35results about How to "Guaranteed energy-saving operation" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention belongs to the technical field of heat pumps, and discloses a control method and a water temperature control device for a two-connected heat pump system. The control method of the two-connected heat pump system includes the following steps: obtaining the required water temperature parameters and the detection cycle; calculating the room temperature change value within the detection cycle and the indoor temperature deviation value within the detection cycle according to the function defined in the control method; The room temperature change value within the detection period and the indoor temperature deviation value within the detection period determine the relevant parameters in the target control water temperature function of the heat pump system; determine the target control water temperature function of the heat pump system, and calculate the target control water temperature function of the heat pump system to obtain the temperature within the detection period The heat pump system aims to control the water temperature. Through the control method of the two-connected heat pump system, the two-connected heat pump unit can establish a linkage relationship with the control of indoor equipment, have the ability to automatically adjust the set water temperature according to indoor load changes, and reduce the number of times users manually adjust the two-connected heat pump unit.