Control method of air conditioning system of low-energy building, electronic device and storage medium

Abstract

The application discloses a kind of control method of low-energy consumption building air conditioning system, electronic equipment and storage medium, it is related to low-energy consumption building technical field.The method comprises: obtaining historical feature data;Obtain daily feature data, and determine historical similar day according to daily feature data and historical feature data;Real-time wind direction information is obtained by wind direction sensor, and corresponding ventilation system is opened according to wind direction information to ventilate;According to the operating parameter of air conditioning system of historical similar day, the initial configuration parameter of air conditioning system of day is determined;In the operation process of air conditioning system, the return water temperature of air conditioning terminal system is acquired in real time, and according to return water temperature, the chilled water quantity of refrigerating unit is adjusted;Real-time load parameter of refrigerating unit in running state is acquired, and according to load parameter, the number of refrigerating unit in running state is delayed adjusted.According to the control method of low-energy consumption building air conditioning system of the embodiment of the application, low energy consumption can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-energy buildings, and in particular to a control method of an air conditioning system of a low-energy building, an electronic device and a storage medium. BACKGROUND

[0002] A low-energy building refers to a building that is adapted to climatic features and natural conditions, reduces the demand for heating and cooling to the maximum extent through passive technical means, maximizes the efficiency of energy equipment and systems, provides a comfortable indoor environment with the least energy consumption, and meets the standard requirements for indoor environmental parameters and energy consumption indicators.

[0003] Existing buildings usually use a central air conditioning system to meet the cooling demand, and the central air conditioning system realizes the refrigeration function through a cooling tower and a refrigeration unit. The existing central air conditioning system has high energy consumption and lacks intelligent temperature management and regulation, which does not meet the requirements of low-energy buildings. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a control method of an air conditioning system of a low-energy building, an electronic device and a storage medium, which can realize intelligent adjustment of the operating state of the air conditioning system to reduce energy consumption.

[0005] In a first aspect, the control method of an air conditioning system of a low-energy building according to an embodiment of the present application is applied to an air conditioning system of a building, the air conditioning system comprising a cooling tower, a plurality of refrigeration units and an air conditioning terminal system, the cooling tower being connected to each of the refrigeration units through a cooling water pipe, the cooling water pipe being provided with a filter device, a cooling water pump and a first temperature sensor; each of the refrigeration units is connected to the air conditioning terminal system through a corresponding chilled water pipe, the chilled water pipe being provided with a chilled water pump and a second temperature sensor; the air conditioning terminal system is connected to the refrigeration units and the cooling tower in turn through a return water pipe, the return water pipe being provided with a third temperature sensor; each orientation of the building is provided with a ventilation system, and the outdoor of the building is provided with a wind direction sensor.

[0006] The control method comprises:

[0007] Obtaining historical feature data, the parameters for determining the historical feature data including season, daily average temperature, weather and number of weeks;

[0008] Obtaining daily feature data, and determining a historically similar day according to the daily feature data and the historical feature data;

[0009] Real-time wind direction information is acquired by the wind direction sensor, and the starting time of the air conditioning system on the historical similar day is acquired; within a first preset time before the starting time, the corresponding ventilation system is opened for ventilation according to the wind direction information;

[0010] According to the operation parameters of the air conditioning system on the historical similar day, the initial configuration parameters of the air conditioning system on the current day are determined;

[0011] The air conditioning system starts to operate according to the initial configuration parameters at the starting time, and the ventilation system is closed;

[0012] In the operation process of the air conditioning system, the return water temperature of the air conditioning terminal system is acquired in real time by the third temperature sensor, and the chilled water quantity of the refrigerating unit is adjusted according to the return water temperature;

[0013] The load parameter of the refrigerating unit in the operating state is acquired in real time, and the number of refrigerating units in the operating state is adjusted in time according to the load parameter.

[0014] According to some embodiments of the present application, the historical feature data is acquired, including:

[0015] The season, the daily average temperature, the weather and the number of days corresponding to each day in a preset time period are acquired;

[0016] The season, the daily average temperature, the weather and the number of days are respectively set with corresponding correlation weights;

[0017] The historical feature data is obtained according to the season, the daily average temperature, the weather, the number of days and the correlation weights.

[0018] According to some embodiments of the present application, each chilled water pipe is provided with a flow meter and a flow regulating valve; the step of acquiring the return water temperature of the air conditioning terminal system in real time by the third temperature sensor in the operation process of the air conditioning system, and adjusting the chilled water quantity of the refrigerating unit according to the return water temperature, includes:

[0019] The return water temperature of the air conditioning terminal system is acquired in real time by the third temperature sensor, and the outlet water temperature of the refrigerating unit is acquired in real time by the second temperature sensor;

[0020] When the return water temperature is detected to rise to a first preset temperature, the flow regulating valve is adjusted to increase the chilled outlet water quantity of the refrigerating unit;

[0021] When the outlet water temperature is detected to be greater than a second preset temperature, the flow regulating valve is opened to a maximum flow, and when the maximum flow is maintained for a second preset time, if the outlet water temperature is still greater than the second preset temperature, the number of the refrigerating units in operation is increased so that the outlet water temperature is less than the second preset temperature.

[0022] According to some embodiments of the present application, the load parameter of the refrigerating units in operation is acquired in real time, including:

[0023] The number of the refrigerating units in operation and the rated refrigerating capacity are acquired;

[0024] The instantaneous refrigerating capacity of each refrigerating unit in operation is collected;

[0025] According to the instantaneous refrigerating capacity and the rated refrigerating capacity, the average load rate of the refrigerating units is determined.

[0026] According to some embodiments of the present application, the number of the refrigerating units in operation is adjusted with a time delay according to the load parameter, including:

[0027] A preset load rate is acquired;

[0028] When the average load rate exceeds the preset load rate by a first data, timing is started;

[0029] When the timing value reaches a time delay setting time, if the average load rate still exceeds the preset load rate by the first data, the number of the refrigerating units in operation is increased so that the average load rate is less than the preset load rate.

[0030] According to some embodiments of the present application, the control method further includes:

[0031] When the average load rate is less than the preset load rate by a second data, timing is started;

[0032] When the timing value reaches the time delay setting time, if the average load rate still is less than the preset load rate by the second data, the number of the refrigerating units in operation is decreased.

[0033] According to some embodiments of the present application, the control method further includes:

[0034] A temperature and humidity sensor, a wind speed sensor and a sound sensor are arranged outdoors of the building;

[0035] Temperature and humidity information outdoors is acquired by the temperature and humidity sensor, wind speed information outdoors is acquired by the wind speed sensor, and noise information outdoors is acquired by the sound sensor;

[0036] According to the temperature and humidity information, the wind speed information and the noise information, a time for opening the window ventilation is determined, and the air conditioning system is closed in the time for opening the window ventilation.

[0037] According to some embodiments of the present application, the control method further comprises:

[0038] According to the temperature and humidity information, a required temperature of the air conditioning terminal system is determined;

[0039] According to the required temperature, a cooling water temperature of the cooling tower is adjusted.

[0040] In a second aspect, an electronic device according to embodiments of the present application comprises:

[0041] a memory for storing program instructions;

[0042] a processor for invoking the program instructions stored in the memory and executing the control method of the air conditioning system of the low-energy consumption building according to the obtained program instructions.

[0043] In a third aspect, a storage medium according to embodiments of the present application stores computer executable instructions for causing a computer to execute the control method of the air conditioning system of the low-energy consumption building according to the first aspect.

[0044] The control method of the air conditioning system of the low-energy consumption building, the electronic device and the storage medium according to embodiments of the present application have at least the following beneficial effects: by obtaining historical feature data and daily feature data, a similar historical day is determined, and the initial configuration parameters of the air conditioning system on the day are set as the operation parameters of the air conditioning system on the similar historical day, so that the energy consumption can be reduced as much as possible while ensuring a suitable temperature; meanwhile, before the air conditioning system starts, the corresponding ventilation system is opened according to the wind direction information to ventilate, so as to ensure the best ventilation effect, which can purify the indoor air and keep the indoor air fresh, and can also pre-cool the indoor environment to reduce the residual heat and reduce the initial load of the air conditioning system, thereby reducing the energy consumption; during the operation of the air conditioning system, the return water temperature of the air conditioning terminal system is obtained in real time, so that the chilled water quantity of the refrigerating unit is adjusted according to the return water temperature, the load parameter of the refrigerating unit in the running state is obtained in real time, and the number of the refrigerating unit in the running state is adjusted according to the load parameter, so as to optimize the operation state of the air conditioning system as much as possible, which can ensure a suitable temperature and reduce the energy consumption; moreover, the method of delayed adjustment can avoid too frequent change of the system state.

[0045] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0047] Figure 1 Structure diagram of air conditioning system of embodiment of the present application;

[0048] Figure 2 Step flow chart of control method of air conditioning system of low energy consumption building of embodiment of the present application;

[0049] REFERENCE NUMERALS:

[0050] Cooling tower 100, cooling water pipe 110, filtering device 120, cooling water pump 130, first temperature sensor 140, refrigeration unit 200, chilled water pipe 210, chilled water pump 220, second temperature sensor 230, air conditioning terminal system 300, return water pipe 310, third temperature sensor 320. DETAILED DESCRIPTION

[0051] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example embodiments in which the same or similar elements or elements having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the drawings are exemplary and are intended only for the purpose of explaining the present application, and should not be construed as limiting the present application. For the step numbers in the following embodiments, they are only set for the convenience of setting out the description, and the order between the steps is not limited in any way, and the execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0052] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0053] The terms "first", "second", "third", and "fourth" and the like in the description and in the claims of the present application and in the accompanying drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprises", "comprising", "includes", "including", "has", "having" and the like are intended to cover a non-exclusive inclusion such that a process, method, system, product, or apparatus that comprises, includes, has, or the like, a list of steps or units can optionally comprise, include, have, or the like, other steps or units not expressly listed or inherent to such process, method, system, product, or apparatus. The terms "comprises", "comprising", "includes", "including", "has", "having" and the like are intended to cover a non-exclusive inclusion such that a process, method, system, product, or apparatus that comprises, includes, has, or the like, a list of steps or units can optionally comprise, include, have, or the like, other steps or units not expressly listed or inherent to such process, method, system, product, or apparatus.

[0054] Reference to "an embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, nor are they necessarily all mutually exclusive or alternative embodiments.

[0055] Low energy consumption building refers to a building that is adapted to climatic features and natural conditions, reduces the demand for heating and cooling by passive technical means to the maximum extent, maximizes the efficiency of energy equipment and systems, and provides a comfortable indoor environment with the least energy consumption, and the indoor environment parameters and energy consumption indicators meet the standard requirements.

[0056] Existing buildings usually use central air conditioning systems to meet the cooling demand, and the central air conditioning system usually realizes the refrigeration function through cooling towers and refrigeration units. The existing central air conditioning system has high energy consumption and lacks intelligent temperature management and regulation, which does not meet the requirements of low energy consumption buildings.

[0057] To this end, the embodiment of the present application provides a control method, an electronic device and a storage medium of an air conditioning system of a low-energy-consumption building, by acquiring historical feature data and daily feature data, a historical similar day is determined, and the initial configuration parameter of the air conditioning system on the day is set as the operation parameter of the air conditioning system on the historical similar day, so that the energy consumption can be reduced as much as possible while ensuring the appropriate temperature; at the same time, before the air conditioning system starts, the corresponding ventilation system is opened according to the wind direction information to ventilate, so as to ensure the best ventilation effect, which can purify the indoor air and keep the indoor air fresh, and on the other hand, the indoor environment can be pre-cooled to reduce the residual heat and reduce the initial load of the air conditioning system, thereby reducing the energy consumption; in the operation process of the air conditioning system, the return water temperature of the air conditioning terminal system is acquired in real time, so that the chilled water quantity of the refrigerating unit is adjusted according to the return water temperature, the load parameter of the refrigerating unit in the running state is acquired in real time, and the number of refrigerating units in the running state is adjusted in time according to the load parameter, so as to optimize the running state of the air conditioning system as much as possible, which can ensure the appropriate temperature and reduce the energy consumption; and moreover, the method of time-delay adjustment can avoid the too frequent change of the system state.

[0058] The control method, the electronic device and the storage medium of the air conditioning system of the low-energy-consumption building will be described in detail below in combination with the accompanying drawings. Figure 1 And 2 The control method, the electronic device and the storage medium of the air conditioning system of the low-energy-consumption building will be described in detail below in combination with the accompanying drawings.

[0059] On the one hand, the embodiment of the present application provides a control method of an air conditioning system of a low-energy-consumption building, which is applied to the air conditioning system of the building, such as Figure 1As shown, the air conditioning system comprises a cooling tower 100, a plurality of refrigeration units 200 and an air conditioning terminal system 300, the cooling tower 100 is connected with each refrigeration unit 200 through a cooling water pipe 110, the cooling water pipe 110 is provided with a filtering device 120, a cooling water pump 130 and a first temperature sensor 140; each refrigeration unit 200 is connected with the air conditioning terminal system 300 through a corresponding chilled water pipe 210, the chilled water pipe 210 is provided with a chilled water pump 220 and a second temperature sensor 230; the air conditioning terminal system 300 is connected with the refrigeration unit 200 and the cooling tower 100 in turn through a return water pipe 310, the return water pipe 310 is provided with a third temperature sensor 320. Wherein, in the circulating water system of the air conditioning system, there may be unstable water quality or pollutants in the water, in order to ensure good water quality, the filtering device 120 is arranged on the cooling water pipe 110 to filter the cooling water provided by the cooling tower 100 and absorb impurities, thereby improving the water quality. The cooling water provided by the cooling tower 100 is filtered by the filtering device 120, and under the action of the cooling water pump 130, enters the refrigeration unit 200 through the cooling water pipe 110, so that the refrigeration unit 200 generates chilled water, the chilled water enters the air conditioning terminal system 300 under the action of the chilled water pump 220, so that the air conditioning terminal system 300 realizes the refrigeration function, and the air conditioning return water after refrigeration returns to the refrigeration unit 200 and the cooling tower 100 through the return water pipe 310. The first temperature sensor 140 is used for detecting the temperature of the cooling water provided by the cooling tower 100, the second temperature sensor 230 is used for detecting the temperature of the chilled water provided by the refrigeration unit 200, and the third temperature sensor 320 is used for detecting the temperature of the return water of the air conditioning terminal system 300. A ventilation system is arranged at each orientation of the building, and a wind direction sensor is arranged outdoors of the building, the ventilation system can be a ventilation window or a fan, and is used for ventilating the indoor of the building, and the wind direction sensor is used for detecting the wind direction information of the outdoor. As shown in the figure, Figure 2 As shown, the control method of the air conditioning system of the low-energy-consumption building according to the embodiment of the application comprises the following steps:

[0060] Step S100: acquire historical feature data, the parameters on which the historical feature data are based include season, daily average temperature, weather and week number;

[0061] The historical characteristic data refers to the environmental condition of each day in the past, and is used to provide a reference for the operation data of the air conditioning system on the current day, so as to reasonably configure the air conditioning system. In order to make the historical characteristic data more valuable and more in line with the actual situation, the parameters of the historical characteristic data include season, daily average temperature, weather and week number. Different seasons have different temperatures, for example, in summer, the weather is hot, and the cooling temperature of the air conditioning system needs to be relatively low, while in winter, the weather is cold, and the cooling temperature of the air conditioning system needs to be relatively high; for the same season, the temperature of each day is different, for the daily average temperature, the cooling temperature of the air conditioning system needs to be relatively low, and for the daily average temperature, the cooling temperature of the air conditioning system needs to be relatively high; the weather also affects the temperature required by the air conditioning system, for example, in sunny and strong light, the cooling temperature of the air conditioning system needs to be relatively low, and in rainy and windy weather, the cooling temperature of the air conditioning system needs to be relatively high; the week number means which day of the week, for some office buildings, there is usually a cooling demand on weekdays, and the cooling demand is less on weekends, or the air conditioning system is not started, therefore, the week number also affects the operation data of the air conditioning system. By collecting the operation data of the air conditioning system under different conditions in the past, a reference can be provided for the operation data of the air conditioning system on the current day, so as to reduce energy consumption while ensuring appropriate temperature. It should be noted that in order to obtain the historical characteristic data, the following three steps can be taken:

[0062] (1) obtaining the season, daily average temperature, weather and week number corresponding to each day in a predetermined time period;

[0063] (2) setting corresponding correlation weights for the season, daily average temperature, weather and week number, respectively;

[0064] (3) obtaining the historical characteristic data according to the season, daily average temperature, weather and week number and the correlation weights.

[0065] The predetermined time period is determined according to the actual situation, which can be several years or several months; then, according to the nature of the building, the importance of the season, daily average temperature, weather and week number on the temperature of the air conditioning system is determined, and reasonable correlation weights are set for each parameter according to the importance, the parameter with the greatest influence on the temperature of the air conditioning system has the greatest correlation weight, and the parameter with the least influence on the temperature of the air conditioning system has the least correlation weight. Finally, after quantizing the season, daily average temperature, weather and week number, multiplying them by the corresponding correlation weights and adding them up, the daily historical characteristic data is obtained.

[0066] Step S200: obtaining the current day characteristic data, and determining the historical similar day according to the current day characteristic data and the historical characteristic data;

[0067] When the parameters of the daily feature data are the same as those of the historical feature data and the acquisition method is also the same as that of the historical feature data, the daily average temperature and the weather recorded in the meteorological data can be used as reference data when the daily feature data is acquired. After the daily feature data is acquired, the historical feature data closest to the daily feature data is found, and the day is taken as the historical similar day of the day.

[0068] Step S300: Real-time acquisition of wind direction information by a wind direction sensor, acquisition of the start time of the air conditioning system of the historical similar day, and opening of the corresponding ventilation system for ventilation according to the wind direction information within a first preset time before the start time;

[0069] Before the start time of the air conditioning system, the corresponding ventilation system is opened for ventilation according to the wind direction information, so as to ensure the best ventilation effect. On the one hand, indoor air can be purified to keep the indoor air fresh. On the other hand, the indoor environment can be pre-cooled to reduce residual heat and reduce the initial load of the air conditioning system, thereby reducing energy consumption.

[0070] Step S400: Determination of the initial configuration parameters of the air conditioning system of the day according to the operation parameters of the air conditioning system of the historical similar day;

[0071] By taking the operation parameters of the air conditioning system of the historical similar day as the initial configuration parameters of the air conditioning system of the day, the appropriate temperature can be ensured while reducing energy consumption. The initial configuration parameters of the air conditioning system can include the cooling water temperature of the cooling tower 100, the chilled water temperature of the chiller unit 200, the number of chiller units 200 in the running state, the start time of the air conditioning system, etc.

[0072] Step S500: The air conditioning system starts running according to the initial configuration parameters at the start time, and the ventilation system is closed;

[0073] After the air conditioning system starts running, the ventilation system is closed to ensure the refrigeration effect of the air conditioning system and reduce the energy consumption of the air conditioning system.

[0074] Step S600: Real-time acquisition of the return water temperature of the air conditioning terminal system 300 by the third temperature sensor 320 during the running of the air conditioning system, and adjustment of the chilled water quantity of the chiller unit 200 according to the return water temperature;

[0075] In order to facilitate the adjustment of the chilled water quantity of the chiller unit 200, each chilled water pipe 210 is provided with a flow meter and a flow regulating valve 240. Specifically, step S600 includes the following three steps:

[0076] (1) Real-time acquisition of the return water temperature of the air conditioner terminal system 300 through the third temperature sensor 320 and real-time acquisition of the chilled water outlet temperature of the chiller unit 200 through the second temperature sensor 230;

[0077] (2) When the return water temperature is detected to rise to the first preset temperature, the flow regulating valve 240 is adjusted to increase the chilled water outlet quantity of the chiller unit 200;

[0078] (3) When the chilled water outlet temperature is detected to be greater than the second preset temperature, the flow regulating valve 240 is opened to the maximum flow, and when the maximum flow is maintained for the second preset time, if the chilled water outlet temperature is still greater than the second preset temperature, the number of the chiller units 200 in the running state is increased so that the chilled water outlet temperature is less than the second preset temperature.

[0079] When the load of the air conditioner terminal system 300 increases, the return water temperature of the air conditioner gradually rises to the first preset temperature (set according to the actual situation), at which time the chiller unit 200 needs to adjust the load to increase the chilled water quantity. When the load of the air conditioner terminal system 300 increases to a certain extent, the chilled water outlet temperature of the chiller unit 200 is greater than the second preset temperature (set according to the actual situation, the second preset temperature is greater than the first preset temperature), at which time the flow regulating valve 240 is opened to the maximum flow, the air conditioning system starts the load delay, and when the load delay exceeds the second preset time (set according to the actual need), if the chilled water outlet temperature is still higher than the second preset temperature, the air conditioning system performs the machine adding action to increase the number of the chiller units 200 in the running state so that the chilled water outlet temperature is less than the second preset temperature, thereby reducing the load of the chiller unit 200. When the load of the air conditioner terminal system 300 decreases, the return water temperature of the air conditioner gradually decreases, and when it decreases to a certain extent, at which time the chiller unit 200 can reduce the load to reduce the chilled water quantity, thereby reducing the energy consumption.

[0080] Step S700: Real-time acquisition of the load parameter of the chiller unit 200 in the running state, and delay adjustment of the number of the chiller units 200 in the running state according to the load parameter.

[0081] Specifically, in order to acquire the load parameter of the chiller unit 200, the following three steps are included:

[0082] (1) Acquisition of the number of the chiller units 200 in the running state and the rated refrigerating capacity;

[0083] (2) Acquisition of the instantaneous refrigerating capacity of each chiller unit 200 in the running state;

[0084] (3) Determination of the average load rate of the chiller unit 200 according to the instantaneous refrigerating capacity and the rated refrigerating capacity.

[0085] First, determine the number of operating refrigeration units 200 and the rated cooling capacity of each refrigeration unit 200. Then, during the operation of the refrigeration units 200, collect the instantaneous cooling capacity of each refrigeration unit 200. According to the instantaneous cooling capacity and the rated cooling capacity, the average load rate of the refrigeration units 200 can be calculated. The calculation formula is as follows:

[0086] S = ∑Q i ÷∑Q j ;

[0087] Among them, S represents the average load rate, ∑Q i represents the sum of the instantaneous cooling capacities of all the refrigeration units 200, ∑Q j represents the sum of the rated cooling capacities of all the refrigeration units 200. i and j are positive integers, 0 < i ≤ n, 0 < j ≤ n, and n is the number of operating refrigeration units 200.

[0088] After calculating the average load rate of the refrigeration units 200, step S700 delays the adjustment of the number of operating refrigeration units 200 according to the load parameters, including the following three steps:

[0089] (1) Obtain the preset load rate;

[0090] (2) When the average load rate exceeds the preset load rate by a first data, start timing;

[0091] (3) When the timing value reaches the delay set time, if the average load rate still exceeds the preset load rate by the first data, increase the number of operating refrigeration units to make the average load rate lower than the preset load rate.

[0092] Among them, the preset load rate represents the load rate when the refrigeration unit 200 is in normal operation. If the average load rate of the refrigeration unit is too large, exceeding the preset load rate and being larger than the first data (set according to the actual situation) than the preset load rate, it indicates that the refrigeration unit 200 is in an overload state. It is necessary to increase the number of operating refrigeration units 200, reduce the load rate of each refrigeration unit 200, make the average load rate lower than the preset load rate, and ensure the normal operation of the refrigeration unit 200.

[0093] In addition, step S700 delays the adjustment of the number of operating refrigeration units according to the load parameters, and also includes the following two steps:

[0094] (1) When the average load rate is lower than the preset load rate by a second data, start timing;

[0095] (2) When the time counting value reaches the delay setting time, if the average load rate is still lower than the preset load rate by a second data, the number of the refrigerating units 200 in the running state is reduced.

[0096] If the average load rate of the refrigerating units 200 is relatively small, lower than the preset load rate by a certain degree, when the average load rate is lower than the preset load rate by a second data (set according to actual situation), the refrigerating units 200 are in a low load state, and when the refrigerating units 200 maintain the low load state for a period of time (delay setting time), the number of the refrigerating units 200 in the running state can be reduced, thereby reducing energy consumption.

[0097] The air conditioning system sets the machine adding and reducing delay program, and only when the delay setting time is met, the machine adding and reducing (increasing / decreasing the number of refrigerating units) action is performed, thereby avoiding frequent start and stop of the refrigerating units 200 and reducing the influence on the system stability.

[0098] Further, in some embodiments of the present application, the control method of the air conditioning system of the low-energy-consumption building further includes the following three steps:

[0099] (1) A temperature and humidity sensor, a wind speed sensor and a sound sensor are arranged outdoors of the building;

[0100] (2) The temperature and humidity information outdoors is obtained by the temperature and humidity sensor, the wind speed information outdoors is obtained by the wind speed sensor, and the noise information outdoors is obtained by the sound sensor;

[0101] (3) According to the temperature and humidity information, the wind speed information and the noise information, the time for opening the window for ventilation is determined, and during the time for opening the window for ventilation, the air conditioning system is turned off.

[0102] The temperature and humidity information, the wind speed information and the noise information outdoors are obtained by the temperature and humidity sensor, the wind speed sensor and the sound sensor, when it is detected that the temperature and humidity outdoors are suitable, there is a certain wind speed, and the noise is relatively low, in order to reduce energy consumption, the operation of the air conditioning system can be stopped, and the window is opened for ventilation, thereby ensuring the comfort of the indoor environment while maintaining low energy consumption.

[0103] Further, in some embodiments of the present application, the control method of the air conditioning system of the low-energy-consumption building further includes the following two steps:

[0104] (1) The required temperature of the air conditioning terminal system 300 is determined according to the temperature and humidity information;

[0105] (2) The cooling water temperature of the cooling tower 100 is adjusted according to the required temperature.

[0106] The temperature and humidity information of the outdoor environment is detected in real time by the temperature and humidity sensor, the temperature of the indoor environment is adjusted in real time according to the temperature and humidity information of the outdoor environment, that is, the required temperature of the air-conditioning terminal system 300 is adjusted, and the cooling water temperature of the cooling tower 100 is adjusted according to the required temperature of the air-conditioning terminal system 300, so that the comfort of the indoor environment is ensured while the energy consumption is low.

[0107] The control method of the air-conditioning system of the low-energy-consumption building according to the embodiment of the present application can determine the historical similar day by obtaining the historical feature data and the feature data of the current day, and set the initial configuration parameter of the air-conditioning system of the current day as the operation parameter of the air-conditioning system of the historical similar day, so that the temperature is ensured to be appropriate and the energy consumption is reduced as much as possible; meanwhile, before the air-conditioning system is started, the corresponding ventilation system is opened to ventilate according to the wind direction information, so that the best ventilation effect is ensured, which can purify the indoor air and keep the indoor air fresh, and pre-cool the indoor environment to reduce the residual heat and the initial load of the air-conditioning system, thereby reducing the energy consumption; during the operation of the air-conditioning system, the return water temperature of the air-conditioning terminal system is obtained in real time, so that the chilled water quantity of the chiller unit 200 is adjusted according to the return water temperature, the load parameter of the chiller unit 200 in the running state is obtained in real time, and the number of the chiller unit 200 in the running state is adjusted according to the load parameter, so that the operation state of the air-conditioning system is optimized as much as possible, the temperature is ensured to be appropriate, and the energy consumption is reduced.

[0108] In addition, the embodiment of the present application also provides an electronic device, which comprises:

[0109] a memory for storing program instructions;

[0110] a processor for calling the program instructions stored in the memory and executing the control method of the air-conditioning system of the low-energy-consumption building according to the obtained program instructions.

[0111] The processor can be implemented by a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, and is used for executing related programs to realize the technical solutions provided by the embodiment of the present application.

[0112] The memory can be implemented in the form of read only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM), etc. The memory can store an operating system and other application programs. When the technical solutions provided by the bicycle electronic derailleur gear shifting control method of the embodiments of the present specification are implemented by software or firmware, the relevant program codes are stored in the memory and are called and executed by the processor. The memory and the processor can be connected through a bus or the like.

[0113] In another aspect, the embodiments of the present application also provide a storage medium, which is a computer readable storage medium, and the storage medium stores a computer program. The computer program is executed by a processor to implement the control method of the air conditioning system of a low energy consumption building.

[0114] The memory, as a non-transitory computer readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory remotely arranged with respect to the processor, and these remote memories can be connected to the processor through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. The above-described device embodiments are only schematic, and units described as separate components can or can not be physically separated, and can be implemented in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0115] Although specific embodiments are described herein, one of ordinary skill in the art will recognize that many other modifications or alternative embodiments can be within the scope of the present disclosure. For example, any of the functions and / or processing capabilities described in connection with a particular device or component can be performed by any other device or component. Additionally, while various example implementations and architectures have been described in accordance with embodiments of the present disclosure, one of ordinary skill in the art will recognize that many other modifications to the example implementations and architectures described herein are within the scope of the present disclosure.

[0116] Certain aspects of the disclosure are described above with reference to block and flow diagrams of systems, methods, system and / or computer program products according to exemplary embodiments. It will be understood that one or more of the blocks of the block diagrams and flow diagrams, and combinations of blocks in the block diagrams and flow diagrams, can be implemented by

[0117] Accordingly, the blocks in the block diagrams and flow diagrams support combinations of means for performing the specified functions, combinations of elements or steps for performing the specified functions, and program instruction means for performing the specified functions. It will also be understood that each block of the block diagrams and flow diagrams, and combinations of blocks in the block diagrams and flow diagrams, can be implemented by dedicated hardware-based computer systems which perform the specified functions or combinations of special-purpose hardware and computer instructions.

[0118] The program modules, applications, and the like described herein can include one or more software components, including, for example, software objects, methods, data structures, and the like. Each such software component can include computer-executable instructions that, in response to execution by a computer, cause at least a portion of the functionality described herein (e.g., one or more operations of the example methods described herein) to be performed.

[0119] Software components can be coded in any of a variety of programming languages. One illustrative programming language can be a low-level programming language, such as an assembly language associated with a particular hardware architecture and / or operating system platform. Software components including assembly language instructions can need to be translated via an assembler before execution by the hardware architecture and / or platform. Another illustrative programming language can be a higher-level programming language that can be portable across multiple architectures. Software components including a higher-level programming language can need to be translated via an interpreter or compiler before execution. Other examples of programming languages include, but are not limited to, a macro-language, a shell or command language, a job control language, a script language, a database query or search language, or a report writing language. In one or more example embodiments, a software component including instructions in one of the above-described examples of programming languages can be executed directly by an operating system or other software component without first being converted to another form.

[0120] Software components can be stored as files or other data storage constructs. Software components of a similar type or related function can be stored together in a particular directory, folder, or library, for example. Software components can be static (e.g., pre-set or fixed) or dynamic (e.g., created or modified at execution time).

[0121] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A control method of an air conditioning system of a low energy consumption building, characterized by, The application relates to an air conditioning system applied to a building, which comprises a cooling tower, a plurality of refrigerating units and an air conditioning terminal system, the cooling tower is connected with each refrigerating unit through a cooling water pipe, a filtering device, a cooling water pump and a first temperature sensor are arranged on the cooling water pipe; each refrigerating unit is connected with the air conditioning terminal system through a corresponding refrigerating water pipe, a refrigerating water pump and a second temperature sensor are arranged on the refrigerating water pipe; the air conditioning terminal system is connected with the refrigerating units and the cooling tower in sequence through a return water pipe, a third temperature sensor is arranged on the return water pipe; a ventilation system is arranged at each orientation of the building, and a wind direction sensor is arranged outdoors of the building. The control method comprises: obtaining historical feature data, wherein the parameters of the historical feature data include season, daily average temperature, weather and week number; obtaining daily feature data, and determining a historical similar day according to the daily feature data and the historical feature data; obtaining wind direction information through the wind direction sensor, obtaining the starting time of the air conditioning system of the historical similar day, and opening the corresponding ventilation system for ventilation within a first preset time before the starting time according to the wind direction information; determining the initial configuration parameters of the air conditioning system of the day according to the operation parameters of the air conditioning system of the historical similar day; starting the operation of the air conditioning system according to the initial configuration parameters at the starting time, and closing the ventilation system; obtaining the return water temperature of the air conditioning terminal system through the third temperature sensor in the operation process of the air conditioning system, and adjusting the refrigerating water quantity of the refrigerating unit according to the return water temperature; obtaining the load parameter of the refrigerating unit in the running state in real time, and adjusting the number of refrigerating units in the running state according to the load parameter; the real-time obtaining of the load parameter of the refrigerating unit in the running state comprises: obtaining the number of refrigerating units in the running state and the rated refrigerating capacity; collecting the instantaneous refrigerating capacity of each refrigerating unit in the running state; determining the average load rate of the refrigerating unit according to the instantaneous refrigerating capacity and the rated refrigerating capacity; the adjustment of the number of refrigerating units in the running state according to the load parameter comprises: obtaining a preset load rate; starting timing when the average load rate exceeds the preset load rate by a first data; when the timing value reaches the delay setting time, if the average load rate still exceeds the preset load rate by the first data, the number of refrigerating units in the running state is increased, so that the average load rate is lower than the preset load rate. The control method further comprises: starting timing when the average load rate is lower than the preset load rate by a second data; when the timing value reaches the delay setting time, if the average load rate is still lower than the preset load rate by the second data, the number of refrigerating units in the running state is reduced.

2. The control method of a low-energy building air conditioning system according to claim 1, wherein the obtaining of the historical feature data comprises: obtaining the season, daily average temperature, weather and week number corresponding to each day in a preset time period. Corresponding correlation weights are set for the season, the daily average temperature, the weather and the week number respectively; The historical feature data is obtained according to the season, the daily average temperature, the weather, the week number and the correlation weights.

3. The control method of an air conditioning system for a low-energy building according to claim 1, wherein Each of the chilled water pipes is provided with a flow meter and a flow regulating valve; the step of adjusting the chilled water quantity of the refrigerating unit according to the return water temperature of the air conditioning terminal system in the operation process of the air conditioning system comprises: The return water temperature of the air conditioning terminal system is obtained in real time through the third temperature sensor, and the outlet water temperature of the refrigerating unit is obtained in real time through the second temperature sensor; When the return water temperature is detected to rise to a first preset temperature, the flow regulating valve is adjusted to increase the chilled water quantity of the refrigerating unit; When the outlet water temperature is detected to be greater than a second preset temperature, the flow regulating valve is opened to the maximum flow; when the maximum flow is maintained for a second preset time, if the outlet water temperature is still greater than the second preset temperature, the number of the refrigerating units in operation is increased so that the outlet water temperature is less than the second preset temperature; the second preset temperature is greater than the first preset temperature.

4. The control method of an air conditioning system for a low-energy building according to claim 1, wherein The control method further comprises: A temperature and humidity sensor, a wind speed sensor and a sound sensor are arranged outdoors of the building; The temperature and humidity information outdoors is obtained through the temperature and humidity sensor, the wind speed information outdoors is obtained through the wind speed sensor, and the noise information outdoors is obtained through the sound sensor; According to the temperature and humidity information, the wind speed information and the noise information, the time for opening the window for ventilation is determined, and the air conditioning system is turned off in the time for opening the window for ventilation.

5. The control method of an air conditioning system for a low-energy building according to claim 4, wherein The control method further comprises: According to the temperature and humidity information, the required temperature of the air conditioning terminal system is determined; According to the required temperature, the cooling water temperature of the cooling tower is adjusted.

6. An electronic device, comprising: It comprises: A memory for storing program instructions; A processor for calling the program instructions stored in the memory and executing the control method of the air conditioning system of the low-energy building according to the obtained program instructions.

7. A storage medium, characterized by The storage medium stores computer executable instructions, and the computer executable instructions are used to make the computer execute the control method of the air conditioning system of the low-energy building. The storage medium stores computer executable instructions, and the computer executable instructions are used to make the computer execute the control method of the air conditioning system of the low-energy building.

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