An air conditioning control device, method, computing device, and storage medium.

Abstract

This application provides an air conditioning control device, method, computing device, and storage medium. The device includes: a flow rate determination module, used to determine the required flow rate of chilled water for the air conditioner based on the rated flow rate of chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand; a resistance determination module, used to determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of chilled water; and an electric valve control module, used to adjust the electric valve based on the target opening degree corresponding to the target resistance value. By adjusting the electric valve to a suitable opening degree under the target cooling demand, an appropriate amount of chilled water is output, reducing the occurrence of situations where the target cooling demand is not met due to insufficient chilled water output, or unnecessary power consumption is generated due to excessive chilled water output.

Description

Technical Field

[0001] This application relates to the field of intelligent control, and more particularly to an air conditioning control device, method, computing device, and storage medium. Background Technology

[0002] With the development of technology, the number of data centers is increasing and their distribution is becoming more widespread. Servers in data centers generate a lot of heat, which is cooled by chilled water supplied by fan coil air conditioners.

[0003] In related technologies, when the temperature in the data center is high, staff will increase the opening of the air conditioner's electric valve; when the temperature in the data center is low, the opening of the air conditioner's electric valve will decrease.

[0004] However, it is difficult to adjust the electric valve to the appropriate opening degree using the above methods. Therefore, the chilled water flow of the air conditioner cannot be accurately controlled, which may result in the inability to meet the cooling demand or generate unnecessary power consumption. Summary of the Invention

[0005] This application provides an air conditioning control device, method, computing device, and storage medium for accurately controlling the chilled water flow rate of an air conditioner.

[0006] In a first aspect, embodiments of this application provide an air conditioning control device, the device comprising:

[0007] The flow rate determination module is used to determine the required flow rate of chilled water for the air conditioner based on the rated flow rate of chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0008] The resistance determination module is used to determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0009] An electric valve control module is used to adjust the electric valve based on the target opening degree corresponding to the target resistance value.

[0010] The above solution, since the target resistance value of the electric valve is obtained based on the current target cooling demand, can adjust the electric valve to a suitable opening degree under the target cooling demand by adjusting the target opening degree corresponding to the target resistance value. This allows the electric valve to output an appropriate amount of chilled water, reducing the occurrence of situations where the target cooling demand is not met due to insufficient chilled water output, or unnecessary power consumption due to excessive chilled water output.

[0011] In some optional implementations, if the electric valve has not been opened before the target resistance value of the electric valve is determined, the resistance determination module is further configured to determine the water resistance of the electric valve in the following manner:

[0012] Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil;

[0013] The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

[0014] In the above scheme, if the electric valve is not opened before the target resistance value is determined, no chilled water flows through the electric valve. Therefore, it is necessary to determine the water resistance of the electric valve based on the inlet pressure of the electric valve, the outlet pressure of the coil, and the water resistance of the coil and the pipeline.

[0015] In some alternative implementations, if the electric valve has been opened before the target resistance value of the electric valve is determined, the resistance determination module is further configured to determine the water resistance of the electric valve in the following manner:

[0016] The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

[0017] In the above scheme, if the electric valve has been opened before the target resistance value is determined, and chilled water is flowing through the electric valve, the water resistance of the electric valve can be obtained by subtracting the outlet pressure of the electric valve from the inlet pressure of the electric valve.

[0018] In some optional implementations, the electric valve control module is specifically used for:

[0019] Determine the deviation of the actual opening degree of the electric valve from the target opening degree;

[0020] If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

[0021] The above solution determines the deviation of the actual opening degree of the electric valve from the target opening degree; only when this deviation is not within the preset deviation range will the electric valve be adjusted to the target opening degree, thus avoiding excessively frequent adjustments to the electric valve.

[0022] In some optional implementations, the flow determination module is specifically used for:

[0023] The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient.

[0024] The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature of the coil and the inlet water temperature of the coil in the air conditioner.

[0025] The above scheme determines the target flow rate by multiplying the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient. Based on the first ratio mentioned above, the target flow rate is adjusted, taking into account the influence of the outlet and inlet water temperatures of the coil, to obtain a more accurate chilled water demand flow rate.

[0026] In some optional implementations, the flow rate determination module is further configured to obtain the target cooling demand in the following manner:

[0027] Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner;

[0028] The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

[0029] The above scheme is based on the fact that the actual cooling capacity of the air conditioner is different from the rated cooling capacity. Therefore, the current cooling demand is adjusted based on the ratio of the rated cooling capacity to the actual cooling capacity to obtain a more accurate target cooling demand that represents the size of the cooling demand.

[0030] In some optional implementations, the electric valve control module is further configured to determine, before adjusting the electric valve based on the target opening corresponding to the target resistance value, that the target resistance value is less than a preset maximum resistance value and greater than a preset minimum resistance value.

[0031] The above scheme indicates that the target resistance value is less than the preset maximum resistance value and greater than the preset minimum resistance value, which means that the determined chilled water flow rate will not be too large or too small. The electric valve can be adjusted based on the target opening degree corresponding to the target resistance value.

[0032] In some optional implementations, the electric valve control module is further used for:

[0033] If the target resistance value is not less than the preset maximum resistance value, then the electric valve is opened to the preset maximum opening degree, and a high flow warning is issued; or

[0034] If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

[0035] In the above scheme, if the target resistance value is not less than the preset maximum resistance value, it indicates that the chilled water demand flow rate is too high. At this time, the electric valve needs to be opened to the preset maximum opening degree to output a large amount of chilled water, and a high flow rate warning should be issued at the same time. If the target resistance value is not greater than the preset minimum resistance value, it indicates that the chilled water demand flow rate is too low. At this time, the electric valve needs to be opened to the preset minimum opening degree to output a small amount of chilled water, and a low flow rate warning should be issued at the same time.

[0036] Secondly, embodiments of this application also provide an air conditioning control method, including:

[0037] The required chilled water flow rate of the air conditioner is determined based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0038] The target resistance value of the electric valve is determined based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0039] The electric valve is adjusted based on the target opening degree corresponding to the target resistance value.

[0040] In some alternative implementations, if the electric valve has not been opened before the target resistance value of the electric valve is determined, the water resistance of the electric valve is determined by the following method:

[0041] Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil;

[0042] The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

[0043] In some alternative implementations, if the electric valve has been opened before the target resistance value of the electric valve is determined, the water resistance of the electric valve is determined in the following manner:

[0044] The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

[0045] In some optional implementations, adjusting the electric valve based on the target opening degree corresponding to the target resistance value includes:

[0046] Determine the deviation of the actual opening degree of the electric valve from the target opening degree;

[0047] If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

[0048] In some optional implementations, the required chilled water flow rate of the air conditioner is determined based on the rated chilled water flow rate, the target cooling demand, and the target coil heat output characteristic coefficient, including:

[0049] The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient.

[0050] The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature of the coil and the inlet water temperature of the coil in the air conditioner.

[0051] In some alternative implementations, the target cooling requirement is obtained in the following ways:

[0052] Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner;

[0053] The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

[0054] In some optional implementations, before adjusting the electric valve based on the target opening corresponding to the target resistance value, the method further includes:

[0055] The target resistance value is determined to be less than the preset maximum resistance value and greater than the preset minimum resistance value.

[0056] In some optional implementations, the method further includes:

[0057] If the target resistance value is not less than the preset maximum resistance value, then the electric valve is opened to the preset maximum opening degree, and a high flow warning is issued; or

[0058] If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

[0059] Thirdly, embodiments of this application provide a computing device, including at least one processor and at least one memory, wherein the memory stores a computer program, and when the program is executed by the processor, the processor performs any of the air conditioning control methods described in the second aspect above.

[0060] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program executable by a computing device, which, when run on the computing device, causes the computing device to perform any of the air conditioning control methods described in the second aspect above.

[0061] Furthermore, the technical effects of any of the implementation methods in aspects two to four can be found in the technical effects of different implementation methods in aspect one, and will not be repeated here. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 A system architecture diagram of an air conditioner provided in an embodiment of this application;

[0064] Figure 2 A flowchart illustrating the first air conditioning control method provided in this application embodiment;

[0065] Figure 3 A flowchart illustrating the second air conditioning control method provided in this application embodiment;

[0066] Figure 4 A flowchart illustrating the third air conditioning control method provided in this application embodiment;

[0067] Figure 5 A flowchart illustrating the fourth air conditioning control method provided in this application embodiment;

[0068] Figure 6 This is a schematic diagram of the structure of an air conditioning control device provided in an embodiment of this application;

[0069] Figure 7 This is a schematic diagram of the structure of a computing device provided in an embodiment of this application. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0071] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0072] In this embodiment, the term "coil" refers to the heat exchanger coil in an air conditioner.

[0073] Servers in data centers generate a lot of heat, which is cooled by chilled water supplied by fan coil air conditioners. In related technologies, when the data center temperature is high, staff increase the opening of the air conditioner's electric valve; when the data center temperature is low, the opening of the air conditioner's electric valve is decreased.

[0074] However, it is difficult to adjust the electric valve to the appropriate opening degree using the above methods. Therefore, the chilled water flow of the air conditioner cannot be accurately controlled, which may result in the inability to meet the cooling demand or generate unnecessary power consumption.

[0075] In view of this, embodiments of this application propose an air conditioning control device, method, computing device, and storage medium for accurately controlling the chilled water flow rate of an air conditioner.

[0076] See Figure 1 The diagram shown is a system architecture diagram of the air conditioner provided in this embodiment. In this embodiment, the air conditioner includes a computing device 100, an electric valve 200, and a coil 300; the computing device 100 is connected to the electric valve 200.

[0077] During implementation, a sensor is installed at point 200 of the electric valve, such as... Figure 1 As shown, a pressure sensor 201 is installed at the inlet of the electric valve 200 to collect the inlet pressure P1; a pressure sensor 202 is installed at the outlet of the electric valve 200 to collect the outlet pressure P2; and a temperature sensor 301 is installed at the inlet of the coil 300 to collect the inlet water temperature T. W1 A temperature sensor 302 is installed at the outlet of coil 300 to collect the outlet water temperature T of the coil. W2 A pressure sensor 303 is installed at the outlet of the coil 300 to collect the outlet pressure P3 of the coil.

[0078] The computing device 100 can acquire relevant measurement parameters of the electric valve 200 and the coil 300 (such as the parameters collected by the aforementioned sensors); it can also determine the target resistance value based on these parameters, and adjust the electric valve 200 based on the target opening degree corresponding to the target resistance value.

[0079] The application scenarios described above are merely illustrative and are not intended to limit the scope of this application. For example, more or fewer sensors may be used in implementation.

[0080] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0081] This application provides a first air conditioning control method, which can be applied to the aforementioned computing device, such as... Figure 2 As shown, it includes the following steps:

[0082] Step S201: Determine the required chilled water flow rate of the air conditioner based on the rated chilled water flow rate, target cooling demand, and target coil heat output characteristic coefficient.

[0083] Wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0084] This embodiment does not limit the specific implementation method for determining the required flow rate of chilled water. An example is provided:

[0085] 1) In some optional implementations, the chilled water demand flow rate is determined by multiplying the rated flow rate of the chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient.

[0086] Since the required chilled water volume is affected not only by the target cooling demand but also by the water temperature, the product of the above three parameters is not an accurate chilled water flow rate requirement.

[0087] 2) In some optional implementations, the target flow rate is determined by multiplying the rated flow rate of the chilled water of the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient; the target flow rate is adjusted according to a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required flow rate of the chilled water.

[0088] The actual cooling output of the air conditioner is based on the temperature difference between the outlet water temperature and the inlet water temperature of the air conditioner coil.

[0089] As mentioned above, the required chilled water volume is affected by the target cooling demand and water temperature. Therefore, this embodiment adjusts the target flow rate (the product of the three parameters mentioned above) based on a first ratio, taking into account the influence of the coil's outlet and inlet water temperatures, to obtain a more accurate chilled water demand flow rate. A specific example is provided below for illustration:

[0090] The target cooling output of the air conditioner is A = W0 * P # Where W0 is the rated cooling capacity of the air conditioner, which in practical applications can be the rated total cooling capacity of the air conditioner (denoted as W). Q0 ) or rated sensible cooling capacity (denoted as W) X0 ); P # To meet the aforementioned target cooling requirements;

[0091] The actual cooling output of the air conditioner is A′=4.186*Q J *(T W2 -T W1 ); where Q J For the target traffic mentioned above; T W1 T represents the inlet water temperature of the coil. W2 4.186 is the outlet water temperature of the coil; 4.186 is the specific heat capacity of water.

[0092] The first ratio η1 = A / A′; where A is the target cooling output of the air conditioner; and A′ is the actual cooling output of the air conditioner.

[0093] Chilled water demand flow rate Q J # =η1*Q J .

[0094] The above example is only one specific implementation of determining the required flow rate of chilled water, and this application is not limited thereto.

[0095] By determining the target flow rate by multiplying the above three parameters, and then adjusting the target flow rate based on the first ratio, taking into account the influence of the outlet and inlet water temperatures of the coil, a more accurate chilled water demand flow rate is obtained.

[0096] The aforementioned target cooling demand characterizes the magnitude of the cooling demand. This embodiment does not specifically limit the method for obtaining the target cooling demand; an example is provided below:

[0097] 1) In some alternative implementations, the current cooling demand is directly used as the target cooling demand.

[0098] The current cooling demand is the percentage of the air conditioner's cooling output obtained based on parameters such as the air conditioner's return air temperature or supply air temperature. For example, the current cooling demand P = (actual return air temperature of the air conditioner - rated return air temperature of the air conditioner) / preset control accuracy. For example, if the actual return air temperature of the air conditioner is 24℃, the rated return air temperature of the air conditioner is 23℃, and the preset control accuracy is 2℃, the current cooling demand P = (24-23) / 2 = 50%.

[0099] The above example is only one specific way to determine the current cooling demand, and this application is not limited thereto.

[0100] 2) In some optional implementations, a second ratio of the rated cooling capacity of the air conditioner to the actual cooling capacity of the air conditioner is determined; the current cooling demand of the air conditioner is adjusted based on the second ratio to obtain the target cooling demand.

[0101] The specific implementation method for determining the current cooling demand can be referred to the above embodiments, and will not be repeated here.

[0102] As mentioned above, the rated cooling capacity of an air conditioner can be the rated total cooling capacity of the air conditioner (denoted as W). Q0 ) or rated sensible cooling capacity (denoted as W) X0 Correspondingly, the actual cooling capacity of an air conditioner can be either its actual total cooling capacity or its actual sensible cooling capacity.

[0103] The actual total cooling capacity of the air conditioner can be determined by any of the following methods:

[0104] First method: Actual total cooling capacity (W) Q1 =G*ε h *(H1-H w ); where G is the airflow rate of the air conditioner (kg / s); ε h The total cooling capacity enthalpy efficiency refers to the ratio of the actual enthalpy difference before and after the coil to the ideal maximum possible enthalpy difference when the airflow and waterflow through the coil are constant under humid cooling conditions; H1 is the enthalpy value of the air before it enters the coil (kJ / kg); H w The enthalpy (kJ / kg) of the saturated air layer on the coil surface at the same temperature as the inlet water.

[0105] The above ε h =(H1-H2) / (H1-H W H2 is the enthalpy of the air before it flows out of the coil (kJ / kg).

[0106] The second method: Actual total cooling capacity W Q2 =(T WB1 -T W1 )*W Q0 / 12.5; where T WB1 T is the wet-bulb temperature of the air before it flows into the coil (°C). W1 The inlet water temperature (°C) of the coil; W Q0 This refers to the rated total cooling capacity mentioned above.

[0107] The actual sensible cooling capacity of an air conditioner can be determined by any of the following methods:

[0108] First method: Actual sensible cooling capacity (W) X1 =G*C*ε X *(T1-T W1); where G is the airflow rate of the air conditioner (kg / s), C is the specific heat of air, C=1.006kJ / kg; ε X Sensible enthalpy efficiency refers to the ratio of the actual dry-bulb temperature difference before and after the coil to the ideal maximum possible dry-bulb temperature difference when the airflow and water flow through the coil are constant under humid cooling conditions; T1 is the dry-bulb temperature (°C) of the air before it enters the coil; T W1 The inlet water temperature (°C) of the coil;

[0109] The above ε X =(T1-T2) / (T1-T W1 ); where T2 is the dry-bulb temperature of the air before it flows out of the coil (°C).

[0110] The second method: Actual sensible cooling capacity (W) X2 =(T1-T W1 )*W X0 *(T WB1 / 19.5) (-0.7) / 20; where T1 is the dry-bulb temperature of the air before it flows into the coil (°C); T W1 T represents the inlet water temperature of the coil (°C). WB1 The wet-bulb temperature of the air before it flows into the coil (°C); W X0 This refers to the rated sensible cooling capacity mentioned above.

[0111] Correspondingly, the second ratio η2 = W Q0 / W Q1 The second ratio η2 = W Q0 / W Q2 The second ratio η2 = W X0 / W X1 Or, the second ratio η2 = W X0 / W X2 .

[0112] After determining the second ratio using any of the methods described above, the current cooling demand can be adjusted based on the second ratio to obtain the target cooling demand. For example, the target cooling demand P... # =η2*P; where η2 is the second ratio; P is the current cooling demand.

[0113] Since the actual cooling capacity of an air conditioner is usually different from its rated cooling capacity, this embodiment adjusts the current cooling demand based on the ratio of the rated cooling capacity to the actual cooling capacity to obtain a more accurate target cooling demand that represents the size of the cooling demand.

[0114] In practice, the target coil thermal output characteristic coefficient can be determined based on a first preset correspondence between cooling demand and coil thermal output characteristic coefficient. For example, if the first preset correspondence includes the target cooling demand, the coil thermal output characteristic coefficient corresponding to the target cooling demand is used as the target coil thermal output characteristic coefficient; if the first preset correspondence does not include the target cooling demand, the coil thermal output characteristic coefficient corresponding to the cooling demand closest to the target cooling demand in the first preset correspondence is used as the target coil thermal output characteristic coefficient, or the interpolation method can be used to determine the target coil thermal output characteristic coefficient.

[0115] Taking the cooling demand range of 0 to 100% in the first preset correspondence as an example, the first preset correspondence can be referred to Table 1.

[0116] Table 1

[0117]

[0118] Table 1 above is an exemplary description of the first preset correspondence, and this application is not limited thereto.

[0119] Step S202: Determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0120] For example, the target resistance value of the electric valve can be determined in the following way:

[0121] S = P D / (Q J # ) 2 Where S is the target resistance value of the electric valve, and P D Q is the water resistance of the electric valve. J # This represents the required flow rate of the chilled water mentioned above.

[0122] The above example is only one specific way to determine the target resistance value, and this application is not limited thereto.

[0123] Step S203: Adjust the electric valve based on the target opening degree corresponding to the target resistance value.

[0124] This embodiment does not specifically limit the method for determining the target opening corresponding to the target resistance value. An example is provided:

[0125] 1) The first implementation method is to determine the target opening corresponding to the target resistance value based on a second preset correspondence between the resistance value and the opening. For example: if the second preset correspondence includes the target resistance value, the opening corresponding to the target resistance value is taken as the target opening; if the second preset correspondence does not include the target resistance value, the opening corresponding to the resistance value in the second preset correspondence that is closest to the target resistance value is taken as the target opening, or the target opening is determined by interpolation.

[0126] Taking the opening value range of 0 to 100% in the second preset correspondence as an example, the second preset correspondence can be referred to Table 2.

[0127] Table 2

[0128] resistance value Opening C1 1％ C2 2％ C3 3％ C4 4％ …… …… C99 99％ C100 100％

[0129] Table 2 above is an exemplary description of the second preset correspondence, and this application is not limited thereto.

[0130] 2) The second implementation method is to use regression analysis to determine the calculation formula based on the above-mentioned second preset correspondence, and input the target resistance value into the calculation formula to obtain the target opening.

[0131] The two methods described above for determining the target opening corresponding to the target resistance value are merely illustrative examples and are not intended to limit this application.

[0132] The above solution, since the target resistance value of the electric valve is obtained based on the current target cooling demand, can adjust the electric valve to a suitable opening degree under the target cooling demand by adjusting the target opening degree corresponding to the target resistance value. This allows the electric valve to output an appropriate amount of chilled water, reducing the occurrence of situations where the target cooling demand is not met due to insufficient chilled water output, or unnecessary power consumption due to excessive chilled water output.

[0133] For scenarios where the electric valve has not been opened before the target resistance value is determined, this application provides a second air conditioning control method, which can be applied to the aforementioned computing device, such as... Figure 3 As shown, it includes the following steps:

[0134] Step S301: Determine the required chilled water flow rate of the air conditioner based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient.

[0135] Wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0136] The specific implementation of step S301 can be found in the above embodiments, and will not be repeated here.

[0137] Step S302: Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioner coil; subtract the water resistance of the coil and pipe from the pressure difference to obtain the water resistance of the electric valve.

[0138] The water resistance of the coil and pipe is obtained based on preset resistance parameters and the required flow rate of chilled water. The preset resistance parameters are the sum of the resistance parameters of the coil and the resistance parameters of the pipe in the air conditioner.

[0139] For example, the water resistance P of coils and pipes S =(S1+S2)*(Q) J # ) 2 Among them, P S S1 represents the water resistance of the coil and pipe; S2 represents the resistance parameter of the coil; Q represents the resistance parameter of the pipe. J # This refers to the required flow rate of chilled water.

[0140] The water resistance P of the electric valve D =P1-P3-P S P1 is the inlet pressure of the electric valve; P3 is the outlet pressure of the coil; P S This refers to the water resistance of coils and pipes.

[0141] This embodiment does not specifically limit the order of steps S301 and S302. That is, step S301 can be executed first, step S302 can be executed first, or steps S301 and S302 can be executed simultaneously.

[0142] Step S303: Determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0143] The specific implementation of step S303 can be found in the above embodiments, and will not be repeated here.

[0144] Step S304: Adjust the electric valve to the target opening degree corresponding to the target resistance value.

[0145] In the above scheme, if the electric valve has not been opened before the target resistance value is determined, no chilled water flows through the electric valve. Therefore, it is necessary to determine the water resistance of the electric valve based on the inlet pressure of the electric valve, the outlet pressure of the air conditioning coil, and the water resistance of the coil and pipe.

[0146] For scenarios where the electric valve has already been opened before the target resistance value is determined, this application provides a third air conditioning control method, which can be applied to the aforementioned computing device, such as... Figure 4 As shown, it includes the following steps:

[0147] Step S401: Determine the required chilled water flow rate of the air conditioner based on the rated chilled water flow rate, target cooling demand, and target coil heat output characteristic coefficient.

[0148] Wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0149] The specific implementation of step S401 can be found in the above embodiments, and will not be repeated here.

[0150] Step S402: Subtract the outlet pressure of the electric valve from the inlet pressure of the electric valve to obtain the water resistance of the electric valve.

[0151] For example, the water resistance P of the electric valve D =P1-P2; P1 is the inlet pressure of the electric valve; P2 is the outlet pressure of the electric valve.

[0152] This embodiment does not specifically limit the order of steps S401 and S402. That is, step S401 can be executed first, step S402 can be executed first, or steps S401 and S402 can be executed simultaneously.

[0153] Step S403: Determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0154] The specific implementation of step S403 can be found in the above embodiments, and will not be repeated here.

[0155] Step S404: Determine the deviation of the actual opening degree of the electric valve from the target opening degree; if the determined deviation is not within the preset deviation range, adjust the electric valve to the target opening degree.

[0156] In practice, if the actual opening degree of the electric valve deviates only slightly from the target opening degree, the electric valve will be adjusted to the target opening degree, resulting in frequent adjustments. Therefore, this embodiment does not adjust the electric valve opening degree when the actual opening degree deviates only slightly from the target opening degree (the deviation is within a preset deviation range); only when the actual opening degree deviates significantly from the target opening degree (the deviation is outside the preset deviation range) will the electric valve be adjusted to the target opening degree. This ensures an appropriate output of chilled water while avoiding frequent adjustments to the electric valve.

[0157] In the above scheme, if the electric valve has been opened before the target resistance value is determined, and chilled water is flowing through the electric valve, the water resistance of the electric valve can be obtained by subtracting the outlet pressure of the electric valve from the inlet pressure of the electric valve.

[0158] In addition, the water resistance of the electric valve should be greater than 0. Therefore, in some optional embodiments, if the water resistance of the electric valve is less than or equal to 0, the electric valve needs to be opened to the preset maximum opening degree and an alarm needs to be triggered to notify the preset personnel.

[0159] This application provides a fourth air conditioning control method, which can be applied to the aforementioned computing device, such as... Figure 5 As shown, it includes the following steps:

[0160] Step S501: Determine the required chilled water flow rate of the air conditioner based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient.

[0161] Wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0162] Step S502: Determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0163] The specific implementation of steps S501-502 can be found in the above embodiments, and will not be repeated here.

[0164] Step S503: Determine whether the target resistance value is less than the preset maximum resistance value and greater than the preset minimum resistance value.

[0165] If the target resistance value is not less than the preset maximum resistance value, it indicates that the chilled water flow rate demand is too high; if the target resistance value is not greater than the preset minimum resistance value, it indicates that the chilled water flow rate demand is too low. Therefore, this embodiment requires determining whether the target resistance value is less than the preset maximum resistance value and greater than the preset minimum resistance value before adjusting the electric valve.

[0166] If yes, proceed to step S504; otherwise, proceed to step S505.

[0167] Step S504: Adjust the electric valve based on the target opening degree corresponding to the target resistance value.

[0168] If the target resistance value is less than the preset maximum resistance value and greater than the preset minimum resistance value, it means that the determined chilled water flow rate will not be too large or too small. Therefore, the electric valve can be adjusted based on the target opening degree corresponding to the target resistance value.

[0169] Step S505: If the target resistance value is not less than the preset maximum resistance value, the electric valve is opened to the preset maximum opening degree and a high flow warning is issued; or if the target resistance value is not greater than the preset minimum resistance value, the electric valve is opened to the preset minimum opening degree and a low flow warning is issued.

[0170] If the target resistance value is not less than the preset maximum resistance value, it indicates that the chilled water demand is too high. In this case, the electric valve needs to be opened to the preset maximum opening to output a large amount of chilled water, and a high flow warning should be issued at the same time. If the target resistance value is not greater than the preset minimum resistance value, it indicates that the chilled water demand is too low. In this case, the electric valve needs to be opened to the preset minimum opening to output a small amount of chilled water, and a low flow warning should be issued at the same time.

[0171] This embodiment does not specifically limit the preset maximum resistance, preset maximum opening, preset minimum resistance, and preset minimum opening. Referring to Table 2 above, the preset maximum resistance can be C100, and the preset maximum opening can be 100%, meaning that as long as the target resistance value is ≥ C100, the electric valve will be opened to 100%; the preset minimum resistance can be C1, and the preset minimum opening can be 1%, meaning that as long as the target resistance value is ≤ C1, the electric valve will be opened to 1%.

[0172] The above-mentioned preset parameters are merely illustrative examples, and this application does not impose any specific limitations on them.

[0173] In the above scheme, if the target resistance value is less than the preset maximum resistance value and greater than the preset minimum resistance value, it indicates that the determined chilled water flow demand will not be too high or too low. The electric valve can be adjusted based on the target opening degree corresponding to this target resistance value. If the target resistance value is not less than the preset maximum resistance value, it indicates that the chilled water flow demand is too high. In this case, the electric valve needs to be opened to the preset maximum opening degree to output a large amount of chilled water, while simultaneously issuing a high flow warning. If the target resistance value is not greater than the preset minimum resistance value, it indicates that the chilled water flow demand is too low. In this case, the electric valve needs to be opened to the preset minimum opening degree to output a small amount of chilled water, while simultaneously issuing a low flow warning. Therefore, the electric valve is adjusted to an appropriate opening degree in different scenarios, and warnings are issued when chilled water demand is abnormal.

[0174] In addition, a third preset correspondence can be established between the air conditioner's operating parameters, chilled water demand flow rate, and the water resistance of the coils and pipes. Based on this third preset correspondence, the chilled water demand flow rate and the water resistance of the coils and pipes under the current operating parameters can be determined using an approximation method or an interpolation method. This third preset correspondence is shown in Table 3.

[0175] Table 3

[0176]

[0177] Table 3 above is an exemplary illustration of the third preset correspondence, and this application is not limited thereto.

[0178] Based on the same inventive concept, this application provides an air conditioning control device, see reference. Figure 6 As shown, the air conditioning control device 600 includes:

[0179] The flow rate determination module 601 is used to determine the required flow rate of chilled water for the air conditioner based on the rated flow rate of chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0180] The resistance determination module 602 is used to determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0181] The electric valve control module 603 is used to adjust the electric valve based on the target opening degree corresponding to the target resistance value.

[0182] In some alternative implementations, if the electric valve has not been opened before the target resistance value of the electric valve is determined, the resistance determination module 602 is further configured to determine the water resistance of the electric valve in the following manner:

[0183] Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil;

[0184] The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

[0185] In some alternative implementations, if the electric valve has been opened before the target resistance value of the electric valve is determined, the resistance determination module 602 is further configured to determine the water resistance of the electric valve in the following manner:

[0186] The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

[0187] In some optional implementations, the electric valve control module 603 is specifically used for:

[0188] Determine the deviation of the actual opening degree of the electric valve from the target opening degree;

[0189] If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

[0190] In some optional implementations, the flow determination module 601 is specifically used for:

[0191] The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient.

[0192] The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature of the coil and the inlet water temperature of the coil in the air conditioner.

[0193] In some optional implementations, the flow rate determination module 601 is further configured to obtain the target cooling demand in the following manner:

[0194] Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner;

[0195] The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

[0196] In some optional implementations, the electric valve control module 603 is further configured to determine, before adjusting the electric valve based on the target opening corresponding to the target resistance value, that the target resistance value is less than a preset maximum resistance value and greater than a preset minimum resistance value.

[0197] In some optional embodiments, the electric valve control module 603 is further used for:

[0198] If the target resistance value is not less than the preset maximum resistance value, then the electric valve is opened to the preset maximum opening degree, and a high flow warning is issued; or

[0199] If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

[0200] Since this device is the same as the device in the method of this application embodiment, and the principle of the device in solving the problem is similar to that of the method, the implementation of the device can be referred to the implementation of the method, and the repeated parts will not be described again.

[0201] Based on the same technical concept, this application also provides a computing device 700, such as... Figure 7 As shown, it includes at least one processor 701 and a memory 702 connected to at least one processor. In this embodiment, the specific connection medium between the processor 701 and the memory 702 is not limited. Figure 7 Taking the connection between the processor 701 and the memory 702 via bus 703 as an example, the bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0202] The processor 701 is the control center of the computing device, connecting various parts of the device via various interfaces and lines. It performs data processing by running or executing instructions stored in the memory 702 and accessing data stored in the memory 702. Optionally, the processor 701 may include one or more processing units. The processor 701 may integrate an application processor and a modem processor. The application processor primarily handles the operating system, user interface, and applications, while the modem processor primarily handles issuing instructions. It is understood that the modem processor may not be integrated into the processor 701. In some embodiments, the processor 701 and the memory 702 may be implemented on the same chip; in other embodiments, they may be implemented on separate chips.

[0203] The processor 701 can be a general-purpose processor, such as a central processing unit (CPU), digital signal processor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, capable of implementing or executing the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the air conditioning control method can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0204] Memory 702, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. Memory 702 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (RAM), static random access memory (SRAM), programmable read-only memory (PROM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic storage, magnetic disk, optical disk, etc. Memory 702 can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. In the embodiments of this application, memory 702 can also be a circuit or any other device capable of implementing storage functions for storing program instructions and / or data.

[0205] In this embodiment, the memory 702 stores a computer program, which, when executed by the processor 701, causes the processor 701 to perform the following:

[0206] The required chilled water flow rate of the air conditioner is determined based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand.

[0207] The target resistance value of the electric valve is determined based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water.

[0208] The electric valve is adjusted based on the target opening degree corresponding to the target resistance value.

[0209] In some alternative implementations, if the electric valve has not been opened before the target resistance value of the electric valve is determined, the processor 701 is further configured to determine the water resistance of the electric valve by:

[0210] Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil;

[0211] The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

[0212] In some alternative implementations, if the electric valve has been opened before the target resistance value of the electric valve is determined, the processor 701 is further configured to determine the water resistance of the electric valve by:

[0213] The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

[0214] In some alternative implementations, processor 701 is specifically used for:

[0215] Determine the deviation of the actual opening degree of the electric valve from the target opening degree;

[0216] If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

[0217] In some alternative implementations, processor 701 is specifically used for:

[0218] The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient.

[0219] The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature of the coil and the inlet water temperature of the coil in the air conditioner.

[0220] In some alternative implementations, the processor 701 is also configured to obtain the target cooling requirement by:

[0221] Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner;

[0222] The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

[0223] In some optional implementations, the processor 701 is further configured to determine, before adjusting the electric valve based on the target opening corresponding to the target resistance value, that the target resistance value is less than a preset maximum resistance value and greater than a preset minimum resistance value.

[0224] In some alternative implementations, the processor 701 is also used for:

[0225] If the target resistance value is not less than the preset maximum resistance value, then the electric valve is opened to the preset maximum opening degree, and a high flow warning is issued; or

[0226] If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

[0227] Since the computing device is the same computing device in the method of this application embodiment, and the principle of the computing device in solving the problem is similar to that of the method, the implementation of the computing device can refer to the implementation of the method, and the repeated parts will not be described again.

[0228] Based on the same technical concept, embodiments of this application also provide a computer-readable storage medium storing a computer program executable by a computing device, which, when run on the computing device, causes the computing device to perform the steps of the above-described air conditioning control method.

[0229] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0230] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0231] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0232] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0233] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0234] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An air conditioning control device, characterized in that, The device includes: The flow rate determination module is used to determine the required flow rate of chilled water for the air conditioner based on the rated flow rate of chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand; the target coil heat output characteristic coefficient is determined based on the target cooling demand and a first preset correspondence; the first preset correspondence includes the correspondence between cooling demand and coil heat output characteristic coefficient; The resistance determination module is used to determine the target resistance value of the electric valve based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water. The electric valve control module is used to adjust the electric valve based on the target opening degree corresponding to the target resistance value; The flow determination module is specifically used for: The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient. The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature and the inlet water temperature of the coil in the air conditioner. The flow rate determination module is also used to obtain the target cooling demand in the following ways: Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner; The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

2. The apparatus as claimed in claim 1, characterized in that, If the electric valve has not been opened before the target resistance value of the electric valve is determined, the resistance determination module is also used to determine the water resistance of the electric valve in the following ways: Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil; The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

3. The apparatus as described in claim 1, characterized in that, If the electric valve has been opened before the target resistance value of the electric valve is determined, the resistance determination module is also used to determine the water resistance of the electric valve in the following manner: The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

4. The apparatus as described in claim 3, characterized in that, The electric valve control module is specifically used for: Determine the deviation of the actual opening degree of the electric valve from the target opening degree; If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

5. The apparatus as claimed in claim 1, characterized in that, The electric valve control module is further configured to determine, before adjusting the electric valve based on the target opening corresponding to the target resistance value, that the target resistance value is less than a preset maximum resistance value and greater than a preset minimum resistance value.

6. The apparatus as claimed in claim 5, characterized in that, The electric valve control module is also used for: If the target resistance value is not less than the preset maximum resistance value, the electric valve will be opened to the preset maximum opening degree, and a high flow warning will be issued. or If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

7. An air conditioning control method, characterized in that, The method includes: The required chilled water flow rate of the air conditioner is determined based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient; wherein, the target coil heat output characteristic coefficient is the coil heat output characteristic coefficient corresponding to the target cooling demand; the target coil heat output characteristic coefficient is determined based on the target cooling demand and a first preset correspondence; the first preset correspondence includes the correspondence between cooling demand and coil heat output characteristic coefficient; The target resistance value of the electric valve is determined based on the water resistance of the electric valve in the air conditioner and the required flow rate of the chilled water. Adjust the electric valve based on the target opening degree corresponding to the target resistance value; The required chilled water flow rate of the air conditioner is determined based on the rated flow rate of the chilled water, the target cooling demand, and the target coil heat output characteristic coefficient, including: The target flow rate is determined by multiplying the rated flow rate of chilled water in the air conditioner, the target cooling demand, and the target coil heat output characteristic coefficient. The target flow rate is adjusted based on a first ratio of the target cooling output of the air conditioner to the actual cooling output of the air conditioner to obtain the required chilled water flow rate; wherein, the actual cooling output of the air conditioner is obtained based on the temperature difference between the outlet water temperature and the inlet water temperature of the coil in the air conditioner. The target cooling requirement is obtained through the following method: Determine a second ratio between the rated cooling capacity of the air conditioner and the actual cooling capacity of the air conditioner; The target cooling demand is obtained by adjusting the current cooling demand of the air conditioner based on the second ratio.

8. The method as described in claim 7, characterized in that, If the electric valve has not been opened before the target resistance value of the electric valve is determined, the water resistance of the electric valve is determined in the following manner: Determine the pressure difference between the inlet pressure of the electric valve and the outlet pressure of the air conditioning coil; The water resistance of the electric valve is obtained by subtracting the water resistance of the coil and pipe from the pressure difference. The water resistance of the coil and pipe is obtained based on a preset resistance parameter and the required flow rate of the chilled water. The preset resistance parameter is the sum of the resistance parameter of the coil and the resistance parameter of the pipe in the air conditioner.

9. The method as described in claim 7, characterized in that, If the electric valve has been opened before the target resistance value of the electric valve is determined, the water resistance of the electric valve is determined as follows: The water resistance of the electric valve is obtained by subtracting its outlet pressure from its inlet pressure.

10. The method as described in claim 9, characterized in that, Adjusting the electric valve based on the target opening degree corresponding to the target resistance value includes: Determine the deviation of the actual opening degree of the electric valve from the target opening degree; If the determined deviation is not within the preset deviation range, the electric valve is adjusted to the target opening degree.

11. The method as described in claim 7, characterized in that, Before adjusting the electric valve based on the target opening degree corresponding to the target resistance value, the method further includes: The target resistance value is determined to be less than the preset maximum resistance value and greater than the preset minimum resistance value.

12. The method as described in claim 11, characterized in that, The method further includes: If the target resistance value is not less than the preset maximum resistance value, then the electric valve is opened to the preset maximum opening degree, and a high flow warning is issued; or If the target resistance value is not greater than the preset minimum resistance value, the electric valve will be opened to the preset minimum opening degree, and a low flow warning will be issued.

13. A computing device, characterized in that, It includes at least one processor and at least one memory, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the method of any one of claims 7 to 12.

14. A computer-readable storage medium, characterized in that, It stores a computer program executable by a computing device, which, when run on the computing device, causes the computing device to perform the method of any one of claims 7 to 12.

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