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35results about How to "Guaranteed energy-saving operation" patented technology
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Intelligent fresh air control device
InactiveCN101769585AEasy to useIntelligent controlSpace heating and ventilation safety systemsLighting and heating apparatusResidenceIndoor air quality
The invention discloses an intelligent fresh air control device, which relates to a fresh air conditioning device of an air conditioning system. The intelligent fresh air control device mainly comprises a temperature humidity sensor, a carbon dioxide concentration sensor, a computer controller, an electrically operated valve and the like. The intelligent fresh air control device has the characteristics of intelligent control, convenient use, accurate control, energy-saving operation, small volume and low cost. And the intelligent fresh air control device also has the characteristics of improving the indoor air quality and meeting requirements of people for the indoor comfort and health. The intelligent fresh air control device can be widely applied to the air conditioning systems of various buildings such as residences, hotels, public buildings and the like and is the fresh air device which is controlled intelligently and saves energy.
Owner:CHONGQING UNIV
Air conditioning system startup and shutdown control device based on indoor heat comfort state and method
ActiveCN105509264AEasy to useAvoid hysteresisMechanical apparatusSpace heating and ventilation safety systemsData acquisitionEngineering
The invention discloses an air conditioning system startup and shutdown control device based on an indoor heat comfort state and a control method. The device comprises an indoor data acquisition device, an outdoor data acquisition device, a computation controller and an electric valve. The indoor data acquisition device and the outdoor data acquisition device respectively comprise a temperature sensor, a humidity sensor, a black-bulb temperature sensor and a wind speed sensor, are respectively connected with a data inlet end of the computation controller, and form linkage control together with the electric valve. The computation controller is loaded with an adaptive predicted mean vote computation and comparison program. The electric valve is connected with the computation controller through a data connecting line and is connected with an original air condition system control box through a conducting wire. The control method of the device disclosed by the invention comprises the steps of comparing with an adaptive predicted mean vote obtained by the computation controller, giving out, by the computation controller, an action instruction to the electric valve, and then controlling the startup and shutdown of an indoor air conditioning system and the turning-on and turning-off of the indoor data acquisition device and the outdoor data acquisition device.
Owner:CHONGQING UNIV
Household fresh air purifying full-air-conditioning system
ActiveCN107228428ASmall temperature fluctuationsRealize the function of air conditioningMechanical apparatusSpace heating and ventilation safety systemsVapor–liquid separatorFresh air
The invention discloses a household fresh air purifying full-air-conditioning system which comprises a fresh air purifying air-conditioning unit, a circulation water route and an outdoor unit. The fresh air purifying air-conditioning unit comprises a pipe section with a fresh air inlet and a return air inlet. Fresh air fed from the fresh air inlet and return air fed from the return air inlet are mixed in a mixing section and filtered through a low-efficiency filter, and enter a surface type heat exchanger to exchange heat with freezing or cooling water for dehumidification, and air treated by the surface type heat exchanger enters a high-efficiency filter to be filtered again under the drive of an air feeder and then is fed into a room through an air feeding inlet. An outdoor unit comprises a compressor. The compressor is connected with an air cooling heat exchanger, a water cooling heat exchanger, a gas-liquid separator and the like through a four-way reversing valve. A freezing or cooling water inlet of the surface type heat exchanger is connected with a heat exchange water outlet of the water cooling heat exchanger, a freezing or cooling water outlet of the surface type heat exchanger is connected with a heat exchange water inlet of the water cooling heat exchanger, and therefore the circulation water route is formed. Indoor environment is adjusted and controlled in winter, summer and transition seasons, and a comfortable and healthy natural environment is simulated.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Thermal power generating unit coal quantity feed-forward quantization design method based on coordination control qualities
ActiveCN103116271AGuaranteed energy-saving operationEnsure coordination and control qualityAdaptive controlLoop controlControl engineering
The invention discloses a thermal power generating unit coal quantity feed-forward quantization design method based on coordination control qualities. When sliding pressure and deep peak load operation are needed mostly by a large-scale thermal power generating unit at present, a convention coal quantity feed-forward control method is difficult to achieve fast and accurate dynamic follows from an input coal quantity to long time to produce loads. The technical scheme is characterized in that firstly, a deviation is calculated through load commands of speed rates limiting front-and-back, a coal quantity feed-forward quantization scale is obtained through a quantization scale one-dimensional polygonal function, thus basic quantization scales with different bracket load coal quantity feedforward; secondly, coal quantity feed-forward quantization signals with closed-loop control features are designed according to coordination control quality requirements and unit characteristics; finally, the quantization scale one-dimensional polygonal function is used for correcting the coal quantity feed-forward quantization signals. The thermal power generating unit coal quantity feed-forward quantization design method based on the coordination control qualities is capable of ensuring unit energy-saving operation, capable of ensuring the unit coordination control qualities. When the unit is in automatic gain control (AGG) state, coal quantity feed-forward fluctuation ranges are greatly reduced, and stability of the unit is strengthened.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
Air conditioner control method, device and computer storage medium
ActiveCN109237743AExtension of timeAvoid frequent start and stopMechanical apparatusSpace heating and ventilation safety systemsStart stopTemperature difference
The invention discloses an air conditioner control method, a device and a computer storage medium, which belong to the technical field of intelligent household appliances. The air conditioner controlmethod comprises the following processes: when the compressor of the air conditioner operating in the cooling mode is stopped and the operation is stopped, the first temperature difference between thecurrent ambient temperature and the set temperature in the area of the air conditioner is smaller than the first set temperature value, determining a compensation set temperature greater than the settemperature according to a preset compensation strategy; Controlling the compressor to start operation when the second temperature difference between the current ambient temperature and the compensation set temperature is greater than the first set temperature value. Therefore, when the air conditioner is positioned in the room or the area, the heat loss of the room or the area is small, the temperature compensation can be carried out on the comparison, the time for stopping the operation of the compressor can be prolonged, the frequent start-stop of the compressor in the heat preservation space can be avoided, the energy-saving operation of the air conditioner is ensured, and the air conditioner is also protected.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for designing intelligent sliding pressure curve for thermal power generating unit on the basis of coordinated control quality
ActiveCN102998972AGuaranteed energy-saving operationEnsure coordination and control qualityAdaptive controlAutomatic Generation ControlLoop control
The invention discloses a method for designing sliding pressure curve for a thermal power generating unit on the basis of coordinated control quality. Due to coupling of a coordinated control system, fast and accurate dynamic following is hard to achieve for conventional sliding pressure curve designs and control methods, and AGC (automatic generation control) is poor in operation quality. The method is characterized by including: firstly, designing a shape of the ideal intelligent sliding pressure curve according to the requirement of the thermal power generating unit for coordinated control; and secondly, performing segmental design, including a reference segment, an initial compensation segment and a final compensation segment, according to the ideal shape of the intelligent sliding pressure curve, adding intelligent judgment rules to each segment, performing variable parameter adjustment to allow for constant dynamic adjustment in the whole load variation process, and thereby guaranteeing quality in coordinated control of the thermal power generating unit. By applying the method, energy-saving operation of the thermal power generating unit is guaranteed, quality in coordinate control of the thermal power generating unit is guaranteed, fluctuation range of a closed-loop control circuit is greatly reduced and stability of the thermal power generating unit is enhanced.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
Air compressor air inflow control system and control method thereof
ActiveCN107035671AAvoid heavy startup loadsPrevent crashPump controlPositive-displacement liquid enginesAxial compressorStaring
The invention relates to an air compressor air inflow control system and a control method thereof. The air compressor air inflow control system comprises an air inflow valve, a stopping air release valve, a circulation unloading valve, a pressure adjusting valve, a loading / unloading solenoid valve, a high / low pressure switching solenoid valve, a one-way valve, an adjustable throttling valve, a filter and a throttle valve. According to the air inlet control scheme, underloading staring of an air compressor can be achieved, low-pressure internal circulation of the air compressor system in the unloading state is maintained, two-gear system working pressure is achieved, starting difficulties of the air compressor can be overcome through the functions, energy-saving operation of the air compressor in the unloading state is guaranteed, and the high / low pressure working pressure of the system can be set according to operation requirements of clients.
Owner:SUNWARD INTELLIGENT EQUIP CO LTD
Steam temperature observation optimal control method for supercritical unit
ActiveCN103032869AGuaranteed energy-saving operationMain steam temperature fluctuations are reducedSuperheating controlThermodynamicsProportion integration differentiation
The invention discloses a steam temperature observation optimal control method for a supercritical unit. At present, as a point measuring position is excessively near a desuperheating water valve in steam temperature control systems of most of units, an ideal control effect cannot be achieved on introduced advancing steam temperature, and the effect of controlling outlet steam temperature is poorer by using single-stage proportion integration differentiation (PID). The technical scheme adopted by the invention is that a state observation system is introduced into an outlet steam temperature control system to form an outlet steam temperature observation optimal control system. The dynamic procedure of the outlet steam temperature is fit by the state observation system by adopting a mathematical model, and the control is performed through an analog advancing signal and an advancing observation signal. Meanwhile, the steady state and the zero deflection of the outlet steam temperature observation optimal control system are ensured by adopting a static error eliminating system. The mathematical model, the state fitting, the state feedback factor and the control feedback factor of the outlet steam temperature are determined according to the characteristic of the supercritical unit. According to the steam temperature observation optimal control method for the supercritical unit, energy-saving operation of the unit is ensured; the fluctuation range of the outlet steam temperature is greatly reduced when the unit is in an automatic gain control (AGC) state; and the stability of the unit is enhanced.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
Control method of train-mounted signal system for on-line double heading of trains
ActiveCN109334685AShorten the timeEnergy consumption will not increaseLocomotivesControl signalEngineering
The invention provides a control method of a train-mounted signal system for on-line double heading of trains. The control method comprises the steps of simultaneously providing a hardwired signal A and a hardwired signal B to the train-mounted signal system through train interface devices, not activating the hardwired signal A or the hardwired signal B in the case of no double heading of the trains, activating the hardwired signal A in the case of double heading of two A-type trains, activating the hardwired signal B in the case of double heading of two B-type trains, simultaneously activating the hardwired signal A and the hardwired signal B in the case of double heading of the A-type train and the B-type train, identifying a double heading type through train-mounted signal devices according to the two received hardwired signals, loading matched train data, performing calculation and train control operation according to the loaded train data, sending a power supply control signal through the train interface devices in the case of double heading of the trains to turn off power supply of non-control devices so as to ensure that the non-control devices quit operation, and reestablishing communication connection between the front and back train-mounted signal devices after double heading of the trains so as to be in charge of the operation and control of the trains.
Owner:HUNAN CRRC TIMES SIGNAL & COMM CO LTD
Method of controlling emission of dry dedusting of converter
InactiveCN110273044AEnsure normal dischargeGuaranteed energy-saving operationManufacturing convertersProcess efficiency improvementEvaporative coolerNitrogen
The invention discloses a method of controlling emission of dry dedusting of a converter. The method comprises an initial blowing stage, an early blowing stage, a middle blowing stage and a later blowing stage, specifically, in the initial blowing stage, fixedly controlling the opening of a water regulating valve of an evaporative cooler to 15-18% in the beginning 14-16 S of blowing, and controlling the flow of the evaporative cooler at 18-22 m<3> / h; after blowing for 14-16 S, by taking the outlet temperature of the evaporative cooler as a control target for controlling an EVC water distribution curve, adjusting the control target according to the environment temperature; in summer, the outlet temperature target value of the evaporative cooler is 250-260 DEG C, and in winter, the outlet temperature target value of the evaporative cooler is 310-320 DEG C; and the outlet temperature target values of the evaporative cooler in spring and autumn are 280-290 DEG C. By integrally controlling a primary dust collecting fan, EVC water distribution, top blowing of oxygen and nitrogen, on the premise of guaranteeing standard discharge of a diffusing tower, stable and reliable energy-saving operations of dry method dedusting equipment are guaranteed, so that the method is suitable for being popularized and applied in various iron and steel enterprises.
Owner:HEBEI IRON AND STEEL +1
Heat pump water heating machine and water temperature control method and device for heat pump water heating machine
The invention discloses a water temperature control method for a heat pump water heating machine. The water temperature control method comprises the following steps of obtaining default set water temperature of the heat pump water heating machine, determining working functions of the heat pump water heating machine and relevant parameters in the working functions of the heat pump water heating machine; calculating target water temperature through the working functions according to the default set water temperature and the relevant parameters; controlling the heat pump water heating machine and the target water temperature to perform work. By means of the water temperature control method, the target water temperature can be automatically adjusted to ensure water comfort degree of a user and operation energy-saving performance of the whole machine, convenience is brought to the user, and user experience is improved. The invention further discloses a water temperature control device for the heat pump water heating machine and the heat pump water heating machine.
Owner:HEFEI MIDEA HEATING & VENTILATING EQUIP
Large temperature difference centralized heating system using power plant waste heat and work method
ActiveCN108800275ALower return water temperatureImprove heat utilizationHeat recovery systemsLighting and heating apparatusTemperature differenceProcess engineering
The invention discloses a large temperature difference centralized heating system using power plant waste heat and a work method. A two-stage water-water heat exchanger and a two-stage power drive heat pump unit are arranged in a two-stage net heat exchange station, a circular cooling water waste heat recycling heat exchanger, a circular cooling water waste heat recycling electric heat pump unit,steam-water heat exchanger and a water-water heat exchanger are arranged in a first-stage pipe network heat exchange station, on the premise of ensuring the secondary network normal water supply temperature, water supply temperature of a primary heat network can be greatly reduced, steam consumption of a heat supply system is greatly reduced, and the use proportion of thermal power plant circularwater waste heat is greatly improved. Meanwhile, it is ensured that a secondary pipe network has the normal water supply temperature and water supply and returning temperature difference, the water supply temperature of the primary heat network is reduced to 80 DEG C, the water supply temperature of a secondary pipe network reaches about 70 DEG C, and the normal running flow of the secondary pipenetwork and energy-saving running of the circular water pump are ensured.
Owner:HENAN POLYTECHNIC UNIV
Energy-saving quick-start aerobic granular sludge reactor
ActiveCN106219745ARealize energy-saving operationShorten the start-up periodSustainable biological treatmentBiological water/sewage treatmentSludgeAir compressor
The invention discloses an energy-saving quick-start aerobic granular sludge reactor. The reactor comprises a reactor outer cylinder, the bottom of the reactor outer cylinder is provided with a conical sludge storage hopper, a microporous aeration device is arranged at the bottom of the conical sludge storage hopper and is connected with an external gas flow meter and an air compressor through aeration pipes, the conical sludge storage hopper is further connected with a water inlet pipe, the water inlet pipe is connected to a water inlet pump outside the reactor, the reactor outer cylinder is connected with a drainage pipe, drainage of the reactor is controlled by a water outlet control valve on the drainage pipe, and a multi-stage conical hydraulic circulating cover is arranged in the reactor outer cylinder. Multi-stage circulation of mixed liquid under different mixing strength conditions is achieved in the reactor with a small height diameter (smaller than 2), power consumption for operation of the aerobic granular sludge reactor and reactor height limitation are reduced, and operation and building cost of the aerobic granular sludge reactor is reduced.
Owner:HOHAI UNIV
Novel solar air source heat pump system and hot water production method
ActiveCN102563973ATake advantage ofRaise the evaporation temperatureSolar heating energyHeat pumpsEvaporationWater production
The invention relates to a novel solar air source heat pump system and a hot water production method. The system comprises an air source heat pump system which comprises a heating heat pump evaporator, the heating heat pump evaporator is a finned pipe type heat exchanger which comprises an evaporation working medium return pipe, a solar thermal medium return pipe and a plurality of heat exchange fins arranged in sequence, each heat exchange fin comprises a main radiation face, and the main radiation faces of each two adjacent heat exchange fins are opposite. The evaporation working medium return pipe and the solar thermal medium return pipe are in parallel and both penetrate through the heat exchange fins, and the thermal medium in the solar thermal medium return pipe exchanges heat with the evaporation working medium return pipe through the heat exchange fins. Solar energy can be fully used by means of the novel solar air source heat pump system, and efficiency of an air source heat pump is greatly improved.
Owner:湖南鼎力智慧生态科技有限公司
Multi-signal optimization energy-saving electric precipitation control method
PendingCN113976323AImprove dust removal efficiencyOptimal operating parametersDesign optimisation/simulationSpecial data processing applicationsDust controlLogical analysis
The invention discloses a multi-signal optimization energy-saving electric precipitation control method, and relates to the technical field of energy conservation and environmental protection, the multi-signal optimization energy-saving electric precipitation control method comprises an electric precipitator control system, and the electric precipitator control system comprises an optimization algorithm system based on an electric precipitation control system. The optimization algorithm system comprises a signal acquisition device, a data storage module and a logic analysis module. According to the method, the unit load, the dust concentration of a powder outlet, the dust conveying time of a bin pump and the high-low material level change time of a dust hopper are combined and analyzed to obtain the dust removal efficiency of the electric dust remover with known airflow parameters and dust radiuses under different limit line board intervals, and the optimal dust removal efficiency is found through comparison so as to obtain the optimal operation parameters; and by combining and analyzing unit load, dust concentration of a powder outlet and coal quality parameters and substituting voltage and current when a signal peak value occurs, energy consumption changes of a front system and a rear system are obtained, an optimization strategy of an energy-saving model is obtained, and power consumption of system operation is reduced to the maximum extent.
Owner:HUANENG QUFU THERMAL POWER CO LTD
Cold channel closed management method and device and terminal equipment
ActiveCN112084096AGuaranteed energy-saving operationTimely notificationMeasurement devicesHardware monitoringMonitoring siteCurrent load
The invention is applicable to the technical field of machine room management, and particularly relates to a cold channel closed management method and device and terminal equipment, and the method comprises the steps: obtaining cold channel image data in a target machine room, the output cooling capacity of an air conditioner under a current load rate, and monitoring data corresponding to each cabinet monitoring point; establishing a three-dimensional monitoring data cloud chart of the target machine room; if the monitoring data of a cabinet monitoring point exceeds a preset monitoring range,taking the cabinet monitoring point of which the monitoring data exceeds the preset monitoring range as an abnormal monitoring point; determining an abnormal reason of the abnormal monitoring point according to the cold channel image data, the three-dimensional monitoring data cloud chart or the first cooling capacity data; and generating alarm information based on the abnormal reason. According to the method, the abnormal monitoring points can be captured in time and the abnormal reason can be determined, so that the operation and maintenance personnel can be notified in time, the further loss of the cooling capacity can be avoided, and the energy-saving operation of the cabinet can be ensured.
Owner:KEHUA DATA CO LTD +2
Novel energy-saving elevator system and constant power operation control method thereof
ActiveCN111747277AImprove performanceReduce energy consumptionElevatorsBuilding liftsElevator systemConstant power
The invention discloses a novel energy-saving elevator system and a constant power operation control method. The novel energy-saving elevator system comprises an elevator car, a counterweight box, a variable counterweight block device, a connecting chain, a variable speed driving device and a control system, wherein a weighing device is arranged on the elevator car, and the variable counterweightblock device is located at the top of an elevator shaft; the variable driving device comprises a traction motor and a transmission connected with the traction motor in a transmission mode, and an output shaft of the transmission is connected with a traction wheel in a transmission mode; and the connecting chain bypasses the traction wheel in the variable speed driving device, and the two sides ofthe connecting chain are correspondingly connected with the elevator car and the counterweight box. According to the novel energy-saving elevator system, the weight and the transmission variable speedratio of the counterweight box can be simultaneously changed, thus the output torque of a traction machine is indirectly adjusted, the output power of the traction motor is basically kept near the rated power, the performance of the motor is optimized, the unnecessary loss is reduced, and finally the effect of reducing energy consumption of the elevator is achieved.
Owner:河南韶源电子科技有限公司
A method for controlling cooling balance at the end
ActiveCN107421029BRealize dynamic adjustmentGuaranteed cooling effectMechanical apparatusSpace heating and ventilation safety systemsLoop controlControl engineering
The invention provides a tail end cooling capacity equilibrium control method. The tail end cooling capacity equilibrium control method comprises the following steps that cooling capacity equilibrium control over all chilled water branch loops is dynamically adjusted through a fuzzy cascade control strategy; cooling capacity equilibrium control over the cold site refrigerating capacity and the tail end cold requirement is achieved through feedforward and feedback control; and step control is used for achieving coupling control between the cooling capacity equilibrium control and the cooling capacity balanced control, and energy-saving control over a chilled water system is achieved. According to the tail end cooling capacity equilibrium control method, fuzzy cascade closed-loop control is adopted for achieving cooling capacity equilibrium control overall all loops at the tail end of a chilled water system; on the basis of tail end equilibrium, the tail end total cooling capacity requirement is analyzed by collecting chilled water relevant data, communication with an air conditioner main machine is achieved, the cooling capacity of the air conditioner main machine is calculated by collecting air conditioner main machine relevant data, and the refrigerating performance of the tail end equipment and energy-saving running of the system are guaranteed.
Owner:江苏联宏智慧能源股份有限公司 +1
Intelligent sliding pressure curve design method for thermal power units based on coordinated control quality
ActiveCN102998972BGuaranteed energy-saving operationEnsure coordination and control qualityAdaptive controlAutomatic Generation ControlLoop control
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
Intelligent and efficient machine room energy-saving method and system for central air-conditioning system
PendingCN114608085ASafe and stable operationGuaranteed cooling effectMechanical apparatusSpace heating and ventilation safety systemsAutomatic controlControl signal
The invention is suitable for the technical field of machine room energy saving, and provides an intelligent and efficient machine room energy-saving method and system for a central air-conditioning system, and the method comprises the following steps: a field controller analyzes and processes a signal collected by a sensor through an input module; outputting the control signal to an execution mechanism and carrying out local full-automatic control; a refrigeration station field controller collects operation state data of a refrigerator, and the field controller uploads the data to a transfer station control cabinet through a network and uploads the data to a central upper computer of a centralized monitoring layer through the Ethernet. And receiving monitoring and management instructions issued by the monitoring station to perform remote centralized management. On the premise of ensuring the cooling effect, the overall energy-saving control of electromechanical equipment in each refrigeration room is realized by taking the lowest overall energy consumption of all equipment in the refrigeration room of each workshop as a target, and the overall energy-saving operation is realized on the premise of ensuring the safe and stable operation of the refrigeration room.
Owner:上海聚鑫节能工程科技有限公司
Steam temperature observation optimal control method for supercritical unit
ActiveCN103032869BGuaranteed energy-saving operationMain steam temperature fluctuations are reducedSuperheating controlThermodynamicsControl system
The invention discloses a steam temperature observation optimization control method of a supercritical unit. At present, most of the unit steam temperature control systems are too close to the desuperheating water valve, and the introduction of the pilot steam temperature cannot achieve the ideal control effect, and the effect of controlling the outlet steam temperature with a single-stage PID is even worse. The technical solution adopted in the present invention is: a state observation system is introduced into the outlet steam temperature control system to form an outlet steam temperature observation optimization control system. The state observation system uses a mathematical model to fit the dynamic process of the outlet steam temperature, and leads The signal and the leading observation signal are used for control, and the static difference elimination system is used to ensure that the outlet steam temperature observation optimization control system is stable without deviation; the mathematical model, state fitting, state feedback coefficient and control of the outlet steam temperature are determined according to the characteristics of the supercritical unit Feedback factor. The invention ensures the energy-saving operation of the unit; when the unit is in the AGC state, the fluctuation range of the main steam temperature is greatly reduced, and the stability of the unit is enhanced.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
A heat pump system and method for recovering waste heat of condenser for water replenishment of heating network
ActiveCN105972676BEasy to operateIncrease temperatureHeat recovery systemsSpace heating and ventilation detailsCooling towerEconomic benefits
The present invention relates to a heat pump system and a method for recycling condenser waste heat for water supply of a heat supply network. At present, energy-saving reconstruction of a heat supply network water supply link by an absorption heat pump in domestic power plants has not been paid full attention to. The heat pump system comprises a condenser unit, and is characterized in that the system also comprises a cooling tower, an absorption heat pump unit and a first temperature gauge, wherein a cooling water outlet of the condenser unit is connected with a cooling water inlet of the cooling tower through a cooling tower water supply pipeline, a cooling water outlet of the cooling tower is connected with a cooling water inlet of the condenser unit through a cooling tower water return pipeline, a heat pump waste heat water outlet of the condenser unit is connected with a waste heat water inlet of the absorption heat pump unit, a heat supply network water return pipeline is connected with a heat supply network water inlet of the absorption heat pump unit, the first temperature gauge is installed on the heat supply network water return pipeline, and a heat supply network water outlet of the absorption heat pump unit is connected with a heat supply network water supply pipeline. With adoption of the system and the method, the efficiency of energy utilization is high, and the economic benefit is good.
Owner:HANGZHOU HUADIAN SHUANGLIANG ENERGY SAVING TECH
A household fresh air purification full air conditioning system
ActiveCN107228428BSmall temperature fluctuationsRealize the function of air conditioningMechanical apparatusSpace heating and ventilation safety systemsVapor–liquid separatorFresh air
A household fresh air purification full air conditioning system, comprising a fresh air purification air conditioning unit, a circulating water circuit and an outdoor unit, the fresh air purification air conditioning unit comprises a pipe section with a fresh air outlet and a return air outlet, the fresh air sent from the fresh air outlet and the return air sent from the return air outlet It is mixed in the mixing section, filtered by a coarse filter, and then enters the surface heat exchanger for heat exchange and dehumidification with freezing or cooling water. It is sent indoors from the air supply port; the outdoor unit includes a compressor, and the compressor is connected to an air-cooled heat exchanger, a water-cooled heat exchanger, a gas-liquid separator, etc. through a four-way reversing valve; the chilled water / cooling water of the surface heat exchanger The inlet is connected with the hot water outlet of the water-cooled heat exchanger, and the chilled water / cooling water outlet of the surface heat exchanger is connected with the hot water inlet of the water-cooled heat exchanger to form a circulating water circuit. The invention realizes the regulation of indoor environment in winter, summer and transition season, and simulates a comfortable and healthy natural environment.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Control method of air conditioning system, air conditioning system and air conditioner
ActiveCN114294789AStable outputUniform cooling effectMechanical apparatusSpace heating and ventilation safety systemsControl engineeringProcess engineering
The invention discloses a control method of an air conditioning system, the air conditioning system and an air conditioner. Judging whether the number of started compressors needs to be adjusted according to the running state of the air-conditioning system; when the number of the started compressors needs to be reduced, at least one started compressor is selected to be closed, and the frequency increasing action is executed on all the adjusted started compressors; and / or when the number of the started compressors needs to be increased, at least one closed compressor is selected to be started, and the frequency reduction action is executed on all the adjusted started compressors. By adjusting the starting number of the compressors and the operation frequency of the started compressors, the indoor load requirement is met, and energy-saving operation is kept.
Owner:GREE ELECTRIC APPLIANCES INC
Heat pump water heater and water temperature control method and device for heat pump water heater
ActiveCN104534679BEnsure water comfortGuaranteed energy-saving operationFluid heatersTemperature controlWork function
The invention discloses a water temperature control method for a heat pump water heater, comprising the following steps: obtaining the default water temperature setting of the heat pump water heater; determining the working function of the heat pump water heater, and determining the The related parameters of the heat pump water heater in the function; the target water temperature is calculated through the working function according to the default set water temperature and the related parameters; and the heat pump water heater is controlled to work at the target water temperature. The method can automatically adjust the target water temperature, ensure the user's water comfort and the energy-saving performance of the whole machine, provide convenience for the user, and improve the user's experience. The invention also discloses a water temperature control device for a heat pump water heater and a heat pump water heater.
Owner:HEFEI MIDEA HEATING & VENTILATING EQUIP
Novel solar air source heat pump system and hot water production method
ActiveCN102563973BTake advantage ofRaise the evaporation temperatureSolar heating energyHeat pumpsEvaporationWater production
The invention relates to a novel solar air source heat pump system and a hot water production method. The system comprises an air source heat pump system which comprises a heating heat pump evaporator, the heating heat pump evaporator is a finned pipe type heat exchanger which comprises an evaporation working medium return pipe, a solar thermal medium return pipe and a plurality of heat exchange fins arranged in sequence, each heat exchange fin comprises a main radiation face, and the main radiation faces of each two adjacent heat exchange fins are opposite. The evaporation working medium return pipe and the solar thermal medium return pipe are in parallel and both penetrate through the heat exchange fins, and the thermal medium in the solar thermal medium return pipe exchanges heat with the evaporation working medium return pipe through the heat exchange fins. Solar energy can be fully used by means of the novel solar air source heat pump system, and efficiency of an air source heat pump is greatly improved.
Owner:湖南鼎力智慧生态科技有限公司
An energy-saving quick-start aerobic granular sludge reactor
ActiveCN106219745BReduce aerationEnhanced startup cycleSustainable biological treatmentBiological water/sewage treatmentSludgeAir compressor
The invention discloses an energy-saving quick-start aerobic granular sludge reactor. The reactor comprises a reactor outer cylinder, the bottom of the reactor outer cylinder is provided with a conical sludge storage hopper, a microporous aeration device is arranged at the bottom of the conical sludge storage hopper and is connected with an external gas flow meter and an air compressor through aeration pipes, the conical sludge storage hopper is further connected with a water inlet pipe, the water inlet pipe is connected to a water inlet pump outside the reactor, the reactor outer cylinder is connected with a drainage pipe, drainage of the reactor is controlled by a water outlet control valve on the drainage pipe, and a multi-stage conical hydraulic circulating cover is arranged in the reactor outer cylinder. Multi-stage circulation of mixed liquid under different mixing strength conditions is achieved in the reactor with a small height diameter (smaller than 2), power consumption for operation of the aerobic granular sludge reactor and reactor height limitation are reduced, and operation and building cost of the aerobic granular sludge reactor is reduced.
Owner:HOHAI UNIV
A new type of energy-saving elevator system and its constant power operation control method
ActiveCN111747277BImprove performanceReduce energy consumptionElevatorsBuilding liftsElevator systemConstant power
The invention discloses a new energy-saving elevator system and its constant power operation control method, wherein the new energy-saving elevator system includes an elevator car, a counterweight box, a variable counterweight device, a connecting chain, a variable speed drive device and a control system, wherein : The elevator car is equipped with a weighing device, and the variable counterweight device is located on the top of the elevator shaft; the variable speed drive device includes a traction motor and a transmission connected to the traction motor, and the output shaft of the transmission is connected to the traction wheel. ; The connecting chain bypasses the speed change and the traction sheave in the driving device, and the two sides of the connecting chain are respectively connected to the car and the counterweight box. The present invention can change the weight of the counterweight box and the transmission speed ratio at the same time, thereby indirectly adjusting the output torque of the traction machine, keeping the output power of the traction motor near the rated power, so that the performance of the motor can be optimized, reducing Unnecessary loss ultimately achieves the effect of reducing the energy consumption of the elevator.
Owner:河南韶源电子科技有限公司
Air-conditioning control method, device and computer storage medium
ActiveCN109237743BExtension of timeAvoid frequent start and stopMechanical apparatusSpace heating and ventilation safety systemsThermal insulationProcess engineering
The invention discloses a method, a device and a computer storage medium for air conditioning control, and belongs to the technical field of intelligent household appliances. The method includes: when a compressor of an air conditioner operating in a cooling mode stops running, and within a first set time of the stop running, a first temperature difference between the current ambient temperature in the area where the air conditioner is located and the set temperature When it is less than the first set temperature value, according to the preset compensation strategy, determine the compensation set temperature that is greater than the set temperature; when the second temperature difference between the current ambient temperature and the compensation set temperature When the temperature is greater than the first set temperature value, the compressor is controlled to start running. In this way, the heat loss of the room or area where the air conditioner is located is small, and when the thermal insulation is relatively high, temperature compensation can be performed to extend the time for the compressor to stop running, which can avoid the frequent start and stop of the compressor in the thermal insulation space. Energy-saving operation, also protects the air-conditioning device.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
A control method and water temperature control device for a two-connected heat pump system
ActiveCN113266925BGood energy saving effectGuaranteed energy-saving operationMechanical apparatusThermodynamicsTarget control
Owner:GUANGDONG NEW ENERGY TECH DEV
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