39 results about "Dry-bulb temperature" patented technology

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 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.

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 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.

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 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 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.

The utility model relates to the field of temperature and humidity measuring equipment, and particularly discloses a dry and wet bulb temperature and humidity inspection recorder, which comprises even number of temperature sensors, a multi-channel temperature acquisition instrument, a touch control screen and a communication module, the multi-channel temperature acquisition instrument comprises a plurality of acquisition channels, and each temperature sensor is connected with the plurality of acquisition channels of the multi-channel temperature acquisition instrument through a spaceflight plug; the communication module transmits processing data of the multi-channel temperature acquisition instrument to the touch controller, and the touch control screen records the data acquired by the multi-channel temperature acquisition instrument and calculates temperature and humidity parameters according to a set program. The utility model solves the problems that the conventional recorder does not have the function of measuring the relative humidity by using the temperature of a dry-wet bulb, and the precision and the stability are not favorably maintained in the standard detection in a complex environment when the humidity is measured by using a capacitive humidity sensor.

The application discloses an indoor body temperature sensing detection device and method, and relates to the technical field of indoor environment monitoring. The device comprises a sensing and collecting module, a central processing module and a terminal module. The sensing and collecting module comprises an air dry bulb temperature sensor, a relative humidity sensor, a breeze speed sensor and a black ball radiation thermometer. The parallel sensing array composed of the air dry bulb temperature sensor, the relative humidity sensor, the breeze speed sensor and the black ball radiation thermometer is arranged to synchronously acquire multi-dimensional basic physical parameters, thereby overcoming the defect that the traditional device only relies on single temperature and humidity, which causes the detection value to be disengaged from the real thermal perception of the human body. The physical isolation structure corresponding to the independent signal transmission cable of each sensor is welded, thereby avoiding channel crosstalk during the concurrent transmission of multiple signals and ensuring the signal integrity of the underlying original physical data.

The invention discloses a room air conditioner dynamic energy efficiency test method, which adopts an enthalpy difference laboratory to carry out room air conditioner energy efficiency test, an indoor side working condition unit of the enthalpy difference laboratory is connected with a dynamic energy efficiency test module, and the dynamic energy efficiency test module comprises a data interaction regulation and control module and a dynamic load calculation module. The data interaction regulation and control module acquires test data at the current moment in real time; the dynamic load calculation module generates the indoor side room dry-bulb temperature target value and the indoor side room wet-bulb temperature target value in the next time step length based on the current moment test data obtained by the data interaction regulation and control module, and sends the indoor side room dry-bulb temperature target value and the indoor side room wet-bulb temperature target value to the indoor side working condition unit; and the indoor side room dry-bulb temperature and the indoor side room wet-bulb temperature in the next time step are controlled. The indoor side room environment parameters can be dynamically adjusted according to the running state of the room air conditioner in the testing process, and therefore the load change of the room air conditioner in actual use is simulated.

The application discloses a kind of combination clothing correction wet ball black ball temperature detection method and electronic equipment, including real-time acquisition environmental parameter and obtain the clothing image information of work personnel in the target area to be measured, environmental parameter at least includes natural wet ball temperature, black ball temperature and dry ball temperature;Utilize clothing image information to identify clothing type by image recognition algorithm, including first by target detection model target positioning and region of interest extraction, detect human target in image, and then input classification network, the end of the main network of classification network is replaced by texture coding layer global average pooling module;Based on environmental parameter calculation basis WBGT value, based on the clothing type determined corresponding clothing correction value is found, and effective wet ball black ball temperature is obtained by clothing correction value to basis WBGT value revision.The application reduces the risk of human misjudgment, improves the convenience and accuracy of detection.

The invention belongs to the technical field of tobacco baking, and particularly relates to a baking method for regulating and controlling amino acid content of tobacco leaves based on respiration. According to the method, in the yellowing period, the color fixing period and the stem drying period of tobacco leaf curing, the respiration intensity of tobacco leaves is precisely regulated and controlled and amino acid loss is inhibited by cooperatively regulating and controlling the dry-bulb temperature, the wet-bulb temperature, the CO2 concentration, the O2 concentration and the circulating air volume in a curing barn, so that the sensory quality of flue-cured tobacco is improved. According to the method provided by the invention, the technical mode that traditional baking only depends on temperature and humidity to carry out passive regulation and control is broken through, a CO2 / O2 gas environment-based tobacco leaf respiration intensity active regulation and control mechanism is constructed, and cooperative closed-loop control is carried out on gas concentration, temperature, humidity and circulating air quantity in a yellowing period, a color fixing period and a stem drying period; the whole-process accurate management of the tobacco leaf respiration is realized, the problem of alternation of breathing outbreak and breathing insufficiency is effectively avoided, and the controllability and stability of the baking process are remarkably improved.

This invention provides an air conditioner and its control method, device, storage medium, and computer program product, belonging to energy-saving refrigeration and air conditioning equipment. The method includes: after the air conditioner is turned on for cooling, acquiring the indoor dry-bulb temperature, indoor wet-bulb temperature, outdoor dry-bulb temperature, and / or indoor heat exchanger temperature, and acquiring a set target temperature; calculating the room's sensible heat load and latent heat load based on the indoor dry-bulb temperature, indoor wet-bulb temperature, outdoor dry-bulb temperature, and / or indoor heat exchanger temperature; predicting the compressor's target frequency and the indoor fan's target speed based on the room's sensible heat load, latent heat load, acquired indoor dry-bulb temperature, indoor heat exchanger temperature, and set target temperature; controlling the compressor frequency based on the predicted compressor target frequency, and controlling the indoor fan speed based on the predicted indoor fan target speed. This invention enables predictive control of the room's heat and humidity load, achieving energy-saving effects through the coordinated optimization of the compressor and fan.

The invention discloses an index prediction system and method based on an artificial intelligence big data platform, and relates to the technical field of big data platform index prediction, and the method comprises the steps: calculating a dew point temperature and a humid air enthalpy value based on the dry-bulb temperature, relative humidity and air pressure of a data center electromechanical environment; determining the over-threshold depth according to the cold surface temperature and the dew point temperature of the monitoring site; establishing a baseline model based on the internal operation amount and the prediction index to obtain a baseline prediction value; fitting the residual error and the wet air enthalpy value change to obtain a local second-order curvature; and calculating a driving index and correcting the baseline predicted value to generate a final predicted value. The method can effectively improve the prediction precision, and provides reliable support for system operation decision making.

The invention discloses a temperature regulation control method, refrigeration equipment, a device and a storage medium, which comprises the following steps: when a door opening signal representing that a door body is opened is obtained, executing a temperature regulation and dehumidification step: obtaining real-time dry-bulb temperature and freezing relative humidity; when the freezing relative humidity is larger than the freezing target humidity, the dew point temperature is calculated according to the dry-bulb temperature and the freezing relative humidity; according to the dew point temperature and the frosting temperature, a temperature regulation and control value is formulated; the refrigeration module is controlled to operate according to the real-time freezing temperature and the temperature regulation value; the temperature adjusting and dehumidifying step is circularly carried out until the relative freezing humidity is smaller than or equal to the target freezing humidity, the refrigeration module is controlled to operate according to the real-time freezing temperature and the temperature target value, and the temperature target value is the set target freezing temperature. And the frosting probability can be reduced while the humidity in the freezing cavity is reduced, and use is stable and reliable.

The invention relates to a community thermal radiation environment evaluation method, system and device considering pedestrian activities and a medium, and the method comprises the steps: carrying out the gridding of a community pedestrian region, planning an inspection path, controlling an inspection device to carry out the inspection, and synchronously collecting the dry-bulb temperature, the black-bulb temperature and a panoramic image; calculating the temperature difference of each reachable grid point according to the dry-bulb temperature and the black-bulb temperature, and obtaining a thermal environment evaluation index in combination with a preset pedestrian activity weight associated with the grid point; the view proportion distribution of the surfaces of various objects is analyzed according to the panoramic image, a comprehensive radiation background factor is obtained by combining the radiation contribution weights of the various objects, and then the temperature difference of each reachable grid point, the pedestrian activity weight and the effective radiation load proportion of the building outer wall are fused to obtain a building outer wall transformation potential index; and outputting together with the thermal environment evaluation value. Therefore, efficient and standardized community thermal environment data acquisition and quantitative analysis are realized, and decision support can be provided for outer wall reconstruction of a building.

The invention provides an air conditioner energy efficiency testing method, device and equipment, and relates to the technical field of air conditioner energy efficiency testing. The method comprises the following steps: calculating a human body thermal comfort feeling index value corresponding to each historical moment according to historical environment data; screening the historical environment data according to the human body thermal comfort feeling index value and the historical outdoor dry-bulb temperature to obtain target historical environment data, and calculating the historical moisture content according to the target historical environment data; clustering the target historical environment data and the historical moisture content to obtain a plurality of typical outdoor climate working conditions and occurrence time proportions corresponding to the typical outdoor climate working conditions; and determining the energy efficiency of the air conditioner according to the to-be-predicted working condition parameters of the air conditioner under each typical outdoor climate working condition and the occurrence time proportion corresponding to each typical outdoor climate working condition. The method can ensure that the obtained test working condition has representativeness, provides reliable support for accurate energy efficiency evaluation of the air conditioner, and ensures the accuracy of an air conditioner energy efficiency evaluation result.

This invention discloses a fresh air purification and energy regulation system based on a dual-tower closed-loop water circulation system, relating to the field of building ventilation and air conditioning technology. The system uses water as the phase change working fluid and purification medium, and includes a dual-tower closed-loop cross-circulation energy recovery and purification core unit, a water treatment and maintenance module, a power and precision control module, and a temperature-controlled sterilization chamber post-treatment module. The air source heat pump only controls the water temperature in the exhaust gas water tank; the fresh air water tank temperature is naturally formed through circulation. Air and water exchange heat and mass in a counter-current flow within the spray tower packing layer, achieving net energy gain through water phase change. The system prioritizes dehumidification, operates adaptively in all seasons, with the fresh air outlet temperature approaching the wet-bulb temperature of the exhaust gas in summer and approaching the dry-bulb temperature in winter. The dynamic energy recovery rate reaches 126%, the water medium provides deep purification without secondary pollution, the core components are easy to maintain, and it is suitable for ventilation regulation in various buildings, combining high energy efficiency, high adaptability, and health benefits.

The invention discloses a baking control method based on adaptive voltage feedforward and thermal inertia damping compensation. According to the method, a double-layer temperature field monitoring model is constructed, and the space environment dry-bulb temperature, the wet-bulb temperature and the heat source surface temperature are collected; the electrical parameter monitoring module is used for acquiring the voltage and frequency of the power grid in real time, performing voltage fluctuation feed-forward compensation in combination with a physical power model, dynamically adjusting the conduction angle of the thyristor, and eliminating the influence of the voltage fluctuation of the power grid on the heating power; meanwhile, the heat conduction efficiency is calculated based on the temperature difference change rate of the heat source and the space, thermal inertia damping logic is introduced to conduct dynamic amplitude limiting on the control quantity, and heat source overload caused by air duct blockage or fan faults is prevented. According to the invention, the problems of large temperature control fluctuation and lack of active safety protection of equipment in a rural weak power grid environment are effectively solved, and high-precision constant-power control and intrinsic safety of the equipment are realized.

The invention relates to the technical field of air conditioners, and discloses an air conditioner real-time capacity calculation method which aims at solving the problems that an existing air conditioner refrigeration / heating capacity calculation method depends on an air outlet sensor and is poor in precision, and the scheme mainly comprises the steps that the air inlet air drying ball temperature, the air inlet wet ball temperature and the evaporator inlet, outlet and middle temperature are detected in real time; an air inlet enthalpy value is calculated according to the air inlet parameters; fitting the temperature of the evaporator through a least square method to obtain the air outlet dry ball temperature; in the refrigeration mode, the air inlet dew point temperature is calculated and compared with the evaporator middle temperature, and the dehumidification state is judged: if dehumidification is not carried out, the air outlet moisture content is equal to the air inlet moisture content; if dehumidification is carried out, the preset air outlet relative humidity is determined; and air outlet enthalpy values are respectively calculated. And the moisture content of outlet air is kept unchanged during heating. And finally, in combination with the pre-stored unit air quality, calculating the product of the enthalpy difference of the inlet and outlet air and the quality to obtain the real-time capability. No sensor needs to be installed at the air outlet of the air conditioner, and the calculation precision is improved.

The application discloses a kind of WBGT index instrument temperature sensor calibration device and method, the device includes first thermostat, second thermostat, standard thermostat and temperature measurement system, the WBGT index instrument being calibrated includes black ball temperature sensor, wet bulb temperature sensor and dry bulb temperature sensor, standard thermostat places the WBGT index instrument being calibrated and calibrates dry bulb temperature sensor, first thermostat calibrates black ball temperature sensor, and second thermostat calibrates wet bulb temperature sensor;First and second thermostat include thermostat cover, liquid thermostat tank, liquid circulating pump, liquid return pipe, liquid inlet pipe, liquid sampling pipe and heat preservation layer, thermostat cover includes test cavity, liquid flow interlayer, liquid inlet hole and liquid return hole, temperature value in test cavity is close to the temperature value of liquid thermostat tank consistent.The application can independently provide stable and uniform temperature field for black ball temperature sensor, wet bulb temperature sensor and dry bulb temperature sensor respectively.

The invention discloses a fresh air conditioner control method and device, a fresh air conditioner and a storage medium, and the fresh air conditioner control method comprises the steps that when T is larger than or equal to T0 'and smaller than or equal to T0-delta T and RH is larger than RH0-delta RH, a refrigeration and reheating mode is executed; the refrigeration and reheating mode execution comprises the steps that refrigeration is executed, the enthalpy value of an air state point after refrigeration is H1, the dry-bulb temperature is T1, and the refrigeration enthalpy difference delta H is equal to H-H1; wherein H1 is determined according to the fresh air temperature T and the relative humidity RH0-delta RH, T1 is determined according to the condition that the relative humidity RH1 of the refrigerated air ranges from 90% to 95%, and H is the initial enthalpy value of the fresh air; and the reheating step is executed, and the reheating temperature rise delta T1 is equal to T-T1. According to the fresh air conditioner control method and device, the fresh air conditioner and the storage medium, the humidity can be conveniently controlled, the warehouse storage requirement can be met, meanwhile, the operation load of the fresh air conditioner is reduced, and the operation cost is reduced.

This invention relates to a method and system for identifying abnormal patterns in building energy consumption, belonging to the field of building energy consumption technology. It includes the following steps: collecting total building power and outdoor dry-bulb temperature data; constructing a set of temperature change events; generating a temperature response weight sequence and a collaborative feature tensor through one-sided hysteresis attenuation; designing a dual-branch convolutional autoencoder network to decouple base power and temperature response load; training the model using local change weighted reconstruction loss; and setting a threshold based on the reconstruction error distribution of normal samples to complete the anomaly determination. This invention eliminates the need for anomaly labels, explicitly characterizes the building's thermal inertia characteristics, and can significantly improve the identification accuracy of temperature-driven energy consumption anomalies. It is suitable for online energy consumption monitoring of public buildings with a high proportion of air conditioning load.

The utility model provides an energy storage type air cooling module machine. The energy storage type air cooling module machine comprises a compressor (1), a refrigerant-air heat exchanger (2), a refrigerant-water heat exchanger (3), an energy storage device (4), a four-way valve (5), a gas-liquid separator (6), a switching valve set (7), a liquid storage device (8), a drying filter (9) and an expansion valve (10). And the refrigerant directly enters the energy accumulator, so that the energy consumption of the secondary refrigerant pump is saved, the refrigeration efficiency is improved, and the system efficiency can be improved compared with the traditional ice storage. The air cooling module unit (namely the refrigerant-air heat exchanger) is adopted, the refrigeration efficiency of the air cooling module unit is related to the environment dry-bulb temperature, and the environment dry-bulb temperature is generally 8-10 DEG C lower than that in the daytime during the off-peak electricity period at night, so that a better environment is provided during ice making, and the refrigeration efficiency during ice making is improved. In addition, primary heat exchange is reduced, energy consumption of a secondary refrigerant pump is reduced, and environment factors of day and night temperature difference are utilized, so that the total storage and discharge efficiency is basically equivalent to that of direct cooling, and even can exceed that of direct cooling.

The invention relates to a railway vehicle air conditioning unit which comprises a compressor, a condenser, an evaporator and a water pan arranged at the bottom of the evaporator. The water storage piece is connected with the water receiving disc through an input pipeline, and condensate water in the water receiving disc is conveyed into the water storage piece through the input pipeline. Wherein the air inlet end of the condenser is further detachably connected with a humidifying part, the humidifying part is connected with the water storage part through a water conveying structure, the water conveying structure is configured to convey condensate water stored in the water storage part to the humidifying part, a power structure does not need to be arranged, the structure is simple, and assembly and maintenance are convenient; the temperature of the condensate water is low, the wet evaporation humidification part effectively reduces the dry-bulb temperature of air entering the condenser, the condenser operates under the condition equivalent to the lower environment temperature, shutdown of a compressor is avoided, and system operation is safer and more reliable.

The invention discloses a high-pressure air cooling island spraying cooling method for a 240kW spraying water pump powered by a 6kV voltage class, and relates to the technical field of thermal power generation. The method comprises the steps that the 240kW spraying water pump and a 6kV medium-voltage frequency converter are directly connected to a 6kV station bus of a power plant, and the steam exhaust back pressure, the environment dry-bulb temperature and the wet-bulb temperature of a steam turbine are collected; whether spraying is started or not is judged based on the back pressure and the temperature difference between the dry bulb and the wet bulb, target spraying flow is generated, the optimal rotating speed is determined in combination with pre-calibrated water pump efficiency performance data and converted into a frequency converter frequency instruction, a water pump is driven according to the instruction, an outlet electric valve is adjusted to track the target flow, and power, pressure and flow are continuously monitored during operation; combining the target spraying flow and the water pump efficiency performance data to judge whether the current operation state deviates from the efficient interval or not, re-determining the optimal rotating speed and the corresponding frequency converter output frequency instruction during deviation, and when it is continuously judged that spraying is not needed, reducing the output frequency of the frequency converter according to a set curve, closing the outlet main valve and releasing the residual pressure of the pipeline.

The invention discloses a typical meteorological year data generation method and equipment for building overheating evaluation, and relates to the technical field of building comprehensive energy and intelligent control. The method comprises the steps that long-term meteorological data are acquired, and the long-term meteorological data at least comprise data related to outdoor parameters of the following items; dry-bulb temperature, relative humidity, wind speed and global solar radiation; based on the long-term meteorological data, overheat simulation in a free operation mode is conducted on the target building through a building energy simulation tool, so that indoor temperature data are obtained; calculating a correlation coefficient of each outdoor parameter in the indoor temperature data and the long-term meteorological data; based on the correlation coefficient, distributing a dynamic weight for each outdoor parameter; and generating typical meteorological year data and typical month selection based on the dynamic weight of each outdoor parameter. According to the invention, precision and target guidance of typical meteorological year data are realized.

The application relates to a control method of a container data center cooling system, which comprises the following steps: S1, detecting internal air supply temperature Ts, internal return air temperature Tr, external wet bulb temperature Tw and external dry bulb temperature Tg in real time; S2, judging the comparison result of Ts and set container internal air supply temperature T1; if Ts >= T1, the refrigeration system is started, and step S3 is entered; if Ts < T1, the refrigeration system is on standby, and the present situation is maintained; S3, if Tw >= Tr-&T, a compressor refrigeration operation mode is started, a temperature difference ratio beta is continuously calculated by (Ts-T1) / alpha T, the compressor is controlled by PID load addition and subtraction according to the value of the temperature difference ratio beta, and step S3.1 is entered; if Tw < Tr-&T, a natural cold refrigeration operation mode is started, a temperature difference ratio beta is continuously calculated by (Ts-T1) / alpha T, and step S3.2 is entered. The method can intelligently switch and combine the compressor refrigeration operation mode, the natural cold refrigeration operation mode and the combined cooling operation mode according to the real-time detected data, can meet the refrigeration demand, and can greatly save energy consumption.

This application discloses a fresh air control method and system with a throttling heat exchange core, belonging to the field of air conditioning. The method includes: acquiring outdoor environmental parameters, indoor environmental parameters, and a user-set target supply air temperature; calculating the indoor-outdoor enthalpy difference, determining whether it exceeds a first threshold and whether the outdoor dry-bulb temperature is greater than the target supply air temperature; if so, entering an active throttling cooling mode: starting a high-pressure variable frequency fan to construct a high-pressure flow field of 1500-3000 Pa; fresh air sequentially flowing through a high-pressure stabilizing chamber and a micro-throttling array, calculating the required pressure drop based on the target supply air temperature and the outdoor dry-bulb temperature, adjusting the opening of the micro-throttling array, and using the Joule-Thomson effect to cool the fresh air; sending the cooled fresh air into a heat exchange core for heat exchange with indoor exhaust air, the heat exchange diaphragm of which is made of modified sulfonated polyetheretherketone material; finally, delivering the treated fresh air indoors. This application improves the fresh air handling capacity and system energy efficiency under extreme operating conditions.