625 results about "Outdoor temperature" patented technology

The invention relates to the technical field of intelligent building energy management, and particularly discloses an air conditioner load cluster optimization regulation and control method and system based on building thermal inertia modeling, and the method comprises the steps: collecting building structure parameters, building material thermophysical parameters, indoor and outdoor temperature and humidity historical data, air conditioner operation data and real-time electricity price data of a building; building a building thermal inertia model based on the collected data; inputting the collected air conditioner operation data, indoor and outdoor temperature and humidity historical data into a building thermal inertia model, and predicting air conditioner loads under different working conditions; constructing an optimized objective function, and solving the optimized objective function by adopting a genetic algorithm to obtain an optimal air conditioner load regulation and control strategy; and according to the optimal air conditioner load regulation and control strategy, the air conditioner load cluster is regulated and controlled in real time. The energy utilization efficiency can be effectively improved, the operation cost is reduced, and intelligent and refined regulation and control of the air conditioner load cluster are achieved.

An implementation of the disclosed technology provides a method that includes receiving a setpoint temperature for the building, determining an average outdoor temperature over a first predetermined time period for a location of the building, measuring a total central heating energy consumption for the building over the first predetermined time period, adding the determined average outdoor temperature and measured total central heating energy consumption to a first data set including a plurality of average outdoor temperatures and corresponding total central heating energy consumptions over a plurality of predetermined time periods having durations substantially the same as the first predetermined time period, estimating a weather independent normalized heating energy consumption for maintaining the setpoint temperature in the building based on a predetermined reference outdoor temperature and the first data set, and characterizing the heating energy consumption for heating the building based on the normalized heating energy consumption and a base temperature wherein the base temperature is the outdoor temperature at which heating is required to keep an indoor temperature minimally at the setpoint temperature and wherein the base temperature is selectively obtained by way of optimization and / or linear fit and / or distribution based approach. (1)

The invention provides a heterogeneous building air conditioner group quick response control method based on physical information deep learning, and the method comprises the steps: 1, obtaining a real-time discrete step scheduling instruction issued by a power grid, obtaining the thermodynamic parameters and equipment inertia time constants of all building units in a heterogeneous building group, obtaining the outdoor temperature, and carrying out the real-time discrete step scheduling instruction; the solar radiation intensity and the indoor air temperature of each building unit; step 2, extracting spatial-temporal characteristics of each building unit based on a multi-head self-attention mechanism, and generating initial distribution target power of the air conditioner; 3, inputting the initial allocation target power into a pre-trained cascaded physical information neural network (PINN), and predicting power and temperature evolution tracks in a future scheduling period; 4, calculating an out-of-limit risk index of each unit, judging whether to execute a quantile risk migration strategy or not, and generating a final distribution target power of the air conditioner; and 5, calculating the transient climbing deviation between the actual aggregation power and the target power of the power grid, and carrying out deviation compensation.

The invention relates to the technical field of air conditioners, and provides a compressor frequency control method and device of an air conditioner and an air conditioning system.The control method comprises the steps that the current indoor temperature, the current compressor frequency and the current outdoor temperature are obtained; based on the current indoor temperature, the current compressor frequency and the current outdoor temperature, the next indoor temperature corresponding to the next operation stage is determined; the temperature difference value between the next indoor temperature and the preset target temperature is determined; and under the condition that the temperature difference value is larger than a preset threshold value, the operation frequency of the compressor is adjusted based on the temperature difference value and a preset temperature difference, so that the next compressor frequency is obtained. According to the method, the next indoor temperature of the next operation stage is predicted, the temperature change trend is predicted in advance, then the frequency of the compressor is dynamically adjusted by calculating the temperature difference value between the next indoor temperature and the preset target temperature, fluctuation of the indoor temperature is effectively reduced, and the comfort of a user is improved; and by optimizing the operation frequency of the compressor, the energy utilization efficiency is remarkably improved.

The invention discloses a solar photovoltaic power generation and energy storage integrated communication machine room and an energy management and multi-mode refrigeration control method thereof, and belongs to the field of solar photovoltaic power generation green low-carbon communication machine rooms. The communication machine room takes an optical storage all-in-one machine and a unified direct-current bus as a core, photovoltaic power is connected to the direct-current bus through DC / DC, stored energy is connected to the direct-current bus through bidirectional DC / DC, commercial power is connected to the direct-current bus through AC / DC, a bus voltage stabilizing module is configured, and photovoltaic power supply priority, residual power charging and gap energy complementation are achieved. The energy management method comprises the steps of collecting power and a charge state to generate a state quantity, distributing the power according to priorities and issuing a control instruction. According to the refrigeration control method, the refrigeration mode or the mixed mode of the heat pipe and the compressor is switched according to the outdoor temperature threshold value and the refrigeration requirement, the three-way valve, the compressor and the fan are cooperatively controlled, and hysteretic and minimum retention time constraints are adopted to restrain frequent switching. According to the scheme, the renewable energy proportion and power supply continuity are improved, refrigeration energy consumption is reduced, and temperature control of the machine room is kept stable.

The invention relates to the technical field of refrigeration air conditioners and automatic control, in particular to a fixed frequency compressor group control energy regulation system based on outdoor temperature and humidity coupling, which comprises a data acquisition unit, a reheating demand judgment unit and an anti-icing protection control unit, a data acquisition unit acquires outdoor temperature and humidity coupling data and return air temperature data of all compressors through an outdoor temperature and humidity sensor and a return air temperature sensor, and a reheating demand judgment unit implements temperature feedforward control based on outdoor temperature and humidity and sets an adjustable limit level to constrain the input proportion of the compressors. When the compressors are fully input and the humidity exceeds the standard, the moisture content of indoor, target and outdoor air is calculated, the reheating requirement is judged by combining the transient temperature when the integral speed of the cooling and dehumidification PID controller and the adjustable limiting level and the floating gear are adjusted according to the moisture content, and the anti-icing protection control unit periodically monitors the return air temperature and takes measures. The problems that temperature and humidity control of a traditional system is not coordinated, and anti-icing protection is not accurate are solved.

The invention discloses an air conditioner filter screen cleaning prompting method based on artificial intelligence, and relates to the technical field of intelligent maintenance of air conditioners and heating ventilation air conditioning equipment. Systematic interference of high humidity and accumulated water of a pressure taking channel on pressure difference reading is eliminated on the sensing level by introducing a dew point driven condensation risk grading and feature weight descending mechanism; the pressure difference indication is closer to the real resistance evolution; then, differential pressure, fan electric parameters and indoor and outdoor temperature and humidity are comprehensively utilized through multi-time-window preprocessing and a time sequence classification model, distinguishing of a dry dust blocking mode and a wet mold blocking mode is achieved, and the complex process of slow accumulation-intermittent fluctuation-seasonal migration in a coastal scene can be covered; and a hysteresis and anti-shake strategy is adopted in a decision-making level, and a minimum prompt interval is set, so that false alarm and frequent reminding caused by transient disturbance are inhibited, and the user experience is remarkably improved.

The invention relates to the technical field of building carbon emission measurement and calculation, and provides a building envelope structure carbon emission dynamic measurement and calculation method which comprises the following steps: step 1, area delimitation: dividing building areas, and combining the same kind of building areas; step 2, individual enclosure structure collection: the unmanned aerial vehicle is used for aerial photography to collect all-angle camera pictures of the individual building enclosure structure in the building area; by considering different time variation and space planning of the building, the heat transfer process of the building envelope and the indoor temperature change are dynamically simulated, the carbon emission measurement and calculation result is updated in real time, and the dynamic change of the carbon emission of the building is reflected in time; the heat transfer and heating capacity of the building envelope structure can be accurately measured and calculated under the influence of solar radiation intensity and outdoor temperature change in different time periods of a building in one day and different orientations, different floors and surrounding environments of the building on heat transfer.

The invention provides a fresh air dehumidification energy-saving control method and system, and relates to the technical field of fresh air dehumidification energy-saving control, the outdoor temperature, the outdoor relative humidity and the actual personnel number of an independent control area are obtained in real time and compared with the preset personnel number, and the number deviation is determined; when the quantity deviation meets a preset deviation threshold value and the outdoor temperature and humidity meet preset conditions, the target fresh air volume can be calculated according to the actual personnel quantity, the total fresh air volume is divided into first fresh air and second fresh air, the first fresh air is guided to a chilled water coil pipe for cooling and dehumidification, and the second fresh air is guided to a chilled water coil pipe for cooling and dehumidification; the first fresh air bypasses the chilled water coil pipe through the bypass air duct and is not cooled and dehumidified, the second fresh air bypasses the chilled water coil pipe through the bypass air duct and is not cooled and dehumidified, and then the cooled and dehumidified first fresh air and the second fresh air are mixed and conveyed to the variable air volume valve box for air volume adjustment. And a remarkable energy-saving effect and better user experience are achieved.

This invention discloses a safe heat dissipation transformer, including a mounting frame. A transformer body is fixedly mounted on the top of the mounting frame, and circulating hollow columns are fixedly connected to both sides of the transformer body. A follower is rotatably connected inside the circulating hollow columns. This invention draws water from the tank and inputs it at low pressure into the loop pipe by activating a sprinkler assembly, causing the water to flow downwards along the outside of the circulating hollow columns. This not only washes the outer surface of the circulating hollow columns, improving heat dissipation, but also allows for water recycling. As the water flows downwards naturally, some of it evaporates due to heat, while the rest is filtered by the filter and returns to the tank for reuse, maximizing water utilization. This achieves combined heat dissipation and energy saving, while also allowing for adjustable heat dissipation to suit different outdoor temperatures, resulting in better heat dissipation and high flexibility.

The invention provides a refined calculation method for thermal equilibrium of a secondary pipe network. The refined calculation method comprises the following steps: S1, establishing an indoor comprehensive temperature calculation model of a building; s2, an outdoor comprehensive temperature calculation model is established, and time-average calculation optimization is carried out; s3, optimizing an indoor comprehensive temperature calculation model of the building, and eliminating system delay; s4, the theoretical building indoor comprehensive temperature is calculated, whether the building indoor set target temperature is met or not is judged, and pipe network thermodynamic equilibrium adjustment is conducted; and S5, evaluating the thermal equilibrium effect of the pipe network. Data resources of secondary pipe network supply and return water temperature, heating buildings and outdoor meteorological temperature are fully utilized, an indoor and outdoor temperature dynamic calculation model is established through heat balance theory analysis, thermal delay is considered synchronously, a system cooperative adjustment strategy is achieved, and system stability is improved.

The invention discloses an intelligent air conditioner energy-saving control system and method based on AI optimization, relates to the technical field of energy-saving control, solves the technical problems that state judgment and fault early warning are lagged and an energy-saving strategy lacks pertinence, avoids limitation of a single threshold value by constructing a normal working interval of a sub-scene, and improves the energy-saving control efficiency. The potential anomaly analysis unit reduces the misjudgment rate through trend curve modeling and multi-dimensional mutation environment judgment and correlation parameter verification, accurately distinguishes environment fluctuation and equipment anomaly, achieves accurate tracing of fault causes through construction of an anomaly cause knowledge base and combination of deep learning feature extraction and strong correlation parameter analysis, does not need manual troubleshooting one by one, and improves the detection efficiency. According to the method, the fault response time is shortened, the service life of equipment is prolonged, a scenarized energy-saving strategy is generated through an AI algorithm based on the three-dimensional combination characteristics of indoor and outdoor temperature difference, personnel density and parameter change rate, dynamic linkage of load adaptation-parameter optimization is achieved, system energy consumption is reduced, and indoor comfort can be guaranteed.

The invention discloses an air conditioner regulation and control method and device based on user comfort and carbon emission optimization. The method comprises the steps that building parameters, indoor temperature, outdoor temperature and air conditioner equipment operation parameters of an area where an air conditioner system is located are collected; taking the minimum carbon emission as a first objective function, and establishing an upper-layer optimization model considering the respiratory heat influence; taking maximized user comfort as a second objective function, and establishing a lower-layer optimization model considering carbon dioxide concentration, different user activities and different types of user thermal comfort preference influences; and on the basis of the collected data, the upper-layer model and the lower-layer model are combined for solving, and an optimal control scheme of the starting power time sequence of the air conditioning system is output. According to the method, an efficient and feasible regulation and control strategy is provided for the intelligent air conditioning system, the low-carbon dispatching capacity of operation of the building energy consumption system is improved, and collaborative optimization of energy consumption control and user comfort is achieved.

The invention discloses an air energy heat pump unit control method and device, a storage medium and a server, and relates to the technical field of heat pump units. The method comprises the steps that the future outdoor temperature corresponding to an air energy heat pump unit is determined; a preset building model is adopted for calculation according to the future outdoor temperature, and the required heating capacity is obtained; when the future outdoor temperature is larger than a preset outdoor temperature, an adjustment coefficient is calculated according to the required heating capacity and a reference heating capacity, and the reference heating capacity is obtained through calculation according to the preset outdoor temperature by adopting the preset building model; and the actual set water temperature is corrected according to the adjustment coefficient and the preset temperature difference, the corrected set water temperature is obtained, and the air energy heat pump unit is controlled to conduct heating operation according to the corrected set water temperature. The water temperature can be reliably and dynamically adjusted and set, the operation energy consumption of the air energy heat pump unit is reduced, and the heat supply effect of the air energy heat pump unit is guaranteed.

The invention discloses a method for acquiring optimal measurement conditions of building room temperature monitoring. According to the method, a discrete coordinate radiation model is set, a sun tracking function is started at the same time, and wall mixed thermal boundary conditions are considered. Factors influencing the accuracy and stability of room temperature monitoring, such as temperature measurement distance, time, sunshade condition, temperature measurement position, weather condition, window opening and closing, outdoor temperature and room characteristic factors, are explored, so that the influence rule of different factors on the room temperature monitoring of the building is provided. According to the method, accurate modeling is performed according to thermodynamic behaviors in a complex building environment, and complex factors, including thermal conductivity of building materials, indoor air flow and heat source distribution, suffered by the room temperature of a building are considered; under different environmental conditions, dynamic characteristics of a building room temperature change rule are considered, a monitoring scheme is dynamically adjusted based on real-time simulation data to obtain an optimal measurement condition, and the complexity of the system is reduced in a real-time feedback process.

The present application relates to the field of tobacco leaf airing, and discloses a warehouse type tobacco leaf airing house, which comprises a humidifier and a dehumidifier arranged in an airing room and used for adjusting the humidity in the airing room; a controller connected with the humidifier and the dehumidifier and used for controlling the operation of the humidifier and the dehumidifier according to received temperature and humidity information; a temperature and humidity detection assembly comprising an outdoor detection unit used for detecting outdoor temperature and humidity and an indoor detection unit used for detecting indoor temperature and humidity; a control assembly used for receiving signals of the temperature and humidity detection assembly and sending control instructions to the controller; and a tobacco airing rack arranged in the airing room, wherein the airing rack is arranged in multiple layers, each layer of the airing rack is provided with a plurality of groups of tobacco airing rods, and the airing room realizes accurate control of temperature and humidity in the airing process through the cooperation of the temperature and humidity detection assembly and the control assembly; and the airing rack is provided with an auxiliary mechanism used for assisting the collection of tobacco leaves on the airing rods.

The application provides a data center cooling tower automatic deicing device, and relates to the technical field of cooling towers. The device comprises: an air heat exchange system connected with a data center machine room and a data center cooling tower, used for guiding the heat of the data center machine room to the data center cooling tower for ice prevention and deicing, and guiding the cold obtained by the data center cooling tower for ice prevention and deicing to the data center machine room for cooling; and a detection control system comprising: a temperature sensor, at least comprising a first temperature sensor, installed outside the air inlet side of the data center cooling tower, used for monitoring the outdoor temperature of the air inlet side of the data center cooling tower, a data center dynamic ring system connected with the first temperature sensor and the air heat exchange system, used for starting the air heat exchange system according to the outdoor temperature of the air inlet side of the data center cooling tower, so as to realize the ice prevention and deicing of the data center cooling tower and the cooling of the data center machine room. The application can balance the deicing efficiency and energy consumption control.

The invention provides a recursive least square method-based building thermal load and room temperature online prediction method and system. The method comprises the steps of establishing a second-order thermal resistance and thermal capacity RC network model comprising a room air heat balance equation and a virtual enclosure structure heat balance equation; performing discretization processing on the second-order RC network model; a polynomial Kalman smoothing device is adopted to process indoor and outdoor temperature data containing noise; solving the temperature and thermal resistance and thermal capacity parameters of the virtual enclosure structure in real time; and according to the identified thermal parameters, the historical temperature data and the weather forecast data, the indoor temperature and the building thermal load at the next moment are predicted in real time. According to the method, the non-measurable temperature nodes of the virtual enclosure structure are incorporated into the to-be-identified parameters, the second-order RC model is constructed, and the thermal dynamic process of the building is reflected more truly; the accuracy of thermal load and room temperature prediction is directly guaranteed through model precision improvement, a reliable basis is provided for HVAC system optimization control, energy waste is avoided, and the thermal comfort of a user is improved.

The present application relates to the technical field of heat supply balance management, in particular to a heat supply balance management method and system for end user heat supply. The method comprises the following steps: S1, a heat supply global data acquisition model is built, heat supply pipeline data is collected, and an end user list is obtained according to the heat supply pipeline data; outdoor temperature and historical heat supply temperature of each end user are synchronously obtained; independent temperature periods are divided according to the outdoor temperature value; the same heat supply scheme is adopted for classification and elimination of regulation and control interference; temperature differences of different users are compared under the same heat supply condition; exclusive heat loss coefficients of each household are quantitatively generated; heat loss differences caused by floors, orientations and wall heat preservation can be accurately distinguished; user target heat supply temperature is dynamically corrected according to the heat loss coefficient; the temperature correction range of users with large heat loss is increased, and the correction range of users with excellent heat preservation performance is reduced; the uneven heating and cooling problem caused by inconsistent heat dissipation of different houses is solved from the heat loss level of the user itself.

The present application provides an ambient temperature self-adaptive control method, device, medium, electronic equipment and heat pump, relates to the technical field of heat pump, and solves the technical problems that customers frequently adjust the set temperature of the unit and the operation is complicated. The method comprises the following steps: S1, presetting user habit parameters; S2, acquiring current outdoor temperature parameters; S3, obtaining starting operation parameters of an air source heat pump unit based on the acquired current outdoor temperature parameters and the preset user habit parameters; S4, acquiring the outdoor temperature parameters again after a set interval time At; S5, obtaining updated operation parameters of the air source heat pump unit based on the outdoor temperature parameters acquired again and the current outdoor temperature parameters acquired in the step S2; S6, comparing the updated operation parameters with actual operation parameters; and S7, executing different temperature adjustment methods based on the comparison result. The present application adjusts the indoor temperature of each room according to the outdoor temperature change of each room, and relieves the situation that the user frequently sets the indoor temperature.

An air conditioning system 1 according to one embodiment comprises an outdoor unit 2, several indoor units 4, 4a, 4b and 4c, several switching units 6, 6a, 6b, 6c and a control unit 8. The switching units 6, 6a, 6b, 6c switch the refrigerant flow to one of two flow paths between the outdoor unit 2 and the several indoor units 4, 4a, 4b and 4c, one of the two flow paths being used for cooling and the other for heating. When an outdoor heat exchanger 203 acts as an evaporator and some of the several indoor units 4, 4a, 4b and 4c are in cooling mode and some are in heating mode, the control unit 8 adjusts the opening degree of an internal expansion valve 404, 404a, 404b, 404c of an indoor unit 4, 4a, 4b and 4c during cooling mode, this adjustment being made according to the outdoor temperature and the indoor temperature detected by an indoor temperature sensing unit 405, 405a, 405b, 405c of an indoor unit 4, 4a, 4b and 4c during heating mode.

The application belongs to new energy and energy-saving technology, and specifically discloses a temporary building air-conditioning heating operation optimization method, device, equipment and medium; the temporary building thermodynamic model is built based on the building structure of the temporary building and the heat transfer principle, and the heat dissipation of the temporary building can be simply calculated through the model. By introducing the environmental factor, the heating model of the air conditioner is further optimized, and the heating effect of the air conditioner is more accurately calculated. Finally, taking the power consumption of the temporary building as the optimization target, a temporary building air-conditioning operation optimization model is constructed, the model is solved, and the curve of the number of air conditioners started in the temporary building changing with temperature is obtained. According to the outdoor temperature and the curve, the start-stop state of the indoor air conditioner is adjusted, so that the energy saving and environmental protection are realized while the heat load demand is met.

The utility model discloses an outdoor photovoltaic grid-connected cabinet, which comprises an outdoor box and a plurality of grid-connected cabinet bodies, the outdoor box is sleeved outside the grid-connected cabinet bodies, the upper end of the outdoor box is provided with a top cover, the top end of the inside of the top cover is provided with a fixed support and a top beam, the surface of the top beam is provided with an axial flow fan, the front end of each grid-connected cabinet body is provided with an instrument door, and the instrument doors are connected with the instrument doors. A temperature controller is installed on the instrument door, a sensor of the temperature controller is installed on the top of the grid-connected cabinet body, and the temperature controller is used for receiving temperature information of the sensor of the temperature controller and controlling the axial flow fan to work. According to the utility model, the defect that the existing grid-connected cabinet is easily influenced by outdoor temperature, so that the temperature of equipment is too high and the safety operation of the equipment is not facilitated is overcome.

The invention relates to the technical field of heat pump water temperature control, discloses a heat pump outlet water temperature adjusting method, device and equipment and a storage medium, and is used for solving the problem of energy consumption waste existing in an existing heat pump outlet water temperature adjusting scheme. The operation mode and the tail end energy requirement of the heat pump system are determined; if the operation mode is the refrigeration mode, it is determined that the tail end energy needs to be an air cabinet water pump load, and the initial refrigeration water outlet target temperature is determined based on the previous operation mode of the refrigeration mode; the actual refrigeration water outlet target temperature is calculated based on the initial refrigeration water outlet target temperature through the first dynamic adjustment logic; if the operation mode is a heating mode, it is determined that the tail end needs to be an air cabinet water pump load or floor heating, and the initial heating water outlet target temperature is determined according to the outdoor temperature; calculating an actual heating water outlet target temperature based on the initial heating water outlet target temperature by using a second dynamic adjustment logic; and the heat pump system is controlled to operate based on the actual refrigeration water outlet target temperature or the actual heating water outlet target temperature.

A heat pump system according to an aspect of the disclosed invention may include: a compressor for compressing a refrigerant; a refrigerant-water heat exchanger performing heat exchange between the compressed refrigerant and the introduced water; an expansion valve for expanding the refrigerant condensed in the refrigerant-water heat exchanger; an outdoor heat exchanger performing heat exchange between the refrigerant expanded by the expansion valve and outdoor air; a high-pressure sensor for sensing a high-pressure saturation temperature of the refrigerant compressed in the compressor; the water inlet temperature sensor is used for sensing the temperature of water entering the refrigerant-water heat exchanger; the condensation temperature sensor is used for sensing the temperature of the refrigerant condensed in the refrigerant-water heat exchanger; the outdoor temperature sensor is used for sensing the outdoor temperature; the control component determines the reference supercooling degree of the refrigerant based on the sensing results of the outdoor temperature sensor and the water inlet temperature sensor and the operation frequency of the compressor, determines the current supercooling degree of the refrigerant based on the sensing results of the high pressure sensor and the condensation temperature sensor, and compares the reference supercooling degree with the current supercooling degree. To determine whether there is a refrigerant leak.

The invention relates to an intelligent door and window adjusting method and device based on environmental data, and belongs to the technical field of smart home, and the method comprises the following steps: 1, a sensing module is used for obtaining temperature data, humidity data, noise data and carbon dioxide concentration and uploading the data to a control module; 2, the control module calculates a comprehensive comfort index by using weighted average according to the temperature data, the indoor and outdoor temperature difference data, the humidity data, the indoor and outdoor humidity difference data, the outdoor noise data and the carbon dioxide concentration; 3, the control module judges whether the comprehensive comfort index exceeds a threshold value or not, instructs the driving module to increase the opening and closing angle when the comprehensive comfort index exceeds the threshold value, and instructs the driving module to reduce the opening and closing angle when the comprehensive comfort index is lower than the threshold value; multi-environment parameter coupling adjustment can be carried out, and the adjustment fineness is high.

This invention discloses a method and apparatus for regulating exhaust fluctuations in an air conditioner, as well as the air conditioner itself. The method includes: after each start-up of the air conditioner, if exhaust fluctuations are detected, acquiring exhaust fluctuation information within a first predetermined time period; when it is determined that the exhaust fluctuation regulation function needs to be activated, determining the indoor-outdoor temperature difference between the current indoor and outdoor ambient temperatures, and simultaneously determining the exhaust temperature difference between the current actual exhaust temperature and the target exhaust temperature; determining the target action that the air conditioner needs to perform under the exhaust fluctuation regulation function based on the exhaust temperature difference, and determining the action parameters for the target action based on the indoor-outdoor temperature difference and the exhaust temperature difference; and controlling the air conditioner to perform the target action according to the action parameters. This invention solves the technical problem in related technologies where the exhaust temperature of air conditioners fluctuates, easily causing fluctuations in the cooling or heating capacity of the air conditioner, thus leading to unstable operation of the air conditioner.

To provide a ventilation system capable of discharging a refrigerant to an outdoor side for a short time by promptly performing initial action of discharging the refrigerant leaked from an air conditioner to an indoor side.SOLUTION: A heat exchange type ventilation device 3 exchanges heat between exhaust air flowing from an indoor side to an outdoor side and supply air flowing from the outdoor side to the indoor side by using a heat exchange element 38. An air supply air course 4 communicates the outdoor side and the indoor side via the heat exchange element 38. A heat exchange air exhaust air course 5 communicates the indoor side and the outdoor side via the heat exchange element 38. A bypass air exhaust air course 6 communicates the indoor side and the outdoor side without interposing the heat exchange element 38. An air exhaust air course switching section 41 switches the heat exchange air exhaust air course 5 and the bypass air exhaust air course on the basis of an indoor temperature and an outdoor temperature. A control section stops control of switching by the air exhaust air course switching section 41 when determining that a concentration of a refrigerant indicating leakage of the refrigerant from an air conditioner detected by a refrigerant sensor is a predetermined concentration threshold value or larger.SELECTED DRAWING: Figure 2

The invention relates to the technical field of data center heat dissipation, and provides a waste heat recycling system and method for a liquid cooling source, and the system comprises a liquid cooling cabinet, a cooling capacity distribution unit, a water fluorine heat exchanger, a water tank, a compressor, an evaporative condenser, a first temperature sensor and a second temperature sensor. Wherein the water-fluorine heat exchanger is in fluid connection with the cooling capacity distribution unit through a first switch assembly, the compressor and the evaporative condenser are in fluid connection with the cooling capacity distribution unit through a second switch assembly, and the first switch assembly and the water-fluorine heat exchanger are started or stopped based on the water temperature in the water tank; the second switch assembly, the compressor and / or the evaporative condenser are started or stopped based on the water temperature in the water tank and the outdoor temperature. Through the configuration, the system fully cooperates with the state of the surrounding environment and the state of the waste heat recycling object to reduce the operation time of the compressor and the evaporative condenser as much as possible, and the PUE of the whole data center is improved.

The invention provides a multi-energy complementary heat supply system and method based on an air source heat pump, a ground source heat pump and a heat storage water tank, belongs to the technical field of heating, ventilation and air conditioning, and solves the problem that the operation scheme design in a specific scene still has a blank. The system comprises a ground source heat pump, a buried pipe, a heat storage water tank, an air source heat pump, a fan, an air-water heat exchanger, a plate heat exchanger and a heat consumer and has seven operation modes, and different system operation modes are adopted for different outdoor temperature intervals. By establishing a correlation model of an environment temperature, a system connection form and equipment start-stop, the energy supply efficiency is improved, the operation cost is reduced, and carbon emission is reduced.