130 results about "Dry-bulb temperature" patented technology

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.

Liquid desiccant air conditioning systems and methods to operate them to achieved desired supply air dry bulb temperature and humidity conditions are described herein. In some embodiments, the liquid desiccant air conditioning systems can include a cooling unit, an absorber, a regenerator, and a control unit. The control unit can be operably coupled to the cooling unit, the absorber, and the regenerator such that the control unit can operate the liquid desiccant system to produce a supply air stream at a relatively independent target temperature and humidity. In some embodiments, the control unit can adjust one or more parameters and / or variables of the components of the liquid desiccant system to produce the supply air stream at a high energy efficiency.

The present invention discloses a baking method for the upper leaves of GZ36 flue-cured tobacco, comprising the following steps: S1, judging the baking characteristics of the upper leaves of GZ36 flue-cured tobacco; S2, harvesting fresh tobacco leaves when ripe: harvesting fresh tobacco leaves when ripe according to the ripe characteristics of fresh tobacco leaves in low-altitude areas and high-altitude areas; S3, classifying and stringing fresh tobacco leaves and loading them into the baking barn; S4, baking fresh tobacco leaves: scientifically baking according to the baking characteristics and ripe characteristics of tobacco leaves in different regions, wherein during the yellowing stage, the dry-bulb temperature cyclic rise and fall method is adopted to promote the tobacco leaves to fully soften and wither. By judging the baking characteristics of the upper leaves of GZ36 flue-cured tobacco, formulating key baking strategies, harvesting fresh tobacco leaves when ripe according to the ripe characteristics of fresh tobacco leaves in different regions, classifying and stringing them and loading them into the baking barn, and scientifically baking according to the baking characteristics and ripe characteristics of tobacco leaves under different ecological conditions in different regions, and adopting the dry-bulb temperature cyclic rise and fall method during the yellowing stage to promote the tobacco leaves to fully soften and wither, the internal quality of the upper tobacco leaves after baking of GZ36 can be effectively improved.

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 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 discloses a photovoltaic system capacity configuration method and device based on power generation and power utilization matching, and the method comprises the steps: obtaining historical meteorological data which comprise dry-bulb temperature, relative humidity, solar radiation and wind speed; calculating a future power generation data sequence and a future power utilization data sequence according to the historical meteorological data; performing correlation analysis processing according to the historical meteorological data, the future power generation data sequence and the future power consumption data sequence to obtain a target influence factor; dividing the working scene according to the target influence factor to obtain a target working scene; performing power generation and power utilization matching processing according to the target working scene, and calculating a comprehensive benefit evaluation value; and determining a photovoltaic system capacity configuration result according to the plurality of comprehensive benefit evaluation values. According to the invention, the capacity configuration of the photovoltaic system is realized, and the accuracy, the energy utilization rate and the matching degree of power generation and power utilization are improved. The system can be widely applied to the technical field of photovoltaic systems.

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 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 relates to a temperature control system control method and device, temperature control equipment and a storage medium. The method comprises the steps that even if the environment temperature and humidity change dynamically, the air dew point temperature can be recalculated according to the air dry-bulb temperature and the relative humidity which change suddenly, and a proper safety margin is calculated by combining the humidity change rate under the environment temperature and humidity change suddenly; the target temperature of the matched environment is calculated by integrating the air dew point temperature and the safety margin, and then the operation parameters of the temperature control equipment are controlled according to the target temperature so as to effectively respond to dynamic sudden change of the environment temperature and humidity, and it is ensured that the temperature of an evaporator coil does not fluctuate along with the target temperature to cause the condensation phenomenon.

The invention discloses a double-heat-source heating system and a construction method thereof. The double-heat-source heating system comprises a gas-fired boiler, an air source heat pump and a controller. The construction method comprises the steps that the instant highest hot water temperature of the heat pump, the system equipment highest water temperature, the system instant water supply temperature, the system instant water return temperature and the instant heat load are obtained according to the historical hourly dry-bulb temperature; setting a plurality of heat pump water supply temperatures; the maximum instant hot water temperature of the heat pump is obtained, the minimum value of the maximum water temperature of system equipment and the water supply temperature of the heat pump is set as the instant water supply temperature of the heat pump, and then the instant boiler specification, the instant gas fee, the instant heat pump specification and the instant electricity fee are obtained; setting an evaluation duration; the total heating cost in the evaluation duration is obtained; the maximum value of the instant boiler specification and the maximum value of the instant heat pump specification corresponding to the minimum value of each heating total cost are configuration of the double-heat-source heating system. The controller is configured to control the air source heat pump and the gas-fired boiler to operate according to the instant water supply temperature of the heat pump. The heating cost is reduced.

Embodiments of the present application provide a dehumidification control method, a control device, a dehumidification system and a storage medium. The method is applied to a dehumidification system including a dehumidification device and a fan, and includes: in the case that the environmental humidity and / or the environmental dew point temperature of a current environment meets a dehumidification condition, determining a target running state of the dehumidification device and a target running state of the fan according to a dry-bulb temperature, the environmental dew point temperature and a preset start-up dew point temperature; wherein the start-up dew point temperature is used to indicate the start-up of the dehumidification device; and controlling the dehumidification device and the fan to run in the target running state of the dehumidification device and the target running state of the fan respectively. The method is used to achieve the effect of effective dehumidification in various different scene environments.

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 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.

A heat exchange station heat load correction method considering building heat characteristics mainly comprises the following steps that S1, operation parameters and weather parameters of a heating station and a user position are obtained, and the operation parameters and the weather parameters mainly comprise the heat supply amount of the heat exchange station, the secondary network water supply temperature, the secondary network water return temperature, the heat supply area of the user and the outdoor dry-bulb temperature; s2, the indoor temperature Tin, 0 of a user at a certain moment or in a certain period of time is collected, and a building heat exchange characteristic parameter BC0 is calculated according to the outdoor dry-bulb temperature and the two-network supply and return water temperature at the current moment or in the current period of time; and S3, complementing the indoor temperature of the user at other moments according to the building heat exchange characteristic parameter BC0. And S4, according to the two-network supply and return water temperature and the outdoor dry-bulb temperature at each moment and the building heat exchange characteristic parameter BC0 obtained through calculation in the step S2, actual indoor temperatures at all moments are obtained through calculation. And S5, according to the outdoor dry-bulb temperature, the indoor temperature of the user and the heat supply area of the user, a relation model of the indoor temperature of the user and the heat load of the heat exchange station is constructed. And according to the existing operation parameters, identifying the heat capacity C'of the unit heat supply area in the model and the indoor heat loss mu under the unit temperature difference of the unit heat supply area by adopting a particle swarm algorithm. And S6, the heat load of the heat exchange station is corrected by using the relation model of the indoor temperature of the user and the heat load of the heating station, and the corrected heat load can be used as input data of load prediction.

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 application discloses a condensation-preventing regulation method, a heat pump system, a device and a storage medium, and comprises the following steps: obtaining a dew point temperature according to a dry-bulb temperature and a relative humidity; formulating a heat dissipation refrigerant temperature according to the dew point temperature; obtaining a heat dissipation refrigerant flow rate based on a preset heat dissipation temperature and flow rate relationship model according to the heat dissipation refrigerant temperature; controlling a control module to control the second valve core to operate to adjust a second hot gas flow rate according to the heat dissipation refrigerant flow rate; obtaining a second inlet gas temperature of required refrigerant at the second inlet according to the heat dissipation refrigerant temperature and the heat dissipation refrigerant flow rate, and obtaining a heat dissipation output refrigerant temperature; obtaining a first hot gas flow rate of the first hot gas outlet according to the first inlet gas temperature and the second inlet gas temperature; and controlling the control module to control the first valve core to operate to adjust the first hot gas flow rate. The design reduces the risk of condensation, guarantees the heat dissipation demand of the control module, does not need to improve energy consumption, and is safe and reliable in use.

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.

The utility model relates to a temperature and humidity adjusting and testing device of a battery plate curing chamber, which comprises an indoor water tank positioned inside the curing chamber and an outdoor water tank positioned outside the curing chamber, the outdoor water tank is communicated with the indoor water tank, a water inlet pipe is mounted on the outdoor water tank, and a floater ball valve is mounted on the water inlet pipe. Overflow holes are formed in the tank wall of the outdoor water tank; a dry-bulb temperature probe and a wet-bulb temperature probe are arranged in the curing chamber, the dry-bulb temperature probe and the wet-bulb temperature probe are arranged in parallel up and down, the dry-bulb temperature probe is located at the upper part of the wet-bulb temperature probe, the wet-bulb temperature probe is wrapped by water-absorbing gauze, and the water-absorbing gauze is partially immersed in the liquid level of the indoor water tank. Compared with the prior art, the temperature and the humidity in the curing chamber can be monitored more accurately and timely, the liquid level height of the water tank in the curing chamber can be better controlled, and the problem that the humidity in the curing chamber is reduced slowly in the polar plate drying stage due to overflow is solved.

The invention relates to a control method and device of a water chilling unit, the water chilling unit and a storage medium. The method comprises the steps that when the target water outlet temperature of the water chilling unit is smaller than the environment dry-bulb temperature, and the environment dry-bulb temperature is smaller than the natural cooling water inlet temperature of a natural cooling heat exchanger, the natural cooling heat exchanger is started; a first difference value between the natural cooling water outlet temperature of a natural cooling heat exchanger in the water chilling unit and the target natural cooling water outlet temperature is obtained; according to the first difference value, whether the frequency of a draught fan in the water chilling unit is adjusted or not is determined, so that the first difference value is zero; under the condition that the first difference value is zero, the compressor frequency in the water chilling unit is adjusted to the target compressor frequency; and according to a second difference value between the outlet water temperature of the compressor and the target outlet water temperature, whether the frequency of the compressor is adjusted again or not is determined, so that the second difference value is zero. By means of the control method and device, the problems that during mixed refrigeration, the compressor frequency and the fan frequency need to be controlled at the same time through the outlet water temperature, adjustment is slow, and mutual interference is caused are solved.

The invention discloses a comprehensive energy complementation energy-saving operation method, device and system, and the method comprises the steps: determining a target hot water use amount according to a dry-bulb temperature and a wet-bulb temperature predicted in the whole day, and the occupancy rate of a room; according to the target hot water use amount, the water use peak period and the water use non-peak period, the hot water use amount needed to be used hour by hour in the Mingming day is determined; in the first time period, the first operation duration of the heat pump is determined with the minimum total cost according to the hot water using amount required to be used hourly in the whole day, the water using duration in each time period and the heat recycled by the air cooling unit; and in the second time period, the second operation time length of the heat pump is determined by minimizing the total cost according to the hot water consumption required to be used hour by hour in the whole day, the water consumption time length in each time period, the heat recovered by the air cooling unit and the heat corresponding to the solar energy. By adopting the technical scheme, the maximum economic benefit of multi-energy complementary operation can be realized.

The present application relates to the technical field of facility agriculture environment control, and discloses a non-electric variable adjustment method for temperature and humidity of an anaphalis contorta growing environment, which comprises the following steps: collecting dry-bulb temperature and relative humidity and calculating real-time dew point temperature to generate a dew point approximation index; when the dry-bulb temperature is higher than a set value and triggers cooling, monitoring the relationship between the index and a safety defense threshold; when the index is lower than the threshold, locking the permission of humidifying and driving ventilation; when the index is higher than the threshold, unlocking the permission and limiting the humidifying output according to the dry-bulb temperature drop rate, so that the dew point rise rate is lower than the dry-bulb temperature drop rate. Through the establishment of the dew point defense boundary and the asynchronous decoupling control logic, the present application solves the transient condensation problem caused by the response time constant mismatch in the multivariable coupling system, eliminates the leaf surface micro-condensation risk, and realizes the high-precision non-destructive regulation and control of the anaphalis contorta growing environment.

The invention belongs to the technical field of tobacco leaf processing and curing, and particularly relates to a method for curing tobacco leaves difficult to cure by using a high-nitrogen and low-oxygen technology, the curing refers to a process of curing the tobacco leaves difficult to cure in a curing barn, and the curing process comprises a firing period, a yellowing period, a color fixing period and a stem drying period; in the firing period, the baking dry-bulb temperature in a baking room is 30-30.5 DEG C, the wet-bulb temperature is 30 DEG C, and the temperature is raised to the early stage of yellowing at the speed of 0.5 DEG C / h; moisture removal is started in the later period of yellowing; moisture removal is carried out in the whole baking process in the color fixing period; the temperature, humidity, nitrogen concentration and oxygen concentration in the curing barn are monitored in the yellowing period and the color fixing period, and nitrogen is conveyed into the curing barn according to process requirements; according to the process requirements, nitrogen is conveyed into the curing barn when the conditions in the curing barn are that the temperature is larger than or equal to 44 DEG C and smaller than or equal to 48 DEG C, the nitrogen concentration is smaller than or equal to 89%, and the oxygen concentration is larger than or equal to 10%. The problem that the tobacco leaves are damaged by baking due to enzymatic browning reaction when the tobacco leaves are baked in an existing baking room is solved, and the baking quality of the tobacco leaves is improved.

The invention discloses a low-temperature humidity control method for an automobile environment test chamber, which relates to the technical field of automatic control of test chambers and comprises the following steps: acquiring dry-bulb temperature, relative humidity and atmospheric pressure in the chamber, front and back pressure difference of a coil pipe, air volume, surface temperature of the coil pipe and outlet temperature of the coil pipe, and calculating air mass flow and moisture content in the chamber; symmetrical temperature perturbation is applied with the current coil pipe surface temperature as the center, coil pipe air side channel impedance coefficients are calculated at different temperature points, and an impedance curvature index is calculated according to the coil pipe air side channel impedance coefficients; a continuous inhibition factor is generated based on the impedance curvature index, a basic dehumidification demand obtained by the moisture content deviation is continuously corrected, and a planned dehumidification mass flow rate is obtained; and the humidification mass flow rate, the coil pipe target temperature and the reheating power are further calculated and issued to a refrigerating loop, a humidifier and a reheater. The low-temperature humidity control stability of the test chamber can be improved.

The invention provides a three-stage cooling air cooler applied to a data center. The three-stage cooling air cooler comprises a sensible heat air cooler, a condensation air cooler, a fan assembly, a spraying assembly and a supercooling air cooler, and the sensible heat air cooler conducts sensible heat cooling on a CO2 working medium; the fan assembly is used for controlling air flow; the spraying assembly is used for spraying water mist to achieve cooperative heat exchange with air. The condensation air cooler, the draught fan assembly and the spraying assembly conduct heat exchange through water mist and air. The supercooling air cooler is used for carrying out dew-point evaporative cooling; the controller is configured to obtain a dry-bulb temperature and a wet-bulb temperature; and based on the dry-bulb temperature and the wet-bulb temperature, a sensible-heat air cooler, a condensation air cooler, a fan assembly, a spraying assembly and a supercooling air cooler are controlled to execute an operation mode. According to the three-stage cooling air cooler, the working medium flow is optimized through a three-stage cooling structure, cooperative heat exchange with the air side is achieved, the heat exchange efficiency is improved, and the pressure drop loss is reduced.

The application provides an air conditioner energy efficiency test method, an indoor side temperature and humidity dynamic adjustment method in a test process, an air conditioner energy efficiency test system, a computer device and a readable storage medium. The indoor side temperature and humidity dynamic adjustment method comprises the following steps: obtaining an outdoor dry bulb temperature at a current time, an outdoor wet bulb temperature at the current time, an indoor dry bulb temperature at the current time and an indoor wet bulb temperature at the current time; an air conditioner energy efficiency test unit measures each energy efficiency parameter of the air conditioner in real time within a preset test period; according to the outdoor dry bulb temperature at the current time, the outdoor wet bulb temperature at the current time, the indoor dry bulb temperature at the current time, the indoor wet bulb temperature at the current time and at least part of the energy efficiency parameter at the current time, the indoor dry bulb temperature at a next time after a preset time interval and the indoor wet bulb temperature at the next time are calculated; and the indoor dry bulb temperature and the indoor wet bulb temperature of the air conditioner energy efficiency test unit are adjusted according to the indoor dry bulb temperature at the next time and the indoor wet bulb temperature at the next time. The method can measure the dynamic energy efficiency of the air conditioner in the process of the dynamic change of the indoor side dry bulb temperature and the indoor side wet bulb temperature, and can reflect the energy efficiency level of the air conditioner in actual operation.

This invention discloses a method for improving the curing quality of upper tobacco leaves under arid conditions. This method targets upper leaves in arid climates, characterized by a compact structure, low leaf water content, and water bound to cellular tissue. During the yellowing stage, a dry-bulb temperature of 42-43℃ and a wet-bulb temperature of 38-39℃ are used to keep the stomata on both sides of the leaf open, ensuring the smooth removal of moisture from the tobacco leaf and allowing O2 from the curing barn to continuously enter the leaf through the stomata, aiding in the degradation of macromolecular organic matter and thus guaranteeing the quality of the tobacco leaf. This invention improves the curing quality of upper leaves under arid climates and reduces the occurrence of ash and discoloration during the curing process.

The invention discloses a regulation and control method and device for a data center refrigeration system and a computer program product, and the method comprises the steps: carrying out the fitting processing of the previous operation data (such as the lower tower water temperature of a cooling tower) of a target data center refrigeration system and the environment data (such as the outdoor dry-bulb temperature and the moisture content) of the environment where the target data center refrigeration system is located; and determining a time-space point where the target data center refrigeration system is located so as to complete positioning of the operation state. And calculating the theoretical energy efficiency of the target data center refrigeration system by using the tail end load data at different time-space points, the target operation data of the target data center refrigeration system, the target environment data of the located environment and the target energy consumption data, comparing the theoretical energy efficiency with the actual energy efficiency, and further calculating the energy efficiency of the target data center refrigeration system according to the comparison result. And the operation parameters of the system are properly adjusted to change the operation state point of the target data center refrigeration system, so that the regulation and control efficiency and accuracy of the target data center refrigeration system are improved, and an ideal regulation and control effect is achieved.