67 results about "Wet-bulb temperature" patented technology

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 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 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.

The invention relates to the technical field of non-electrical variable control systems, in particular to an efficient spray drying process for plant extracts, which comprises the following steps: correcting wet bulb temperature according to real-time atomization pressure of a tower top, determining a real-time wet bulb temperature correction value, determining a real-time tower top temperature difference value in combination with an initial Tg value, and performing spray drying on the plant extracts according to the real-time tower top temperature difference value. The system is used for implementing closed-loop control on the inlet air temperature of a tower top constant-speed drying area, determining the real-time water content in a tower according to the difference between a real-time material actually-measured water content detection value and a water content speculative value, obtaining a real-time Tg value corresponding to the water content in the tower, determining a real-time temperature difference value of a speed-reduction curing area by combining the real-time material temperature of the speed-reduction curing area, and controlling the temperature of the tower top constant-speed drying area according to the real-time temperature difference value. The method is used for carrying out closed-loop control on the inlet air temperature of a tower-bottom speed reduction curing area in the middle of the tower. Through self-adaptive control of the efficient spray drying process, the production stability is high, the energy consumption is lower, and the product quality is improved.

This application belongs to the field of power system disaster prevention technology, and provides a method, device, electronic equipment, and storage medium for predicting icing areas. The method includes: acquiring atmospheric reanalysis datasets, site observation datasets, and terrain elevation datasets; preprocessing and filtering icing elements in the above data to obtain data based on freezing rain and climate fusion datasets, terrain feature tensors, and icing element data; inputting the obtained data into a pre-trained terrain adaptive convolutional network Monte Carlo random deactivation model, outputting the average probability of freezing rain and the standard deviation of uncertainty; inputting the average probability of freezing rain, the standard deviation of uncertainty, 10-meter high wind speed, wet-bulb temperature, supercooled precipitation, preset time step, icing density, and conductor equivalent radius into a Makkonen calibration model, outputting the predicted icing thickness; determining the predicted icing area based on a preset region, the predicted icing thickness, and preset conditions; thus improving the prediction accuracy of icing thickness and icing area.

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 present application relates to cooling tower technical field, specifically disclose a water-saving cooling tower with strong heat exchange effect, including parallelly arranged water collecting disc at the bottom, finned tube heat exchanger installed on the top of the water collecting disc, wet cooling section cooler connected to the finned tube heat exchanger for heat exchange, and one or more cooling fan and spray water distribution pipe laid on the wet cooling section cooler; The present application is mainly used for air conditioning unit, its structure can reduce the air wet bulb temperature into the tower, so as to obtain lower outlet water temperature, improve the efficiency of air conditioning unit; At the same time, in winter, it can run in air cooling mode, and there is no evaporation loss in the whole tower; Compared with the traditional dry and wet cooling tower, the cooling tower has the effect of winter stopping spraying and saving water, the finned tube is arranged outside the air inlet face coaming, and only exchanges heat with dry ambient air during the heat exchange process, so that the finned tube is not corroded, and the service life of the cooling tower is improved.

The invention relates to the technical field of magnetic suspension phase change air conditioners, in particular to a load matching control method for an evaporative cooling magnetic suspension phase change air conditioner, which comprises the following steps: acquiring outdoor wet bulb temperature and system refrigeration load, and comparing with a preset threshold to start different working modes; whether refrigeration output is matched with the requirement or not is judged by comparing the actual temperature with a temperature threshold value in different working modes; if not, calculating the initial adjusting quantity of the key component according to the temperature difference; the current of the key component is sampled in real time, the mutation rate is calculated and compared with a threshold value, the initial adjusting quantity is corrected according to a comparison result, and therefore adjustment and control over all the components are completed. According to the method, multi-dimensional fusion and self-adaptive matching of the load demand, the environmental condition and the equipment state are realized, and the operation risk caused by too fast adjustment or equipment abnormity is effectively avoided while the energy efficiency of the system is improved.

According to the R134a evaporative condenser with the precooling function, the surface air cooler, the condensing coil and the air cooling finned tube condenser are sequentially arranged on the air flow path, and the cooling water circulation system is arranged, so that the condenser can be switched to operate among the first mode, the second mode and the third mode according to environmental conditions; the problem that the condensation efficiency of an evaporative condenser is limited by the environment wet bulb temperature is solved, inlet air can be pre-cooled in a third mode in high-temperature weather, the enthalpy value of air entering a condensation section is actively reduced, more favorable evaporative cooling conditions are created for a condensation coil, and therefore the cooling effect is prevented from being greatly reduced, and the equipment temperature is prevented from being increased. Air cooling can be started at dry low temperature, evaporative cooling can be started in transition seasons, precooling and evaporative cooling can be jointly started at high temperature and high humidity, the condenser can be matched with an operation strategy with the highest energy efficiency under different working conditions through the self-adaptive adjusting capacity, the problem of insufficient energy efficiency utilization is solved, and the operation efficiency and the energy-saving effect are improved.

The present application relates to heat mass exchange equipment detection technical field, disclose a kind of method and device for testing packing performance, method includes the following steps: adjusting system to run to dynamic heat balance state;Utilize air state detection mechanism to carry out physical mixing sampling to cross section air to obtain average dry-wet bulb temperature, and simultaneously collect inlet and outlet water temperature;Air is shaped after passing through flow equalizer, average dynamic pressure is collected through physically connected wind pressure detector and actual air mass flow is calculated;Based on the acquisition parameter, according to heat transfer mass transfer theory, the numerical integral is carried out to calculate packing performance test constant;Finally, through multi-working condition test and curve fitting, general performance characteristic equation is established.The present application effectively solves the measurement error problem caused by airflow distribution uneven by air physical mixing sampling and airflow homogenization pressure measurement, improves the accuracy of thermodynamic parameters and flow calculation, and the characteristic equation generated has higher engineering application value.

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 application relates to the cooling technical field, in particular to a high-efficiency counterflow cooling tower system which comprises a sub-wet bulb indirect evaporative cooling system, a variable-flow uniform water spraying system and a fan assembly. The sub-wet bulb indirect evaporative cooling system can realize that the outlet water temperature is lower than the ambient wet bulb temperature; the variable-flow uniform water spraying system can keep uniform water spraying under the variable-flow condition, the system further comprises a tower group uniform water distribution device and a double-pipeline switching device; the fan assembly is composed of multiple EC axial flow fans which are distributed in a matrix mode at the tower body air outlets, can provide uniform airflow and reduce energy consumption. The application can improve the cooling efficiency of the counterflow cooling tower, realize uniform water spraying and airflow distribution, reduce energy consumption, can make the outlet water temperature of the cooling tower lower, and makes the cooling tower run efficiently and energy-savingly in the full-flow range.

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 present application relates to magnetic levitation phase change air conditioning technical field, especially to a kind of load matching control method for evaporative cooling magnetic levitation phase change air conditioner, the method is by obtaining outdoor wet bulb temperature and system refrigeration load, compared with preset threshold to start different working mode;By the actual temperature under different working mode and temperature threshold comparison judges whether the refrigeration output matches the demand;If not match, then according to the temperature difference calculation initial adjustment amount of key components;Real-time sampling key component current, calculate mutation rate and compare with threshold, according to the comparison result to initial adjustment amount is modified, to complete the regulation of each component.The present application realizes the multi-dimensional fusion and self-adaptive matching of load demand, environmental conditions and equipment state, improves the energy efficiency of system, and effectively avoids the operation risk caused by adjusting too fast or equipment abnormality.

The application discloses an evaporative cooling and mechanical refrigeration combined refrigeration water chilling unit operation control method, which comprises the following steps: S1, setting an outdoor temperature detection instrument to monitor the outdoor temperature; S2, calculating the wet-bulb temperature according to the outdoor temperature; S3, controlling the valve of the unit according to the wet-bulb temperature and the water supply temperature by a control system; different combined schemes including a filler open type, a coil closed type and a coil+condenser closed type are adopted, the environmental temperature change is utilized, the best refrigeration mode and working mode are selected, and the energy consumption is maximally reduced; the application has the advantages that the energy consumption of the water chilling unit can be reduced, the energy efficiency is improved, the natural cold source is fully utilized, and the requirements of the double-carbon policy are met; and the application is suitable for various places, such as commercial buildings, industrial workshops and families, and has important significance for energy saving and emission reduction.

The utility model discloses a transverse flow cooling tower filler test device, which belongs to the technical field of cooling towers and comprises a shell formed by mutually communicating and combining an air bellow module and a tower body module. An air inlet of the air bellow module is open, and a butt joint is provided with a grating; a pitot tube anemograph and a second dry and wet bulb thermometer are arranged in the air bellow; a filler module, a water collecting basin, a water distribution module and a fan module are arranged in the tower body module; the filler module is mounted at a communication port of the air bellow module and the tower body module; the water collecting basin is positioned below the filler module and is used for collecting cooling water flowing down from the filler module; the water distribution module is positioned above the filling module and comprises a water distribution basin and a spray head; the draught fan module is located above the side edge of the filling module and comprises an air duct, a draught fan and a permanent magnet synchronous motor. And a first dry-wet bulb thermometer is arranged in the air duct. According to the utility model, actual working conditions can be simulated, the heat transfer performance of the filler can be accurately tested, and reliable data support is provided for the design and model selection of the cooling tower and the optimization of the filler.

A thermal insulation system and method for reducing water and energy usage is provided. The system includes an adiabatic heat rejection system including a temperature sensor configured to measure an ambient wet bulb temperature of the adiabatic system based on a measured temperature of water exiting the wetting media pad. A method for adjusting operating parameters of a system to minimize water and energy usage is provided. The method includes the steps of determining an approximate ambient wet bulb temperature of the adiabatic heat rejection system based on a measured temperature of water exiting the adiabatic mat, determining whether the measured temperature of the process fluid flow is above a process fluid temperature setpoint, determining whether the adiabatic heat rejection system is in a water saving mode of operation or an energy saving mode of operation, and adjusting one or more operating parameters based on the operating mode.

The application provides a data center cooling system, a data center cooling method and a computer device. The data center cooling system comprises: a first pipeline connected in series with a data center terminal and provided with a first control structure; a second pipeline connected in parallel with the first pipeline, the second pipeline being provided with the data center terminal in series and the second control structure; a first cooling assembly arranged on the first pipeline and comprising a buffer device and a heat exchanger, the buffer device being used for supplying refrigerant into the heat exchanger, and the heat exchanger being used for cooling the data center terminal; and a second cooling assembly arranged on the second pipeline and comprising a cold source, the cold source being used for cooling the data center terminal; the first pipeline and the second pipeline are selectively put into use, and when the temperature of the cold source is less than a wet bulb temperature critical value of the data center terminal, the second pipeline is controlled to be in a pass-through state and the first pipeline is controlled to be in an open-circuit state. The application solves the problem that the energy consumption is increased in the prior art cooling mode for the data center.

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 application relates to a cross-flow closed cooling tower which comprises a shell, a fan, a wet membrane, a first water distributor, a second water distributor, an evaporative cooling heat exchanger, a water collecting tray, a water storage tank, a water pump and a primary cooling unit. The fan is located at the top of the shell, the wet membrane is located right behind the air inlet of the shell, the evaporative cooling heat exchanger is located right behind the wet membrane, the first water distributor is located above the wet membrane to distribute circulating water to the wet membrane, the second water distributor is located above the evaporative cooling heat exchanger to distribute circulating water to the evaporative cooling heat exchanger, the water collecting tray collects the circulating water flowing from the wet membrane and the evaporative cooling heat exchanger and delivers the circulating water to the water storage tank. The closed cooling tower adopts the wet membrane plus plate exchange for primary cooling and the wet membrane plus cross-flow radial finned tube evaporative cooling heat exchanger for secondary cooling. The mode can greatly increase the evaporative heat transfer contact area, so that the cooled fluid and the wet bulb temperature can be more closely approximated, and the dew point temperature can be more closely approximated in the case of pre-cooling.

The application belongs to the technical field of fusion device auxiliary system control, and discloses a control method and device for a water cooling system of a fusion reactor auxiliary device and a storage medium, wherein the device water cooling system comprises a process cooling loop and a heat dissipation loop, the method comprises the following steps: obtaining a discharge plan of the fusion reactor; predicting the heat load and operation time of the device according to the discharge plan; determining the first target water pump of the process cooling loop, the first preset water pump of the heat dissipation loop and the preset cooling tower according to the heat load, and controlling the water pump and the cooling tower to be opened and closed according to the operation time; when the water pump and the cooling tower are both opened, obtaining the real-time heat load of the device and the real-time ambient wet-bulb temperature; after the system is stabilized, determining the first operation frequency of the first target water pump according to the most unfavorable terminal of the process cooling loop, determining the second operation frequency of the second target water pump and the third operation frequency of the target cooling tower in the heat dissipation loop according to the real-time heat load and the real-time ambient wet-bulb temperature; and then the frequencies are controlled respectively.

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.

A method for maintaining performance of a cooling tower includes obtaining cooling tower specification information including performance curves indicating a cooling performance of the cooling tower and generating a performance model. The method includes collecting real-time sensor data from the cooling tower, the real-time sensor data including an average inlet water temperature into a condenser and an average outlet water temperature out of the condenser. The method includes calculating a flow rate through the condenser and calculating an expected cold water temperature using the performance model based on (i) a difference between the average outlet water temperature and the average inlet water temperature, (ii) a wet bulb temperature, and (iii) the flow rate. The method includes comparing the expected cold water temperature to the average inlet water temperature to determine a cold water temperature difference, and determining whether the cooling tower requires maintenance based on a calculated production penalty.

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 relates to a wet-bulb-sensor-device (1) for a domestic oven (2), comprising at least the following components:—a in operation upwardly opened basin (3) for water (4), of which a water-level (5) is formed in operation; —a inlet-port (6) for water (4) for filling the basin (3); —a temperature-sensor (7) which in operation is partially immersed in the water (4) in the basin (3); —a controller (8) with a regulating-means (9) for setting in operation a predetermined height of a water-level (5). The wet-bulb-sensor-device (1) is particularly characterized in that, in operation, the inlet-port (6) is arranged in the earth-gravity-field (10) below the predetermined water-level (5). With the wet-bulb-sensor-device proposed herein a pressure-controlled constant water-level is achievable.

The present disclosure relates to a wet bulb temperature detection device and a cooling tower approach monitoring system, the wet bulb temperature detection device comprising a container, gauze and a thermometer; the container is used for storing liquid, the bottom end of the outer side wall of the container is provided with a thin tube, the thin tube is communicated with the container, so that the liquid in the container can flow into the thin tube, the end of the thin tube away from the container is upward, the gauze is placed in the thin tube, and part of the gauze is stretched out through the end of the thin tube away from the container and wraps the detection end of the thermometer, so that the thermometer can detect the wet bulb temperature. The wet bulb temperature detection device draws out the liquid by setting the thin tube on the outer side wall of the container, the contact area of the thin tube with the outside world is small, and the amount of liquid in the thin tube is also small, so that the evaporation speed of the liquid in the thin tube is slow, thereby greatly reducing the consumption speed of the liquid in the container, and the personnel does not need to frequently add water.