, performing dynamic temperature control. By means of deploying the heating unit and the temperature monitoring module, the present invention measures the surface temperature of the probe in real time and, on the basis of the calculated dew point, dynamically adjusts heating power, such that the surface temperature of the probe is higher than the dew point temperature, thus effectively avoiding condensation and solving the effect of environment temperature and humidity on the precision of liquid level measurement.

The invention relates to the technical field of heat pump control, and discloses a defrosting method and device of a heat pump system and the heat pump system.The defrosting method comprises the steps that the temperature and humidity of gaps of a fin type heat exchanger are monitored in real time; and when the temperature is lower than or equal to the threshold value of the dynamic dew point temperature plus the safety margin and the humidity is higher than or equal to the threshold value, it is judged that the frosting prevention condition is met, the gap temperature is increased by adjusting the refrigerant bypass valve, the gap humidity is reduced by adjusting the airflow adjusting valve, and therefore frosting is actively prevented. And if the frost layer appears, short-time refrigeration interruption or low-power heating is started for defrosting according to the thickness of the frost layer or a pressure difference signal. And the formed ice layer is forcibly removed by switching the flow direction of the refrigerant and heating. By means of three-level linkage control, accurate defrosting in the whole process from prevention to removal is achieved, energy waste is effectively avoided, the defrosting efficiency and operation stability of the system are improved, and the user experience is improved.

The invention discloses a method for predicting surface condensation of airborne equipment of an amphibious aircraft. The method comprises the following steps: (1) calculating absolute humidity in electrical equipment; (2) calculating saturated vapor pressure in the electrical equipment; (3) calculating the highest humidity in the electrical equipment; (4) calculating the relative humidity in the electrical equipment; and (5) calculating the dew point temperature. The method for predicting the condensation on the surface of the airborne equipment of the amphibious aircraft can be used for evaluating the influence of the corrosion environment on the condensation on the surface of the airborne equipment of the aircraft.

The invention relates to the technical field of safety operation and maintenance of power equipment, in particular to an active anti-condensation control method, system and equipment for a switch cabinet and a medium, which are applied to an active anti-condensation control system for the switch cabinet and used for preprocessing operation environment data of the switch cabinet acquired by a sensing layer based on a data acquisition unit; cabinet body surface temperature fusion and dew point temperature calculation are carried out based on the risk research and judgment unit, a dynamic condensation risk index and a global risk index are obtained, and a risk level is judged through the obtained dynamic condensation risk index and a preset threshold value; and according to the risk level and the global risk index, based on a cooperative control unit and according to a preset multi-mode control strategy, generating a control instruction to perform active condensation prevention of the switch cabinet. Therefore, the early condensation trend is pre-judged, and faults such as insulation reduction and metal corrosion caused by condensation formation are effectively avoided.

The invention discloses an intelligent optimized variable water temperature anti-condensation control method for a radiant cooling system, and relates to the technical field of radiant cooling system control. According to the intelligently-optimized variable-water-temperature anti-condensation control method for the radiant cooling system, through multi-parameter comprehensive monitoring and an intelligent prediction model, the condensation risk can be predicted in advance and adjusted, the response speed is high, the hysteresis of an existing algorithm is avoided, the condensation phenomenon is effectively prevented, a partition control strategy and a dynamic feedback adjustment mechanism are combined, and the control accuracy is high. System parameters can be accurately adjusted according to different areas and real-time conditions, the control precision is high, it is ensured that the radiation surface temperature is always higher than the dew point temperature, the reliability and comfort of the system are improved, the dehumidification system is cooperated to reduce the condensation risk, meaningless operation of dehumidification equipment is reduced, and the overall energy efficiency of the system is improved; the system has a good energy-saving effect, is suitable for various types of radiant cooling systems, and has wide popularization and application values.

The invention provides a vehicle window defogging method and system, a vehicle and electronic device.The method comprises the steps that historical multi-source state parameters and environmental parameters of the vehicle, the first temperature of current vehicle window glass and the first dew point temperature of air in a passenger compartment are obtained; the multi-source state parameters and the environment parameters are input into a model, a first temperature sequence and a humidity sequence of air in a future passenger compartment and a temperature sequence of window glass are obtained, and the model is constructed based on physical simulation and data driving fusion; according to the first temperature sequence and the humidity sequence, a dew point temperature sequence of future passenger compartment air is determined; and according to the first temperature, the second temperature sequence, the first dew point temperature and the change rate of the safe temperature margin, the minimum safe temperature margin and the future safe temperature margin determined by the dew point temperature sequence, the start-stop state and the demisting strength of the demisting function of the air conditioner are determined. Automatic demisting of the car window is achieved through the data-physical fusion temperature and humidity prediction model, and the accuracy and reliability of demisting judgment in the complex environment are improved.

Disclosed in the present application are a monitoring method for an energy storage apparatus, and an electric apparatus and an energy storage apparatus. The energy storage apparatus comprises a housing, an energy storage unit group, and a temperature and humidity sensor, wherein the energy storage unit group and the temperature and humidity sensor are arranged inside the housing. The monitoring method comprises: measuring a real-time temperature and a real-time humidity inside a housing by means of a temperature and humidity sensor; determining a dew point temperature matching the real-time humidity, and comparing the real-time temperature with the dew point temperature, so as to obtain a comparison result; and executing a processing policy matching the comparison result. By means of the method, the present application can monitor the environment inside an energy storage apparatus in real time, and can perform corresponding processing on the environment inside the energy storage apparatus, thereby more effectively maintaining the operation and usage of the energy storage apparatus during the process of using the energy storage apparatus.

The invention provides an air conditioner anti-condensation control method and an air conditioner. The method comprises the steps that the absolute moisture content D and the dew point temperature Td of air are calculated according to the outdoor unit environment temperature Ta and the outdoor unit environment relative humidity phi so as to judge whether anti-condensation starting conditions are met or not, and when the anti-condensation starting conditions are met, the initial energy requirement Q of a compressor is determined according to the shutdown interval time m; the target parameters are periodically refreshed; the compressor refrigerating capacity q is obtained based on the target parameters, the actual dehumidification capacity Dx is determined based on the compressor refrigerating capacity q, and the dynamic dew point temperature Tdn is obtained according to the actual dehumidification capacity Dx; and updating the real-time compressor energy demand Qn and the anti-condensation operation time Hn based on the dynamic dew point temperature Tdn so as to adjust the rotating speed of the compressor. Under the condition that the indoor unit and the outdoor unit do not communicate with each other, the outdoor unit can perform fuzzy control to perform anti-condensation protection; and refrigeration load output adjustment can be carried out in real time according to different humidity, and it is guaranteed that condensation is avoided and rapid cooling can be achieved.

The invention provides an anti-condensation control method of an energy storage cabinet, a medium and a system. According to the method, the liquid supply high-temperature abnormal temperature and the initial liquid supply set temperature of a liquid cooling unit of the energy storage cabinet are obtained, the air dew point temperature at the current moment is obtained, the first dew point temperature is obtained, and finally the final liquid supply set temperature is determined according to the liquid supply high-temperature abnormal temperature, the initial liquid supply set temperature and the first dew point temperature. Therefore, compared with an existing scheme, the liquid cooling unit has the advantages that the amount of condensation water generated by the liquid cooling plate in the battery compartment of the liquid cooling unit is reduced, and the problem that the amount of condensation water generated by the liquid cooling plate in the battery compartment of the liquid cooling unit cannot be reduced in the existing scheme is solved; therefore, the safe operation of the battery compartment is influenced.

The invention discloses a free embedded refrigerator condensation prevention control method and system, a refrigerator and a medium. The free embedded refrigerator condensation prevention control method comprises the steps that a temperature sensor, a humidity sensor and a condensation prevention pipe temperature sensor are arranged in the refrigerator in advance; an anti-dew pipe temperature sensor is controlled to obtain the surface temperature of an anti-dew pipe around a freezing chamber, the temperature sensor is controlled to obtain the temperature of the environment where the refrigerator is located, and a humidity sensor is controlled to obtain the humidity of the environment where the refrigerator is located; according to the temperature and humidity of the environment where the refrigerator is located, the condensation point temperature is automatically calculated; comparing the obtained surface temperature of the anti-dew pipe around the freezing chamber with the condensation point temperature to obtain the temperature difference between the beam surface temperature and the condensation point temperature; and according to the surface temperature of the anti-dew pipe on the periphery of the freezing chamber and the temperature difference, the duty ratio of a condensation fan of the refrigerator is controlled. The problem of condensation outside the refrigerator in severe environments such as high temperature and high humidity and medium temperature and high humidity is solved, and convenience is provided for use of a user.

The invention discloses a control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product, and the method comprises the steps that in the refrigeration operation process of the air conditioner, whether the current environment is in a temperature and humidity state needing preferential dehumidification or not is determined according to the indoor environment temperature and the indoor relative humidity; if it is determined that the current environment is in the temperature and humidity state needing preferential dehumidification, the frequency of a compressor and the rotating speed of an inner fan are adjusted, and the air conditioner executes dehumidification operation; after the dehumidification operation is completed, the environment dew point temperature is calculated based on the indoor environment temperature and the indoor relative humidity; dynamically adjusting the running frequency of the compressor and the rotating speed of the inner fan according to the environment dew-point temperature and the evaporator surface temperature to enable the evaporator surface temperature to be higher than the environment dew-point temperature. According to the scheme, the anti-condensation response speed is increased, the control precision and the environmental adaptability are improved, and the balance of efficient dehumidification and stable anti-condensation is achieved.

To provide an air conditioning system capable of stably controlling the dew point in a low dew point room even when only fresh outside air is passed through a dehumidification rotor. An air conditioning system 1 calculates a set dew point temperature SP for a first dew point temperature 11 indicating the dew point temperature of dehumidified air based on a change in at least a second dew point temperature 22 indicating the dew point temperature inside a room. Then, the air conditioning system 1 executes at least one of control of the rotation speed of a dehumidification rotor 101, temperature adjustment control of a regenerative heater 121, and air volume adjustment control of fans (a first fan 112, a second fan 124) so ​​that the first dew point temperature 11 follows the set dew point temperature SP.

A multi-stage cooling system includes a pressure-resistant container and a parallel-mode cooling device that is at least partially arranged in the pressure-resistant container. The pressure-resistant container can store a dry gas therein that has a dew point temperature being less than −10° C. and that has a pressure being greater than 1 atm. The parallel-mode cooling device includes two heat exchangers immersed in the dry gas. The two heat exchangers respectively have a first cooling critical value and a second cooling critical value that is less than the first cooling critical value. The parallel-mode cooling device is configured to reduce a temperature of the dry gas to the first cooling critical value through one of the two heat exchangers having a lower operation power, and then further to reduce the temperature of the dry gas through another one of the two heat exchangers having a higher operation power.

The invention discloses a method and system for controlling air dryness and humidity in a tobacco leaf sealing stack, and relates to the technical field of air dryness and humidity control in the tobacco leaf sealing stack, and the method comprises the steps: measuring and recording initial environment parameters of a target tobacco leaf sealing stack, obtaining initial temperature, relative humidity and dew point temperature data, and marking the initial temperature, relative humidity and dew point temperature data as environment data; based on the initial environment data, a multi-layer sealing structure optimization and humidity buffer layer setting method is adopted to carry out optimization design on the sealing performance of the tobacco leaf sealing stack, and a sealing stack structure is obtained; based on the environment data, the temperature and the humidity in the sealed stack are adjusted by adopting a humidity dynamic regulation and control method, an optimal temperature and humidity adjustment scheme is calculated by utilizing an AI prediction model, and an adjusted temperature and humidity environment is obtained; and based on the adjusted temperature and humidity environment, dynamically adjusting the ventilation quantity or the heating power in the sealed stack by adopting a dew-point temperature compensation mechanism method to obtain a stable dew-point temperature environment.

The invention discloses an air conditioner condensation prevention control method, device and system and an air conditioner, and belongs to the field of air conditioner condensation prevention. The air conditioner anti-condensation control method comprises the steps that after target parameters are obtained, a target threshold value is obtained through calculation based on the target parameters; and when the temperature difference value of the evaporator surface temperature and the dew point temperature is smaller than the target threshold value, anti-condensation control is conducted. According to the scheme, the threshold value is dynamically determined based on the indoor air humidity and the operation frequency of the compressor, and the threshold value is substantially the allowable minimum temperature difference safety boundary between the evaporator surface temperature and the dew point temperature. When it is monitored that the actual temperature difference between the two is lower than the dynamic threshold value, the controller automatically starts an anti-condensation measure; condensation can be prevented in time, condensation and water dripping of the indoor unit are prevented, the comfort level of a user can be guaranteed as much as possible, and the user experience is improved.