Control method, electronic device and storage medium of fresh air unit

Abstract

The present application relates to the field of HVAC technology, and in particular to a control method, electronic device and storage medium for a fresh air unit, which is used to solve the problem that the control method of the fresh air unit cannot achieve precise control, resulting in a large amount of resource waste. First, collect and analyze the relevant data of the fresh air unit to determine the current operation mode of the fresh air unit. Secondly, according to the functional segment combinations corresponding to different operation modes, determine the target functional segment combination corresponding to the current operation mode. Then, according to the air parameter adjustment range corresponding to each target functional segment in the target functional segment combination, determine the air parameter target value corresponding to the overall energy loss of the target functional segment combination. According to the conservation of heat exchange energy, determine the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each functional segment. Finally, control the heat exchange fluid of the corresponding functional segment to perform heat exchange according to the control parameters corresponding to each functional segment. Accurate control of each kinetic energy segment is achieved.

Description

Background Art

[0002] At present, the fresh air unit is a kind of fresh air treatment equipment widely used in the field of HVAC. Since the fresh air unit operates under the meteorological conditions throughout the year, the variability of the climate throughout the year determines the diversity of the treatment modes of the fresh air treatment unit, and also determines the complexity and diversity of the treatment function segment. The dual-cold source fresh air unit is a fresh air unit proposed to adapt to the independent control of heat and humidity. The dual-cold source fresh air unit mainly bears the fresh air and indoor humidity load, and can also bear part of the sensible heat load according to the actual situation. This fresh air unit is widely used in civil and industrial buildings.

[0003] In the related technology, the control method of the fresh air unit generally sets the control target value according to the parameters at the outlet of the fresh air unit, and divides the outdoor meteorological parameters into several areas according to the set temperature, humidity or enthalpy value to operate in summer, transition season, winter and other working modes. The operation strategy generally adopts the established PID control program or other logic. The current control mode of the dual-cold source fresh air unit does not accurately control the parameters of each intermediate section of the fresh air unit, but only gives a fixed value or only pays attention to the outlet parameter value, and pays less attention to the energy-saving characteristics of the entire system, resulting in a waste of a lot of resources. Summary of the invention

[0004] The present application provides a control method for a fresh air unit, an electronic device and a storage medium, to at least solve the problem that the control method for a fresh air unit in the related art cannot achieve precise control, resulting in a large amount of resource waste. The technical solution of the present application is as follows:

[0005] According to a first aspect of an embodiment of the present application, a control method for a fresh air unit is provided, the method comprising:

[0006] Collect and analyze relevant data of the fresh air unit to determine the current operation mode of the fresh air unit;

[0007] According to the functional segment combinations corresponding to different operating modes, determine the target functional segment combination corresponding to the current operating mode;

[0008] According to the air parameter adjustment range corresponding to each target function segment in the target function segment combination, determine the air parameter target value corresponding to the requirement so that the overall energy loss of the target function segment combination reaches the requirement;

[0009] Determine the control parameters of the heat exchange fluid corresponding to the target values ​​of the air parameters corresponding to each functional section according to the conservation of heat exchange energy;

[0010] According to the control parameters corresponding to each functional section, the heat exchange fluid of the corresponding functional section is controlled to perform heat exchange.

[0011] In a possible implementation manner, the collecting and analyzing relevant data of the fresh air unit to determine the current operation mode of the fresh air unit includes:

[0012] According to the collected data of the fresh air unit, determine the air supply dew point temperature Tdp0, the maximum temperature Tdb1 that the air can reach after the first-level surface cooling, and the wet bulb temperature Twb0 corresponding to the air supply dew point temperature;

[0013] When the outdoor temperature Tdbw is greater than Tdb1 and Tdpw is greater than Tdp0, the operation mode of the fresh air unit is determined to be the first cooling and dehumidification operation mode;

[0014] When Tdbw is greater than Tdb1 and Tdpw is less than Tdp0, it is determined that the operation mode of the fresh air unit is a cooling and precise humidification mode;

[0015] When Tdbw is less than Tdb1 and Tdpw is greater than the supply air dew point temperature Tdp0, it is determined that the operation mode of the fresh air unit is to start the second cooling and dehumidification mode;

[0016] When Tdbw is less than Tdb1 and Tdpw is less than Tdp0, and Twbw is greater than Twb0, it is determined that the operation mode of the fresh air unit is the cooling and humidification mode;

[0017] When Tdbw is less than Tdb1, Tdpw is less than Tdp0, and Twbw is less than Twb0, it is determined that the operation mode of the fresh air unit is the heating and humidification mode.

[0018] In a possible implementation, determining a target functional segment combination corresponding to the current operating mode according to functional segment combinations corresponding to different operating modes includes:

[0019] If the operation mode of the fresh air unit is the first cooling and dehumidification mode, determining that the target functional segment combination includes a first-level medium-temperature water meter cooling and a second-level low-temperature water meter cooling;

[0020] If the operation mode of the fresh air unit is cooling and precise humidification mode, determining the target functional segment combination includes first-level medium-temperature water surface cooling, second-level low-temperature water surface cooling and spraying;

[0021] If the operation mode of the fresh air unit is the second cooling and dehumidification mode, determining that the target functional segment combination includes secondary low-temperature water meter cooling;

[0022] If the operation mode of the fresh air unit is a cooling and humidification mode, determining that the target functional segment combination includes secondary low-temperature water meter cooling and spraying;

[0023] If the operation mode of the fresh air unit is a heating and humidification mode, it is determined that the target functional segment combination includes heating and spraying.

[0024] In a possible implementation manner, the overall energy loss of the target functional segment combination is determined in the following manner:

[0025]

[0026] Where E represents the overall energy loss of the target functional segment combination, E i represents the energy loss of the ith functional segment, E i1 represents the cooling and heating energy loss of the i-th functional segment, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, t i represents the temperature of the heat exchange fluid corresponding to the i-th functional section, f(t i ) represents the unit flow rate of heat transfer fluid at temperature t i The energy loss function converted by energy grade is as follows: Gi (G i ) indicates that in G i Transmission energy loss function under flow, n represents the number of functional segments.

[0027] In a possible implementation manner, the air parameter adjustment range corresponding to each target functional segment includes the air temperature adjustment range corresponding to each target functional segment, and the air temperature adjustment range corresponding to each target functional segment is determined in the following manner:

[0028] t i -Δt1 <t dbi <t i +Δt2+Δt3

[0029] Among them, t dbi represents the air temperature target value of the i-th target function segment, t i represents the temperature of the heat exchange fluid corresponding to the i-th target functional section, Δt1 represents the inlet end difference of the air, Δt2 represents the outlet end difference of the air, and Δt3 represents the outlet temperature rise of the heat exchange fluid corresponding to the i-th target functional section.

[0030] In a possible implementation, according to the air parameter adjustment range corresponding to each functional segment in the target functional segment combination, determining the air parameter target value corresponding to the requirement so that the overall energy loss of the target functional segment combination reaches the requirement includes:

[0031] Generating initial target air parameter adjustment values ​​corresponding to each functional segment in the target functional segment combination and within the air parameter adjustment range by a random method;

[0032] The initial target air parameter adjustment value is used as the initial population, and according to the objective function maxf=1 / E, a genetic algorithm is used to iteratively optimize the air parameter adjustment range corresponding to each target functional segment until the termination condition is satisfied, wherein E represents the overall energy loss of the target functional segment combination;

[0033] At the end of the iteration, the target value of the air parameter corresponding to the requirement is obtained so that the overall energy loss of the target functional segment combination reaches the requirement.

[0034] In a possible implementation, after each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following manner:

[0035] If the target functional section includes heating / surface cooling, the air flow rate, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the corresponding functional section are determined according to the adjusted air parameters;

[0036] Determine the air side energy consumption of the functional section according to the air flow rate, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the functional section;

[0037] Determine the heat and cold energy loss of the functional section according to the energy grade conversion value of the heat exchange fluid corresponding to the functional section and the air side energy consumption; and

[0038] Determining the flow rate and temperature of the corresponding heat exchange fluid according to the determined cold and hot energy loss of the functional section, and determining the transmission energy consumption corresponding to the flow rate of the heat exchange fluid;

[0039] The energy loss of the functional segment is determined according to the cold and hot energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the objective function is obtained according to the overall energy loss.

[0040] In a possible implementation, after each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following manner:

[0041] If the target functional section includes spraying, determine the air flow, inlet and outlet air enthalpy, inlet and outlet dry bulb temperature, inlet and outlet wet bulb temperature and inlet and outlet spray water temperature corresponding to the corresponding functional section according to the adjusted air parameters;

[0042] Determine the air side energy consumption of the functional section according to the air flow rate corresponding to the functional section and the air enthalpy value of the inlet and outlet;

[0043] Determine the heat exchange efficiency according to the inlet air enthalpy, inlet and outlet dry bulb temperature, inlet and outlet wet bulb temperature and inlet and outlet spray water temperature corresponding to the functional section;

[0044] Determine the cooling and heating energy loss of the functional section according to the air side energy consumption and heat exchange efficiency and the energy grade conversion value of the heat exchange fluid corresponding to the functional section;

[0045] Determining the flow rate and temperature of the corresponding heat exchange fluid according to the determined cold and hot energy loss of the functional section, and determining the transmission energy consumption corresponding to the flow rate of the heat exchange fluid;

[0046] The energy loss of the functional segment is determined according to the cold and hot energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the objective function is obtained according to the overall energy loss.

[0047] According to a second aspect of an embodiment of the present application, there is provided an electronic device, including:

[0048] Display, processor and memory;

[0049] The display is used to display information;

[0050] The memory is used to store the processor executable instructions;

[0051] Wherein, the processor is configured to execute the instructions to implement the control method of the fresh air unit described in any one of the first aspects of the embodiments of the present application.

[0052] According to the third aspect of an embodiment of the present application, an embodiment of the present application also provides a computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute a control method for a fresh air group as described in any one of the first aspect of the embodiment of the present application.

[0053] According to a fourth aspect of an embodiment of the present application, a computer program product is provided. When the computer program product is run on an electronic device, the electronic device executes the control method for the fresh air unit described in any one of the first aspects of the embodiment of the present application.

[0054] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: first, the relevant data of the fresh air unit is collected and analyzed to determine the current operating mode of the fresh air unit; secondly, according to the functional segment combinations corresponding to different operating modes, the target functional segment combination corresponding to the current operating mode is determined; then, according to the air parameter adjustment range corresponding to each target functional segment in the target functional segment combination, the air parameter target value corresponding to the requirement is determined so that the overall energy loss of the target functional segment combination can reach the required value; and according to the law of conservation of heat exchange energy, the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each functional segment are determined; finally, the heat exchange fluid of the corresponding functional segment is controlled to perform heat exchange according to the control parameters corresponding to each functional segment. Therefore, the method provided in the present application collects and analyzes the relevant data of the fresh air unit to determine the current operation mode of the fresh air unit, and determines the target function segment combination corresponding to the current operation mode according to the function segment combination corresponding to different operation modes, which fully considers the variability and complexity of the air treatment process, and determines different analysis results through the relevant data of different fresh air units, so as to accurately determine the different target function segments corresponding to the operation mode, and realizes accurate analysis of the fresh air unit; by adjusting the air parameter adjustment range corresponding to each target function segment in the target function segment combination, it is determined that the overall energy loss of the target function segment combination reaches the required corresponding air parameter target value, so as to realize accurate control of the parameters of each intermediate function segment of the fresh air unit; finally, according to the conservation of heat exchange energy, the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each function segment are determined, and the heat exchange of the corresponding function segment is controlled according to the control parameters corresponding to each function segment, so as to realize effective control parameters in each function segment, realize energy-saving control of the entire fresh air unit, effectively overcome the problem that the existing fresh air unit control system cannot accurately control each function segment, and meet the energy-saving requirements of the fresh air unit, and improve the working efficiency and energy-saving efficiency of the fresh air unit.

[0055] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0057] Figure 1 is a flow chart of a control method of a fresh air unit according to an exemplary embodiment;

[0058] Figure 2 is a zoning schematic diagram of an operation mode of a fresh air unit according to an exemplary embodiment;

[0059] Figure 3is a schematic diagram of the architecture of a control system of a fresh air unit according to an exemplary embodiment;

[0060] Figure 4 is a schematic diagram showing the architecture and data transmission of each functional section of a fresh air unit according to an exemplary embodiment;

[0061] Figure 5 is a flowchart of step 103 according to an exemplary embodiment;

[0062] Figure 6 is a schematic diagram of a process of determining an objective function according to an exemplary embodiment;

[0063] Figure 7 is another schematic diagram of a flow chart of determining an objective function according to an exemplary embodiment;

[0064] Figure 8 The diagram is a schematic diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0065] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0066] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0067] The application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It is known to those skilled in the art that with the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems. In the description of the present application, unless otherwise specified, the meaning of "multiple" is the same.

[0068] The control method of the fresh air unit provided in the present application will be introduced below in conjunction with embodiments.

[0069] The inventive concept of the present application can be summarized as follows: first, collect and analyze relevant data of the fresh air unit to determine the current operating mode of the fresh air unit; second, determine the target functional segment combination corresponding to the current operating mode according to the functional segment combinations corresponding to different operating modes; then, determine the air parameter target value corresponding to the requirement based on the air parameter adjustment range corresponding to each target functional segment in the target functional segment combination; and determine the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each functional segment according to the law of conservation of heat exchange energy; finally, control the heat exchange fluid of the corresponding functional segment for heat exchange according to the control parameters corresponding to each functional segment. Therefore, the method provided in the present application collects and analyzes the relevant data of the fresh air unit to determine the current operation mode of the fresh air unit, and determines the target function segment combination corresponding to the current operation mode according to the function segment combination corresponding to different operation modes, which fully considers the variability and complexity of the air treatment process, and determines different analysis results through the relevant data of different fresh air units, so as to accurately determine the different target function segments corresponding to the operation mode, and realizes accurate analysis of the fresh air unit; by adjusting the air parameter adjustment range corresponding to each target function segment in the target function segment combination, it is determined that the overall energy loss of the target function segment combination reaches the required corresponding air parameter target value, so as to realize accurate control of the parameters of each intermediate function segment of the fresh air unit; finally, according to the conservation of heat exchange energy, the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each function segment are determined, and the heat exchange of the corresponding function segment is controlled according to the control parameters corresponding to each function segment, so as to realize effective control parameters in each function segment, realize energy-saving control of the entire fresh air unit, effectively overcome the problem that the existing fresh air unit control system cannot accurately control each function segment, and meet the energy-saving requirements of the fresh air unit, and improve the working efficiency and energy-saving efficiency of the fresh air unit.

[0070] Based on the above description, in order to more accurately control the fresh air unit, the control method of the fresh air unit in the related art cannot achieve accurate control and cause a lot of resources to be wasted. The embodiment of the present application provides a control method for the fresh air unit, and its overall flow chart is as follows: Figure 1 As shown, including the following:

[0071] In step 101, relevant data of the fresh air unit is collected and analyzed to determine the current operation mode of the fresh air unit.

[0072] In a possible implementation, in step 101, collecting and analyzing relevant data of the fresh air unit to determine the current operation mode of the fresh air unit includes the following contents:

[0073] According to the principle of independent treatment of heat and humidity, based on the collected data of the fresh air unit, the supply air dew point temperature Tdp0, the maximum temperature Tdb1 that the air can reach after the first-level surface cooling and the wet bulb temperature Twb0 corresponding to the supply air dew point temperature are determined through calculation. The operation modes of the fresh air unit include the following five:

[0074] 1. When the outdoor temperature Tdbw is greater than Tdb1 and Tdpw is greater than Tdp0, the operation mode of the fresh air unit is determined to be the first cooling and dehumidification operation mode.

[0075] 2. When Tdbw is greater than Tdb1 and Tdpw is less than Tdp0, the operation mode of the fresh air unit is determined to be cooling and precise humidification mode.

[0076] 3. When Tdbw is less than Tdb1 and Tdpw is greater than the supply air dew point temperature Tdp0, the operation mode of the fresh air unit is determined to be the second cooling and dehumidification mode.

[0077] 4. When Tdbw is less than Tdb1 and Tdpw is less than Tdp0, and Twbw is greater than Twb0, the operation mode of the fresh air unit is determined to be cooling and humidification mode.

[0078] 5. When Tdbw is less than Tdb1 and Tdpw is less than Tdp0, and Twbw is less than Twb0, the operation mode of the fresh air unit is determined to be the heating and humidification mode.

[0079] like Figure 2 As shown, the embodiment of the present application divides the enthalpy-humidity diagram of the fresh air unit into 5 areas according to the iso-dry-bulb temperature line, iso-humidity content line and iso-wet-bulb temperature line corresponding to the dew point temperature of the fresh air unit machine at the indoor parameter point N. In Area I, two cold sources (medium temperature and low temperature) are turned on to enter the first cooling and dehumidification mode; in Area II, spraying and medium-temperature cold source are turned on to enter the cooling and precise humidification mode; in Area III, the low-temperature cold source is turned on to enter the second cooling and humidification mode; in Area IV, the medium-temperature cold source is turned on and spraying is turned on to perform cooling and humidification mode; in Area V, the heating and humidification mode is entered. In this heating and humidification mode, the combination of heating and humidification can be selected in three modes by adjusting the spray water temperature. The first is to heat the outside air to a certain set value through the heating coil, and then adjust the spray water temperature to make the air reach the dew point temperature; the second is to heat the outside air to the isenthalpy line corresponding to the dew point temperature through the heating coil, and then spray circulating water to make the air reach the dew point temperature; the third is to fix the spray water temperature to a certain value, and then adjust the heating amount of the heating coil to treat the air to the dew point temperature.

[0080] It should be noted that the schematic diagram of the control system of the fresh air unit is as follows: Figure 3The embodiment of the present application measures and senses some relevant parameters of the fresh air unit through sensors, such as air flow, air temperature through each level of processing (i.e., each functional segment), heat exchanger inlet and outlet temperature, flow, etc., and connects the signal including these relevant parameters to the input and output module of the PLC (Programmable Logic Controller); then, the DDC (Direct Digital Control, direct digital controller) collects other related parameters, such as frequency converter, electric meter and other parameters, and integrates the data of PLC and DDC into the upper integration platform through the communication protocol, avoiding the emergence of information barriers; then the upper integration platform and the data analysis platform transmit data through a certain communication protocol, in the data analysis module, the collected relevant data of the fresh air unit are analyzed to determine the operation mode of the fresh air unit, and then the subsequent steps 102 to 105 are performed, that is, through the energy consumption analysis of different target functional segment combinations corresponding to the operation mode, the control parameters of the heat exchange fluid corresponding to the corresponding air parameter target value of each target functional segment are given, and the control parameters are transmitted to PLC and DDC through the protocol, and PLC and DDC control the heat exchange of the fresh air unit through the operation control strategy to achieve precise control of the outlet parameters of each target functional segment.

[0081] In step 102, a target functional segment combination corresponding to the current operating mode is determined according to functional segment combinations corresponding to different operating modes.

[0082] In a possible implementation, in step 102, according to the functional segment combinations corresponding to different operating modes, the target functional segment combination corresponding to the current operating mode is determined, that is, according to the five operating modes of the above-mentioned fresh air unit, the target functional segment combinations corresponding to the five operating modes are determined, including the following five target functional segment combinations:

[0083] 1. If the operation mode of the fresh air unit is the first cooling and dehumidification mode, determine that the target functional section combination includes the first-level medium-temperature water meter cooling and the second-level low-temperature water meter cooling.

[0084] 2. If the operation mode of the fresh air unit is cooling and precise humidification mode, determine that the target functional segment combination includes primary medium-temperature water surface cooling, secondary low-temperature water surface cooling and spraying.

[0085] 3. If the operation mode of the fresh air unit is the second cooling and dehumidification mode, determine that the target functional section combination includes secondary low-temperature water meter cooling.

[0086] 4. If the operation mode of the fresh air unit is cooling and humidification mode, determine that the target functional section combination includes secondary low-temperature water meter cooling and spraying.

[0087] 5. If the operation mode of the fresh air unit is heating and humidification mode, determine that the target functional section combination includes heating and spraying.

[0088] It should be noted that the architecture of each functional section of the fresh air unit and the schematic diagram of data transmission are as follows Figure 4 As shown, the functional sections of the fresh air unit include heating, surface cooling, spraying, surface cooling, reheating and heat exchange. Among them, from top to bottom, the surface cooling of the second functional section corresponds to the first-level medium-temperature water surface cooling, and the surface cooling of the fourth functional section corresponds to the second-level low-temperature water surface cooling. It can be seen that the target functional section combination corresponding to the first cooling and dehumidification mode mainly includes Figure 4 The target functional segment combinations corresponding to the two cooling, cooling and precise humidification modes mainly include Figure 4 The two tables are cooling, spraying and heat exchange, and so on. The embodiment of the present application determines the target functional segment combination corresponding to the current operating mode according to the functional segment combination corresponding to different operating modes.

[0089] In step 103, according to the air parameter adjustment range corresponding to each target function segment in the target function segment combination, it is determined that the overall energy loss of the target function segment combination reaches the corresponding air parameter target value.

[0090] In a possible implementation, the overall energy loss of the target functional segment combination is determined in the following manner (1):

[0091]

[0092] Where E represents the overall energy loss of the target functional segment combination, E i represents the energy loss of the ith functional segment, E i1 represents the cooling and heating energy loss of the i-th functional segment, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, t i represents the temperature of the heat exchange fluid corresponding to the i-th functional section, f(t i ) represents the unit flow rate of heat transfer fluid at temperature t i The energy loss function converted by energy grade is as follows: Gi (G i ) indicates that in G i Transmission energy loss function under flow.

[0093] For example, if the operation mode of the fresh air unit is determined to be the first cooling and dehumidification mode, the target functional segment combination is determined to include a first-level medium-temperature water meter cooling and a second-level low-temperature water meter cooling, such as Figure 4As shown, the first-level medium-temperature water meter cooling and the second-level low-temperature water meter cooling correspond to the second functional segment and the fifth functional segment respectively. The embodiment of the present application determines the overall energy loss of the target functional segment combination through the above formula (1), including the energy loss of the second functional segment and the energy loss of the fifth functional segment, and calculates the overall energy loss of the target functional segment combination based on the relevant data of the fresh air unit collected in step 101.

[0094] It should be added that Figure 4 In the figure, Gxf represents the flow rate of fresh air of the fresh air unit, Tdbw represents the outdoor temperature, d0 represents the humidity of the air before entering the fresh air unit, E1 represents the energy loss of the heating function section, T1 represents the temperature of the water in the heating function section, Q1 represents the air side energy consumption of the heating function section, Tdb1 represents the air temperature target value of the first target function section, and so on, d2 represents the humidity of the air after the surface cooling treatment, E2 represents the energy loss of the surface cooling function section, T2 represents the temperature of the water in the heating function section, Q2 represents the air side energy consumption of the heating function section, and Tdb2 represents the air temperature target value of the second target function section. Therefore, the embodiment of the present application provides Figure 4 The meaning of all parameter symbols in .

[0095] In another possible implementation, the air parameter adjustment range corresponding to each target functional segment includes an air temperature adjustment range corresponding to each target functional segment, and the air temperature adjustment range corresponding to each target functional segment is determined using the following formula (2):

[0096] t i -Δt1 <t dbi <t i +Δt2+Δt3 (2)

[0097] Among them, t dbi represents the air temperature target value of the i-th target function segment, t i represents the temperature of the heat exchange fluid corresponding to the i-th target functional section, Δt1 represents the inlet end difference of the air, Δt2 represents the outlet end difference of the air, and Δt3 represents the outlet temperature rise of the heat exchange fluid corresponding to the i-th target functional section.

[0098] For example, if the operation mode of the fresh air unit is determined to be the first cooling and dehumidification mode, the target functional segment combination is determined to include a first-level medium-temperature water meter cooling and a second-level low-temperature water meter cooling, such as Figure 4 As shown, the first-level medium-temperature water meter cooling and the second-level low-temperature water meter cooling correspond to the second functional segment and the fifth functional segment respectively. According to the above formula (2), the embodiment of the present application obtains the air temperature adjustment range corresponding to the second functional segment and the air temperature adjustment range corresponding to the fifth functional segment.

[0099] In a possible implementation, after determining the overall energy loss of the target functional segment combination and the air temperature adjustment range corresponding to each target functional segment, in order to achieve the minimum energy consumption of the fresh air unit, the embodiment of the present application determines the air parameter target value corresponding to the requirement based on the air parameter adjustment range corresponding to each functional segment in the target functional segment combination. The flow chart is as follows: Figure 5 As shown, including the following:

[0100] In step 501, a random method is used to generate initial target air parameter adjustment values ​​corresponding to each functional segment in the target functional segment combination and within the air parameter adjustment range;

[0101] In step 502, the initial target air parameter adjustment value is used as the initial population, and according to the objective function maxf=1 / E, a genetic algorithm is used to iteratively optimize the air parameter adjustment range corresponding to each target functional segment until the termination condition is satisfied, where E represents the overall energy loss of the target functional segment combination. The termination condition is to make the overall energy loss of the target functional segment combination.

[0102] In step 503, at the end of the iteration, the target value of the air parameter corresponding to the requirement is obtained so that the overall energy loss of the target functional segment combination reaches the requirement.

[0103] In a possible implementation, after each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following manner, as shown in the flowchart. Figure 6 As shown, including the following:

[0104] In step 601, if the target functional section includes heating / cooling, the air flow, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the corresponding functional section are determined according to the adjusted air parameters.

[0105] If the target functional section includes heating / surface cooling, the following first energy consumption determination formula (3) is used to determine the air flow rate, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the corresponding functional section.

[0106] It should be noted that there is a specific corresponding relationship between the air parameters and the air flow rate, inlet and outlet air enthalpy, dry-bulb temperature and air humidity content corresponding to the corresponding functional segment. Therefore, the embodiment of the present application can determine the air flow rate, inlet and outlet air enthalpy, dry-bulb temperature and air humidity content corresponding to the corresponding functional segment based on the adjusted air parameters.

[0107] Then, in step 602, the air side energy consumption of the functional section is determined according to the air flow rate corresponding to the functional section, the air enthalpy value of the inlet and outlet, the dry bulb temperature and the air humidity content.

[0108] If the target functional section includes heating / cooling, the following first energy consumption determination formula (3) is used to determine the air side energy consumption of the functional section:

[0109] Q bli =G xf (i out,bli -i in,bli )=1.01G xf (t out,bli -t in,bli )+2500G xf (d out,bli -d in,bli )+1.84G xf (t out,bli d out,bli -t in,bli d in,bli ) (3)

[0110] Among them, Q bli represents the energy loss of the ith surface cooling / heating unit, i out,bli represents the enthalpy of air leaving the i-th surface cooler / heater, i in,bli represents the enthalpy of air entering the i-th surface cooler / heater, G xf represents the air volume function of the fresh air unit, t out,bli represents the dry bulb temperature leaving the ith surface cooler / heater, t in,bli represents the dry bulb temperature entering the ith surface cooler / heater, d out,bli represents the humidity of the air leaving the ith surface cooler / heater, d in,bli Represents the humidity content of the air entering the i-th surface cooler / heater.

[0111] It should be supplemented that, if the functional section includes multiple surface coolers / heaters, the energy losses of all surface coolers / heaters included in the functional section are added together to obtain the air-side energy consumption of the functional section.

[0112] In step 603, the cooling and heating energy losses of the functional sections are determined according to the energy grade conversion value of the heat exchange fluid corresponding to the functional sections and the air-side energy consumption.

[0113] The following formula (4) is used to determine the cooling and heating energy loss of the functional section:

[0114] E i1 =k i Q i (4)

[0115] Among them, E i1 represents the cooling and heating energy loss of the i-th functional segment, k i Indicates the energy grade conversion value of the heat exchange fluid corresponding to the functional section, Q i Indicates the air side energy consumption of the functional section.

[0116] In step 604, the flow rate and temperature of the corresponding heat exchange fluid are determined according to the determined cold and hot energy loss of the functional segment, and the transmission energy consumption corresponding to the determined flow rate of the heat exchange fluid is determined.

[0117] The transmission energy loss of the functional segment is determined using the following formula (5):

[0118]

[0119] Among them, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, Indicates that in G i Transmission energy loss function under flow.

[0120] In step 605, the energy loss of the functional segment is determined according to the cooling and heating energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the target function is obtained according to the overall energy loss.

[0121] The objective function is obtained according to the overall energy loss of the target functional segment combination, and the objective function is as follows (6):

[0122]

[0123] The number of functional segments is 6, E represents the overall energy loss of the target functional segment combination, and E i represents the energy loss of the ith functional segment, E i1 represents the cooling and heating energy loss of the i-th functional segment, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, k i Indicates the energy grade conversion value of the heat exchange fluid corresponding to the functional section, Q i Indicates the air side energy consumption of the functional section, Indicates that in G i Transmission energy loss function under flow.

[0124] In another possible implementation, after each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following manner, as shown in the flowchart. Figure 7 As shown, including the following:

[0125] In step 701, if the target functional section includes spraying, the air flow, inlet and outlet air enthalpy, inlet and outlet dry bulb temperature, inlet and outlet wet bulb temperature and inlet and outlet spray water temperature corresponding to the corresponding functional section are determined according to the adjusted air parameters.

[0126] In step 702, the air-side energy consumption of the functional section is determined according to the air flow rate corresponding to the functional section and the air enthalpy value of the inlet and outlet.

[0127] If the target functional section includes spraying, the following second energy consumption determination formula (7) is used to determine the air side energy consumption of the functional section:

[0128] Q pli =G xf (i out,pl -i in,pl )=WC(t plw,out -t plw,in ) (7)

[0129] Among them, Q pli represents the energy loss of the i-th spray room, i out,bli represents the enthalpy of air leaving the i-th spray room, i in,bli represents the enthalpy of air entering the i-th spray room, G xf represents the air volume function of the fresh air unit, W represents the spray water volume, C represents the specific heat capacity of water, t plw,out represents the outlet temperature of the spray water leaving the i-th spray room, t plw,in Represents the inlet temperature of the spray water entering the i-th spray room.

[0130] It should be supplemented that, if the functional section includes multiple spray rooms, the energy losses of all the spray rooms included in the functional section are added together to obtain the air-side energy consumption of the functional section.

[0131] In step 703, the heat exchange efficiency is determined according to the inlet air enthalpy, the inlet and outlet dry bulb temperatures, the inlet and outlet wet bulb temperatures and the inlet and outlet spray water temperatures corresponding to the functional segments.

[0132] The heat transfer efficiency of the spray chamber is determined using the following efficiency formula (8):

[0133]

[0134]

[0135] Among them, η1 represents the lower limit of the heat exchange efficiency of the spray room, η2 represents the upper limit of the heat exchange efficiency of the spray room, and t s2 Indicates the inlet air wet bulb temperature of the spray room, t s1 Indicates the outlet air wet bulb temperature of the spray room, t plw,out Indicates the outlet spray water temperature of the spray room, t plw,in It represents the inlet spray water temperature of the spray room, t2 represents the inlet air dry bulb temperature of the spray room, and t1 represents the outlet air dry bulb temperature of the spray room.

[0136] In step 704, the cooling and heating energy losses of the functional sections are determined according to the air-side energy consumption and heat exchange efficiency and the energy grade conversion value of the heat exchange fluid corresponding to the functional sections.

[0137] The following formula (9) is used to determine the cooling and heating energy loss of the functional section:

[0138] E i1 =k i Q i (9)

[0139] Among them, E i1 represents the cooling and heating energy loss of the i-th functional segment, η represents the heat exchange efficiency corresponding to the functional segment, k i Indicates the energy grade conversion value of the heat exchange fluid corresponding to the functional section, Q i Indicates the air side energy consumption of the functional section.

[0140] In step 705, the flow rate and temperature of the corresponding heat exchange fluid are determined according to the determined cold and hot energy loss of the functional segment, and the transmission energy consumption corresponding to the determined flow rate of the heat exchange fluid is determined.

[0141] In step 706, the energy loss of the functional segment is determined according to the cooling and heating energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the target function is obtained according to the overall energy loss.

[0142] The objective function is obtained according to the overall energy loss of the target functional segment combination, and the objective function is as follows (10):

[0143]

[0144] Where E represents the overall energy loss of the target functional segment combination, E i represents the energy loss of the ith functional segment, E i1 represents the cooling and heating energy loss of the i-th functional segment, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, k i represents the energy grade conversion value of the heat exchange fluid corresponding to the functional segment, η represents the heat exchange efficiency corresponding to the functional segment, Q i Indicates the air side energy consumption of the functional section, Indicates that in G i Transmission energy loss function under flow.

[0145] In step 104, control parameters of the heat exchange fluid corresponding to the target values ​​of the air parameters corresponding to each functional section are determined according to the law of conservation of heat exchange energy.

[0146] For example, to make the overall energy loss of the target functional segment combination meet the requirements (i.e., the energy consumption is the minimum), the corresponding air parameter target value is 36°C, then adjust as follows Figure 4 The control parameters of the heat exchange fluid corresponding to each functional section make the corresponding air parameter target value 36°C. At this time, the control parameters of the heat exchange fluid corresponding to each functional section are the control parameters of the heat exchange fluid corresponding to each functional section required by the target.

[0147] In step 105, the heat exchange fluid of the corresponding functional section is controlled to perform heat exchange according to the control parameters corresponding to each functional section.

[0148] Finally, the heat exchange fluid of the corresponding functional section is controlled by PLC and DDC according to the control parameters corresponding to each functional section obtained in step 104 to perform heat exchange, thereby achieving precise control of the fresh air unit.

[0149] In summary, the method provided in the present application determines the current operation mode of the fresh air unit by collecting and analyzing the relevant data of the fresh air unit, and determines the target function segment combination corresponding to the current operation mode according to the function segment combination corresponding to different operation modes, which fully considers the variability and complexity of the air treatment process, and determines different analysis results through the relevant data of different fresh air units, so as to accurately determine the different target function segments corresponding to the operation mode, and realizes the accurate analysis of the fresh air unit; by adjusting the air parameter adjustment range corresponding to each target function segment in the target function segment combination, it is determined that the overall energy loss of the target function segment combination reaches the required corresponding air parameter target value, so as to realize the accurate control of the parameters of each intermediate function segment of the fresh air unit, and finally, according to the conservation of heat exchange energy, the control parameters of the heat exchange fluid corresponding to the air parameter target value corresponding to each function segment are determined, and the heat exchange fluid of the corresponding function segment is controlled according to the control parameters corresponding to each function segment for heat exchange, so as to realize the effective control parameters in each function segment, thereby realizing the energy-saving control of the entire fresh air unit, effectively overcoming the problem that the existing fresh air unit control system cannot accurately control each function segment, and meets the energy-saving requirements of the fresh air unit, and improves the working efficiency and energy-saving efficiency of the fresh air unit.

[0150] After introducing the control method of the fresh air unit according to the exemplary embodiment of the present application, next, an electronic device according to another exemplary embodiment of the present application is introduced.

[0151] Those skilled in the art will appreciate that various aspects of the present application may be implemented as a system, method or program product. Therefore, various aspects of the present application may be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to as "circuit", "module" or "system" herein.

[0152] In some possible implementations, the electronic device according to the present application may include at least one processor and at least one memory. The memory stores program code, and when the program code is executed by the processor, the processor executes the control method of the fresh air unit according to various exemplary embodiments of the present application described above in this specification. For example, the processor may execute the steps in the control method of the fresh air unit.

[0153] Refer to the following Figure 6 The electronic device 130 according to this embodiment of the present application is described. Figure 6 The electronic device 130 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0154] like Figure 8 As shown, the electronic device 130 is in the form of a general electronic device. The components of the electronic device 130 may include but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 connecting different system components (including the memory 132 and the processor 131).

[0155] Bus 133 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.

[0156] The memory 132 may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 1321 and / or a cache memory 1322 , and may further include a read-only memory (ROM) 1323 .

[0157] The memory 132 may also include a program / utility 1325 having a set (at least one) of program modules 1324, such program modules 1324 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0158] The electronic device 130 may also communicate with one or more external devices 134 (e.g., keyboards, pointing devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 130, and / or communicate with any device that enables the electronic device 130 to communicate with one or more other electronic devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 135. Furthermore, the electronic device 130 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 136. As shown, the network adapter 136 communicates with other modules for the electronic device 130 via a bus 133. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0159] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 132 including instructions, and the instructions can be executed by the processor 131 to complete the control method of the fresh air unit. Optionally, the storage medium can be a non-transitory computer-readable storage medium, for example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0160] In an exemplary embodiment, a computer program product is also provided, including a computer program, and when the computer program is executed by the processor 131, any method of the control method of the fresh air unit provided in the present application is implemented.

[0161] In an exemplary embodiment, various aspects of a control method for a fresh air group provided in the present application can also be implemented in the form of a program product, which includes a program code. When the program product is run on a computer device, the program code is used to enable the computer device to execute the steps of the control method for a fresh air group according to various exemplary embodiments of the present application described above in this specification.

[0162] The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0163] The control method for a fresh air unit of the embodiment of the present application may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on an electronic device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.

[0164] A readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, wherein readable program code is carried. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium other than a readable storage medium, which may transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0165] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0166] The program code for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and also conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code can be executed entirely on the user electronic device, partially on the user device, as an independent software package, partially on the user electronic device and partially on the remote electronic device, or entirely on the remote electronic device or server. In the case of a remote electronic device, the remote electronic device can be connected to the user electronic device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external electronic device (for example, using an Internet service provider to connect through the Internet).

[0167] It should be noted that, although several units or subunits of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided into multiple units to be embodied.

[0168] In addition, although the operations of the method of the present application are described in a specific order in the drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0169] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0170] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable image scaling device to produce a machine, so that the instructions executed by the processor of the computer or other programmable image scaling device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0171] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable image scaling device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instruction device being implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0172] These computer program instructions may also be loaded onto a computer or other programmable image scaling device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0173] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0174] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A control method for a fresh air unit, characterized in that: The method comprises: Collect and analyze relevant data of the fresh air unit to determine the current operation mode of the fresh air unit; According to the functional segment combinations corresponding to different operating modes, determine the target functional segment combination corresponding to the current operating mode; According to the air parameter adjustment range corresponding to each target function segment in the target function segment combination, determine the air parameter target value corresponding to the requirement so that the overall energy loss of the target function segment combination reaches the requirement; Determine the control parameters of the heat exchange fluid corresponding to the target values ​​of the air parameters corresponding to each functional section according to the conservation of heat exchange energy; According to the control parameters corresponding to each functional section, the heat exchange fluid of the corresponding functional section is controlled to perform heat exchange; The overall energy loss of the target functional segment combination is determined in the following manner: Where E represents the overall energy loss of the target functional segment combination, E i represents the energy loss of the ith functional segment, E i1 represents the heat and cold energy loss of the i-th functional segment, E i2 represents the transmission energy loss of the i-th functional segment, G i represents the flow rate of the heat exchange fluid corresponding to the i-th functional section, t i represents the temperature of the heat exchange fluid corresponding to the i-th functional section, f(t i ) represents the unit flow rate of heat transfer fluid at temperature t i The following is the energy loss expression function converted by energy grade: Indicates that in G i Transmission energy loss function under flow, n represents the number of functional segments; The air parameter adjustment range corresponding to each target function segment includes the air temperature adjustment range corresponding to each target function segment, and the air temperature adjustment range corresponding to each target function segment is determined in the following manner: t i -Δt1 <t dbi <t i +Δt2+Δt3 Among them, t dbi represents the air temperature target value of the i-th target function segment, t i represents the temperature of the heat exchange fluid corresponding to the i-th target functional section, Δt1 represents the inlet end difference of the air, Δt2 represents the outlet end difference of the air, and Δt3 represents the outlet temperature rise of the heat exchange fluid corresponding to the i-th target functional section; According to the air parameter adjustment range corresponding to each functional segment in the target functional segment combination, determine the air parameter target value corresponding to the requirement so that the overall energy loss of the target functional segment combination reaches the requirement, including: Generating initial target air parameter adjustment values ​​corresponding to each functional segment in the target functional segment combination and within the air parameter adjustment range by a random method; The initial target air parameter adjustment value is used as the initial population, and according to the objective function maxf=1 / E, a genetic algorithm is used to iteratively optimize the air parameter adjustment range corresponding to each target functional segment until the termination condition is satisfied, wherein E represents the overall energy loss of the target functional segment combination; At the end of the iteration, the target value of the air parameter corresponding to the requirement is obtained so that the overall energy loss of the target functional segment combination reaches the requirement.

2. The method according to claim 1, characterized in that The collecting and analyzing the relevant data of the fresh air unit to determine the current operation mode of the fresh air unit includes: According to the collected data of the fresh air unit, determine the air supply dew point temperature Tdp0, the maximum temperature Tdb1 that the air can reach after the first-level surface cooling, and the wet bulb temperature Twb0 corresponding to the air supply dew point temperature; When the outdoor temperature Tdbw is greater than Tdb1 and Tdpw is greater than Tdp0, the operation mode of the fresh air unit is determined to be the first cooling and dehumidification operation mode; When Tdbw is greater than Tdb1 and Tdpw is less than Tdp0, it is determined that the operation mode of the fresh air unit is a cooling and precise humidification mode; When Tdbw is less than Tdb1 and Tdpw is greater than the supply air dew point temperature Tdp0, it is determined that the operation mode of the fresh air unit is to start the second cooling and dehumidification mode; When Tdbw is less than Tdb1 and Tdpw is less than Tdp0, and Twbw is greater than Twb0, it is determined that the operation mode of the fresh air unit is the cooling and humidification mode; When Tdbw is less than Tdb1, Tdpw is less than Tdp0, and Twbw is less than Twb0, it is determined that the operation mode of the fresh air unit is the heating and humidification mode.

3. The method according to claim 2, characterized in that According to the functional segment combinations corresponding to different operating modes, the target functional segment combination corresponding to the current operating mode is determined, including: If the operation mode of the fresh air unit is the first cooling and dehumidification mode, determining that the target functional segment combination includes a first-level medium-temperature water meter cooling and a second-level low-temperature water meter cooling; If the operation mode of the fresh air unit is cooling and precise humidification mode, determining the target functional segment combination includes first-level medium-temperature water surface cooling, second-level low-temperature water surface cooling and spraying; If the operation mode of the fresh air unit is the second cooling and dehumidification mode, determining that the target functional segment combination includes secondary low-temperature water meter cooling; If the operation mode of the fresh air unit is a cooling and humidification mode, determining that the target functional segment combination includes secondary low-temperature water meter cooling and spraying; If the operation mode of the fresh air unit is a heating and humidification mode, it is determined that the target functional segment combination includes heating and spraying.

4. The method according to claim 1, characterized in that After each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following way: If the target functional section includes heating / surface cooling, the air flow rate, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the corresponding functional section are determined according to the adjusted air parameters; Determine the air side energy consumption of the functional section according to the air flow rate, inlet and outlet air enthalpy, dry bulb temperature and air humidity content corresponding to the functional section; Determine the heat and cold energy loss of the functional section according to the energy grade conversion value of the heat exchange fluid corresponding to the functional section and the air side energy consumption; and Determining the flow rate and temperature of the corresponding heat exchange fluid according to the determined cold and hot energy loss of the functional section, and determining the transmission energy consumption corresponding to the flow rate of the heat exchange fluid; The energy loss of the functional segment is determined according to the cold and hot energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the objective function is obtained according to the overall energy loss.

5. The method according to claim 1, characterized in that After each adjustment of the air parameters during the optimization process, the corresponding objective function is determined in the following way: If the target functional section includes spraying, determine the air flow, inlet and outlet air enthalpy, inlet and outlet dry bulb temperature, inlet and outlet wet bulb temperature and inlet and outlet spray water temperature corresponding to the corresponding functional section according to the adjusted air parameters; Determine the air side energy consumption of the functional section according to the air flow rate corresponding to the functional section and the air enthalpy value of the inlet and outlet; Determine the heat exchange efficiency according to the inlet air enthalpy, inlet and outlet dry bulb temperature, inlet and outlet wet bulb temperature and inlet and outlet spray water temperature corresponding to the functional section; Determine the cooling and heating energy loss of the functional section according to the air side energy consumption and heat exchange efficiency and the energy grade conversion value of the heat exchange fluid corresponding to the functional section; Determining the flow rate and temperature of the corresponding heat exchange fluid according to the determined cold and hot energy loss of the functional section, and determining the transmission energy consumption corresponding to the flow rate of the heat exchange fluid; The energy loss of the functional segment is determined according to the cold and hot energy loss and the transmission energy loss, the overall energy loss of the target functional segment combination is obtained according to the energy loss of each functional segment, and the objective function is obtained according to the overall energy loss.

6. An electronic device, characterized in that: include: Display, processor and memory; The display is used to display information; The memory is used to store the processor executable instructions; The processor is configured to execute the instructions to implement the control method of the fresh air unit according to any one of claims 1-5.

7. A computer-readable storage medium, characterized in that: include: When the instructions in the computer-readable storage medium are executed by a terminal device, the terminal device is enabled to execute the control method for the fresh air unit according to any one of claims 1 to 5.

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