385 results about "Cooling water temperature" patented technology

The invention provides an intelligent toy injection molding process optimization method which comprises the following steps: aiming at a key temperature control area, calculating an optimized cooling time value and a cooling water temperature set value through a correlation model of thermodynamic attribute parameters of toy materials, cooling time and cooling water temperature, and issuing the cooling time value and the cooling water temperature set value to an injection molding machine control system, meanwhile, according to the temperature fluctuation amplitude of the key area, the forming pressure value is finely adjusted, so that the temperature fluctuation of the key area is reduced; in the injection molding process, temperature data of multiple positions on the surface of the mold are collected in real time and transmitted to the central processing unit, the central processing unit conducts filtering and denoising on the collected temperature data and then judges whether the temperature data exceed the optimized temperature control range or not, if yes, an alarm mechanism is triggered, and meanwhile operation parameters of the injection molding machine are automatically adjusted. And the time for deviating from the temperature control range is shortened to the minimum.

The invention discloses a hydration heat monitoring and dynamic regulation and control method and system in a mass concrete pouring process, and relates to the technical field of concrete pouring, and the method comprises the steps: pre-burying a plurality of dual-mode temperature measurement probes in concrete, collecting dual-mode temperature field data in the concrete in real time, and synchronously collecting environmental parameters; carrying out preprocessing, dynamic weight distribution and data fusion on the obtained dual-mode temperature field data; according to the unsteady state heat transfer equation and the hydration heat model, a finite element heat conduction model is constructed, and the total hydration heat and the temperature difference trend are inverted through actually measured temperature field data; predicting a concrete core and surface temperature difference and a surface and environment temperature difference in a future set time period by combining an LSTM neural network model; and according to the predicted temperature difference result, the cooling water flow rate and the cooling water temperature are subjected to closed-loop regulation. Through the combination of dual-mode sensor temperature measurement and heat inversion, the hydration heat temperature difference in the concrete can be predicted in advance, a cooling scheme is regulated and controlled in real time in a linkage mode, and temperature stress cracks are avoided.

The invention relates to the technical field of temperature control, in particular to a mass concrete water cooling water temperature control method and system. The method comprises the following steps: collecting concrete key parameters through a multi-source sensor, constructing a microenvironment model based on information geometry, and generating a thermosensitive characteristic spectrum; forming a distributed thermodynamic model by utilizing a mutual information routing algorithm and heat-fluid-solid coupling analysis, and calculating an optimal cooling strategy; water flow path and flow optimization is realized in combination with fractional order particle swarm optimization; a pump set and a valve are adjusted through fuzzy self-adaptive control; and a potential instability region is identified through the spectrum energy gradient, and risk early warning is triggered. The precision and reliability of mass concrete cooling temperature control are remarkably improved, and intelligent, efficient and safe temperature control adjustment in the whole process is achieved.

The invention belongs to the technical field of ship bearings, and particularly relates to a ship bearing radial loading test bench and method for simulating ice load and water immersion working conditions, and the method comprises the steps: installing a to-be-tested intermediate bearing on a test platform, enabling the intermediate bearing to sleeve a test shaft, starting a cooling water circulation system to control the flow, cooling water enters a cooling water coil pipe to establish oil pool cooling circulation; a driving motor is started; a test shaft stably operates through equipment such as a reduction gearbox and the like; a dynamic pressure lubrication state is established, a radial dynamic load or a stable constant load is applied through a hydraulic loading system to simulate an icebreaking load working condition, and a simulated water body is injected into a water tank; the test conditions of the intermediate bearing in a ship immersion environment are constructed through water pressure adjustment, the temperatures of lubricating oil, a bearing bush and cooling water are monitored in real time, the loading force is adjusted through feedback data, and the performance of the intermediate bearing is judged after the test is finished. The problems that ice excitation and soaking environment simulation are insufficient and a loading structure is eccentric in the prior art are solved, and high-precision cooling and thermal stability evaluation are achieved.

The invention provides a seawater cooling control system and method which are applied to the technical field of ocean engineering, and the seawater cooling control system comprises a cooling water well, a first temperature sensor, a water level gauge, a water suction pump, a water delivery pump, a monitoring buoy, a second temperature sensor, a flow meter and a controller. The first temperature sensor and the second temperature sensor monitor the temperature in the well and the coral reef area and the water flow speed of the flow velocity metering area respectively, the water level gauge ensures that the water volume in the well is stable, and data are analyzed in real time through the controller to generate a control instruction. The difference value between the environment temperature and the whitening threshold value, the cooling water temperature in the well and the coral reef flow speed serve as input variables, the flow requirement of the water delivery pump is dynamically calculated through a preset rule base, and self-adaptive adjustment is achieved. Through cooperative feedback of the double temperature sensors, it is ensured that the water delivery temperature is strictly controlled within a coral tolerance threshold value, and heat stress whitening is avoided. Layered water taking is combined with a fuzzy control algorithm, energy consumption is reduced compared with a traditional deepwater extraction scheme, and negative effects of shading measures on zooxanthellae are avoided.

The invention provides a wind-water linkage energy-saving control system for an urban rail transit underground station. The wind-water linkage energy-saving control system comprises a management layer; the control layer is divided into three relatively independent and expandable cooperative control subsystems capable of independently acquiring information according to the type of equipment, the control layer comprises a large system cooperative control subsystem, a small system cooperative control subsystem and a water system cooperative control subsystem, and the cooperative control among the cooperative control subsystems is completed by the management layer platform; a control strategy of the urban rail transit underground station wind-water linkage energy-saving control system comprises a system calendar scheduling strategy; a system control strategy; comprising a large system air conditioner adding strategy, a large system air conditioner reducing strategy, a water system starting working condition setting strategy, a water system operation working condition switching strategy, a cooling water temperature difference optimization setting strategy, a chilled water temperature difference optimization setting strategy, a most unfavorable tail end pressure difference setting strategy, a most unfavorable tail end pressure difference control strategy and a water chilling unit adding strategy. A water chilling unit reduction strategy, a water chilling unit alternation strategy and a water chilling unit operation load balancing strategy; and the system cooperative control comprises one-key startup of the water chilling machine room, one-key shutdown of the water chilling machine room, one-key startup of the water chilling unit, one-key shutdown of the water chilling unit, automatic addition of the water chilling unit and automatic reduction of the water chilling unit.

The invention provides a multi-source situation fused fuel cell test method, which comprises the following steps of: establishing target working condition parameters by controlling a hydrogen supply unit, an air supply unit and a cooling water unit, and collecting corresponding sensor data in real time; a plurality of types of sensors for hydrogen concentration, temperature and humidity, air quality, cooling water temperature, experimental environment and the like are arranged in a fuel cell testing system, data of the sensors are input into a control unit after being subjected to time synchronization and normalization processing, and weight factors of the sensors are dynamically adjusted in different testing stages; and the control unit performs weighted fusion on the multi-source state information, constructs a comprehensive situation index, performs trend analysis on a future state in combination with a time sequence prediction model, and judges that the system is in a normal, early warning or dangerous state. According to the method, multi-source data fusion and prediction can be realized in the fuel cell test process, and the test safety and the intelligent level are effectively improved.

The invention relates to the technical field of waste heat recovery and comprehensive utilization, in particular to an air compressor waste heat recovery cooling and heating load control method and system and a storage medium. According to the temperature data, the heat pump load is adjusted; obtaining a cooling water temperature trend of the air compressor; according to the air compressor cooling water temperature trend, whether the air compressor cooling water temperature exceeds an early warning value and continues to rise or not is judged; when it is judged that the temperature of the cooling water of the air compressor exceeds the early warning value and continues to rise, the opening degree of a three-way valve is adjusted according to the trend of the temperature of the cooling water of the air compressor; and adjusting the rotating speed of a cooling tower fan according to the temperature trend of the cooling water of the air compressor. Through cooperative regulation and control of the heat pump and the cooling tower, it can be ensured that the temperature of the cooling water is always stabilized in the optimal working interval, and the waste heat utilization rate is maximized on the premise that the operation stability of the air compressor system is guaranteed.

The present invention discloses an all-terrain vehicle and its engine. The engine includes: a cylinder provided with an exhaust port and a first cooling channel; a crankcase disposed below the cylinder, the top of the crankcase being spaced a predetermined distance from the exhaust port, the crankcase including a second cooling channel communicating with the first cooling channel; a water pump disposed on one side of the crankcase; a cylinder inlet pipe, one end of the cylinder inlet pipe being connected to the water pump, the cylinder inlet pipe being fixedly attached to the top of the crankcase and spaced apart from the cylinder, and the other end of the cylinder inlet pipe communicating with the second cooling channel. Thus, the cylinder inlet pipe and the exhaust pipe can be effectively spaced apart further, so that the high-temperature exhaust pipe can be prevented from affecting the low-temperature cylinder inlet pipe, the cooling water temperature of the cylinder inlet pipe can be effectively reduced, the working reliability of the engine can be ensured, and the fuel efficiency of the engine can be improved.

The invention discloses a ceramic electrostatic chuck for etching processing. The ceramic electrostatic chuck for etching processing comprises a ceramic electrostatic chuck body, and a double-volute pipeline assembly and a cold water circulation system are arranged in a substrate of the ceramic electrostatic chuck body; in order to solve the problem that in the prior art, when a common circulating water cooling system cools an electrostatic chuck, cooling is not uniform, through the double-volute structure of the double-volute pipeline assembly, cooling water in one volute pipeline flows from the periphery to the center, and cooling water in the other volute pipeline flows from the center to the periphery; and through convection arrangement of the double-volute pipelines, it is guaranteed that the electrostatic chuck is cooled more uniformly, the problem that cooling is not uniform due to the fact that cooling water in a single flow channel is gradually heated is solved, and the problem that after a common circulating water cooling structure works for a long time, due to temperature change of the cooling water, cooling of the electrostatic chuck is changed is further solved.

To calculate an in-cylinder gas temperature at each time point in a compression process of a reciprocating internal combustion engine.SOLUTION: A temperature Tinit of newly suctioned gas is calculated based on a linear combination equation consisting of an intake gas temperature Tbin in an intake manifold, a cooling water temperature Twater, a specific power kPW, and constant terms: Tinit=C1×Tbin+C2×Twater+C3×kPW+C4, C1, C2, C3, C4: constants. A gas temperature Tivc in the cylinder when an intake valve closes is calculated based on the new gas temperature Tinit, and the residual gas temperature Tegrin from the previous cycle. A gas temperature Tca in the cylinder at each time point during a compression process is calculated based on the gas temperature Tivc in the cylinder when the intake valve closes, and a crank angle ca.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of refrigeration equipment control, and discloses an energy-saving control method of a centrifugal water chilling unit. Cooperative adjustment of the rotating speed of a compressor and the opening degree of a guide vane is achieved by obtaining operation state parameters and environment state parameters of a water chilling unit in real time, dynamically predicting the surge boundary, calculating the operation safety margin and generating an energy-saving optimization control vector. The method comprises the following steps: firstly, acquiring operation parameters such as compressor rotating speed, guide vane opening, condenser pressure and evaporator pressure and environment parameters such as environment temperature and cooling water temperature, and accurately predicting a surge boundary based on a pressure ratio, an operation condition vector and an environment correction coefficient; then analyzing the surge boundary change trend and the running state fluctuation characteristics, and determining the safety margin; and main characteristic components of the operation state are further extracted through characteristic decomposition, energy saving and safety requirements are balanced in combination with a dynamic tradeoff factor, and an optimization control vector is generated. According to the invention, the surge risk can be effectively prevented while the energy consumption is reduced, and the system adapts to complex and changeable operating environments.

According to the ship power device cooling water temperature intelligent control system, the water temperature is monitored in real time through the temperature sensor arranged at the cooling water inlet, and the electric three-way flow regulating valve with the stepping motor is used for changing the mixing proportion of low temperature and bypass fresh water for control; a cooperative control framework is adopted; an upper-layer model prediction control module performs rolling time domain optimization based on a time-delay thermodynamic model which is identified and updated on line, and outputs a feedforward signal; and the lower-layer fuzzy self-adaptive PID controller dynamically adjusts parameters according to the temperature deviation and the change rate of the temperature deviation to generate compensation control quantity. And the two outputs are linearly superposed and then converted into a valve accurate action signal through the driving module. The cooperation method effectively fuses the feedforward optimization capability of the MPC and the strong robustness of the fuzzy PID to model mismatch and disturbance, significantly improves the control precision and stability of the water temperature of the main engine under the inertia and time-varying working conditions, reduces the equipment damage caused by temperature fluctuation, prolongs the service life of the main engine, and improves the navigation safety and the energy efficiency.

The utility model discloses a granulating device for PVC (polyvinyl chloride) sizing material processing, which belongs to the technical field of granulating and comprises an extruder, a water tank support arranged on the rear side of the extruder, a cooling water tank fixedly mounted at the upper end of the water tank support, a driving motor fixedly mounted on the outer wall of the cooling water tank, and a turbulent flow component mounted in the cooling water tank. The turbulent flow assembly is fixedly connected with an output shaft of the driving motor, the turbulent flow assembly is composed of a reciprocating turbulent flow device and two rotary turbulent flow devices, the two rotary turbulent flow devices are fixedly installed at the two ends of the reciprocating turbulent flow device respectively, and by arranging the turbulent flow assembly and the driving motor, water in the cooling water tank can be disturbed and mixed; therefore, convective heat exchange of the cooling water in the cooling water tank is enhanced, the temperature distribution of the cooling water in the cooling water tank is more uniform, the temperature gradient is reduced, the speed of transferring heat from the extruded adhesive tape to the cooling water can be further improved, and finally the cooling efficiency of the extruded adhesive tape can be improved.

The invention provides a junction temperature estimation method and device of a power module, a motor controller and a medium. The junction temperature method comprises the following steps: determining a first state parameter when cooling water enters a power module of the motor controller; wherein the first state parameter comprises cooling water flow and cooling water temperature; determining a first coefficient according to the first state parameter; wherein the first coefficient represents a change relationship between a first temperature currently collected by a temperature sensor of the power module and a current junction temperature of the power module; and estimating the current junction temperature of the power module according to the first coefficient, the cooling water temperature and the first temperature.

The invention discloses a vertical sand mill, and relates to the technical field of sand mills, the vertical sand mill comprises an equipment main body, a grinding bin, a main shaft and a driving device used for driving the main shaft to rotate, a plurality of groups of grinding discs are uniformly mounted outside the main shaft in the length direction, and an annular water guide bin used for cooling the interior of the grinding bin is arranged on the inner wall of the grinding bin. Through cooperation of the annular water guide bin and the heat dissipation mechanism, a stable and ordered flowing path is formed by cooling water in the inner periphery of the main shaft and in the grinding bin, it is guaranteed that the cooling water can comprehensively and continuously absorb heat generated in the grinding process through the flowing path, the local overheating phenomenon is effectively prevented, and the service life of the grinding machine is prolonged. Through a heat dissipation mode of combining air cooling and water cooling, when high-temperature cooling water passes through the water guide pipe, strong heat exchange is formed between the high-temperature cooling water and external cold air, the temperature of the cooling water is effectively reduced, heat is prevented from being transmitted to a subsequent cooling link, and therefore the stability and reliability of the grinding process are guaranteed.

The invention belongs to the technical field of special-shaped plug connectors, and discloses an injection molding method of a special-shaped plug connector, which comprises the following steps: selecting plastic raw materials of the special-shaped plug connector: the plastic raw materials comprise a base material, a reinforcing material, a plasticizer and a light stabilizer, the base material is polystyrene, the reinforcing material is glass fiber and carbon fiber, the plasticizer is a cycloolefin plasticizer, and the light stabilizer is a light stabilizer; the injection molding machine is filled with the plastic raw materials for melting, and the mold is designed to be the round water gap and arranged at the flowing position of the plastic through the cooperation of the round water gap, the exhaust channel, the pneumatic core-pulling mechanism and the demolding inclination, so that the appearance of a molded product is prevented from being influenced; the pneumatic core-pulling mechanism comprises an air cylinder, a piston, an air pipe and a valve, the temperature of cooling water of the injection mold is 20-30 DEG C, a pouring gate is a hot runner pouring gate, accumulation of cold materials can be reduced, waste can be reduced, the production efficiency is improved, the demolding inclination is 1-3 degrees, and mold clamping and damage of products are avoided.

The present invention discloses a method and system for controlling cracks in large-volume concrete, wherein the method comprises: obtaining dimensional information of the large-volume concrete; determining the distribution position of heat dissipation steel pipes corresponding to the large-volume concrete based on the dimensional information of the large-volume concrete and a preset construction method; placing the heat dissipation steel pipes at the distribution position corresponding to the large-volume concrete, and connecting cooling water to cool the interior of the large-volume concrete. The present invention uses a preset pressure sensor to obtain the pressure value of the heat dissipation steel pipe in real time, thereby improving the bond strength between the large-volume concrete and the heat dissipation steel pipe; then, using a preset temperature sensor to obtain the temperature value of the cooling water, the internal temperature value of the large-volume concrete, and the surface temperature value in real time, thereby improving the heat dissipation accuracy of the large-volume concrete, thereby controlling the deformation of the large-volume concrete during the heat dissipation process, and further effectively controlling cracks in the large-volume concrete.

The invention discloses a front feedback control long material precise cold control facility and a control method. The cold control facility comprises a cooling water inlet flow meter assembly, a membrane valve opening degree pneumatic power assembly, a cooling water flow adjusting valve set, a cooling water pressure measuring assembly, a cooling water temperature measuring assembly, a pneumatic stop valve power assembly, a cooling water pneumatic stop valve set, a pressure maintaining pneumatic stop valve set and a reverse blowing water pneumatic stop valve set. The device comprises a back-blowing compressed air valve group, a pressure-maintaining overflow water flowmeter assembly, a pressure-maintaining overflow valve assembly, a back-blowing air nozzle assembly, a back-blowing water nozzle assembly, a cooling water nozzle assembly, a rolled piece inlet temperature measurement assembly and a rolled piece outlet temperature measurement assembly. The rolling units are subjected to finite division, the neural network method is adopted to analyze the collected big data of the finite units and the boundary influence factors, the influence of the boundary influence factors on the temperature in the rolling process is accurately recognized, the accuracy of temperature control is effectively improved, the yield is improved, and the production cost is effectively reduced.

The invention discloses a fuel injection method and device of an engine, a vehicle and a storage medium, a cylinder cover of the engine is provided with a fuel injector, a glow plug is arranged below an air inlet channel, the fuel injector is configured to inject fuel into a combustion chamber of the engine, and the glow plug is configured to heat the combustion chamber of the engine. The method comprises the steps that under the condition that an engine starting instruction is received, the cooling water temperature of an engine is obtained; under the condition that the temperature of the cooling water is smaller than or equal to a first preset temperature threshold value, the glow plug is controlled for heating; and under the condition that the temperature of the glow plug reaches the second preset temperature threshold value, the motor of the vehicle is controlled to drag the engine to rotate at the preset rotating speed, and the fuel injector is controlled to conduct single-time injection into the combustion chamber in the later period of the compression stroke. According to the fuel injection method, the problem that single-fuel cold start of the methanol engine is difficult in cold weather can be solved, the success rate of cold start of the engine is increased, and the cost can be reduced.

The utility model relates to an efficient water-cooling wire-drawing asphalt anti-rut agent forming device, and aims to solve the technical problem that the cooling and shaping quality of an anti-rut agent penetrating through the interior of a current cooling water tank is not enough due to the fact that the temperature in the current cooling water tank rises, and four groups of hollow frames are vertically and fixedly mounted on the surfaces of the two ends of the inner side of a tank body; a two-way screw rod is vertically and rotationally installed on the inner side of each hollow frame through a bearing, transmission sleeves are movably connected to the surfaces of the two ends of the outer side of each two-way screw rod in a sleeving mode through threads, a first connecting block and a second connecting block are fixed to the side edges of every two sets of transmission sleeves correspondingly, and the second connecting blocks are located below the first connecting blocks; according to the anti-rut agent cooling box, the moving distance and the cooling distance of a strip-shaped anti-rut agent in the box body can be prolonged, so that the contact time of the anti-rut agent and cooling water in the box body is prolonged, the cooling quality of the anti-rut agent is improved, and the situation that the cooling shaping quality of the anti-rut agent is affected due to temperature rise of the cooling water is avoided.

The utility model provides a cable cover cooling device and a pre-cooling structure, comprising a pre-cooling assembly 1, a pre-cooling box 1 used for realizing air cooling pre-cooling is arranged in the pre-cooling assembly 1, and the right side of the pre-cooling box 1 is fixedly connected with a pre-cooling box 2. Compared with the prior art, the beneficial effects of the utility model are that the pre-cooling assembly I and the pre-cooling assembly II are added, the pre-cooling assembly I and the pre-cooling assembly II are arranged in a left-right manner, and the cable is subjected to wind power guiding and supplying action in a circumferential manner through the three groups of annular air cooling grooves, so that uniform wind cooling action is uniformly performed on the cable; according to the cable cooling device, the cable is arranged in the cooling tank and is pre-cooled for the second time through the cooling water atomized by the atomizing nozzle, then the cable is arranged in the cooling tank to be cooled for the third time, and the four groups of corner water pipes are arranged at four corners to form water flow to reduce the temperature difference of the cooling water, so that the cooling uniformity can be improved; therefore, waste heat can be recycled for auxiliary heat preservation.

The invention discloses an algae removal control method and system for a cooling water system of a cooling unit, and the method comprises the steps: calculating a reference dosing duration according to the total water capacity of the system, a preset target agent concentration and the dosing rate of dosing equipment; the actual load, the cooling water temperature and the environment temperature of the cooling unit are collected in real time; according to the actual load and the cooling water temperature, whether the dosing condition is met currently is judged; and after it is judged that the dosing conditions are met, based on a pre-constructed calculation model, the corrected dosing duration under the current working condition is obtained through calculation with the reference dosing duration, the actual load rate of the cooling unit, the temperature correction coefficient corresponding to the cooling water temperature degree and the environment correction coefficient corresponding to the environment temperature as calculation parameters. According to the method, a multi-parameter coupling calculation mode is adopted, so that the corrected dosing duration can closely follow the fluctuation of actual working conditions, the stability of the algae removal effect is ensured, and biological slime adhesion and heat exchange efficiency reduction caused by insufficient chemicals are effectively prevented.

The present invention discloses a fault-tolerant control method, system, and distributed control system for external cooling water temperature in the field of external cooling water temperature control technology. The external cooling water system is used to cool a heat source, and the external cooling water system includes a cooling tower equipped with a cooling fan; external cooling water enters the heat source from the cooling tower water collection tank, and the external cooling water cools the heat source and becomes hot water, which then enters the cooling tower water collection tank again after being cooled by the cooling tower equipped with a cooling fan; at least two external cooling water temperature measurement points are set in the external cooling water inlet pipe of each heat source; the method includes: screening the inlet water temperature values ​​detected by each external cooling water temperature measurement point of each heat source, and calculating the average inlet water temperature of each heat source; when the average inlet water temperature of at least two heat sources is greater than the high set value of the external cooling water temperature, issuing a cooling fan start-up command. The present invention can effectively control the external cooling water temperature, keep the external cooling water temperature stable, and avoid overheating and damage to the heat source equipment caused by the loss of control of the external cooling water temperature.

The embodiment of the utility model provides a kind of water cooling system and laser direct imaging equipment, it is related to laser direct imaging equipment technical field.The water cooling system of laser direct imaging equipment includes water cooling machine, water cooling part and temperature regulating device.Water outlet main pipe and water inlet main pipe are connected on water cooling machine.Multiple water cooling parts are respectively installed on multiple heat-generating parts.Water cooling part is communicated with water outlet main pipe by first branch pipe.Water cooling part is also communicated with water inlet main pipe by second branch pipe.Temperature regulating device is installed on water cooling part.Temperature regulating device is used to adjust the temperature of cooling water into water cooling part.The utility model can adopt a set of water cooling machine to carry out accurate temperature control to multiple heat-generating components in laser direct imaging equipment simultaneously, improve equipment stability, without multiple water cooling machine equipment, reduce equipment cost.

This invention belongs to the technical field of laser chiller control methods, and particularly relates to a laser chiller control temperature difference adaptive correction method. It includes the following steps: detecting laser operating parameters based on the flow rate-temperature difference method and calculating waste heat; based on the calculated waste heat, detecting the waste heat at the start of each laser operating cycle and plotting a waste heat change curve over time; selecting a heat balance line based on the change curve and calculating the control temperature difference; and adjusting the chiller's cooling capacity. This laser chiller control temperature difference adaptive correction method optimizes the chiller's cooling capacity output by using the laser's waste heat change as a condition, thereby optimizing the cooling water temperature circulation. It utilizes the cooling water's cooling capacity circulation to achieve water temperature balance optimization, reduce water temperature fluctuations, and determine the control temperature difference. This solution is simple, efficient, and highly practical, and can improve problems such as the mismatch between refrigeration and cooling demands in traditional chillers, thus improving system efficiency.

To suppress an excessive temperature rise of a motor or an inverter caused by temperature rise d-axis control.SOLUTION: A drive apparatus comprises: a motor; an inverter which drives the motor; a power storage device which is connected to the inverter via a power line; a cooling device which circulates cooling water in a circulation passage including the motor, the inverter and the power storage device; and a control device which controls the inverter and the cooling device. When executing temperature rise d-axis control for controlling the inverter in such a manner that a d-axis current flows only to the motor together with actuation of the cooling device in response to a temperature rise request of the power storage device, in a case where a temperature of the cooling water is lower than a first temperature threshold, the control device controls the inverter so as to reduce the d-axis current flowing to the motor in relative to a case where the temperature of the cooling water is equal to or higher than the first temperature threshold.SELECTED DRAWING: Figure 4

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.

Provided are a method for predicting output power of a battery and a battery system providing the same, the system including: a battery including a plurality of battery modules each including a plurality of battery cells; and a main control circuit determining a representative temperature corresponding to a battery temperature based on a plurality of module temperatures which are respective temperatures of the plurality of battery modules, a cooling water temperature which is a temperature of cooling water flowing between the plurality of battery modules, and an air temperature, and predicting an output power value of the battery based on a state of charge SOC of the battery that is determined based on the determined representative temperature and a predetermined reference.

The present application relates to polyvinyl chloride cable material processing equipment technical field, and disclose a kind of cooling device for polyvinyl chloride cable material processing, including cooling water tank, cooling water tank is internally provided with cooling water tank, the bottom of cooling water tank is fixedly connected with several support legs.The present application, rotating shaft rotation drives the adjustment frame reciprocating movement connected on reciprocating screw groove, at this time adjustment frame drives the moving wheel on adjustment shaft reciprocating movement along rotating shaft, moving wheel drives cable body fluctuation, such setting is advantageous to increase cable body and the cooling water contact of different regions, to speed up the cooling speed of cable body, on the other hand, cable body moves up and down is advantageous to drive the cooling water in the cooling water tank inside produce agitation, so that the cooling water temperature inside cooling water tank keeps balanced, so that cable body can be cooled by cooling water evenly, to improve the production quality of cable body.