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1026 results about "Inlet temperature" patented technology

Inlet temperature. The temperature signal taken in the engine inlet to measure air density and sent to the fuel control unit as a fuel-scheduling parameter.

High-energy-density liquid cooling energy storage system based on thermal management optimization

The invention relates to the technical field of energy storage management, in particular to a high-energy-density liquid cooling energy storage system based on thermal management optimization, which comprises a thermal response calculation module, a thermal risk area identification module, a cooling resource allocation module, a thermal decoupling state judgment module and a charging and discharging power limiting module. According to the method, the inlet temperature, the outlet temperature and the cooling liquid flow speed of the high-energy-density energy storage equipment are obtained, the unit thermal load conversion rate is calculated, the unit thermal response deviation degree is determined, the thermal risk area higher than the standard limit is clearly recognized in the energy storage equipment, the corresponding liquid cooling channel is accurately selected, and the cooling liquid pulse flow frequency is optimized; the pertinence and timeliness of the cooling liquid in actual use are effectively improved, the local overheating hidden danger is avoided, the lag response is marked in time by monitoring the cooling liquid pressure difference and the temperature rise change in real time, the decoupling state between the cooling liquid and the thermal load is judged, the charge and discharge power dynamic reduction measure is implemented, and the trend of abnormal and continuous accumulation of the local thermal load is restrained.
Owner:JIANGSU YUANXIN ENERGY STORAGE TECH CO LTD

Adiabatic supercritical compressed carbon dioxide energy storage system

The invention relates to the technical field of supercritical compressed carbon dioxide energy storage, in particular to an adiabatic supercritical compressed carbon dioxide energy storage system. An expansion unit; during energy storage, the heat storage tank stores compression heat of the supercritical carbon dioxide in the high-temperature and high-pressure state, and the supercritical carbon dioxide in the high-temperature and high-pressure state is cooled to the temperature the same as that of the high-pressure gas storage chamber; during energy release, the heat storage tank heats the low-temperature high-pressure supercritical carbon dioxide discharged from the high-pressure gas storage chamber; the temperature control system adjusts the flow of the cooling medium in the second heat exchanger, controls the inlet temperature of the compressor and further adjusts the inlet temperature of each stage of expansion machine, it is guaranteed that the carbon dioxide temperature of the inlet position of each stage of expansion machine is not lower than the liquefaction critical temperature, and the large-area liquefaction phenomenon does not occur. According to the temperature control system, the phenomenon that in the prior art, when carbon dioxide is at low temperature, carbon dioxide is liquefied, and large-area condensation occurs in the expansion machine can be effectively overcome, and then the operation efficiency and the energy storage efficiency of the system are guaranteed.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

Thermal management system for an engine

A thermal management system includes a thermal circuit having a thermal transport bus with a thermal fluid flowing therethrough. The thermal transport bus includes first and second bus segments. First and second thermal loads are on the first and second bus segments, respectively, and have different first and second inlet temperature requirements. The thermal management system includes a plurality of heat exchangers in thermal communication with the first and second thermal loads. The heat exchangers include a first heat exchanger and one or more second heat exchangers. The first heat exchanger is on one of the first or second bus segments for rejecting heat to engine fuel. The thermal fluid is split between each of the first and second bus segments such that only a portion of the thermal fluid flows through the first heat exchanger to accommodate the different first and second inlet temperature requirements.
Owner:GENERAL ELECTRIC CO

Refrigerating system optimization method and device based on error correction

The invention belongs to the technical field of refrigeration control, and discloses a refrigeration system optimization method and device based on error correction, and the method comprises the steps: obtaining a target required cooling capacity and a current environment parameter, inputting an optimization model, and obtaining an optimal control parameter and prediction power; constructing a performance curve; the performance curve comprises a temperature refrigeration curve, a temperature correction curve and a load correction curve; inputting the optimal control parameters into the performance curve to obtain actual power; subtracting the actual power from the predicted power to obtain a power error value; judging whether the absolute value of the power error value is smaller than a preset error threshold; if yes, the refrigerating system is made to operate according to the optimal control parameters; and if not, the cooling water inlet temperature in the optimal control parameters is adjusted according to the power error value. According to the method and the device, the error of the optimal control parameter output by the optimization model can be corrected, and the refrigerating system can be ensured to operate at the optimal power energy consumption while the target required cooling capacity is met.
Owner:DONGGUAN DEER IND SERVICES

Thermal management subsystem of liquid-cooled fuel cell and control method of thermal management subsystem

The invention relates to the technical field of battery thermal management, in particular to a liquid-cooled fuel cell thermal management subsystem and a control method thereof.The liquid-cooled fuel cell thermal management subsystem comprises a fuel cell body, a cooling liquid circulation system, a temperature sensor, a flow sensor and a thermal management system controller; the heat management system controller is electrically connected with the temperature sensor, the flow sensor, the water pump, the radiator, the heater and the control valve, calculates the pile temperature of the fuel cell main body through load current, and continuously monitors the inlet temperature and the outlet temperature of the fuel cell main body and the outlet flow of the water pump at the same time; and the working state of the cooling liquid circulation system is controlled according to the monitored and calculated data, so that the temperature of the fuel cell main body is accurately controlled.
Owner:SHANGHAI KALU AUTOMATION TECH CO LTD

Condensation-free efficient heat exchange control method and system for full-premixing water heater

The invention discloses a condensation-free efficient heat exchange control method and system for a full-premixing water heater, and the method comprises the steps: collecting the multi-source information, such as air inlet temperature, humidity, gas flow, flue gas oxygen concentration and wall temperature, in real time, calculating a predicted dew point based on a dynamic dew point prediction model, and setting a dynamic safety boundary; the condensation risk is judged by comparing the wall temperature with the safety boundary, and active intervention is carried out in a staged cooperation mode that fuel gas and air volume are continuously adjusted firstly and then a partial combustion zone sectioning valve is rapidly turned off; the system comprises a main controller, a mesh-shaped infrared radiation burner, a sectional valve assembly, a gas proportional valve, a frequency conversion fan and related sensors. According to the invention, the system runs close to the condensation boundary through intelligent control, and the advantage of high operation heat efficiency is realized on the premise of ensuring high reliability.
Owner:ZHONGSHAN NORBIN THERMAL ENERGY TECH CO LTD

Constant temperature control method and device for hollow cooling screw rod

The invention discloses a constant temperature control method and device for a hollow cooling screw rod. The method comprises the steps that the inlet temperature and the outlet temperature of a cooling medium flowing through a hollow cooling lead screw are obtained according to a preset time interval; under the condition that the outlet temperature and the inlet temperature are different, the difference value between the outlet temperature and the inlet temperature is calculated, and a temperature difference value is obtained; the temperature difference value is processed through a flow velocity prediction model, and a flow velocity adjusting strategy for adjusting the flow velocity of the cooling medium is obtained; and adjusting the flow velocity of the cooling medium from the current flow velocity to the target flow velocity according to the flow velocity adjusting strategy to enable the outlet temperature and the inlet temperature to be the same. According to the invention, the technical problem that the precision requirement is difficult to meet when the temperature of the hollow screw rod is controlled by a traditional method due to the sensitivity of the hollow screw rod to the temperature in the prior art is solved.
Owner:ZHUHAI GREE INTELLIGENT EQUIP CO LTD +1

Intelligent control method and system for automobile air conditioner

The invention discloses an intelligent control method and system for an automobile air conditioner, and relates to the technical field of intelligent sensing control of air conditioners. The intelligent control method and system for the automobile air conditioner comprise the steps that S1, multi-source data are collected and preprocessed, and a standardized data set is constructed; s2, multi-path temperature difference coupling characteristics are evaluated based on the standardized data set, and the cold and hot air mixing proportion and the air door opening degree are dynamically adjusted; s3, the adjustment adaptability of the multi-source temperature difference and the air outlet speed is analyzed, and opening and closing of an air door and the air supply flow are adjusted; s4, evaluating the thermal response coordination and execution stability of the channels, and adjusting the proportion and control priority of the cold and hot channels; and S5, air door adjustment and response consistency is monitored, the airflow adjustment track is corrected, and mismatch response is analyzed. The problems that most current automobile air conditioning systems cannot dynamically adjust the mixed airflow proportion according to the air inlet temperature change, the evaporator outlet temperature difference and the air blowing opening real-time temperature gradient, so that frequent manual intervention of a user is caused, and comfort and energy efficiency are affected are solved.
Owner:WUXI VOCATIONAL INSTITUTE OF COMMERCE

Systems and methods utilizing gas temperature as a power source

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.
Owner:ICE THERMAL HARVESTING LLC

Automobile radiator performance test system and method

The invention provides an automobile radiator performance test system and method, and the method comprises the steps: fixing a to-be-tested radiator in a radiator clamp before testing; the first, second, third and fourth electric control water valve switches are sequentially connected, so that the cooling liquid circulates; when testing starts, the rotating speed of a water pump and the opening degree of a second electric control water valve switch are adjusted, and the resistance of a circulating waterway is adjusted to simulate different testing working conditions; a water inlet temperature value, a water outlet temperature value and a digital display flowmeter flow value are collected; inputting the temperature value of the water outlet and the flow value of the digital display flowmeter into a trained flow data correction model to obtain a corrected flow value; and based on the water inlet temperature value, the water outlet temperature value and the corrected flow value, calculating the heat dissipating capacity of the radiator under different test conditions. According to the invention, by introducing the rotating speed opening combination-waterway resistance relation model and the flow data correction model, the diversity and accuracy of the performance test of the radiator are improved on the basis of ensuring the universality of the test system.
Owner:ZHONGTONG BUS HLDG

Automatic control method for air introduction amount of dry quenching furnace

The invention discloses an automatic control method for the air introduction amount of a dry quenching furnace, and relates to the technical field of dry quenching, and the method comprises the following steps: collecting CO and H concentration distribution data and dust concentration gradient data in an annular flue of the dry quenching furnace, and boiler inlet temperature and circulating gas flow in real time; establishing a multi-parameter coupled dynamic prediction model, and predicting coke burn-out rates and boiler thermal efficiency under different air introduction amounts; an optimal air introduction amount threshold value is calculated through a model prediction control algorithm; on the basis of the optimal air introduction amount threshold value, the opening degree of an electric valve of an air introduction pipe is dynamically adjusted, meanwhile, displacement compensation of a servo mechanism at the position of an introduction opening in the annular flue is triggered, and an introduction point is made to be located in the optimization interval of the CO concentration, the Hconcentration and the dust concentration all the time; and a self-adaptive correction module is established, when it is detected that coke maturity is abnormal and coke discharge temperature fluctuation is abnormal, a compensation control mode based on deep reinforcement learning is automatically switched, and dynamic prediction model parameters are updated.
Owner:BEIJING ZHIYE INTERNET TECH CO LTD

Electric power converter, such as an electric motor drive for driving an electric motor and method for operating the electric motor drive

The invention is directed at an electric power converter, such as an electric motor drive for driving an electric motor. The converter includes a cooling system with a heat sink for dissipating thermal energy generated by the converter and with coolant flow means for cooling the heat sink, first measuring means for measuring the coolant inlet temperature, second measuring means for measuring the heat sink temperature, estimating means for estimating the thermal energy transferred to the heat sink, wherein the converter is provided for estimating the thermal resistance of the heat sink based on the measured temperatures and the estimated thermal energy transferred to the heat sink, for comparing the estimated thermal resistance to reference values and for outputting a signal, if the difference between the estimated thermal resistance and the reference values exceeds a threshold value. The invention is also directed at a method for operating the electric power converter.
Owner:VACON OY

Warming-up control method in starting process of fuel cell system and fuel cell system

The present application relates to a warming-up control method for a fuel cell system in a starting process and a fuel cell system, applied to the technical field of fuel cells. The method includes: starting the fuel cell system, turning on a small-cycle cooling circuit, and pull-loading an output power to a first power; in response to an inlet temperature of a stack reaching a first temperature, rotating a three-way valve at a first rotating rate; calculating a variance of a cell voltage value; in response to the variance being smaller than a third threshold and reducing the variance to be within the first threshold, returning to the rotating the three-way valve at the first rotating rate until all turn-on of a large-cycle cooling circuit and all turn-off of the small-cycle cooling circuit; pull-loading the output power to a rated power.
Owner:GUANGDONG YUNTAO HYDROGEN ENERGY TECH CO LTD

PID (Proportion Integration Differentiation) calibration control method and system based on engine hydraulic buffer control and energy-saving strategy

The invention relates to a PID calibration control method and system based on engine hydraulic buffer control and an energy-saving strategy, and relates to the technical field of vehicle control. The method comprises the steps that the real-time cooling liquid temperature and the real-time air inlet temperature are obtained through a cooling liquid temperature sensor and an air inlet temperature sensor correspondingly; according to the preset corresponding relation between the cooling liquid temperature and the fan rotating speed and the corresponding relation between the engine air inlet temperature and the fan rotating speed, first / second target rotating speeds corresponding to the real-time cooling liquid temperature and the real-time air inlet temperature are determined; based on the first target rotating speed and the second target rotating speed, the fan control basic rotating speed is determined, and the real-time temperature of the engine is determined based on the real-time cooling liquid temperature and the real-time air inlet temperature; and based on the preset engine target temperature, the engine real-time temperature and the fan control basic rotating speed, a preset PID control algorithm is executed so as to adjust the actual rotating speed of the engine cooling fan. By means of the method, control over the engine cooling fan can be more intelligent and accurate.
Owner:JIANGSU HEYI TECH CO LTD

Methanol preheating and catalytic cracking system for methanol engine, ship and control method

The invention provides a methanol preheating and catalytic cracking system for a methanol engine, a ship and a control method, and belongs to the technical field of ship methanol engines. The problems that an existing methanol engine is difficult in cold start and methanol gasification are solved. The system comprises a methanol engine, a methanol storage tank, a water storage tank, a heat exchanger, an inlet temperature sensor and an outlet temperature sensor, one passage of a third three-way valve is connected with the waste gas output end of the methanol engine, the other passage of the third three-way valve is connected with another cooling water pipeline, and the methanol output end of the heat exchanger is connected with the methanol input end of the methanol engine. The methanol input end is connected with the methanol storage tank, a methanol pump is arranged on a methanol conveying pipeline between the methanol storage tank and the heat exchanger, two passages of the first three-way valve are arranged between the methanol conveying pipelines, and the inlet temperature sensor and the outlet temperature sensor are respectively arranged at a methanol inlet and a methanol outlet of the heat exchanger. The method is mainly used for starting the methanol engine.
Owner:HARBIN ENG UNIV

Fuel cell air compressor flow self-adaptive control method and system

The invention relates to a fuel cell air compressor flow self-adaptive control method and system. The method comprises the steps that an air inlet temperature signal, an air outlet temperature signal, an air inlet pressure signal, an air outlet pressure signal, an air compressor rotating speed signal and an air compressor output flow signal of a fuel cell air compressor are collected, and an operation characteristic matrix is obtained through calculation; performing dead zone quantization on the operation characteristic matrix to generate an operation parameter matrix, and constructing a double-layer action evaluation network structure to perform operation state online evaluation to generate air compressor control evaluation parameters; establishing a state constraint function according to the air compressor control evaluation parameters, and calculating to obtain a stability constraint boundary of the fuel cell air compressor; and performing recursive optimization on the control parameters of the air compressor to obtain a rotating speed control sequence of the air compressor. According to the method, the quick response capability of the air compressor to the working condition change is enhanced, the complexity of control parameter setting is reduced, and the problems that in a traditional control method, parameter setting is time-consuming, and the control precision is low are effectively solved.
Owner:FUJIAN YIPUSI IND CO LTD

Control method, control device, air supply device and storage medium

The invention discloses a control method, a control device, an air supply device and a storage medium. The control method is used for the air supply device. The control method comprises the steps that historical calibration parameters and current calibration parameters of the air supply device are obtained, the historical calibration parameters comprise historical final-stage exhaust pressure, historical environment air pressure, historical environment temperature and historical inter-stage air inlet temperature, and the current calibration parameters comprise current environment air pressure, current environment temperature and current inter-stage air inlet temperature; the current surge rotating speed of the air supply device is calculated according to the historical calibration parameters and the current calibration parameters; and the current rotating speed of the air supply device is controlled to be larger than the current surge rotating speed. The current environment air pressure, the current environment temperature and the current inter-stage air inlet temperature are obtained and fused with the theoretical values to calculate the surge rotating speed, so that the calculated surge rotating speed can adapt to the current working environment of the air supply device, the precision of the surge rotating speed is high, and then the stability of the air supply device can be improved.
Owner:CHONGQING MIDEA GENERAL REFRIGERATING EQUIP CO LTD +1

Water heater

A water heater including a cabinet having an inlet, an outlet, and a flow path disposed between the inlet and the outlet and having a plurality of upper and lower junctions to redirect the flow path. Each lower junction includes a drain port. A flow rate sensor measures the flow rate of the fluid through the flow path, an inlet temperature sensor measures an inlet temperature, an and outlet temperature sensor measures the outlet temperature. Heating elements are disposed along the flow path between the inlet and outlet temperature sensors, and intermediate temperature sensors are disposed adjacent respective heating elements to measure an intermediate temperature within the flow path. A controller operates the heating elements to heat a fluid within the flow path to a predetermined set point temperature based on the measurements of the flow rate sensor and temperature sensors.
Owner:BRADFORD WHITE CORP

Heavy duty gas turbine control system

The invention provides a heavy duty gas turbine control system which comprises a signal conditioning module and a plurality of parameter control modules, and a rotating speed control module, a load control module, a temperature limit control module and an acceleration control module in the parameter control modules are all used for achieving closed-loop control according to the deviation between a set value and a corresponding observation value; the starting control module is used for acquiring a starting fuel quantity instruction through a designed control strategy; the IGV and VGVs control module obtains an IGV and VGVs angle instruction according to the turbine inlet temperature set value, the turbine outlet temperature set value and the deviation maximum value of the corresponding observation value; the fuel quantity control module obtains a total fuel quantity instruction based on a full working condition range fuel quantity control strategy; the fuel gas distribution control module is used for obtaining an opening degree instruction of each fuel valve according to the total fuel quantity instruction; the adaptability, the reliability and the usability of the control system in application scenes such as autonomous design and technical improvement are improved.
Owner:CHINA UNITED GAS TURBINE TECH CO LTD

Method and device for controlling thermal management of vehicle

The invention belongs to the field of vehicles, and discloses a thermal management control method and device for a vehicle. The method comprises the steps that current thermal management parameters of a target vehicle are obtained, and the current thermal management parameters comprise the current battery body temperature, the current battery water inlet temperature, the current engine cooling liquid temperature, the current environment temperature, the current charging mode and the current passenger compartment air conditioner on-off state; acquiring a current weight coefficient corresponding to the current thermal management parameter, and determining a current refrigeration mode of a power battery and a passenger compartment of the target vehicle according to the current thermal management parameter and the current weight coefficient; and according to the current refrigeration mode, a power battery and / or a passenger compartment of the target vehicle are / is refrigerated. By adopting the method, the corresponding refrigeration mode can be determined for refrigeration according to the current thermal management parameter of the target vehicle.
Owner:SAIC GM WULING AUTOMOBILE CO LTD

Combustion engine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and operation method

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD

Transformer temperature control method, device and equipment and storage medium

ActiveCN119512259AImprove temperature control efficiencyTemperatue controlTemperature controlTransformer
The invention discloses a transformer temperature control method and device, equipment and a storage medium. The method comprises the steps that the cooling oil inlet temperature and the cooling oil outlet temperature of a transformer at the current moment are obtained; according to the cooling oil inlet temperature and the cooling oil outlet temperature, a cooling device is indicated to execute temperature control operation; acquiring operation data of the transformer after the cooling device executes the temperature control operation; the operation data comprises a hot spot temperature, a top oil temperature, an environment temperature, a load rate and an operation duration; inputting the top oil temperature, the environment temperature, the load rate and the operation duration into a hot-spot temperature prediction model to obtain a target hot-spot temperature; acquiring a plurality of historical hot spot temperatures of the transformer; performing curve fitting on the plurality of historical hot-spot temperatures to obtain a hot-spot temperature curve; and performing PID control on the hot-spot temperature according to the hot-spot temperature, the target hot-spot temperature and the hot-spot temperature curve so as to adjust the hot-spot temperature to the target hot-spot temperature. The accuracy of temperature control can be improved.
Owner:SHENZHEN POWER SUPPLY BUREAU

Compressor type selection method and device for four-section type compressed air energy storage system

The invention relates to the technical field of compressed air energy storage, discloses a compressor type selection method and device of a four-section type compressed air energy storage system, and aims at solving the problem that an existing compressor type selection method is poor in accuracy. Calculating the target power of the compressed air energy storage system; determining inlet and outlet temperatures of each section of compressor; respectively determining a first compression ratio of the first-section compressor and a second compression ratio of the second-section compressor based on a genetic algorithm; determining inlet and outlet pressure of each section of compressor according to the first compression ratio and the second compression ratio; the specific volume of each section of compressor is calculated according to the inlet and outlet temperature and inlet and outlet pressure of each section of compressor, and the air volume flow of an inlet of each section of compressor is calculated; and determining the model of each section of compressor according to the inlet-outlet temperature, the inlet-outlet pressure and the air volume flow. The compressor model selection accuracy is improved, and the method is particularly suitable for a large-scale compressed air energy storage system.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Double-threshold decision-making method based on battery inlet water temperature

The invention relates to the technical field of new energy automobile heat management, and discloses a battery inlet water temperature-based dual-threshold decision-making method, which is realized through the following components: an intelligent collaborative decision-making center module, a multi-source data sensing acquisition module, a waste heat recovery and efficient heat exchange module, a precise execution driving module and a multi-level safety guarantee module. The intelligent collaborative decision center module comprises a heat management controller and an AI intelligent control unit; the multi-source data sensing and collecting module comprises a battery management system, a whole vehicle controller, an air conditioner controller and a full-dimension parameter monitoring sub-module. The waste heat recovery and efficient heat exchange module comprises a double-effect Chiller, an electronic expansion valve, a three-way valve and a four-way valve; the invention aims to solve the problems that energy consumption is increased and efficient circulation of energy cannot be realized due to the fact that waste heat generated in the operation process of components such as a motor cannot be fully excavated and reused and temperature control requirements are met by depending on additional heating or refrigerating components in the heat management of the existing new energy automobile.
Owner:SHANGHAI YIDA AIR CONDITIONER

Method and device for predicting service life of rotating part of supercharger of diesel engine

The invention relates to the technical field of locomotive diesel engine equipment, in particular to a method and device for predicting the service life of a rotating part of a diesel engine supercharger, and the method comprises the steps: obtaining the first remaining service life of the rotating part of the supercharger through accounting according to the turbine inlet temperature according to a first formula; according to a second formula, obtaining a second remaining service life of the supercharger rotating part accounting according to the rotating speed of the supercharger; according to a third formula, obtaining a third residual service life of the supercharger rotating piece accounting according to the pressure of the engine oil inlet of the supercharger; and obtaining the remaining service life of the supercharger rotating part according to a fourth formula. According to the method for predicting the service life of the rotating part of the supercharger of the diesel engine, the service life of the rotating part of the supercharger can be predicted in real time, necessary maintenance and overhaul can be carried out on the supercharger in time, the fault rate and the fault influence of the rotating part of the supercharger are reduced, and therefore the safety of the diesel engine is improved, and the operation and maintenance cost is reduced.
Owner:CRRC DALIAN CO LTD +1

Finish rolling inlet temperature forecast control method and device, electronic equipment and storage medium

ActiveCN120644485ATemperature control deviceThermodynamicsTemperature forecasting
The invention provides a finish rolling inlet temperature forecast control method and device, electronic equipment and a storage medium, and relates to the technical field of steel rolling, and the method comprises the following steps: firstly, constructing a temperature forecast control model based on historical data in the hot rolling cooling process of different plates, and then according to the temperature data collected at the real temperature and the output result of the temperature forecast control model, calculating the temperature forecast control value; dynamically adjusting parameters of the temperature forecast control model; based on the deviation between the temperature distribution predicted by the temperature forecast control model and the target temperature distribution, parameters of a cooling system are adjusted so as to control the cooling temperature of a finish rolling inlet; through the method, the technical problem that the cooling temperature control precision is low in the hot rolling production process is solved, and the technical effects of improving the temperature stability of a finish rolling inlet, and improving the cooling efficiency and the product quality stability are achieved.
Owner:ANSTEEL AUTOMAION CO

Heat pump system and control method thereof

The invention relates to a heat pump system and a control method thereof, the heat pump system is provided with a liquid spraying enthalpy increasing branch, a refrigerant in a refrigerant circulation loop can be shunted between a first throttling element and a main path of an economizer, and the refrigerant flows into an air supplementing opening of a compressor through an auxiliary path of the economizer for air supplementing and enthalpy increasing. An air supply throttling element is arranged on the liquid spraying enthalpy increasing branch, and the controller obtains the exhaust superheat degree according to the exhaust temperature and the exhaust pressure, determines the optional adjusting mode of the opening degree of the air supply throttling element according to the exhaust superheat degree and obtains the superheat degree of the economizer according to the side road inlet temperature and the side road outlet temperature. According to the method, the target adjusting mode is determined from the selectable adjusting modes based on the superheat degree of the economizer, the opening degree of the air supply throttling element is controlled through the target adjusting mode, and the reliability of the compressor can be guaranteed while the exhaust temperature is reduced and the refrigerating and heating capacity is improved. And the heat exchange capacity of the economizer can be fully utilized, the refrigerant can be ensured to obtain sufficient supercooling degree, and the heat absorption capacity of the evaporator is improved.
Owner:HISENSE (GUANGDONG) AIR CONDITIONER

Liquid cooling water tower control method and system

The invention relates to the technical field of liquid cooling water tower control, in particular to a liquid cooling water tower control method and system.The control method comprises the steps that the water inlet temperature Tin, the water outlet temperature Tout and the environment temperature Tenv of a cooling water tower are collected in real time, and a dynamic adjustment model is established based on the water inlet temperature Tin, the water outlet temperature Tout and the environment temperature Tenv to calculate the target cooling efficiency eta target; and according to the difference value between the eta target and the real-time cooling efficiency eta real, the cooling water flow Q and the fan rotating speed N are dynamically adjusted, and the optimal ratio of Q to N is determined through an energy efficiency optimization algorithm to reduce energy consumption. And when the cooling load is suddenly changed, a feedforward-feedback composite control mode is started. A multi-stage safety control strategy is set, and a thermal runaway prediction model is adopted to prevent risks in advance. The corresponding system comprises a distributed temperature sensing array, a frequency conversion speed regulation module, an edge calculation unit and an emergency cooling execution mechanism. The cooling efficiency can be improved, the energy consumption can be reduced, and the system stability and safety can be enhanced.
Owner:SITUORUI (XIAMEN) DIGITAL TECH CO LTD

Heat exchange equipment and control method based on heat exchange equipment

The invention provides heat exchange equipment and a control method based on the heat exchange equipment, the heat exchange equipment comprises a shell, the shell is provided with a first end and a second end which deviate from each other, the first end faces a first space and is provided with a fresh air port and an exhaust port, and the second end faces a second space and is provided with an air supply port and an air return port; the detection device is configured to obtain the air inlet temperature of the fresh air opening; the control device is configured to calculate the dew point temperature of the second space in the state that the air inlet temperature is higher than the preset temperature; the detection device is further configured to obtain the air supply temperature of the air supply outlet, and the control device is further configured to compare the air supply temperature with the dew point temperature.
Owner:PANASONIC ECOLOGY SYSTEMS GUANGDONG CO LTD