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67results about How to "Solve the problem of low temperature" patented technology

Control method of VAV (variable air volume) air-conditioning system

The invention provides a control scheme of a VAV (variable air volume) air-conditioning system. A neural network predictive control method is used for a tail end VAV-BOX and an air-conditioning unit, thus the hysteresis characteristic of a VAV system can be overcome, the control accuracy is improved, the resonance phenomena of an actuating mechanism can be greatly reduced, the energy-saving effect is improved by above 13%, and the control parameter tuning problem in the project is solved. A pressure independent cascade stage predictive control method is used for the tail end VAV-BOX, thus thecontrol accuracy can also be improved. The air-conditioning unit is provided with four control loops and can automatically select a static pressure control or total air volume control policy with adjustable setting static pressure by using an all-condition integrated control technology, thus the predictive control on a fan can be realized; the primary air volume of all the tail end VAV-BOXes can be detected and the air supply temperature can be adjusted according to the operation condition, thus the problem of too low temperature in partial air-conditioning area in the lowest fresh air operation is solved; the cascade stage predictive control method is adopted for a fresh air ratio control loop, thus the accurate control on the fresh air ratio can be realized and the energy-saving level can be further improved.
Owner:BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE +1

Solar and ground source heat pump combined energy supply system and operation control method thereof

The invention relates to a solar and ground source heat pump combined energy supply system and an operation control method thereof. The solar and ground source heat pump combined energy supply system is technically characterized by comprising a solar heat collecting system, a ground source heat pump system and a buried pipe system and being composed of plate heat exchangers, a pump set and switches. The operation control method of the solar and ground source heat pump combined energy supply system includes the steps of calculating equipment parameters of the solar and ground source heat pump combined energy supply system to construct the solar and ground source heat pump combined energy supply system, and carrying out operation control over the heat collecting process, the heat storing process and the heat supplementing process of the solar and ground source heat pump combined energy supply system. Hot water supply requiring time periods of domestic hot water requiring users are analyzed, and by controlling relevant switches and equipment, solar energy and a ground source heat pump are combined to supply energy; and heat in a solar heat collector can be conveyed into soil through the buried pipe heat exchanger system to conduct the heat supplementing process on the soil during time periods when the domestic hot water requiring users do not need hot water supply, and thus the soil thermal imbalance problem caused by long-term operation of an existing ground source heat pump is solved.
Owner:ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3

High-glowing-filament high-CTI (comparative tracking index) super-tough flame-retardant PBT/PC (polybutylene terephthalate/polycarbonate) alloy material and preparation method thereof

The invention relates to a high-glowing-filament high-CTI (comparative tracking index) super-tough flame-retardant PBT / PC (polybutylene terephthalate / polycarbonate) alloy material and a preparation method thereof. The material is prepared from the following raw materials in parts by weight: 15-70 parts of PBT, 10-25 parts of PC, 10-25 parts of compound toughener, 5-20 parts of bromine flame retardant, 3-10 parts of phosphorus-nitrogen flame retardant, 2-5 parts of inorganic flame-retardant synergistic agent, 0.1-0.5 part of ester exchange inhibitor, 0.1-0.5 part of anti-dripping agent PTFE (polytetrafluoroethylene), 0.1-0.5 part of lubricant and 0.1-0.5 part of antioxidant. The PBT / PC alloy material has excellent comprehensive properties; and the ASTM (American Society for Testing and Materials) notch impact strength is greater than 600 J / m, the flame retardancy reaches UL94V-0, the glowing filament temperature GWIT is greater than 850 DEG C, and the CTI is greater than 600V, thereby greatly widening the application range of the PBT / PC alloy material.
Owner:上海日之升科技有限公司

High-temperature brazing filler metal preparation method and brazing process for silicon carbide ceramic and composite materials thereof

The invention discloses a high-temperature brazing filler metal preparation method and a brazing process for silicon carbide ceramic and composite materials thereof. High-temperature brazing filler metal for the silicon carbide ceramic and the composite materials thereof comprises the following raw materials in proportions: 20-30 wt% of high-purity titanium, and 70-80 wt% of high-purity silicon; and the adding mass of boron carbide or silicon carbide is 0-10 wt% of the total mass of high-purity titanium and high-purity silicon. A silicon carbide brazing joint is prepared by using a vacuum brazing process (the brazing temperature is 1350-1430 DEG C; the insulation time is 5-45 min; and the brazing seam thickness is 10-200 microns). When the welding temperature is 1380 DEG C, the insulation time is 20 min, the brazing seam thickness is 30 microns, and the B4C adding quantity is 5 wt%, the optimal brazing joint is obtained, the maximum room-temperature shearing strength of the joint reaches 114 MPa, and high practical value is achieved.
Owner:HEFEI UNIV OF TECH

Carbon dioxide capturing equipment

The invention relates to carbon dioxide capturing equipment and belongs to the field of carbon dioxide gas treatment. According to the equipment, a fan is communicated with an absorption tower by virtue of a pipeline, the bottom of the adsorption tower is sequentially communicated with a liquid rich pump, a rich and lean liquid heat exchanger, a heater and a desorber top by virtue of pipelines, and the bottom of the desorber is sequentially communicated with the rich and lean liquid heat exchanger, a liquid lean pump, a condenser A and the top of the adsorption tower by virtue of pipelines; a filter is arranged on a pipeline which is used for delivering rich and lean liquids; a heating element is connected between the rich and lean liquid heat exchanger and the bottom of the desorber; recovery devices are respectively arranged at the top ends of the adsorption tower and the desorber. In the operating process of the equipment, impurities can be removed, and the heat exchanger is hardly blocked; the temperature of the solution which is preheated and enters into the desorber is appropriate.
Owner:718TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Solid lubricating film and preparation method thereof

The invention discloses a solid lubricating film. The solid lubricating film is characterized by being prepared from the following components in percentage by weight: 36 to 75 percent of a solid lubricant, 10 to 30 percent of talcum powder, 10 to 30 percent of an adhesive, 5 to 20 percent of an improver and 1 to 5 percent of a curing agent; the solid lubricant is prepared from at least two kinds of graphite, boron nitride and molybdenum disulfide; the improver is light magnesium oxide; the adhesive is phenolic resin; the curing agent is urotropin. The invention also discloses a preparation method of the solid lubricating film. According to the scheme, by using the phenolic resin as a carrier, and using the polyethylene glycol 200 as a dispersing agent, the solid lubricating film has a good wetting effect; on the basis of the characteristic of forming gradient lubrication by adding the molybdenum disulfide, the graphite, the boron nitride, the talcum powder and the like, the light magnesium oxide is added, so that the solid lubricating film has high temperature resistance, low temperature resistance, corrosion resistance and good thermal conductivity; meanwhile, the solid lubricating film has unique properties of better filling performance, relatively-high activity, relatively-high adsorption capacity, no toxicity. no harm and the like.
Owner:北京优材百慕航空器材有限公司

Measuring method of trace oxy-compound in liquid-phase propylene

The invention discloses a measuring method of trace oxy-compound in liquid-phase propylene. The measuring method comprises the following steps of heating the liquid-phase propylene to be measured, and controlling the temperature at 90 DEG C to 120 DEG C; feeding the heated propylene into an oxy-compound absorption device through a flow-rate control device to obtain an absorption sample; and detecting the content of the oxy-compound in the absorption sample through the headspace gas chromatography. By utilizing the technical scheme, a constant-temperature bath device is used for heating the liquid-phase propylene, so that the low-temperature difficulty of the sample in daily measurement can be solved; the flow-rate control device is used for making the gas absorption process more stable and the absorption more adequate, so that the trace oxy-compound contained in the liquid-phase propylene is effectively concentrated; and integrating the technical features, the content of the trace oxy-compound in the liquid-phase propylene can be accurately measured by utilizing the headspace gas chromatography in the working field with low level of experimental instruments.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2

Oil temperature control system of hydraulic oil tank

The invention relates to an oil temperature control system of a hydraulic oil tank. The oil temperature control system of the hydraulic oil tank comprises the hydraulic oil tank provided with a hydraulic oil pump; an oil outlet pipeline of the hydraulic oil pump is provided with an overflow valve; an electric heater is further arranged in the hydraulic oil tank; the oil outlet pipeline is provided with a heat exchanger; an oil inlet A of the heat exchanger communicates with an oil outlet of the hydraulic oil pump; an oil outlet B of the heat exchanger communicates with the hydraulic oil tank; in addition, a water tank is further arranged and internally provided with an electric water pump; a water outlet of the electric water pump communicates with a water inlet C of the heat exchanger through a pipeline; and a water outlet D of the heat exchanger communicates with the water tank. The oil temperature control system of the hydraulic oil tank heats hydraulic oil through the electric heater, and the problem that the temperature of the hydraulic oil is too low is solved; the heat exchanger and the water pump are adopted, and the oil temperature of the hydraulic oil tank is fast and accurately controlled; and while the test condition is guaranteed, time is saved and work efficiency is improved. The hydraulic oil pump and an oil return filter are adopted for performing forced filtration on the hydraulic oil of the hydraulic oil tank, pollution of a hydraulic system is avoided, the service life of the system is prolonged, and cost is reduced.
Owner:ANHUI HELI CO LTD

Airflow horizontal movement type drying room with dehumidification free of influencing airflow circulation

The invention discloses an airflow horizontal movement type drying room with dehumidification free of influencing airflow circulation. The airflow horizontal movement type drying room with dehumidification free of influencing airflow circulation comprises a heating chamber and a material chamber. A return air opening is provided with an air return stopping area. The drying room is provided with an air intake facility and a dehumidification facility. The air intake facility is an air inlet communicating with the outside of the drying room or an air intake draught fan or the combination of the air inlet and the air intake draught fan. The dehumidification facility is a dehumidification opening leading to the outside of the drying room or a dehumidification draught fan or the combination of the dehumidification opening and the dehumidification draught fan. The air inlet is arranged in the heating chamber and located on the portion, in the area between an upper edge and a lower edge of the air return stopping area, of an outer wall. The dehumidification opening is arranged in the heating chamber and located on the portion, between the upper edge and the lower edge of the air return opening, of the outer wall. According to the airflow horizontal movement type drying room with dehumidification free of influencing airflow circulation, the manner that an obstacle is arranged on an airflow circulation passageway is adopted, a high negative pressure is generated on the area behind the obstacle, and therefore more areas in the drying room are at positive pressure; and in this way, the dehumidification opening can be directly arranged on the outer wall, and dehumidification can be still smoothly conducted.
Owner:张博琳

Solar vehicle-mounted auxiliary air conditioning system

The invention relates to the technical field of semiconductor refrigeration and heating, in particular to a solar vehicle-mounted auxiliary air conditioning system which comprises a solar power module, a gear control module, a semiconductor temperature control module, at least one set of water circulation module and an anti-freezing solution circulation module. The semiconductor temperature control module at least comprises a heating device or a refrigerating device which is formed by stacking a hot end water cooling head, a semiconductor assembly and a cold end water cooling head; the gear control module is connected with the solar power supply module and the semiconductor temperature control module, and is used for controlling the electric energy of the solar power supply module to be transmitted to part and all of the semiconductor assembly according to certain electric power parameters; the solar vehicle-mounted auxiliary air conditioning system has the beneficial effects that the arranged semiconductor temperature control module can rapidly assist the automobile air conditioner to achieve refrigeration and heating, and the arranged gear control module can control the semiconductor temperature control module according to needs; and the semiconductor temperature control module is convenient to control temperature, good in refrigeration effect and high in stability and safety, and the problem that the temperature in the vehicle is too low in winter can be solved.
Owner:JILIN UNIV

Special primitive ecological microbial farming method for pigs

The invention relates to a special primitive ecological microbial farming method for pigs. The special primitive ecological microbial farming method comprises the following steps: concreting or digging a square pit (1), and digging a sewage pool (2) in one side of the square pit (1); digging row-shaped channels (3) in the bottom of the square pit (1), and digging a converging channel (4) in a junction of the two sides of the row-shaped channels (3); enabling the row-shaped channels (3) to be filled with a replaceable inorganic absorbent material (5); laying an organic fiber material (6) adsorbed with aerobic microorganisms on the square pit (1), and compacting by treading; laying another layer of the organic fiber material (6), and compacting by treading; on the basis of the step 5, diluting a traditional Chinese medicinal disease-preventing agent and serum lactate into 600 times of water, fermenting for five days, pouring into the pit in the amount of 0.4 kilograms per square meter, and farming the pigs into the pit. By the special microbial farming method, manures and urine excreted by the pigs can be effectively decomposed by active microbes, so that the pigs can grow healthily and rapidly.
Owner:山西海洲生物科技有限公司

Control method and device for refrigeration fan of refrigerator, and refrigerator

The embodiment of the invention provides control method and device for a refrigeration fan of a refrigerator, and the refrigerator, belongs to the technical field of refrigeration, and solves the problems that in the prior art, when a compressor of an air direct-cooling type refrigerator is started up, the temperature of a refrigeration chamber or a freezing chamber is low. The method comprises the steps of when the compressor is started up, judging whether the temperature of the freezing chamber is larger than the shutdown temperature of the freezing chamber or not; when the temperature of the freezing chamber is larger than the shutdown temperature of the freezing chamber, determining a difference value between the temperature of the freezing chamber and the shutdown temperature of the freezing chamber to be a first temperature difference; determining a difference value between the temperature of the refrigeration chamber and the shutdown temperature of the refrigeration chamber to be a second temperature difference; and according to a comparison result between the first temperature difference and the second temperature difference, controlling the start-stop proportion of the refrigeration fan, wherein the start-stop proportion is the proportion of the startup time and the shutdown time of the refrigeration fan within a preset period. The control method and device for the refrigeration fan of the refrigerator provided by the embodiment of the invention are suitable for controlling the refrigeration fan.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD +2

Water-soluble low-crosslinking polymaleic anhydride-diisobutylene copolymer salt dispersant and preparation method thereof

The invention discloses a technological method for preparing water-soluble low-crosslinking polymaleic anhydride-diisobutylene copolymer salt dispersant. According to the dispersant, a third monomer is added as a cross-linking agent for achieving light crosslinking of a system in the polymerization process, and the usability of the polymerization system is upgraded. The technology that saponification is conducted immediately after the polymerization, organic solvent is removed through the oil-water separation and membrane separation technologies, the defects that in a traditional technology, namely polymerization, distillation and saponification, energy is consumed and the efficiency is low are avoided, the preparation process is simplified, and the preparation efficiency is remarkably improved. The dispersant obtained through the method has the advantages that the water solubility and light crosslinking characteristic are achieved simultaneously, and the crosslinking degree reaches 16.8%-22.7%; the operating temperature is raised, and the glass-transition temperature of polymer reaches 78.5 DEG C-82.5 DEG C; the dispersion force of the system is 95-130 mg / MnO<2> per 100 ml of sample solutions, wherein the concentration of the sample solutions is 0.025%. Therefore, the water-soluble low-crosslinking polymaleic anhydride-diisobutylene copolymer salt dispersant has a good application prospect in such fields as solution polymerized styrene-butadiene rubber, coating dispersion technology and leather tanning agent dispersion technology.
Owner:宜兴市湖景化工有限公司 +1

Backwater control method used for hot-water project

The invention discloses a backwater control method used for a hot-water project and belongs to the field of hot-water project control. The backwater control method includes acquiring water temperature of a thermal-storage water tank and temperature of a backwater pipe through a temperature sensor respectively; responding the water temperature of the thermal-storage water tank and the temperature of the backwater pipe, and comparing the temperature of the backwater pipe with set backwater temperature; judging whether to start backwater control or stop backwater or perform cyclic backwater or not; starting backwater when the interior temperature of the thermal-storage water tank is higher than the backwater temperature and the temperature of the backwater pipe is lower than the set temperature and stopping backwater until the interior temperature of the backwater pipe is higher than the temperature; and starting backwater by a device according to a set time period when the interior temperature of the thermal-storage water tank is lower than the backwater temperature and the interior temperature of the backwater pipe is lower than the set temperature, and stopping cyclic backwater by the backwater device until the interior temperature of the backwater pipe is higher than the set temperature. By the use of the backwater control method, excessively-low interior temperature of the backwater pipe is overcome, and electricity waste caused by continuous backwater is avoided.
Owner:JIANGSU JINGCHUANG ELECTRONICS

Control method of VAV (variable air volume) air-conditioning system

The invention provides a control scheme of a VAV (variable air volume) air-conditioning system. A neural network predictive control method is used for a tail end VAV-BOX and an air-conditioning unit, thus the hysteresis characteristic of a VAV system can be overcome, the control accuracy is improved, the resonance phenomena of an actuating mechanism can be greatly reduced, the energy-saving effect is improved by above 13%, and the control parameter tuning problem in the project is solved. A pressure independent cascade stage predictive control method is used for the tail end VAV-BOX, thus thecontrol accuracy can also be improved. The air-conditioning unit is provided with four control loops and can automatically select a static pressure control or total air volume control policy with adjustable setting static pressure by using an all-condition integrated control technology, thus the predictive control on a fan can be realized; the primary air volume of all the tail end VAV-BOXes can be detected and the air supply temperature can be adjusted according to the operation condition, thus the problem of too low temperature in partial air-conditioning area in the lowest fresh air operation is solved; the cascade stage predictive control method is adopted for a fresh air ratio control loop, thus the accurate control on the fresh air ratio can be realized and the energy-saving level can be further improved.
Owner:北京建筑工程学院 +1

Control method of humidification lower-air-outlet air conditioner and humidification lower-air-outlet air conditioner

The invention provides a control method of a humidification lower-air-out air conditioner and the humidification lower-air-out air conditioner. The control method comprises the steps that the environment humidity and the air temperature in the middle of the bottom of a room are obtained, and the humidification rotating speed is adjusted according to the environment humidity; if the air temperature in the middle of the bottom of the room is lower than the preset temperature, the number of heaters is increased; and if the air temperature in the middle of the bottom of the room is higher than the preset temperature, the number of the heaters is decreased. According to the control method of the humidification lower-air-out air conditioner, the environment humidity is monitored through a humidity sensor, lower air outlet of the air conditioner is controlled through multiple temperature sensors and the multiple heaters, the temperature sensors installed at different heights are used for controlling different numbers of heaters to conduct heating through a warm air control module according to the air temperatures of different heights of the room, and meanwhile, the humidifying rotating speed of a fan motor is adjusted through the environment humidity measured by the humidity sensor, so that the problems that air is dry and the temperature of the bottom of the room is too low are solved on the premise that it is ensured that the overall temperature of the room is relatively stable.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

Refrigerator refrigeration method and device

The invention discloses a refrigerator refrigeration method and device and relates to the technical field of refrigerator refrigeration. The refrigerator refrigeration method comprises the following steps of (1) monitoring the temperatures of chambers of a refrigerator in real time; (2) acquiring and processing monitoring data; (3) acquiring control commands and driving a refrigeration motor to act, wherein the actions include responding to a refrigeration request of the chamber a and turning on a through hole type electric air door and the refrigeration motor; responding to a non-refrigeration request of the chamber a and a refrigeration request of the chamber b, turning off the through hole type electric air door and turning on the refrigeration motor; and responding to the non-refrigeration requests of the chambers a and b, and turning off a compressor and the refrigeration motor. Through rational control over the start and stop time of the refrigeration motor, the problem that thetemperatures of the chambers of the refrigerator are low is solved, the problem that cold leakage of the chambers is caused by the through hole type electric air door can be effectively prevented. Norma use of the through hole type electric air door is ensured. The quality of the whole refrigerator is improved. The refrigerator can be used in cooperation with the through hole type electric air door for extensive application.
Owner:CHANGHONG MEILING CO LTD

Control method for downward air outlet air conditioner and downward air outlet air conditioner

ActiveCN112984724AStable temperatureSolve the low temperature at the bottom of the roomMechanical apparatusSpace heating and ventilation safety systemsEngineeringMechanics
The invention provides a control method for a downward air outlet air conditioner and the downward air outlet air conditioner. The control method comprises the following steps that the air temperature in the middle of the bottom of a room is acquired, and the number of heaters is controlled according to the air temperature in the middle of the bottom of the room; if the air temperature in the middle of the bottom of the room is lower than a preset temperature, the number of the heaters is increased according to the air temperature at the lower end of the bottom of the room; and if the air temperature in the middle of the bottom of the room is higher than a preset temperature, the number of the heaters is reduced according to the air temperature at the upper end of the bottom of the room. According to the control method for the downward air outlet air conditioner, downward air outlet of the air conditioner is controlled through a plurality of temperature sensors and the plurality of heaters, and the temperature sensors installed at the different heights are used for acquiring air temperatures of different heights of the room, so that according to the air temperatures of different heights of the room, a warm air control module controls different numbers of the heaters to perform heating, and the problem that the temperature of the bottom of a room is too low when a cabinet air conditioner performs heating in winter is solved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

A control method for a bottom air conditioner and a bottom air conditioner

The present invention provides a control method of a bottom air conditioner and a bottom air conditioner. The control method includes the following steps: acquiring the air temperature in the middle of the bottom of the room, and then controlling the current of the resistance coil according to the air temperature in the middle of the bottom of the room; The air temperature in the middle is lower than the preset temperature, and the current of the resistance coil is increased according to the air temperature at the lower end of the room bottom. If the air temperature in the middle of the bottom of the room is higher than the preset temperature, the current of the resistance coil is reduced according to the air temperature in the upper part of the bottom of the room. The control method of the air conditioner with the lower air outlet provided by the present invention controls the lower air outlet of the air conditioner through a plurality of temperature sensors and resistance coils, and uses the temperature sensors installed at different heights to obtain the air temperature at different heights in the room, so that the heating control module According to the air temperature at different heights in the room, the current flowing through the resistance coil is controlled, so that the heater can be heated, so as to solve the problem that the temperature at the bottom of the room is too low when the cabinet air conditioner is heating in winter.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

Cooling liquid control system

The invention relates to a cooling device of injection moulding equipment, and specifically relates to an injection moulding machine cooling system. The system comprises a cooling water inlet port that is connected to the cooling part of an injection moulding machine, a cooling water outlet port, and a refrigerating machine for refrigerating the cooling water. The system also comprises a water storage tank for storing cooling water, a feed pump that is connected to the inlet port and the water storage tank, and a controller for controlling on-off of the refrigerating machine, the temperature sensors of the controller are fixed in the inlet port and the channel of the water storage tank, the outlet port is connected to the water storage tank, and the water inlet and the water outlet of the refrigerating machine are both communicated with the water storage tank. The provided cooling system can solve the problems that in the conventional injection moulding machine cooling system, the temperature of the cooling water is too low, and the energy is wasted, and can provide cooling water with a proper temperature.
Owner:公元管道(重庆)有限公司

A control method of a water-washing down-flow air conditioner and a water-washing down-flow air conditioner

The present invention provides a control method of a water-washing down-flow air conditioner and a water-washing down-flow air conditioner, including selecting a warm air function and / or a water washing function according to needs; if the water washing function is selected, the water washing speed is adjusted according to the ambient humidity; Wind function, get the air temperature in the middle of the bottom of the room; if the air temperature is lower than the preset temperature, increase the number of heaters, otherwise decrease the number. The control method of the water-washed air-outflow air conditioner provided by the present invention monitors the ambient humidity through a humidity sensor, uses multiple temperature sensors and multiple heaters to control the air-outflow of the air conditioner, and uses temperature sensors installed at different heights to obtain The air temperature at different heights in the room enables the heating control module to control different numbers of heaters for heating according to the air temperature at different heights in the room. At the same time, the measured ambient humidity adjusts the washing speed to solve the problem of dry air, high concentration of PM2.5 and the temperature at the bottom of the room low problem.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

Optical switch loss measurement and calibration method in a distributed optical fiber temperature measuring device

The invention relates to a method for measuring and calibrating optical switch loss in a distributed optical fiber temperature measuring device. The method includes: 1) collecting Stokes light at a position with a distance of 1 from the starting position of temperature measurement at a set temperature signal and the anti-Stokes optical signal, l is greater than the distance between the position of the optical switch and the temperature measurement initial position; 2) according to the temperature demodulation formula and the Stokes optical signal and anti-Stokes optical signal collected in step Tox light signal, calculate the calibration temperature T 0 The ratio of the actual Stokes light signal to the anti-Stokes light signal; 3) according to the calibration temperature T 0 The initial value of the ratio of the two curves of lower Stokes and anti-Stokes light and the ratio calculated in step 2) to obtain the optical switch loss coefficient. The calibration method is: using the above measurement method to obtain the loss coefficient of the optical switch, and using the loss coefficient of the optical switch to correct the calibration curve after the optical switch of the distributed optical fiber temperature measuring device. The invention improves the temperature measurement accuracy of each point along the temperature optical fiber.
Owner:XUCHANG XJ SOFTWARE TECH +3

A control method of an air conditioner under humidification and an air conditioner under humidification

The present invention provides a control method of a humidified air outlet air conditioner and a humidified air outlet air conditioner, including obtaining ambient humidity and air temperature in the middle of the bottom of a room, and adjusting the humidification speed according to the ambient humidity; if the air temperature in the middle of the bottom of the room is lower than a preset temperature temperature, increase the number of heaters. If the air temperature in the bottom middle of the room is higher than the preset temperature, reduce the number of heaters. The control method of the air-conditioning under humidification provided by the present invention monitors the ambient humidity through a humidity sensor, uses multiple temperature sensors and multiple heaters to control the airflow under the air-conditioning, and uses temperature sensors installed at different heights to make The heater control module controls different numbers of heaters for heating according to the air temperature at different heights in the room, and uses the ambient humidity measured by the humidity sensor to adjust the humidification speed of the fan motor to ensure that the overall temperature of the room is relatively stable. The problem of low temperature at the bottom of the room.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

A control method of a down-flow air conditioner and a down-flow air conditioner

The present invention relates to the technical field of air conditioners, and provides a control method for a down-flow air conditioner and a down-flow air conditioner. The control method includes the following steps: calculating an actual near-ground temperature difference and a coil temperature according to a set temperature, a near-ground temperature and an indoor temperature. According to the ratio of the actual near-ground temperature difference to the coil temperature, the corresponding number of light-emitting bulbs are controlled for heating; wherein, the ratio of the near-ground temperature difference to the coil temperature is positively correlated with the number of light-emitting light bulbs controlled by the heater control module. In the control method of the down-flow air conditioner provided by the present invention, the near-ground temperature and the coil temperature are respectively detected by the warm air temperature sensor and the coil temperature sensor, and the actual near-ground temperature and the coil temperature are obtained according to the set temperature of the room, the near-ground temperature and the coil temperature. The ratio of the ground temperature difference to the coil temperature is used to control the corresponding number of light bulbs for heating, which improves the indoor air quality and solves the problem that the temperature at the bottom of the room is too low when the cabinet air conditioner is heated in winter.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

Air speed control method of lower air outlet air conditioner and lower air outlet air conditioner

The invention provides an air speed control method of a lower air outlet air conditioner and the lower air outlet air conditioner. The method comprises the steps that the near-earth temperature is acquired and is matched with a preset near-earth temperature range; if the acquired near-earth temperature is within the preset temperature range, a coil pipe temperature is acquired; the temperature difference between the coil pipe temperature and the near-earth temperature is matched with multiple preset temperature differences, and the air speed of the lower air outlet air conditioner is adjusted according to the fan rotating speed corresponding to the preset temperature difference range where the temperature difference is located. According to the air speed control method of the lower air outlet air conditioner, the room bottom temperature condition is determined according to the near-earth temperature, when the room bottom temperature is low, the coil pipe temperature is acquired, the running state and the room bottom temperature are considered comprehensively according to the coil pipe temperature and the near-earth temperature, the air speed of the lower air outlet air conditioner is adjusted according to the fan rotating speed corresponding to the preset temperature difference range where the temperature difference is located, and the problem that the room bottom temperature is too low during heating by a cabinet air conditioner in winter is solved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

A control method of a bottom air fresh air air conditioner and a bottom air fresh air air conditioner

The present invention provides a control method for a bottom-flow fresh air air conditioner and a bottom-flow fresh air air conditioner, including selecting a warm air function and / or a fresh air function as required; if the fresh air function is selected, controlling the number of first heaters according to the temperature of the fresh air; If the warm air function is selected, the air temperature in the middle of the bottom of the room is obtained; if the air temperature is lower than the preset temperature, the number of the second heater is increased, otherwise, the number is decreased. The control method of the fresh air conditioner with the lower air outlet provided by the present invention monitors the temperature of the fresh air and the air temperature through the temperature sensor, controls the lower air outlet and the fresh air of the air conditioner by using the temperature sensor, and uses the temperature sensors installed at different heights to obtain the temperature difference of the room. High air temperature, so that the fresh air control module and warm air control module control different numbers of first heaters and second heaters for heating according to the fresh air temperature and the air temperature of different heights in the room, so as to improve the indoor air quality and solve the temperature problem at the bottom of the room low problem.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

Semiconductor refrigeration and heat dissipation device

A semiconductor refrigeration and heat dissipation device is simple and reasonable in structural design, the heat dissipation function can be greatly improved while the temperature of the refrigeration area is well controlled, and a cold conduction sheet can be conveniently detached and replaced. The semiconductor refrigeration and heat dissipation device comprises a semiconductor refrigeration block, and a heat dissipation copper sheet, heat dissipation sheets and a heat dissipation draught fan are sequentially and fixedly arranged at the upper end of the semiconductor refrigeration block. Acold conduction copper block is fixedly arranged at the lower end of the semiconductor refrigeration block, a cold conduction sheet is arranged at the lower end of the cold conduction copper block, and the cold conduction copper block and the cold conduction sheet are in sliding connection through a sliding block and a T-shaped sliding groove in the bottom end of the sliding lock. The sliding block, a temperature detector and a temperature induction controller are fixedly arranged at the bottom end of the cold conduction copper block, and the temperature detector and the temperature inductioncontroller are located on the two sides of the sliding block correspondingly. A plurality of heat dissipation holes are evenly formed in the heat dissipation sheets.
Owner:无锡艾迪尔家居有限公司

A kind of culture method of original ecology special strain of live pig

The invention relates to a special primitive ecological microbial farming method for pigs. The special primitive ecological microbial farming method comprises the following steps: concreting or digging a square pit (1), and digging a sewage pool (2) in one side of the square pit (1); digging row-shaped channels (3) in the bottom of the square pit (1), and digging a converging channel (4) in a junction of the two sides of the row-shaped channels (3); enabling the row-shaped channels (3) to be filled with a replaceable inorganic absorbent material (5); laying an organic fiber material (6) adsorbed with aerobic microorganisms on the square pit (1), and compacting by treading; laying another layer of the organic fiber material (6), and compacting by treading; on the basis of the step 5, diluting a traditional Chinese medicinal disease-preventing agent and serum lactate into 600 times of water, fermenting for five days, pouring into the pit in the amount of 0.4 kilograms per square meter, and farming the pigs into the pit. By the special microbial farming method, manures and urine excreted by the pigs can be effectively decomposed by active microbes, so that the pigs can grow healthily and rapidly.
Owner:山西海元森生物科技有限公司

A wind speed control method for a bottom-flow air conditioner and a bottom-flow air conditioner

The present invention provides a wind speed control method for a bottom air conditioner and a bottom air conditioner, comprising the following steps: acquiring the near-earth temperature, and matching the near-earth temperature with a preset near-earth temperature interval; if the acquired near-earth temperature is within the preset In the temperature range, the coil temperature is obtained; the temperature difference between the coil temperature and the near-earth temperature is matched with multiple preset temperature difference ranges, and the lower outlet air is adjusted according to the fan speed corresponding to the preset temperature difference range where the temperature difference is located. Adjust the fan speed of the air conditioner. The wind speed control method of the down-flow air conditioner provided by the present invention determines the temperature at the bottom of the room through the near-ground temperature, obtains the coil temperature when the temperature at the bottom of the room is low, and comprehensively considers the down-flow air conditioner through the coil temperature and the near-ground temperature According to the operating status of the air conditioner and the temperature at the bottom of the room, adjust the wind speed of the lower outlet air conditioner according to the fan speed corresponding to the preset temperature difference range of the temperature difference, so as to solve the problem that the temperature at the bottom of the room is too low when the cabinet air conditioner is heating in winter.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2

A kind of control method of graphene under-ventilation air conditioner and graphene under-ventilation air conditioner

The invention relates to the technical field of air conditioners, and provides a control method for a graphene under-air air conditioner and a graphene under-air air conditioner. Ratio; control the corresponding number of graphene heating films for heating according to the ratio of the actual near-ground temperature difference to the coil temperature. In the control method of the graphene air-outlet air conditioner provided by the present invention, a heating layer for air heating and a radiant layer for heating at the bottom of the room are arranged in the graphene heating film, according to the set temperature of the room, the near-ground temperature and the disk tube temperature, obtain the ratio between the actual near-ground temperature difference and the coil temperature, and use the ratio to control the corresponding number of graphene heating films for heating, so that the graphene down-air air conditioner can change the air supply temperature at the bottom of the air conditioner according to the temperature change, and at the same time Using radiation heat transfer to quickly increase the bottom temperature, solve the problem that the bottom temperature of the room is too low when the cabinet air conditioner is heating in winter.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2
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