202results about How to "Realize energy-saving operation" patented technology

The invention relates to a dynamic capacity increasing method for an oil-immersed transformer, and belongs to the field of transformers. The method includes the steps that heat conduction process in the transformer is simplified into a circuit model; winding hot-spot temperature, top oil temperature, average oil temperature, average winding temperature of the transformer under the current load condition are calculated; according to the limit that the winding hot-spot temperature does not exceed 140 DEG C, whether temperature in the transformer will exceed the limit temperature or not under the current load and environment conditions is calculated, whether a temperature limit value is reached or not if long-term emergency loads or short-term emergency loads occur at the moment is calculated, and if the temperature in the transformer possibly exceeds the limit value of the short-term emergency loads, the time for reaching the limit value and the finally reached steady state temperature are calculated to serve as alarm signals; if it is monitored that the temperature will exceed the standard within t minutes, an early-warning signal is sent out, certain time delay is set, and if the loads are not reduced within the set time delay, a cooling fan of the transformer is turned on. Long-term continuous operation of cooling equipment can be avoided, and operation life of the cooling equipment is prolonged.

The invention discloses a variable frequency air conditioner low-frequency operating control method. The variable frequency air conditioner low-frequency operating control method comprises the steps that a first frequency value, a second frequency value,..., the Nth frequency value are set between a smallest frequency value and a largest frequency value in low-frequency operating from small to large, N is larger than or equal to two, and the Nth frequency value is larger than the smallest frequency value and is smaller than or equal to the largest frequency value; when a compressor operates below the largest frequency value in low-frequency operating, the compressor operates for more than 2 min under the first frequency value, the second frequency value,..., the Nth frequency and the largest frequency value respectively; the frequency of the compressor in the low-frequency operating period is acquired, and when the compressor operates for 30 min to 35 min continuously with the operating frequency of the compressor below the largest frequency value in low-frequency operating, the compressor operates for 2 min to 3 min for oil return with the frequency rising to the oil return frequency, and then the compressor operates with the frequency reduced to the frequency value before frequency rising. An air conditioner can effectively operate under the low frequency for a long time, the air conditioner can operate in an energy-saving mode, meanwhile, rotating speed control over corresponding inner and outer fans is matched, an air conditioning system can operate stably and safely, and meanwhile a stable temperature field is provided for the interior of a room.

The invention discloses a static-pressure variable control method of wind-variable air conditioning system, which comprises several wind-variable terminal with valve feedback parallel connected on one wind tube of air conditioner which has a fan frequency changer and a wind tube static pressure sensor on the wind tube, while the sensor is connected with one input of controller. The output of controller is connected to the fan frequency changer. The wind-variable terminal is connected to another input of controller. Or the air conditioner has several wind tubes while each tube is arranged with a wind tube static pressure sensor. The invention can adjust the fan frequency via the static pressure of wind tube, to realize stable and reliable control, while it can reduce the static pressure via the valve signal of wind-variable terminal at local load, to save energy.

The invention discloses an energy saver for an AC contactor, which comprises a half-wave rectification circuit, a square-wave generation circuit, a DC voltage-regulated power supply circuit, a signal converter and a charge/discharge circuit. The half-wave rectification circuit is used for half-wave rectification of mains power, the square-wave generation circuit is used for providing square-wave input for the signal converter, the DC voltage-regulated power supply circuit is used for providing a stable DC power supply for the signal converter, the signal output end of the signal converter is used for providing a control signal for the charge/discharge circuit, and the load of the charge/discharge circuit is an AC contactor. The current of the coil of the AC contactor can be changed through changing the pulse width of the output end of the signal converter, thereby realizing that the high current can flow through the coil of the AC contactor when the contacts of the AC contactor are closed, and the low current can flow through the coil of the AC contactor when the closed state of the contacts of the AC contactor is maintained. Therefore, the invention realizes the energy-saving operation of the AC contactor, reduces the noise and the temperature rise of the coil of the AC contactor, and prolongs the service life of the AC contactor.

The invention relates to vertical lift type parking equipment, and belongs to a mechanical tower type three-dimensional garage, which mainly solves the technical problems of large floor area and limited use existing in the conventional parking equipment. The vertical lift type parking equipment comprises a tower type parking garage which is constructed by a multi-layer steel structure frame, an open loop type lift system, a counterweight device, a cage, a control system, a fire extinguishing system, a vehicle carrying plate, a horizontal reciprocating transfer machine and a slewing device, wherein the vehicle carrying plate is arranged on a vehicle carrying plate guide rail on the bottom surface of each parking garage; the slewing device is arranged on a bottom frame at the bottom of the cage; and the horizontal reciprocating transfer machine is arranged on a slewing disk of the slewing device, so that the horizontal reciprocating transfer machine freely moves in and out of the garage. The vertical lift type parking equipment has the advantages of small floor area, a large number of parked vehicles and high space utilization rate.

The invention relates to the technical field of applications of high-voltage asynchronous motors and discloses an energy-saving soft-start device for a high-voltage asynchronous motor. The device is used for solving the problem that a soft starter occupies a larger space in the prior art and other problems. The technical scheme is as follows: the energy-saving soft-start device is characterized by comprising a signal detection processing circuit, a synchronous signal circuit, a control circuit, a trigger signal power amplifying circuit, a power execution circuit and a power circuit for providing more than one path of DC (direct-current) power supply, wherein the power execution circuit comprises three large groups of components which are in series connection between a terminal of a three-phase high-voltage AC (alternating-current) power supply and a terminal of the high-voltage asynchronous motor; each large group of components comprises two small groups of high-power thyristors which are connected in parallel in the opposite directions; and more than three high-power thyristors are connected in series in the same direction in each small group and two ends of each high-power thyristor are connected with circuits with voltage-sharing, protection and absorption effects in parallel. The energy-saving soft-start device has the beneficial effects of realizing the soft start and energy-saving running under a low load factor.

The invention discloses an energy management and intelligent control-based solar cooling tower, which comprises a solar battery, a first motor, a water pump, a second motor and speed reducer, a fan, a hybrid converter connected with the output end of the solar battery, an intelligent controller, and a sensor group; the output end of the hybrid converter is connected with the input ends of the first motor and the second motor and speed reducer; the signal output end of the sensor group is connected with the signal input end of the intelligent controller; the output end of the intelligent controller is connected with the signal input end of the hybrid converter; and the signal output end of the hybrid converter is connected with the signal input end of the intelligent controller. In the control process, the intelligent controller reasonably distributes the flowing direction of the electric energy through the hybrid converter by an energy management method, and performs intelligent speedregulating control on the first motor and the second motor and speed reducer by a water inlet temperature negative feedback method and a minimum enthalpy difference control method, and an energy-saving effect is achieved on the premise of ensuring operating reliability.

The invention discloses an air conditioner energy conservation control method, an air conditioner energy conservation control device and an air conditioner, wherein the method comprises the following steps: running the air conditioner to acquire a real-time indoor environment temperature and a set target temperature; calculating the temperature difference between the real-time indoor environment temperature and the set target temperature as real-time temperature difference; performing PID (Proportion Integration Differentiation) operation according to the real-time temperature difference to obtain a first frequency; meanwhile, acquiring a wind speed corresponding to the real-time temperature difference according to the corresponding relation between the known temperature difference and the wind speed as a real-time wind speed; acquiring a frequency corresponding to the real-time wind speed according to the corresponding relation between the known wind speed and the frequency as a second frequency; selecting the smaller value of the first frequency and the second frequency as a target frequency, and controlling a compressor of the air conditioner to run according to the target frequency. By using the method disclosed by the invention, energy conservation control of the air conditioner can be realized.

The invention discloses an environment room working condition adjusting system which comprises an air conditioner cabinet, a cooling device, a secondary refrigerant freezing circulating pipeline and a secondary refrigerant thermocycling pipeline. The system can work at a temperature lowering state, a working condition stable state, a defrosting state, an after-defrosting recovery state and a temperature raising state. By switching control of the freezing circulating pipeline, the thermocycling pipeline and an air conditioner electric air brake, a proper cold source and a proper heat source can be provided for a freezing surface air cooler and a cold and heat surface air cooler of the air conditioner cabinet, and the stability of environment room temperature and humidity working conditions is guaranteed. Surface air cooler automatic defrosting under the low-temperature working conditions is achieved, environment room working condition stability during the defrosting process can be guaranteed, and long-time operation of the low-temperature working conditions is achieved. The cooling device of the system is provided with a heat recovery unit, waste heat recovery is used for controlling secondary refrigerant temperature, and energy-saving operation is achieved.

The invention relates to a ventilation and air conditioning system for a base station room. The system is characterized by comprising an air conditioning main unit as well as an outdoor unit, an integrated controller, an air supply pipeline and an air return pipeline which are adaptive to the air conditioning main unit, wherein the integrated controller is arranged on a wall in the room, the air supply pipeline and the air return pipeline are connected with the air conditioning main unit respectively, the air supply pipeline is further connected with a filter unit, and the air return pipeline is further connected with an air exhaust box. The ventilation and air conditioning system has the benefits as follows: the structure design is reasonable, the temperature of the room can be comprehensively reduced, and the air outlet or air return position can be flexibly adjusted.

The invention is related to dedicated technical are of composite type air conditioner. Hoisting unit is installed on top part of chassis of air conditioner. Thus, set of air conditioner can be swung up under bridge for boarding plane in civil airport. After all new fresh air passes through processes of refrigeration by three evaporators in four pieces of refrigerating system or heated by electric heater, cold air or hot air is fed to passenger room and flightdeck in order to meet requirement of air quality and temperature. Driven by electric power, evaporators and refrigerating systems support multiple refrigeration modes in order to adapt to different environment of temperature. Advantages are: saving electric power, reducing consumption of aircraft fuel when airplane is on ground waiting for flying, prolonging service life of own costly air conditioning system of airplane (APU), lowering pollution in airplane.

The invention relates to a novel energy-saving non-circular and non-cylindrical series ore heating furnace and a calcium carbide furnace. The series furnace is put forward on a basis of the study of deep smelting principles of a plurality of smelting types and on a basis of a plurality of professional factors and has great potential for generalization, and can be used for smelting calcium carbide, yellow phosphorus, silicon series, manganese series, chromium series, nickel series, ferrotungsten, ferrotitanium and other metal alloys or ferroalloy in an open or sealed manner. If cooperated withother integrated assorted apparatuses and a digital operation mode, the series furnace can greatly reduce 5-15 percent per ton of electricity consumption for various smelting and increase the yield by 5-30 percent in the case of using domestic common raw materials, can use raw materials with lower grade for smelting so as to meet various smelting electricity consumption indexes required currentlyin China and is beneficial for the safe and stable operation of an environment-friendly dedusting apparatus and the implementation of unmanned-control smelting technology of ore heating furnaces, andhas great development potential when used on various large sealed ore heating furnaces of over 25,000 kw.

The invention relates to an air conditioner and a control method and device thereof. The control method comprises the steps that the environment temperature T of the air conditioner is detected; according to the size relation of the environment temperature T and the preset temperature, the running frequency F of an air conditioner compressor and the air speed of an air conditioner draught fan are determined; the compressor is controlled to run according to the determined running frequency F, and the draught fan runs according to the determined air speed. According to the size relation between the environment temperature T of the air conditioner and the preset temperature, the running frequency F of the air conditioner compressor and the air speed of the air conditioner draught fan are determined, and therefore on the premise of meeting the comfort air supply, the air conditioner can run in an energy-saving manner.

The invention relates to a double-cold source fresh air handling unit, which comprises a fresh air handling unit shell, wherein a compressor, a first condenser, a second condenser, a throttling device, an evaporimeter, an air inlet, a filter, an air outlet, a chilled water supply water return pipe and a surface air cooler are arranged in the fresh air handling unit shell; the compressor, the first condenser, the second condenser, the throttling device and the evaporimeter are connected sequentially through a copper pipe so as to form a cold source system of the fresh air handling unit; and the surface air cooler is connected with an external central air conditioning cold source system through the chilled water supply water return pipe. The double-cold source fresh air handling unit has the advantages that (1) the double-cold source fresh air handling unit is provided with the independent cold source system, in a transition season, a central air conditioning cold source stops working, and when an air conditioning ventilation system fresh air is operated in an energy-saving way, a self cold source can be applied to carry out dehumidification on fresh air, so that the phenomena of indoor moisture and mustiness are avoided; and (2) when the fresh air handling unit is used, the fed fresh air supplied in the transition season has moderate temperature, and the comfort of indoor temperature in the transition season is ensured.

The invention discloses an assembling method for a fiber filtration cloth filter and a sewage treating method. According to the sewage treating method, fiber filtration cloth is employed as a filter layer; a filtering rotating drum coated by the fiber filtration cloth is vertically arranged in an enclosed pressure vessel; sewage entering the pressure vessel enters the filtering rotating drum after filtration by the fiber filtration cloth and is then discharged from a water outlet; the pressure vessel is employed to increase the flow of sewage passing through the fiber filtration cloth, so work efficiency is improved; and a backwashing apparatus installed at the side of the filtering rotating drum is used for backwashing, and the filtering rotating drum rotates under the driving of a drive unit during backwashing, so 360-degree backwashing of the filtering rotating drum and the fiber filtration cloth is realized. Since a filtering disc is arranged in a shell, influence of the external environment is avoided; due to vertical arrangement of the filtering rotating drum, the fiber filtration cloth filter has the advantages of a small occupied land area, low investment, a simple transmission mechanism, low power of the drive unit and conservation of energy. The fiber filtration cloth filter has good adaptability and is easy to install and adaptive to filtering conditions on various occasions.

The invention provides an air conditioner chilled water temperature adjustment operation method based on the outdoor temperature and humidity. The method comprises the specific steps that (1) the indoor temperature and humidity are acquired, and the indoor moisture dispersed amount is calculated according to the indoor temperature, the indoor humidity and the indoor water body temperature; (2) an indoor temperature threshold value range and an indoor humidity threshold value range are set; (3) the main air conditioner terminal blast capacity and inlet and outlet temperatures and humidity are acquired, and a terminal equipment heat-humidity exchange formula is fitted; (4) the temperature and relative humidity of outdoor air of a target building are acquired; (5) the maximum outlet water temperature of chilled water under the situation that a target is met is obtained through calculation through the acquired parameters and input data; (6) the indoor temperature and relative humidity are acquired after a period of time of operation; and (7) whether the indoor temperature and humidity meet temperature and humidity threshold value requirements or not is judged, the outlet water temperature and/or indoor moisture dispersed data are/is continuously adjusted until the requirements are met, accordingly the air conditioner indoor temperature and humidity requirements can be basically met, and an air conditioning system has the effects of comfort and energy conservation.

A washing/drying machine performing the drying operation efficiently while shortening the drying time. The washing/ drying machine is provided with a tank (11) for storing used water, and the water in the tank (11) is circulated and used for dehumidifying the air circulating through a drying air duct (20). Since the water in the tank (11) is circulated, a large quantity of dehumidification water can be supplied with priority given to dehumidification efficiency. The quantity of water being circulated (the quantity of cooling water (dehumidification water)) is decreased relatively in the first half of the drying process, and increased relatively in the second half of the drying process. Consequently, drying efficiency is enhanced during the drying the operation and the drying operation time can be shortened.

A fresh air conditioning unit capable of realizing energy recovery and free cooling comprises a fresh air system and an air exhausting system, wherein a circulating pump is arranged between the fresh air system and the air exhausting system, an inlet of the circulating pump is connected with an exhausting system water pond through a pipeline, an outlet of the circulating pump is connected with an inlet of a first energy recovery fresh air heat exchanger through a pipeline, an outlet of the first energy recovery fresh air heat exchanger is connected with a liquid distributor through a pipeline to form a water or aquatic solution circulating system for realizing full heat energy recovery and free cooling circulation; and a water or aquatic solution atomizing system for humidifying the fresh air is arranged inside the fresh air system. Due to the adoption of the fresh air conditioning unit, the high-efficient energy conservation can be realized by adequately playing the effects of the energy recovery, free cooling and energy consumption reduction in a reheating process through appropriate running adjusting mechanism under different weather conditions.

The invention relates to an anti-condensation refrigerating system and method for a refrigerator and the refrigerator. The system comprises a controller, a humidity sensor, a solenoid valve, an evaporator, a compressor, two or more condensers in serial connection, an anti-condensation pipe and a capillary tube, wherein the evaporator, the compressor, the condensers, the anti-condensation pipe and the capillary tube are connected orderly in sequence to form a refrigerating circulation loop. The solenoid valve comprises an inlet and a plurality of outlets. The inlet of the solenoid valve communicates with a refrigerant outlet of the compressor. The multiple outlets of the solenoid valve communicate with a plurality of refrigerant outlets of the condensers in a one to one correspondence mode. The humidity sensor is used for collecting a humidity value of the ambient environment of the refrigerator and sending the collected humidity value to the controller. The controller is used for receiving the humidity value and controlling the inlet and one of the outlets of the solenoid valve to be opened according to the humidity value or controlling all the outlets of the solenoid valve to be closed according to the humidity value. On-off states of the multiple outlets of the solenoid valve are controlled according to the humidity value fed back by the humidity sensor, accordingly, the temperature of an anti-condensation pipe is adjusted, and the anti-condensation refrigerating system takes account of anti-condensation and energy saving.

The invention relates to a mobile heat pipe heating valley power solid heat storage and heating device, which comprises a solid heat storage pile, a water heating cylinder and a heat exchanger, wherein electric heating pipes and heat pipe tanks are arranged on the solid heat storage pile, a heat pipe connecting channel is formed in each heat pipe tank; the heat pipes are connected in the heat pipe tanks in a sliding manner; the other ends of the heat pipes are arranged on the water heating cylinder; the ends of the heat pipes, connected with the water heating cylinder, are higher than the other ends of the heat pipes, connected in the heat pipe tank; moving wheels are arranged at the lower end of the solid heat storage pile; the moving wheels are connected with a moving connecting rod which is connected with a variable-frequency motor; the electric heating pipes are arranged on the water heating cylinder; the water inlet and outlet pipes of the water heating cylinder are connected with a plate type heat exchanger; a variable-frequency is arranged on the water inlet pipe. According to the device, night valley power can be converted to thermal energy to be stored in the solid heat storage pile and all day heating can be realized through heat taking and exchange measures.

The invention discloses a composite air conditioning system integrating an air-blowing air conditioner with a radiation tail end and belongs to the technical field of air conditioners. The composite air conditioning system comprises an air conditioner external unit, a water tank, a heat exchanger, a fan coil, an air conditioner internal unit, a fresh air supply port formed indoors and the capillary radiation tail end with a water distributor mounted at the head end and a water collector mounted at the tail end. The composite air conditioning system integrates a Freon system of a conventional air conditioner with a water system of the radiation tail end and adopts a refrigerating unit to realize independent or combined operation of the air-blowing air conditioner and the radiation tail end; and by means of adding the heat exchanger in a refrigerating water circulating loop, load of the fan coil is lowered, dehumidification effect is enhanced, moisture condensation of a fresh air supply pipe is avoided, and energy-saving efficiency and construction comfort are improved. The technique of the composite air conditioning system can be used for manufacturing of new air conditioners and can be used for updating an existing Freon heat pump to the composite air conditioning system.