228 results about "Wet-bulb temperature" patented technology

The invention discloses an intelligent air conditioner water chilling unit control method and system based on predictive optimization. Operation data and weather forecast data are collected to establish a dynamic response reference, building cold load sudden change opportunity is recognized, the mismatching relation between magnetic suspension frequency and wet bulb temperature is detected, and energy-saving opportunity recognition data is generated to determine a cooling starting judgment table; identifying equipment response delay characteristics by using a dynamic response reference, extracting time sequence advantage parameters to determine dislocation configuration among multiple pieces of equipment, and generating coordination control parameters; cloud-local transmission delay analysis is carried out according to the coordination control parameters, and a coordination control sequence is generated through buffer opportunity identification and delay compensation; mechanical refrigeration suppression data is generated through energy efficiency mode classification, free cooling potential mining is implemented to form a cold source optimization factor, and an emergency response strategy is generated; an emergency response strategy is used to identify a multi-device linkage trigger critical zone, a prediction correction feedback network is constructed, a global collaborative optimization instruction is generated, and the system operation efficiency and the control precision are improved.

The invention discloses an air conditioner efficiency test system and a control method of an air conditioner efficiency test platform. The method comprises the following steps: dynamically adjusting the air dry bulb / wet bulb temperature of a test room of an existing test bed based on a dynamic temperature control adjusting technology; acquiring a real-time building thermal load of the test room through a building thermal load prediction simulator; the dynamic change of the air dry-bulb temperature of the test room is calculated in real time through the indoor air dry-bulb temperature prediction simulator; and the dynamic change of the air wet bulb temperature of the test room is calculated in real time through the indoor air wet bulb temperature prediction simulator. According to the invention, the problem that the dynamic operation energy efficiency and performance parameters of the tested air conditioner cannot be obtained through the enthalpy difference method test bench because the existing enthalpy difference method test bench cannot control the dynamic change process of the building thermal load of the test room along with the refrigeration / heating capability of the tested air conditioner in the prior art is solved; and the actual operation performance level of the air conditioner cannot be reflected.

The invention provides a cooling tower optimization control method and device of a central air-conditioning system, a terminal and a medium. The method comprises the steps that the wet bulb approximation degree of a cooling tower and the comprehensive energy efficiency of the central air-conditioning system in the current environment are obtained; according to the wet bulb approximation degree, determining a corresponding to-be-optimized control strategy of the cooling tower when the power consumption value of the cooling tower is the lowest; and the control strategy to be optimized is optimized by adjusting the modulation coefficient of the cooling tower model and the interaction information of the cooling tower and the adjacent cooling tower, and the optimized control strategy is executed so that the comprehensive energy efficiency of the central air conditioning system at the current moment can be maintained to be larger than or equal to the comprehensive energy efficiency at the previous moment. The wet bulb approximation degree is calculated by considering the influence of the air relative humidity, the wind speed synergistic effect and the dynamic change of the cooling tower load rate on the wet bulb temperature, the control strategy is determined, and the control strategy is further optimized and executed by modulating the interaction information of the cooling tower model and the parallel cooling towers. Therefore, the comprehensive energy efficiency of the central air-conditioning system is improved and maintained.

The invention discloses a baking method suitable for upper leaves of a flue-cured tobacco variety K326. The method comprises the following steps: S1, harvesting upper leaves of mature tobacco plants and loading them into a tobacco loading chamber of a flue-curing barn; and S2, baking the loaded upper leaves, wherein the baking comprises an early yellowing stage, a middle yellowing stage, a late yellowing stage, an early color fixation stage, a middle color fixation stage, a late color fixation stage, and a tendon drying stage. The dry-bulb temperature steadily increases in the seven stages of the early yellowing stage, the middle yellowing stage, the late yellowing stage, the early color fixation stage, the middle color fixation stage, the late color fixation stage, and the tendon drying stage. The wet-bulb temperature exhibits a "V"-shaped change in the five stages of the middle yellowing stage, the late yellowing stage, the early color fixation stage, the middle color fixation stage, and the late color fixation stage. In the middle yellowing stage and the late yellowing stage, the dry-bulb temperature remains unchanged, showing "double 39-40°C and double 41-42°C", respectively, while the wet-bulb temperature decreases by 0.5-1°C in the latter stage of each stage. The method bakes the upper leaves, significantly reducing the ash content and proportion of the upper leaves, increasing the hue of the tobacco leaves, and improving the proportion of tobacco leaf grades, thereby significantly improving the baking quality of the upper leaves and the income of tobacco farmers.

The invention provides a data center cascade refrigeration system control method and device, and the method comprises the steps: obtaining an outdoor wet bulb temperature to determine a first target temperature, obtaining an indoor return air temperature to determine a second target temperature, and calculating the temperature difference between the first target temperature and the second target temperature; the data center cascade refrigeration system is controlled to enter a first refrigeration mode, a second refrigeration mode or a third refrigeration mode according to preset conditions, and only the chilled water refrigeration system is started in the first refrigeration mode; in the second refrigeration mode, the chilled water refrigeration system and the evaporation cold and heat pipe refrigeration system are started at the same time; and in the third refrigeration mode, only the evaporation cold and heat pipe refrigeration system is started. In different modes, the system optimizes the refrigeration effect by adjusting the compressor frequency, the water pump frequency, the water supply valve opening, the fan frequency, the fluorine pump frequency, the expansion valve opening and other parameters, and the problems that in an existing refrigeration system in the prior art, the water side natural cooling time is short due to the fact that the temperature difference between the air side and the water side is inconsistent are solved. And more energy is consumed to meet the refrigeration requirement.

The present invention discloses a flue-curing method for reducing ash on upper tobacco leaves. The method shortens the yellowing time at or before 38°C, maintains the same dry-bulb and wet-bulb temperatures at 40°C, stops the circulating fan, reduces the temperature and humidity difference between different tobacco layers in the flue-curing barn, then lowers the wet-bulb temperature. This process is repeated to cause the tobacco leaves to soften, wilt, and turn yellow. The dry-bulb temperature is then raised to 44°C, causing the main ribs to soften. The high temperature is then returned to 42°C, and the wet-bulb temperature is lowered by 1-2°C at 42°C to control the water loss of the tobacco leaves to 40-45%, inhibiting the activity of polyphenol oxidase and promoting yellowing. The dry-bulb and wet-bulb temperatures are then lowered by 1-2°C at the initial color setting stage, slowing the heating rate. A medium temperature, medium humidity, and slow heating are used for color setting in the middle color setting stage. The temperature is then slowly increased in the later color setting stage. The flue-curing time at a steady temperature of 54°C is extended to increase the water loss and dryness of the tobacco leaves. The wet-bulb temperature is increased during the dry rib drying stage. This method can significantly reduce the occurrence of ash on tobacco leaves and improve the appearance quality of the upper tobacco leaves after curing.

The invention provides a heat pump unit, an air conditioner and a control method. When the heat pump unit is in a refrigeration mode, the outdoor wet-bulb temperature is larger than or equal to a wet-bulb temperature threshold value, and the outdoor dry-bulb temperature is larger than a dry-bulb temperature threshold value, the series flow path and the first bypass flow path are both in a conducting state. In other words, part of the refrigerant is adopted for heat exchange through a series flow path which is formed by connecting the air-cooled condenser in series and then connecting the evaporation cold condenser in series, and the other part of the refrigerant is synchronously adopted to cross the air-cooled condenser and directly enter the evaporation cold condenser for heat exchange, so that the evaporation cold condenser can participate in heat exchange more sufficiently; the energy efficiency of the whole heat pump unit is improved, and the refrigeration use experience of a user is improved.

The invention relates to a calculation method for concentration ratios of rainfall in different forms, and the method comprises the steps: obtaining meteorological data and elevation data of a to-be-measured time period of a research region, and generating a wet bulb temperature and a threshold temperature according to the meteorological data and the elevation data; wherein the threshold temperature comprises a critical high temperature and a critical low temperature; performing temperature judgment on the wet bulb temperature based on the threshold temperature, acquiring different rainfall types of the research area, and acquiring rainfall amounts of different types of rainfall in combination with rainfall data; calculating the cumulative rainfall days and the cumulative rainfall amount of different types of rainfall through the rainfall amount, calculating the concentration ratio of different rainfall types by using the regression coefficient, and further calculating the concentration ratio and the rainfall concentration period of the rainfall in the region by combining the vector azimuth angle. The method can solve the problem that the spatial and temporal distribution of the concentration ratio of different rainfall types cannot be effectively quantified, and makes up for the defect that the existing index cannot accurately reflect the change of different rainfall types and the influence of the concentration degree on regional water resource management and weather prediction.

The invention discloses a precipitation phase fusion analysis algorithm based on diagnostic analysis and observation data of a ground weather phenomenon instrument. The precipitation phase fusion analysis algorithm comprises the following steps: step P1, collecting and preprocessing real-time data of a three-dimensional atmospheric grid; p2, rainfall weather phenomenon information is extracted through ground observation data; step P3, calculating the wet bulb temperature of the ground station through the ground observation data; step P4, background field information is provided for a diagnosis and analysis method for precipitation phase identification through three-dimensional and ground meteorological grid live data; and P5, correcting and fusing background field information of precipitation phase state analysis by using ground observation data. According to the method, the influence of meteorological element information such as high-resolution and high-precision temperature, pressure and humidity of the ground and local topography is fully considered, observation information is introduced, and correction fusion is carried out according to the physical constraint relation between the observed temperature and humidity conditions of the surrounding stations of the analysis grid and the real rainfall phase state; and the identification accuracy of the snow phase state is obviously improved compared with that of a rainfall phase state business product of the China Meteorological Administration.

An adiabatic system and method for reducing water and energy use is provided. The system comprises an adiabatic heat rejection system including a temperature sensor configured to measure the ambient wet-bulb temperature of the adiabatic system based on a measured temperature of water exiting a wetted media pad. A method for adjusting the operational parameters of the system to minimize water and energy use is provided. The method comprises the steps of determining an approximate ambient wet-bulb temperature of the adiabatic heat rejection system based on a measured temperature of water leaving the adiabatic pad, determining if a measured temperature of a process fluid stream is above a process fluid temperature setpoint, determining if the adiabatic heat rejection system is in a water conservation mode of operation or an energy savings mode of operation, and adjusting one or more operational parameters based on the mode of operation.

The invention relates to a water chilling unit group control method and system based on an ESC. The method comprises the steps that meteorological parameters, air conditioner area equipment heat dissipation, personnel loads and the like are obtained in real time for load prediction; establishing a water chilling unit energy efficiency model based on the mechanism; a model self-updating device is designed, operation data can be processed and stored, the characteristics can be changed due to aging and other reasons when a host operates for a period of time, a model updating strategy verifies the model precision according to the actual operation data, and model parameters are corrected if the deviation is too large; the group control strategy establishes an objective function and constraint conditions, collects cooling water parameters, outdoor environment wet bulb temperature and other parameters based on a load prediction result, performs optimization through an escape optimization algorithm ESC, and outputs the number of on-off hosts, the load rate of each host and the like.

The present invention discloses a method for baking tobacco leaves on the upper part of a white eel mud tobacco field. The method comprises the following steps: spraying a nutrient solution on the leaves before harvesting, appropriately reducing the maturity of tobacco leaves during harvesting, appropriately reducing the amount of tobacco leaves to be woven, reducing the density of tobacco leaves to be loaded on a kang, adopting a baking technology of high temperature main yellowing, early dehumidification in the later stage of yellowing, and gradually reducing the wet-bulb temperature during baking, reducing the yellowing degree of tobacco leaves during switching to another fire, adopting a low temperature, low humidity, slow temperature rise baking technology for color fixing during the color fixing period, gradually increasing the wet-bulb temperature in the early stage of color fixing, and adopting a fast drying baking technology in the dry-stem period. By adopting the method for baking tobacco leaves on the upper part of a white eel mud tobacco field, the difficulty of color fixing of the upper tobacco leaves can be effectively reduced, the ash on the upper tobacco leaves can be reduced, and the appearance quality and intrinsic quality of the tobacco leaves after baking can be improved.

The invention relates to the field of energy-saving optimization of data analysis, in particular to a building energy-saving optimization method and system based on big data analysis, and the method comprises the steps: obtaining the operation data of a cooling water system and a chilled water system, and generating a standardized time series data set in combination with the environment wet bulb temperature; a final evaporation temperature prediction value and a final condensation pressure prediction value are obtained through long-short-term memory network analysis, data analysis is conducted on the final evaporation temperature prediction value and the final condensation pressure prediction value and preset hard constraint conditions, and if the final evaporation temperature prediction value and the final condensation pressure prediction value both meet the preset hard constraint conditions, a comprehensive energy efficiency value is obtained through energy efficiency analysis calculation; iteratively solving a minimum comprehensive energy efficiency value meeting a hard constraint condition through an interior point method, outputting the frequencies of the corresponding cooling water pump and freezing pump as an optimal frequency instruction sequence, and sending the optimal frequency instruction sequence to a variable frequency controller; cooperative analysis of a cooling water system and a chilled water system can be effectively enhanced, the dynamic coupling relation between parameters is comprehensively considered, and the overall energy efficiency is improved.

The invention relates to the technical field of household appliance testing, and discloses a dryer testing system which comprises a tested device and a circulating air supply unit, the circulating air supply unit comprises an air duct, and the two ends of the air duct are detachably matched with an air outlet and an air inlet of the tested device respectively, so that a closed loop for airflow circulation testing is formed. An airflow processing module and a detection module are arranged in the air duct, the airflow processing module is used for adjusting the temperature, humidity and air pressure of flowing airflow, and the detection module is used for obtaining dry and wet bulb temperature and air speed parameters of the airflow at the air outlet and the air inlet, so that the drying speed and efficiency of the tested equipment are measured through an enthalpy difference method. According to the system, waste heat carried by exhausted gas is recycled firstly, brand new air does not need to be heated from the room temperature state, and therefore energy consumption in the testing process is remarkably reduced.

The invention discloses an air treatment system applying ultrasonic humidification and a control method thereof, and the air treatment system comprises a suction electric heater and a blow-out electric heater which are used for heating return air; the evaporator is used for refrigerating and dehumidifying return air; the fan is used for driving return air; the ultrasonic humidifier is used for vaporizing water molecules to generate water vapor to humidify return air; the electric humidifying equipment is used for humidifying the return air through steam generated by electric heating; return air is heated through the suction electric heater and the blow-out electric heater under the driving of the fan, is refrigerated and dehumidified through the evaporator, and is humidified through the electric humidifying equipment or the ultrasonic humidifier, so that supplied air with dry and wet bulb temperature meeting the test requirement is blown into the environment test room. Reasonable utilization of ultrasonic humidification and electric humidification of the air-conditioning laboratory can be achieved, the reliability of the ultrasonic humidification using process is improved, and the operation energy consumption of the air-conditioning laboratory is reduced.

The invention discloses a method and a system for determining control parameters of a cooling tower based on big data deep learning, and relates to the technical field of energy consumption control. The method comprises the following steps: periodically obtaining an environment data set; wherein the environment data set comprises data center load, outdoor wet bulb temperature and cooling tower water inlet temperature. And the first refrigerating capacity needed by the data center is predicted based on the data center load. And on the basis of the first refrigerating capacity, the outdoor wet bulb temperature and the cooling tower water inlet temperature, the cooling tower fan frequencies needed by different starting number of the cooling tower fans are determined when the cooling tower refrigerating capacity is the first refrigerating capacity, and the starting number of the cooling tower fans and the cooling tower power corresponding to the cooling tower fan frequencies are determined. And finally, when the power of the cooling tower is the lowest, the number of started cooling tower fans and the frequency of the cooling tower fans serve as the control parameters of the cooling tower, the control parameters of the cooling tower are accurately determined, and the flexibility of determining the control parameters of the cooling tower is guaranteed.

The invention discloses a high-temperature heat wave pre-identification method based on a temperature and humidity composite index, and the method comprises the following steps: (1), downloading and extracting daily maximum temperature and daily relative humidity data in summer every year through an open source website, calculating an average value of wet bulb temperature, and setting a threshold value according to different degrees of influences on a human body; (2) screening lattice points exceeding a threshold value, performing zoning analysis on areas exceeding the threshold value, and screening spatial regional character lattice points; (3) judging the continuity of the temperature and humidity composite high-temperature heat wave event; (4) calculating the comprehensive indexes of the events, and evaluating the early warning state of the temperature and humidity compound high-temperature heat wave events according to the sequence of the comprehensive indexes of the events over the years; according to the invention, the influence of high-temperature heat waves is evaluated efficiently, accurately and comprehensively.

The invention discloses a cultivation and baking process of a flue-cured tobacco variety GZ37. The cultivation and baking process comprises the following steps: S1, field cultivation; s2, baking process; a traditional low-temperature slow yellowing process is improved, a'medium-temperature medium-humidity 'baking process is adopted, a baking stage is added after ignition in the yellowing stage, the dry-bulb temperature is controlled to be 33 DEG C, the wet-bulb temperature is controlled to be 32 DEG C, and stable-temperature baking is conducted for 3 h to preheat tobacco leaves; according to the method, the tobacco leaves are baked for 20-24 hours at the temperature of 38 DEG C at the yellowing stage and the wet bulb temperature of 36 DEG C until 80% of the tobacco leaves are 80% yellow, the enzyme activity is improved in the yellowing stage, chemical components are promoted to be converted to be beneficial to the quality direction and the color is yellowed, the proportion of green tobacco is effectively reduced, and the problems that in current GZ37 baking, orange yellow is light, and more green tendons and brown exist are solved.

The invention discloses a concrete stirring refrigeration energy efficiency optimization control method and system, and relates to the field of stirring refrigeration control, and the method comprises the steps: firstly, carrying out the thermodynamic analysis of the environment temperature and humidity and the real-time load of a water chilling unit, and determining a cooling water temperature dynamic search space with the environment wet bulb temperature as the lower limit; on the basis, estimated power consumption of a cooling tower fan and a water chilling unit compressor at different cooling water temperature points is simulated by utilizing a dual-equipment energy consumption response prediction model, and a golden temperature point capable of enabling the total power consumption of the system to reach the minimum is positioned through global optimization. And finally, with the global optimal set temperature value as a target, the frequency of the fan is adjusted through PID control. According to the scheme, island type control logic is broken through, environmental potential and equipment characteristics are deeply fused, the energy consumption game relationship between the fan and the compressor is balanced in real time, and it is ensured that the refrigerating system always keeps the optimal comprehensive energy efficiency of the whole system under changeable climates and loads.

The invention provides an electrical equipment heating and dehumidification control method and a control terminal. The electrical equipment heating and dehumidification control method comprises the steps that the dry-bulb temperature, the wet-bulb temperature and the current atmospheric pressure are obtained, and the current dew-point temperature is determined according to the dry-bulb temperature, the wet-bulb temperature and the current atmospheric pressure; determining a target temperature according to the dew point temperature; and controlling a heater in the electrical equipment to start until the temperature in the electrical equipment reaches the target temperature. The dew-point temperature is determined by integrating the dry-bulb temperature, the wet-bulb temperature and the current atmospheric pressure, the dew-point temperature is determined by integrating multiple factors of an application scene, then the heater is controlled according to the dew-point temperature, condensation can be effectively avoided, and the dehumidification effect is good.

The application relates to the drying technical field and discloses a method for controlling a heat pump roasting room, the heat pump roasting room comprising: a heat pump roasting room body, the heat pump roasting room body being provided with an air valve, the heat pump roasting room body being divided into multiple areas, and a wet bulb temperature sensor being correspondingly arranged in each area; the method comprising the following steps: determining a current wet bulb temperature sensor participating in controlling the on-off state of the air valve during roasting; determining a target sensor in the case that the current wet bulb temperature sensor has a water shortage fault; and controlling the on-off state of the air valve according to parameters acquired by the target sensor. In this way, the on-off state of the air valve can be controlled based on parameters acquired by other sensors in the case that the current wet bulb temperature sensor has a fault. The roasting process does not need to be interrupted, the humidity of a roasting environment can be accurately determined, and the roasting quality of materials is ensured. The application further discloses a device for controlling a heat pump roasting room, a heat pump roasting room and a storage medium.

The invention relates to the technical field of air conditioners, in particular to a control method of a low-temperature cold water indirect evaporative cooling air conditioning system which comprises a heat exchange core, a mechanical refrigeration assembly, a water tank, a spraying pipe, a heat exchanger and a three-way valve. The heat exchange core body comprises a dry channel and a wet channel. The system has a sensible heat cooling mode and an evaporation heat absorption mode, when water needs to be supplemented to the system, the sensible heat cooling mode is operated, moisture in outdoor inlet air can be separated out, and therefore water is supplemented to the system; when an evaporation heat absorption mode is operated, different states can be operated according to the outdoor environment dry-bulb temperature and the outdoor environment wet-bulb temperature, so that different working conditions can be adapted; in addition, the mechanical refrigeration assembly directly supplies cold to cooling liquid between the water tank and the spraying pipe through the heat exchanger, an evaporator does not need to be arranged at a dry channel outlet of the heat exchange core body to supply cold to indoor return air, air resistance is reduced, and annual energy consumption of an indoor fan is reduced.

An electric ventilation dry and wet bulb measuring instrument relates to the technical field of cooling tower appliances and comprises an air cylinder, the air cylinder is hinged to a support and swings along the support to adjust the inclination angle of the air cylinder, a dry bulb thermometer and a wet bulb thermometer are arranged in the air cylinder side by side, an electric fan is fixedly connected to the outlet end of the air cylinder, and a liquid containing barrel arranged in a swinging mode is hinged to the interior of the air cylinder. The bulb end of the wet bulb thermometer is coated with cotton yarn, and the other end of the cotton yarn extends into the liquid containing barrel. The temperature and humidity bulb measuring instrument solves the problems that in the using process of a temperature and humidity bulb measuring instrument in the prior art, along with reduction of potential energy of a torsional spring, the wind speed is unstable, fan rotation prompt sound is low, environment noise is large, and data errors are caused due to the fact that the fan stops rotating and cannot be recognized in time; and the problems that the overall angle cannot be adjusted according to the detection direction, the use range is reduced, and the use range is limited are solved.

The present invention provides a cooling tower optimization control method, device, terminal and medium for a central air-conditioning system, the method comprising: obtaining the wet-bulb approximation of the cooling tower and the comprehensive energy efficiency of the central air-conditioning system under the current environment; determining the control strategy to be optimized of the cooling tower corresponding to the lowest power consumption value of the cooling tower according to the wet-bulb approximation; optimizing the control strategy to be optimized by adjusting the modulation coefficient of the cooling tower model and the interaction information between the cooling tower and the adjacent cooling towers, and executing the optimized control strategy to maintain the comprehensive energy efficiency of the central air-conditioning system at the current moment greater than or equal to the comprehensive energy efficiency at the previous moment. The present invention calculates the wet-bulb approximation by considering the influence of the relative humidity of air, the synergistic effect of wind speed and the dynamic change of the cooling tower load rate on the wet-bulb temperature, and determines the control strategy, and further optimizes and executes the control strategy by modulating the cooling tower model and the interaction information of the parallel cooling towers to improve and maintain the comprehensive energy efficiency of the central air-conditioning system.

The present invention discloses an evaporative condenser, a method for controlling the fan frequency thereof, and an air-conditioning unit. Among them, the method includes: determining whether the air wet-bulb temperature at the outlet of the indoor fan is within a preset temperature range; if so, adjusting the frequency of the fan of the evaporative condenser according to the enthalpy difference between the inlet and outlet air of the evaporative condenser; if not, adjusting the frequency of the indoor fan according to the air wet-bulb temperature at the outlet of the indoor fan, and then adjusting the frequency of the fan of the evaporative condenser according to the enthalpy difference between the inlet and outlet air of the evaporative condenser. The present invention adjusts the frequency of the indoor fan according to the air wet-bulb temperature at the outlet of the indoor fan, and adjusts the frequency of the fan of the evaporative condenser according to the enthalpy difference between the inlet and outlet air of the evaporative condenser. Thereby, the dynamic adjustment of the indoor fan frequency and the evaporative condenser fan frequency is realized. The possibility of poor system operation stability and poor economy caused by too high or too low fan frequency is reduced.

The invention provides an evaporative cooling air conditioner control system for energy-saving operation of a low-condensation-temperature compressor, and relates to the technical field of automatic control, and the evaporative cooling air conditioner control system comprises an acquisition module which is used for acquiring the dry-bulb temperature and the wet-bulb temperature of outdoor air and the indoor return air temperature and the air supply temperature in real time, and calculating the heat transfer efficiency of a current air heat exchanger according to indoor and outdoor parameters; the judgment module is used for judging whether the current operation condition meets the operation condition of the indirect evaporative cooling mode or not according to the heat transfer efficiency and by combining the outdoor wet bulb temperature and the indoor set air supply temperature, and a judgment result is obtained; the control module is used for prohibiting starting of the compressor and utilizing a natural cold source if the judgment result meets the indirect evaporative cooling mode condition; and if the judgment result shows that indirect evaporative cooling cannot meet the refrigeration requirement, the compressor is allowed to be started, and mechanical cold supplementing is conducted. The energy consumption is effectively reduced, the refrigeration efficiency is improved, and energy-saving and efficient operation is achieved.

This invention discloses a baking process for improving the baking quality of the upper tobacco leaves of Guiyan 36, comprising the following steps: After loading the tobacco, close the loading door, turn on the automatic temperature and humidity control equipment, close the air inlet, and turn on the circulating fan for 1-2 hours; ignite the fire, raising the dry bulb temperature to 34.0℃-35.0℃ and the wet bulb temperature to 34.0℃-35.0℃, and bake at a stable temperature for 4-6 hours; then, raise the dry bulb temperature to 38.0℃ and the wet bulb temperature to 37.0℃, and bake at a stable temperature until the high-temperature layer tobacco leaves are 40-50% yellow; then, raise the dry bulb temperature to 42.0℃ and the wet bulb temperature to 37.0℃-38.0℃, and bake at a stable temperature until the high-temperature layer tobacco leaves are 70-80% yellow; then... Keep the dry-bulb temperature constant, and decrease the wet-bulb temperature from 37.0℃~38.0℃ to 36.0℃, 35.0℃, 34.0℃, and 33.5~33.0℃ in sequence. Then, control the wet-bulb temperature to remain constant at 33.5~33.0℃ and bake at a stable temperature and humidity until more than half of the leaf veins in the high-temperature layer turn white and shiny, the main veins soften and wilt, and the leaf tips dry for 5~10cm. After that, proceed to the color fixing stage and the rib drying stage in sequence.

The embodiment of the invention provides a refrigeration system and a refrigeration box, and relates to the technical field of refrigeration. The refrigeration system comprises a semiconductor refrigeration subsystem, a first water tank, an atomizer and a first air duct; the first water tank is connected with the atomizer and used for supplying water to the atomizer; a hot end fan of the semiconductor refrigeration subsystem is arranged in the first air duct, one end of the first air duct is provided with an opening part used for being communicated with the external environment, an atomizing nozzle of the atomizer is arranged in the first air duct, and the atomizing nozzle is arranged between the opening part of the first air duct and the hot end fan. Therefore, by additionally arranging the first water tank and the atomizer, the humidity of air is gradually increased, the temperature of the air is greatly reduced and gradually approaches the wet bulb temperature, and then the air enters the hot end fan under the guidance of the first air duct to cool a hot end radiator of the semiconductor refrigeration subsystem, so that the temperature of the hot end of a semiconductor refrigeration sheet can be greatly reduced; the energy efficiency and the refrigerating capacity of the system are improved.

The invention relates to the field of data center energy saving, and discloses a data center refrigeration system energy saving method which comprises the following steps: 1) data monitoring and preprocessing; 2) proposing a data center refrigeration system heat exchange model; (3) according to the position and the load of the data center machine room server, CFD simulation software is used for calculating the cooling load needed by the precise air conditioner for enabling the cabinet to have the safe temperature, and an AI algorithm is used for establishing an intelligent prediction model; and 4) debugging to obtain unknown parameters of the heat transfer model, determining a critical outdoor critical wet bulb temperature TL which can completely depend on a natural cold source and a critical outdoor critical wet bulb temperature TH which can completely get rid of the natural cold source and is obtained after the working condition of the data center is stable, and establishing a time-temperature grid coordinate system in combination with a local peak-valley electricity price time rule. 5) designing an equipment opening and closing strategy of each grid in the time-temperature grid coordinate system; and 6) according to the position of the data center outdoor wet bulb temperature and time in the grid coordinate system, executing the operation corresponding to the position.

The application provides an electrical equipment heating and dehumidification control method and a control terminal. The electrical equipment heating and dehumidification control method comprises the following steps: obtaining a dry-bulb temperature, a wet-bulb temperature and a current atmospheric pressure, and determining a current dew point temperature according to the dry-bulb temperature, the wet-bulb temperature and the current atmospheric pressure; determining a target temperature according to the dew point temperature; and controlling a heater in the electrical equipment to be turned on until the temperature in the electrical equipment reaches the target temperature. The application determines the dew point temperature by comprehensively considering the dry-bulb temperature, the wet-bulb temperature and the current atmospheric pressure, determines the dew point temperature by comprehensively considering various factors of a scene, and controls the heater according to the dew point temperature, so that condensation can be effectively avoided, and the dehumidification effect is good.