469 results about "Air conditioning load" patented technology

The invention provides a method for controlling a global optimization of energy saving for a central air conditioning system based on a model, comprising a control module, a multichannel data acquisition card and control card, a refrigerating unit data collector and a controller, a humidity sensor, a temperature sensor, a flow sensor, a watt transducer, a water pump frequency converter, a fan frequency converter, an RS232/RS485 conversion module and a RS485/RS232 conversion module. The whole system can be operated under the condition of most energy saving according to an operating condition of optimized energy saving of each energy consumption device acquired by calculation of a calculation module by taking energy consumption modules of a refrigerating unit, a water pump and a fan and an ARMA air conditioning load forecasting model. The invention thoroughly concerns an influence of the operating condition of each power device in the system to the energy consumption of the whole system, takes a control strategy based on a forecasted air conditioning load, and performs an online update for the energy consumption modules of key energy consumption devices in the system, thereby greatly improving an effect of optimization of energy saving for the central air conditioning system.

The invention discloses a method for online prediction on cooling load of a central air conditioner in marketplace buildings. The method comprises the following steps of: continuously acquiring various parameters; when the quantity of acquired data meets the needs, respectively building prediction models of the air conditioner cooling load and all input parameter values in three types including working day, weekend and festival and holiday by using an Online SVR (Support Vector Regression) method; then, predicting the input parameter value of 24 hours of that very day according to the historical data of outdoor meteorological parameter and air conditioner operation input parameter; finally, predicting the air conditioner cooling load within 24 hours of that very day by using the air conditioner load prediction model of corresponding date type and taking the predicted value of each input parameter within 24 hours of that very day as the input, and compensating by a residual error sequence of the actual value and the predicted value of the air conditioner cooling load in the previous day of the corresponding date type; and simultaneously, dynamically correcting the prediction model of the air conditioner cooling load with online addition of new samples. The method provided by the invention effectively realizes the dynamic and accurate prediction on the air conditioner cooling load.

The invention discloses an aggregation air conditioning load scheduling method based on temperature set value adjustment. The method comprises the following steps: (1) acquiring the temperature set value and outdoor temperature prediction value of each air conditioner aggregation group through a bilateral information channel; (2) adjusting and estimating the load increase/decrease scheme of each air conditioner aggregation group based on the temperature set values; (3) acquiring a load increase/decrease target issued by a superior scheduling department; (4) establishing an aggregation air conditioner scheduling decision model, and solving; (5) issuing an air conditioner control command through the bilateral information channel. By adopting the aggregation air conditioning load scheduling method, load increase/decrease service can be provided for electric power system scheduling on the premise of not influencing the user comfort by using air conditioning equipment of a user, so that the user turns from an electric energy user to a participant of an electric power system and participates in running of the electric power system; meanwhile, by using the method, technical guidance can be provided for the innovation of the scheduling mode of a power grid scheduling department.

The invention discloses a central air-conditioning modeling and controlling strategy on the basis of demand response, which comprises the following steps of building a room model, namely the relation between the indoor temperature and outdoor temperature of the room and sensible heat cooling load; building a center air-conditioning model suitable for the system operation of the demand response, namely the relation between air conditioning load and a decision variable; determining a controlling strategy, namely making an objective function, a control variable, a constraint condition and the like clear; solving the objective function by adopting a harmony search algorithm combining with a state space truncation method; obtaining a result, and performing analysis and treatment on the result. According to the central air-conditioning modeling and controlling strategy on the basis of the demand response, through meticulously building the models, making the strategy of multiple control variables cooperative optimization clear, scientific theoretical support is provided for the central air-conditioning to participate in the system operation of the demand response.

An eco driving system for an electric vehicle and a method thereof is disclosed. The eco driving system may include: a route generator that generates at least one candidate route from a current position to a destination; an information collector that collects real time traffic information, weather information, and an air conditioning load of the vehicle; an energy consumption amount calculator that calculates energy consumption amount of each candidate route based on 3D geographical information of the candidate route and the real time traffic information, the weather information, and the air conditioning load of the vehicle; a driver tendency detector that analyzes a driver's driving pattern to determine the driving tendency; a data base portion that stores each program and data for guiding the eco driving; and a control portion that selects an echo driving route from the candidate routes corresponding to the driving tendency.

Apparatus and method for controlling compressors of a multi-chamber type air conditioner. The apparatus includes an operating time-accumulating unit for accumulating operating times of the plural compressors; a storage unit for storing the cumulative operating times obtained by the operating time-accumulating unit; indoor control units for respectively controlling the indoor units; and an outdoor control unit for selecting compressors to be operated based on the cumulative operating times of the compressors and controlling the operations of the selected compressors, when it is necessary to operate at least one compressor based on air conditioning loads required by the indoor control units. The apparatus provides uniform chances of operation to all the compressors, thereby providing convenience in replacing the compressors with new ones and checking the life spans of the compressors.

The invention involves an air distributing apparatus for installation in a diffuser. The apparatus includes a first damper positioned within the diffuser. The first damper also has an open mode where a stream of air can exit the diffuser to a space. The first damper has a closed mode where the damper inhibits the stream of air from exiting the diffuser. The apparatus includes an actuator operatively connected to the first damper. There is an occupancy sensor positioned and configured to distinguish whether the space is occupied or unoccupied by a person. The occupancy sensor is in communication with the actuator. When the space is occupied by the person, the occupancy sensor communicates with the actuator to thereby cause the first damper to be positioned in the open mode. When the space is unoccupied, the occupancy sensor communicates with the actuator to thereby cause the first damper to be positioned in the closed mode. A remote temperature sensor varies the volume of supply air entering the space depending on the prevailing air conditioning load.

The invention discloses a controlling method and device for an air conditioner chilled water system, wherein the controlling method comprises the following steps of acquiring a current air-conditioning load value of an air conditioner; determining a corrected value for adjusting an operating parameter of the air conditioner chilled water system according to the air-conditioning load value; and adjusting a parameter value of the operating parameter of the air conditioner chilled water system based on the corrected value. According to the controlling method and device for the air conditioner chilled water system, the technical problem that a value of the operating parameter of the air conditioner chilled water system cannot be controlled in advance due to the fact that the prior art adopts an average value of the operating parameters of the past N circulating periods of the chiller water system as the corrected value of the operating parameter of the next circulating period is solved.

The invention relates to a method for performing power optimized scheduling on controllable loads comprising air conditioning loads. The controllable loads comprise the air conditioner loads with adjustable power as well as transferrable loads; an air conditioner operation optimization target model is established for the air conditioner loads, and a transferrable load optimization target model is established for the transferrable loads; the air conditioner operation optimization target model is optimized with a non-dominated sorting genetic algorithm; the transferrable load optimization target model is optimized with a self-adaptive genetic algorithm. On the premise that power utilization habits and power utilization comfort of a user are considered, electric equipment is classified as electric equipment with controllable loads and electric equipment with fixed loads, the air conditioner loads and the transferrable loads in the controllable loads are modeled, the power utilization modes are optimized with the corresponding intelligent algorithms respectively, and the controllable loads are effectively optimized and managed on the premise that the power utilization comfort of the user is realized.

A vehicular refrigeration cycle apparatus where, at the time of startup before starting the operation of a compressor, the speed of a condenser-use blower which blows outside air toward the condenser is increased in accordance with the air-conditioning load. Due to this, the operating noise of the condenser-use blower familiar to the users becomes masking noise helping to prevent the operating noise of the compressor from being heard by the user and the unfamiliar operating noise of the compressor can be kept from being heard by the user.

The invention relates to a cold (warm) water circulation energy efficiency control method for a central air-conditioning system, which is characterized in that a water outlet end of an air conditioning unit of a circulation loop is respectively provided with temperature and pressure detections; a water outlet end of an air conditioning load is respectively provided temperature and pressure detections; temperature and pressure detections are respectively arranged between water inlets of a water pump and the air conditioning unit; a cold (warm) water shunt bypass valve is an electrical control valve; and a variable volume pump and the electrical control valve are respectively controlled by detecting the air conditioning unit and the air conditioning load. The water pump and/or the bypass shunt valve are adjusted by respectively detecting the temperature and the pressure at both ends of the air conditioning unit and the air conditioning load so as to meet the requirements of the air conditioning unit, the air conditioning load and the air conditioning effect for the flow rate to achieve the effect that under the best using effect, the system works in the best energy efficiency state,has adaptive ability and can save electric energy over 50 percent.

The invention belongs to the field of building energy consumption auditing. A public building energy consumption auditing statistics splitting method can conduct efficient energy consumption statistics on buildings different in area, size and usage situation, is wide in application range and performs flexible and changeable splitting statistics calculation according to specific situation. The monthly electricity bill of a building is divided into air conditioner energy consumption, internal load energy consumption and other energy consumption. The public building energy consumption auditing statistics splitting method comprises the steps that 1 monthly illumination energy consumption and device energy consumption are calculated; 2, surrounding structure load, fresh air load and internal personnel load are calculated; 3, air conditioner load CL of the building is calculated; 4, a rated SCOPe of a system is calculated according to an actual investigating and surveying value; 5, a formula of the SCOP is calculated, wherein a system alpha is unknown; 6, the theoretical EHVAC' of the air conditioner system is calculated; 7, the actual EHVAC of the air conditioner system is calculated, wherein Eother is unknown. The method is mainly applied to an energy consumption auditing occasion.

The present invention discloses a photovoltaic and air condition load coordination optimization power distribution network voltage control method. The method comprises: a power distribution network obtains sensitivity information of each node through load flow calculation; each photovoltaic and air condition load user reports a price-regulation model according to the benefit itself; when the power distribution network has the voltage problems such as voltage off-limit or voltage too-low, a voltage integrated controller takes regulation cost as a target according to the model of each node user and the sensitivity of the nodes to establish a target function to determine the compensation price for each user; and each user regulates active or reactive power itself according to the obtained compensation price so as to realize voltage control. The photovoltaic and air condition load coordination optimization power distribution network voltage control method fully utilizes the regulation capacity of the air condition load, coordinates with the reactive regulation of a photovoltaic inverter, considers the power grid, air condition users and photovoltaic benefit, reduce discarding, improve the renewable energy utilization rate and provides reference for solving the voltage problem of a distributed photovoltaic access power distribution network.

The invention relates to an economical operating method of a central air-conditioning system, comprising the following steps: cold accumulation operation, i.e. a control system controls the closing of a valve at the inlet end of a fan coil, valves at two ends of a cold accumulation groove are open, refrigerating water comes out of the evaporator of a refrigerating main machine and enters the cold accumulation groove through a valve, the refrigerating water and cold accumulation medium in the groove undergo heat exchange, and the refrigerating water subject to the heat exchange is jointed at the collector pipe of the cold accumulation groove and is conveyed to the evaporator of the refrigerating main machine by a refrigerating water pump for purpose of temperature reduction, thus the cold accumulation circulation is completed; and cold supply operation, i.e. a monitor of a control system is used for monitoring the environment temperature and the air-conditioning load change and calculates which working condition of the compressor of the refrigerating main machine leads to the highest energy efficiency, a frequency converter is used for changing the rotation speed of the centrifugal compressor so that the compressor can work in the optimum working condition, the cold accumulation groove provides cold load for the sake of sufficient cold load, and surplus cold is stored in the cold accumulation groove. The invention causes the refrigerating main machine of the central air-conditioning system to keep operating with the highest efficiency, without being influenced by the change of the outside air temperature or the air-conditioning load, and the invention causes the refrigerating main machine of the central air-conditioning system to save energy to the maximum extent.

An air conditioning system having a terminal chest to provide an optimal airflow mainly includes a first adjustable baffle in a return air inlet of each terminal chest that is openable to a desired degree to regulate second time return air volume and a corresponding first time air intake volume according to alterations of air conditioning energy requirement of individual air conditioning area. A variable speed air fan motor is provided that can automatically adjust the rotation speed to deliver optimal airflow volume to automatically balance the air conditioning energy supply with the air conditioning load, thereby to save energy and prevent cool air effect, and maintain a desired air quality.

In an air-conditioning system controller provided with a central control unit and a local control unit, the central control unit includes a heat source machine measurement system for measuring an input/output state of a heat source machine, a setting unit for setting air-conditioning condition data on air-conditioning object spaces, an outdoor air measurement system for measuring outdoor air condition data, a total air-conditioning load operating unit, an optimal operating state estimation unit, and a heat source machine control. The total air-conditioning load operating unit calculates a total air-conditioning load or a heat exchange rate of the heat source machine based on chilled water inlet and outlet temperatures and chilled water flow rate of the heat source machine.

An air-source central air-conditioning hot water triple-generation heat pump unit comprises a compressor, a solar hot water pump, a hot water return pump, a hot water tank, a hot water solenoid valve, an air-conditioning solenoid valve, a four-way valve, a check valve group I, a case, a fan, a check valve group II, an air-source heat exchanger, an air-conditioning heat exchanger, a filter, an air-conditioning water pump, an energy storage tank, a thermal expansion valve I, a balance throttle pipe, a balance solenoid valve, a thermal expansion valve II, a liquid storage tank, an economizer, a liquid-vapor separator and a connecting line. By action of the balance throttle pipe, the check valve groups, the hot water tank and the air-source heat exchanger, the defect that traditional ground source heat pump units are not suitable for being promoted in regions with high building densities and projects with large air conditioning loads is overcome, the source efficiency ratio is improved effectively, health hot water at the temperature of 65DEG C is supplied, the problem of insufficient heat temperatures of hot water caused by inadequate refrigeration in transition seasons is solved, the hot water is output directly through tap water pressure, the dual hot water function of air source and solar energy is achieved, and heating is achieved without electricity at the temperature of minus 20DEG C in winter.

The invention provides a control system and method based on air conditioning load prediction. The control system comprises a datum collector, an air conditioning load predictor, a current air conditioning load computing unit and an air conditioning load predicting unit. The datum collector is used for collecting indoors temperature and humidity information and outdoors temperature and humidity information of the site where an air conditioner is located according to preset time intervals, and transmitting the information to the air conditioning load predictor. The air conditioning load predictor comprises a prediction step-size regulating device which is used for regulating a prediction step-size according to the indoors temperature and humidity information of the site where the air conditioner is located, preset standard values of indoor temperature and humidity and the outdoors temperature and humidity information, wherein the initial value of the prediction step-size is preset. The current air conditioning load computing unit is used for obtaining a current air conditioning load datum according to the difference value between the indoors temperature and humidity information of the site where the air conditioner is located and the preset standard values of indoor temperature and humidity. The air conditioning load predicting unit is used for predicting an air conditioning load value according to the current air conditioning load datum and the prediction step-size. The control system and method based on the air conditioning prediction are capable of controlling the temperature and humidity more accurately and achieving energy conservation to a great degree.

The invention discloses an intelligent control scheduling method for electric load of an air conditioner based on big data analysis. The method comprises the following steps that by collecting parameters such as habits of a user using the air conditioner, weather information, indoor temperature, air conditioner power, a BP neural network algorithm is used for obtaining an air conditioner power prediction model of different air conditioner individuals, a heat storage coefficient is calculated through temperature changes as well as air conditioner average power after an air conditioner compressor is temporarily stopped, and an indoor temperature change-shutdown time model is obtained through the air conditioner power prediction model and the heat storage coefficient; furthermore, a user desirable temperature-time fitted curve is established according to reaction behaviors of the user, and the intersection point between the fitted curve and the indoor temperature change-shutdown time model is the desirable air conditioner shutdown length of the air conditioner of the user; and finally, a desirable air conditioner load scheduling plan is arranged according to a weather forecast outdoortemperature curve, a grid load prediction curve as well as the most common usage period of the air conditioner of the user. According to the method, the occurrence of peak load of a power grid can beavoided without affecting user experience.