Air conditioning system, operation control method, energy efficiency evaluation method and equipment

Abstract

The invention provides an air conditioning system, an operation control method, an energy efficiency evaluation method and equipment, and an evaporator unit, a compressor unit, a cooling liquid heat exchange unit, a condenser unit and a refrigerant pump unit of the air conditioning system form a closed loop to dissipate heat of a data center machine room. The cooling liquid supply unit provides the cooling liquid for the cooling liquid heat exchange unit so as to dissipate the indoor heat obtained by the cooling liquid heat exchange unit, and the operation frequency or operation time of the compressor unit is reduced by utilizing the cooling capacity of the cooling liquid, so that the energy consumption generated by the compressor unit is reduced, and the service life of the compressor unit is prolonged. The cooling liquid heat exchange unit and the compressor unit serve as backups for each other, the operation stability of the air conditioning system is guaranteed, in addition, the air conditioning system is further provided with the cooling liquid spraying unit, the cooling liquid spraying unit dissipates heat of the condenser unit through low-temperature cooling liquid provided by the cooling liquid supply unit, the heat exchange efficiency of the condenser unit is improved, and the service life of the air conditioning system is prolonged. And therefore, the energy consumption generated by the compressor unit is further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular, to an air conditioning system, an operation control method, an energy efficiency evaluation method and device. Background Art

[0002] A data center, commonly known as a computer room, includes a computer system, a communication system, a storage system, an environmental control device, a monitoring device, and various security devices. Temperature regulation of the data center is a prerequisite for ensuring the stable operation of the data center.

[0003] Using groundwater to provide cooling is a common means of temperature regulation for data centers. Affected by climate and the water cycle rate, it is difficult to ensure the continuous low-temperature state of groundwater. In view of the continuous demand for a cold source to cool the data center, relying solely on groundwater cooling affects the heat dissipation effect of the data center condenser and cannot guarantee the reliability of temperature regulation of the data center. Summary of the Invention

[0004] The present application provides an air conditioning system, an operation control method, an energy efficiency evaluation method and device to improve the reliability of the air conditioning system in a data center.

[0005] In a first aspect, the present application provides an air conditioning system, including: an evaporator unit, a compressor unit, a coolant heat exchange unit, a condenser unit, a refrigerant pump unit, a coolant supply unit, and a coolant spraying unit; the coolant heat exchange unit is provided with a coolant input end, a coolant output end, a refrigerant input end, and a refrigerant output end;

[0006] The evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, the condenser unit, and the refrigerant pump unit are connected through a first pipeline to form a first closed-loop circuit, and the first pipeline contains a refrigerant;

[0007] The coolant supply unit, the coolant input end, and the coolant output end are connected through a second pipeline to form a second closed-loop circuit, and the second pipeline contains a coolant;

[0008] The coolant supply unit and the coolant spraying unit are connected through a third pipeline to form a third closed-loop circuit, and the third pipeline contains the coolant; the coolant spraying unit is used to dissipate heat for the condenser unit.

[0009] In the above technical solution, the evaporator unit, compressor unit, coolant heat exchange unit, condenser unit, and refrigerant pump unit of the air conditioning system form a closed loop to dissipate heat for the data center computer room. The coolant supply unit provides coolant for the coolant heat exchange unit to dissipate the indoor heat obtained by the coolant heat exchange unit. By utilizing the cooling capacity of the coolant, the operating frequency or operating time of the compressor unit is reduced, thereby reducing the energy consumption generated by the compressor unit. The coolant heat exchange unit and the compressor unit are backup to each other to ensure the operating stability of the air conditioning system. In addition, the air conditioning system is also provided with a coolant spraying unit, and the coolant spraying unit uses the low-temperature coolant provided by the coolant supply unit to dissipate heat from the condenser unit, improving the heat exchange efficiency of the condenser unit, thereby further reducing the energy consumption generated by the compressor unit.

[0010] In a second aspect, the present application provides an operating control method for an air conditioning system. The method is applied to the air conditioning system described in the first aspect, and the method includes:

[0011] Obtain the return air temperature of the evaporator fan and a preset temperature;

[0012] Based on the return air temperature and the preset temperature, adjust the air conditioning system to operate in a corresponding working mode;

[0013] The working modes include an idle mode, a heat exchange mode, a condenser air cooling mode, a condenser-coolant spraying mode, a pressure pump mode, a compressor air cooling mode, or a compressor-coolant spraying mode.

[0014] In the above technical solution, the air conditioning system sets multiple working modes based on the various heat exchange units it includes. The controller determines the computer room temperature according to the return air temperature of the evaporator fan, and switches the working mode according to the computer room temperature and the preset temperature to ensure the stable operation of the air conditioning system.

[0015] In a third aspect, the present application provides an energy efficiency evaluation method for an air conditioning system. The method is applied to the air conditioning system described in the first aspect, and the method includes:

[0016] Statistically analyze the temperature distribution range of the coolant available to the air conditioning system within a preset period; wherein, the air conditioning system uses the coolant for cooling;

[0017] Within the preset period, statistically analyze the time periods when the coolant is at multiple target temperatures and the energy efficiency ratio of the air conditioning system in each time period; the temperature distribution range of the coolant includes the multiple target temperatures;

[0018] Based on the time periods when the coolant is at each target temperature and the preset period, calculate the energy efficiency ratio of the coolant at each target temperature; wherein, multiple energy efficiency ratios correspond one-to-one with multiple energy efficiency ratios;

[0019] Determine the sum of the products of the energy efficiency ratios of the multiple target temperatures and the corresponding energy efficiency ratios as the comprehensive energy efficiency ratio of the air conditioning system during the preset period.

[0020] In a fourth aspect, the present application provides a motion control device for an air conditioning system, including:

[0021] An acquisition module, configured to acquire the return air temperature of the evaporator fan and a preset temperature;

[0022] A processing module, configured to regulate the air conditioning system to operate in a corresponding working mode based on the return air temperature and the preset temperature;

[0023] The working modes include an idle mode, a heat exchange mode, a condenser air cooling mode, a condenser - coolant spraying mode, a pressure pump mode, a compressor air cooling mode, or a compressor - coolant spraying mode.

[0024] In a fifth aspect, the present application provides a controller, including: a processor and a memory communicatively connected to the processor;

[0025] The memory stores computer - executable instructions;

[0026] When the processor executes the computer - executable instructions, it is configured to implement the method described in any one of the first aspect or the second aspect.

[0027] The present application provides an air conditioning system, an operation control method, an energy efficiency evaluation method and device. The evaporator unit, compressor unit, coolant heat exchange unit, condenser unit, and refrigerant pump unit of the air conditioning system form a closed - loop circuit to dissipate heat for the data center computer room. The coolant supply unit provides coolant for the coolant heat exchange unit to dissipate the indoor heat obtained by the coolant heat exchange unit. By utilizing the coolant cooling capacity, the operating frequency or operating time of the compressor unit is reduced, thereby reducing the energy consumption generated by the compressor unit. The coolant heat exchange unit and the compressor unit are backup to each other to ensure the operation stability of the air conditioning system. In addition, the air conditioning system is also provided with a coolant spraying unit, and the coolant spraying unit uses the low - temperature coolant provided by the coolant supply unit to dissipate heat from the condenser unit, improving the heat exchange efficiency of the condenser unit, and further reducing the energy consumption generated by the compressor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.

[0029] Figure 1 It is a schematic structural diagram of a groundwater - cooled air - source air conditioning system provided by the present application according to an exemplary embodiment;

[0030] Figure 2A and Figure 2B is a schematic structural diagram of an air-conditioning system provided by the present application according to an exemplary embodiment;

[0031] Figure 3A and Figure 3B is a schematic structural diagram of an air-conditioning system provided by the present application according to an exemplary embodiment;

[0032] Figure 4 is an operation control method of an air-conditioning system provided by the present application according to an exemplary embodiment;

[0033] Figure 5 is an operation control method of an air-conditioning system provided by the present application according to another exemplary embodiment;

[0034] Figure 6 is an operation control method of an air-conditioning system provided by the present application according to another exemplary embodiment;

[0035] Figure 7 is a schematic flow diagram of an energy efficiency evaluation method of an air-conditioning system provided by the present application according to an exemplary embodiment;

[0036] Figure 8 is a schematic structural diagram of an operation control device provided by the present application according to an exemplary embodiment;

[0037] Figure 9 is a schematic structural diagram of a controller provided by the present application according to an embodiment.

[0038] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0039] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. 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 appended claims.

[0040] A data center, commonly known as a computer room, includes computer systems, communication systems, storage systems, environmental control devices, monitoring devices, and various security devices. Temperature regulation in the data center is a prerequisite for ensuring the stable operation of the data center.

[0041] Utilizing groundwater to provide cooling is a common means for temperature regulation in the data center.Figure 1 This is a schematic structural diagram of a groundwater-cooled air conditioning system provided by this application according to an exemplary embodiment. As Figure 1 shown, the water processor extracts water with a relatively low temperature from the flowing groundwater, transports the water to a plate heat exchanger for heat exchange with the refrigerant therein, and the heated water is discharged into the river through a drain port. The refrigerant with a reduced temperature is transported to a refrigeration unit by a pump, passes through a condenser and an evaporator, and exchanges heat with chilled water. The low-temperature chilled water exchanges heat with the air blown by an evaporator fan to blow cool air into the machine room and lower the room temperature.

[0042] Affected by climate and the water cycle rate, it is difficult to ensure the continuous low-temperature state of groundwater. In view of the continuous demand for a cold source for cooling in a data center, relying solely on groundwater cooling affects the heat dissipation effect of the condenser in the data center and cannot guarantee the reliability of temperature control in the data center.

[0043] To solve the above problems, this application provides an air conditioning system, an operation control method, an energy efficiency evaluation method, and a device. The technical concept of this application is as follows: The evaporator unit, compressor unit, coolant heat exchange unit, condenser unit, and refrigerant pump unit of the air conditioning system form a closed-loop circuit to dissipate heat for the data center machine room. The coolant supply unit provides coolant for the coolant heat exchange unit to dissipate the indoor heat obtained by the coolant heat exchange unit. By utilizing the cold quantity of the coolant, the operating frequency or operating time of the compressor unit is reduced, thereby reducing the energy consumption generated by the compressor unit. The coolant heat exchange unit and the compressor unit are backup to each other to ensure the operating stability of the air conditioning system. In addition, the air conditioning system is also provided with a coolant spraying unit. The coolant spraying unit uses the low-temperature coolant provided by the coolant supply unit to dissipate heat from the condenser unit, improving the heat exchange efficiency of the condenser unit, thereby further reducing the energy consumption generated by the compressor unit.

[0044] Next, refer to Figure 2A and Figure 2B to explain the structure of the air conditioning system provided by this application.

[0045] The air conditioning system includes an evaporator unit 104, a compressor unit 102, a coolant heat exchange unit 105, a condenser unit, a refrigerant pump unit 103, a coolant supply unit 107, and a coolant spraying unit. The condenser unit includes a condenser 1011 and a condenser control valve 1012. The coolant spraying unit includes a coolant spraying device 1062 and a control component 1061. The coolant heat exchange unit 105 is provided with a coolant input end, a coolant output end, a refrigerant input end, and a refrigerant output end.

[0046] The refrigerant input and output ends of the evaporator unit 104, the compressor unit 102, and the coolant heat exchange unit 105, the condenser unit, and the refrigerant pump unit 103 are connected through a first pipeline to form a first closed-loop circuit, and the first pipeline contains a refrigerant. During the circulation of the refrigerant in the first closed-loop circuit, the evaporator unit 104 exchanges heat with the low-temperature refrigerant to obtain cold energy from the refrigerant and reduce the room temperature of the data center.

[0047] The coolant input and output ends of the coolant supply unit 107 and the coolant heat exchange unit 105 are connected through a second pipeline to form a second closed-loop circuit, and the second pipeline contains a coolant. The coolant heat exchange unit 105 is used to exchange heat between the coolant provided by the coolant supply unit 107 and the refrigerant transmitted in the first pipeline, so as to use the coolant to cool and dissipate heat from the refrigerant, which can reduce the running time of the compressor unit 102 or reduce the running frequency of the compressor unit 102.

[0048] The coolant supply unit 107 and the coolant spraying unit are connected through a third pipeline to form a third closed-loop circuit, and the third pipeline contains a coolant. The coolant spraying unit is used to dissipate heat from the condenser unit to improve the heat exchange efficiency of the condenser unit and further reduce the energy consumption generated by the operation of the compressor unit 102.

[0049] The connection structures of the above air conditioning system include various types. Below, different circuit structures of the air conditioning system and corresponding operation control methods will be explained through multiple embodiments.

[0050] The output end of the evaporator unit 104 is connected to the input end of the compressor unit 102. The output end of the compressor unit 102 is connected to the input end F of the condenser unit and is also connected to the refrigerant input end C of the coolant heat exchange unit 105. The refrigerant output end D of the coolant heat exchange unit 105 and the output end E of the condenser unit are both connected to the input end of the refrigerant pump unit 103. The output end of the refrigerant pump unit 103 is connected to the input end of the evaporator unit 104. The above units are connected through the first pipeline to form a first closed-loop circuit. The refrigerant circulates and is transmitted in the first pipeline.

[0051] The evaporator unit 104 includes at least one evaporator 1041 and a valve 108, and each evaporator 1041 is controlled by the corresponding valve 108. When the evaporator group 104 includes multiple evaporators 1041, the multiple evaporators 1041 are connected in parallel after being connected in series with the corresponding valves 108.

[0052] In one embodiment, the compressor unit 102 is located outdoors, the number of compressor units 102 is 1, and the output ends of each evaporator 1041 are all connected to the input end of one compressor unit 102, and its connection structure is as Figure 2A shown.

[0053] In another embodiment, if the compressor unit 102 is located indoors, the number of compressor units 102 is the same as the number of evaporators 1041. Each compressor unit 102 corresponds to one evaporator 1041. After each compressor unit 102, the corresponding evaporator 1041, and the valve 108 are connected in series, they are then connected in parallel. The connection structure is as Figure 2B shown.

[0054] The compressor unit 102 includes a compressor 1021 and a compressor bypass valve 1022. The compressor bypass valve 1022 and the compressor 1021 are connected in parallel. The input end of the compressor 1021 and the first end of the compressor bypass valve 1022 are connected as the input end of the compressor unit 102, and the output end of the compressor 1021 and the second end of the compressor bypass valve 1022 are connected as the output end of the compressor unit 102.

[0055] The coolant heat exchange unit 105 includes a heat exchanger 1051 and a heat exchange control valve 1054.

[0056] The heat exchanger 1051 is provided with a first end, a second end, a third end, and a fourth end. The first end of the heat exchanger 1051 is connected to the refrigerant input end C through a first pipeline, the second end of the heat exchanger 1051 is connected to the refrigerant output end D through a first pipeline, the third end of the heat exchanger 1051 serves as the coolant input end B, and the fourth end of the heat exchanger 1051 serves as the coolant output end A.

[0057] The heat exchange control valve 1054 is disposed on the first pipeline between the first end of the heat exchanger 1051 and the refrigerant input end C, or is disposed on the first pipeline between the second end of the heat exchanger 1051 and the refrigerant output end D.

[0058] The refrigerant input end C is connected to the output end of the compressor unit 102, and the refrigerant output end D is connected to the input end of the refrigerant pump unit 103.

[0059] The air conditioning system further includes a coolant supply unit 107, which is provided with an input end and an output end.

[0060] The coolant input end B and the output end of the coolant supply unit 107 are connected through a second pipeline, and the coolant output end A and the input end of the coolant supply unit 107 are connected through a second pipeline.

[0061] In some embodiments, a first coolant flow regulating valve 1053 is disposed on the second pipeline between the coolant input end B and the output end of the coolant supply unit 107, and / or a first coolant flow regulating valve 1052 is disposed on the second pipeline between the coolant output end A and the input end of the coolant supply unit 107.

[0062] The first coolant flow regulating valve 1053 is used to regulate the flow rate of the coolant when the coolant supply unit 107 supplies the coolant.

[0063] The condenser unit includes a condenser 1011 and a condenser control valve 1012. Inside the condenser unit, the condenser 1011 and the condenser control valve 1012 are connected in series.

[0064] The input end F of the condenser unit is connected to the refrigerant input end C, and the output end E of the condenser unit is connected to the refrigerant output end D.

[0065] The refrigerant pump unit 103 includes a refrigerant pump 1031 and a refrigerant pump bypass valve 1032. The refrigerant pump 1031 and the refrigerant pump bypass valve 1032 are connected in parallel. The input end of the refrigerant pump 1031 and the first end of the refrigerant pump bypass valve 1032 are connected as the input end of the refrigerant pump unit 103, and the output end of the refrigerant pump 1031 and the second end of the refrigerant pump bypass valve 1032 are connected as the output end of the refrigerant pump unit 103.

[0066] The output end of the refrigerant pump unit 103 is connected to the input end of the evaporator 104.

[0067] The coolant supply unit 107 includes at least one coolant supply subunit. In the Figure 2A structure shown, it includes N subunits: the first coolant supply subunit to the Nth coolant supply subunit. Each subunit has an input end and an output end. The input ends of the subunits are connected as the input end of the coolant supply unit 107, and the output ends of the subunits are connected as the output end of the coolant supply unit 107.

[0068] Each coolant supply subunit includes a coolant storage unit, an input pipeline, an output pipeline, an input pump provided on the input pipeline, and an output pump provided on the output pipeline. Inside each coolant supply subunit, one end of the input pipeline serves as the input end of the coolant supply subunit, and the other end is placed inside the coolant storage unit. One end of the output pipeline serves as the output end of the coolant supply subunit, and the other end is placed inside the coolant storage unit. The input pump is used to drive the input pipeline to drain the coolant into the coolant storage unit, and the output pump is used to drive the output pipeline to input the coolant provided by the coolant storage unit into the second pipeline.

[0069] It should be noted that in each coolant storage unit, the distance between the positions of the input pipeline and the output pipeline is greater than a preset length threshold, and this preset length threshold is determined based on the maximum size of the coolant storage unit. Setting the distance between the positions of the input pipeline and the output pipeline to be greater than the preset length threshold is used to cool down through the flow of the coolant between the two pipelines.

[0070] The coolant stored in the coolant storage unit includes natural water or other coolants that meet environmental protection standards. Among them, natural water refers to all available water resources in nature, such as large reserves of available water resources like groundwater, lake water, reservoir water, river water, and seawater. Among them, groundwater is the water source below the permafrost layer (if any). For example, if the thickness of the deepest permafrost layer in a region is 1.5 - 2 meters, then water 2 meters below the surface of the entire region can be obtained as groundwater according to the strictest standards.

[0071] In Figure 2A In the structure shown, taking the first coolant supply subunit as an example, it includes a first coolant storage unit 1071, with an input pump b12 provided on its input pipeline and an output pump b11 provided on its output pipeline. The structures of other coolant supply subunits are similar to it and will not be elaborated specifically.

[0072] The air - conditioning system is also provided with a coolant spraying unit, and the coolant spraying unit is connected to the coolant supply unit 107 through a third pipeline.

[0073] The coolant spraying unit includes a coolant spraying device 1062 and a control component 1061. The control component 1061 is placed on the third pipeline between the coolant spraying device 1062 and the coolant supply unit 107. Relative to the coolant spraying device 1062, the third pipeline includes an input pipeline and an output pipeline. The input pipeline is the pipeline connected to the input end G of the coolant spraying device 1062, and the output pipeline is the pipeline connected to the output end H of the coolant spraying device 1062.

[0074] The control component 1061 includes a coolant spraying pump and / or a second coolant flow regulating valve, which is used to adjust the working state of the coolant spraying device 1062. When the coolant spraying pump operates and / or the second coolant flow regulating valve opens, the coolant spraying device 1062 works; when the coolant spraying pump stops operating and / or the second coolant flow regulating valve closes, the coolant spraying device 1062 does not work.

[0075] The coolant spraying device 1062 is placed outside the condenser unit, and is provided with spraying ports and a collection pool. A plurality of spraying ports are arranged inside the coolant spraying device 1062 and around the condenser unit 101, which are used to obtain coolant from the input end of the coolant spraying device 1062 and spray it out from the plurality of spraying ports. After heat exchange, the remaining coolant enters the collection pool for coolant recovery.

[0076] The air - conditioning system also includes a temperature sensor, a humidity sensor, and a controller. The controller is connected to the above - mentioned each unit, as well as the temperature sensor and the humidity sensor.

[0077] The temperature sensor is used to sample the return air temperature of the evaporator unit 104, the temperature of the coolant in the coolant supply unit, or the outdoor ambient temperature.

[0078] The humidity sensor is used to sample the humidity of the environment where the coolant spraying unit is located.

[0079] The controller is used to control the operating states of the compressor unit, the coolant heat exchange unit 105, the condenser unit, the refrigerant pump unit, the coolant supply unit, and the coolant spraying unit according to the outdoor ambient temperature and the temperature of the coolant when the return air temperature and the preset temperature meet the preset refrigeration conditions.

[0080] It should be noted that in Figure 2A and Figure 2B in the shown structure, the heat exchanger 1051 and the condenser 1011 cannot operate simultaneously.

[0081] Figure 3A and Figure 3B are the schematic structural diagrams of the air conditioning system provided by the present application according to another exemplary embodiment.

[0082] Compared with Figure 2A the structure of the air conditioning system shown, except that Figure 3A the connection manner between the condenser unit and the coolant heat exchange unit 105, the internal connection structure of the condenser unit, and the internal connection structure of the coolant heat exchange unit 105 in the shown air conditioning system are different, other connection manners are the same. The following will explain the different connection parts.

[0083] In Figure 3A in the shown air conditioning system, the condenser unit and the coolant heat exchange unit 105 are connected in series. The output end of the compressor unit 102 and the refrigerant input end D of the coolant heat exchange unit 105 are connected through a first pipeline, the refrigerant output end C of the coolant heat exchange unit 105 is connected to the input end E of the condenser unit through a first pipeline, and the output end F of the condenser unit is connected to the input end of the refrigerant pump unit 103 through a first pipeline.

[0084] Figure 3B The difference between the air conditioning system shown in Figure 2B and the difference between Figure 3A and Figure 2A are the same, and will not be elaborated here.

[0085] In Figure 3A and Figure 3BIn the structure of the air conditioning system shown, the coolant heat exchange unit 105 includes a heat exchanger 1051 and a heat exchange bypass valve 1055. The heat exchanger 1051 is provided with a first end, a second end, a third end, and a fourth end. After the first end of the heat exchanger 1051 is connected to the input end of the heat exchange bypass valve 1055, it serves as the refrigerant input end D. After the second end of the heat exchanger 1051 is connected to the output end of the heat exchange bypass valve 1055, it serves as the refrigerant output end C. The third end of the heat exchanger 1051 serves as the coolant input end A, and the fourth end of the heat exchanger 1051 serves as the coolant output end B. Among them, the connection manner of the coolant input end A, the coolant output end B, and the coolant supply unit 107 is the same as that of Figure 2A , Figure 2B shown, and will not be elaborated here.

[0086] The condenser unit includes a condenser 1011 and a condenser bypass valve 1013. In the condenser unit, the condenser 1011 and the condenser bypass valve 1013 are connected in parallel. That is, the input end of the condenser 1011 and the first end of the condenser bypass valve 1013 are connected as the input end E of the condenser unit, and the output end of the condenser 1011 and the second end of the condenser bypass valve 1013 are connected as the output end F of the condenser unit.

[0087] Next, the operation control methods of the above air conditioning systems will be explained.

[0088] Figure 4 The flowchart of the operation control method of the air conditioning system provided by an exemplary embodiment of this application. This operation control method can be applied to the above air conditioning systems, such as Figure 4 shown, and the operation control method includes:

[0089] S101. The controller obtains the return air temperature and the preset temperature of the evaporator unit.

[0090] The evaporator unit is arranged indoors, and the return air temperature of the evaporator fan is the temperature of the return air that enters the evaporator unit after circulating indoors, that is, the indoor temperature of the computer room.

[0091] The preset temperature is the temperature set by the user and expected to be reached by the data center computer room.

[0092] S102. The controller adjusts and controls the operation of the air conditioning system in the corresponding working mode based on the return air temperature and the preset temperature.

[0093] Based on the types of units included in the air conditioning system, the working modes in which the air conditioning system can operate can be determined as follows: The working modes include an idle mode, a heat exchange mode, a condenser air cooling mode, a condenser-coolant spraying mode, a pressure pump mode, a compressor air cooling mode, or a compressor-coolant spraying mode.

[0094] In one embodiment, when the difference between the return air temperature and the preset temperature is less than the first temperature difference, the air conditioning system is controlled to operate in the idle mode.

[0095] For example: if the preset temperature is 28 degrees and the first temperature difference is 2 degrees, then when the return air temperature is less than 30 degrees, the air conditioning system is controlled to operate in the idle mode.

[0096] In the idle mode, the evaporator unit 104 is controlled to operate, the compressor bypass valve 1022, the refrigerant pump bypass valve 1032, the condenser valve, the heat exchange valve, and the first coolant flow regulating valves 1052 and 1053 are closed, the compressor 1021, the refrigerant pump 1031, the condenser 1011, the input pumps b11 - bN1 and the output pumps b12 - bN2 of each coolant supply sub - unit stop running, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0097] Among them, in the Figure 2A and Figure 2B shown air conditioning system, the condenser valve is the condenser control valve 1012, and the heat exchange valve is the heat exchange control valve 1054; in the Figure 3A and Figure 3B shown air conditioning system, the condenser valve is the condenser bypass valve 1013, and the heat exchange valve is the heat exchange bypass valve 1055.

[0098] When the control component 1061 of the coolant spraying unit includes a coolant spraying pump, the coolant spraying pump is controlled to stop running; when the control component 1061 of the coolant spraying unit includes a second coolant flow regulating valve, the second coolant flow regulating valve is controlled to close.

[0099] When the difference between the return air temperature and the preset temperature is greater than or equal to the first temperature difference, the air conditioning system is controlled to operate in a non - idle mode. Among them, the non - idle mode includes a heat exchange mode, a condenser air - cooling mode, a condenser - coolant spraying mode, a pressure pump mode, a compressor air - cooling mode, or a compressor - coolant spraying mode.

[0100] For example: if the preset temperature is 28 degrees and the first temperature difference is 2 degrees, then when the return air temperature is greater than or equal to 30 degrees, the air conditioning system is controlled to operate in the non - idle mode.

[0101] More specifically, when the difference between the return air temperature and the preset temperature is greater than or equal to the first temperature difference, the temperature of the coolant provided by the coolant supply unit 107 is obtained, and based on the preset temperature and the temperature of the coolant, the operating mode of the air conditioning system is determined.

[0102] When the difference between the preset temperature and the temperature of the coolant is greater than the first temperature difference threshold, the air conditioning system is controlled to operate in the heat exchange mode.

[0103] When the difference between the preset temperature and the temperature of the coolant is less than or equal to the first temperature difference threshold, control the air-conditioning system to operate in a non-heat exchange mode.

[0104] Wherein, the temperature of the coolant is the lowest temperature of the available coolant. For example, when there are 5 coolant supply sub-units in the coolant supply unit 107 and the liquid level values of the coolant in 2 coolant supply sub-units are not within the available liquid level range, the actual number of available coolant supply sub-units is 3. Among the 3 coolant supply sub-units, the average value of the multiple temperatures of each sub-unit is obtained as the corresponding temperature value, and the coolant supply sub-unit with the lowest temperature is taken as the current coolant supply sub-unit, and its temperature is the temperature of the coolant.

[0105] The non-heat exchange mode includes a condenser air-cooling mode, a condenser-coolant spraying mode, a pressure pump mode, a compressor air-cooling mode or a compressor-coolant spraying mode;

[0106] The following explains the operation control method based on the structures of different air-conditioning systems.

[0107] Figure 5 For an operation control method based on the Figure 2A and Figure 2B shown air-conditioning system in an exemplary embodiment of the present application, as Figure 5 shown, includes:

[0108] S201. Obtain the return air temperature of the evaporator fan and the preset temperature.

[0109] S202. Judge whether the difference between the return air temperature minus the preset temperature is less than the first temperature difference.

[0110] If so, enter step S203; otherwise, enter step S204.

[0111] S203. Control the air-conditioning system to operate in an idle mode.

[0112] In the idle mode, control the evaporator unit 104 to operate, close the compressor bypass valve 1022, the refrigerant pump bypass valve 1032, the condenser control valve 1012, the heat exchange control valve 1054, the first coolant flow regulating valves 1052 and 1053, stop the operation of the compressor 1021, the refrigerant pump 1031, the condenser 1011, the input pumps b11~bN1 and the output pumps b12~bN2 of each coolant supply sub-unit, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0113] S204. Obtain the temperature of the coolant provided by the coolant supply unit.

[0114] S205. Judge whether the difference between the preset temperature and the temperature of the coolant is greater than the first temperature difference threshold.

[0115] If so, go to step S206; otherwise, go to step S207.

[0116] S206. Control the air conditioning system to operate in the heat exchange mode.

[0117] Control the evaporator unit 104 to operate, open the compressor bypass valve 1022, the heat exchange control valve 1054, and the first coolant flow regulating valves 1052 and 1053, close the refrigerant pump bypass valve 1032 and the condenser control valve 1012, stop the operation of the compressor 1021 and the condenser 1011, operate the refrigerant pump 1031 and the input and output pumps of at least one coolant supply subunit, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0118] S207. Obtain the outdoor ambient temperature.

[0119] S208. Determine whether the outdoor ambient temperature is within the first preset temperature range.

[0120] If so, go to step S209; otherwise, go to step S210.

[0121] S209. Control the air conditioning system to operate in the condenser air-cooled mode.

[0122] Control the evaporator unit 104 to operate, open the compressor bypass valve 1022 and the condenser control valve 1012, close the heat exchange control valve 1054, the refrigerant pump bypass valve 1032, and the first coolant flow regulating valves 1052 and 1053, stop the operation of the compressor 1021 and the input and output pumps of each coolant supply subunit, operate the condenser 1011 and the refrigerant pump 1031, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0123] S210. Determine whether the outdoor ambient temperature is within the second preset ambient temperature range.

[0124] The minimum value of the second preset ambient temperature range is greater than the maximum value of the first preset temperature range.

[0125] If so, go to step S211; otherwise, go to step S212.

[0126] S211. Control the air conditioning system to operate in the condenser - coolant spraying mode.

[0127] Control the operation of the evaporator unit 104, open the compressor bypass valve 1022 and the condenser control valve 1012, close the heat exchange control valve 1054, the refrigerant pump bypass valve 1032, and the first coolant flow regulating valves 1052 and 1053, stop the operation of the compressor 1021, and operate the condenser 1011, the refrigerant pump 1031, and the input and output pumps of at least one coolant supply subunit.

[0128] In addition, it is also necessary to obtain the humidity of the environment where the coolant spraying unit is located. When the humidity is within the preset humidity range and the outdoor ambient temperature is greater than the preset freezing pipe temperature threshold, control the control component 1061 of the coolant spraying unit to be in the working state, and then the coolant spraying device 1062 operates; when the humidity is outside the preset humidity range, and / or, the outdoor ambient temperature is less than or equal to the preset freezing pipe temperature threshold, control the control component 1061 of the coolant spraying unit to be in the stopped working state, and then the coolant spraying device 1062 does not operate. In one embodiment, the preset freezing pipe temperature threshold is the sum of the coolant freezing point temperature and a preset anti-freezing temperature difference (for example: 0.5 degrees), and the preset humidity range is a humidity range set based on the water-saving standard of the air-conditioning system.

[0129] When controlling the operation of the input and output pumps of at least one coolant supply subunit, obtain the temperature of the coolant and the liquid level value of the coolant in each coolant supply subunit. In one embodiment, control the input and output pumps of the coolant supply subunit where the liquid level value of the coolant is within the available liquid level range and the temperature of the coolant is within the available temperature range to operate; in another embodiment, control the input and output pumps of the coolant supply subunit where the liquid level value of the coolant is within the available liquid level range and the temperature of the coolant is the lowest to operate.

[0130] S212. Determine whether the outdoor ambient temperature is within the third preset ambient temperature range.

[0131] The minimum value of the third preset ambient temperature range is greater than the maximum value of the second preset ambient temperature range.

[0132] If yes, go to step S213; otherwise, go to step S214.

[0133] S213. Control the air-conditioning system to operate in the pressure pump mode.

[0134] Control the operation of the evaporator unit 104, open the condenser control valve 1012, close the compressor bypass valve 1022, the heat exchange control valve 1054, the refrigerant pump bypass valve 1032, and the first coolant flow regulating valves 1052 and 1053, stop the operation of the input and output pumps of each coolant supply subunit, operate the compressor 1021, the condenser 1011, and the refrigerant pump 1031, and the control component 1061 of the coolant spraying unit is in the stopped working state.

[0135] Among them, the operating frequency of the compressor 1021 is within the first preset frequency range.

[0136] S214. Determine whether the outdoor ambient temperature is within the fourth preset ambient temperature range.

[0137] The minimum value of the fourth preset ambient temperature range is greater than the maximum value of the third preset ambient temperature range.

[0138] If yes, go to step S215; otherwise, go to step S216.

[0139] S215. Control the air-conditioning system to operate in the compressor air-cooling mode.

[0140] Control the evaporator unit 104 to operate, open the refrigerant pump bypass valve 1032 and the condenser control valve 1012, close the compressor bypass valve 1022, the heat exchange control valve 1054, and the first coolant flow regulating valves 1052 and 1053, stop the operation of the refrigerant pump 1031 and the input and output pumps of each coolant supply subunit, operate the compressor 1021 and the condenser 1011, and the control component 1061 of the coolant spraying unit is in a stopped working state;

[0141] Among them, the operating frequency of the compressor 1021 is within the second preset frequency range, and the minimum value of the second preset frequency range is greater than the maximum value of the first preset frequency range.

[0142] S216. When the return air temperature is greater than the emergency cooling threshold, control the air-conditioning system to operate in the compressor-coolant spraying mode.

[0143] Among them, the emergency cooling threshold is less than or equal to the high-temperature warning threshold. The high-temperature warning threshold is used to send an alarm message to the air-conditioning supervisor when the return air temperature is greater than or equal to it.

[0144] When the air-conditioning system operates in the compressor-coolant spraying mode, control the evaporator unit 104 to operate, open the refrigerant pump bypass valve 1032 and the condenser control valve 1012, close the compressor bypass valve 1022, the heat exchange control valve 1054, and the first coolant flow regulating valves 1052 and 1053, stop the operation of the refrigerant pump 1031, operate the compressor 1021, the condenser 1011, and the input and output pumps of at least one coolant supply subunit, and the control component 1061 of the coolant spraying unit is in a working state;

[0145] Among them, the operating frequency of the compressor 1021 is within the third preset frequency range, and the minimum value of the third preset frequency range is greater than or equal to the minimum value of the second preset frequency range.

[0146] It should be noted that during the operation from step S206 to step S215, when the return air temperature meets the conditions of this step, the operation process of other steps is interrupted and this step is entered.

[0147] Figure 6 For an exemplary embodiment of the present application, based on Figure 3A and Figure 3B the operation control method of the air conditioning system shown.

[0148] Since the coolant heat exchange unit and the condenser unit are in series, in the first case, the heat exchange bypass valve 1055 is opened when the condenser 1011 is operating, and the first coolant flow regulating valves 1053 and 1052 are closed. When the condenser 1011 is not operating, it is closed, and the first coolant flow regulating valves 1053 and 1052 are opened.

[0149] In the second case, the heat exchange bypass valve 1055 is closed when the air conditioning system is operating normally. Then, in the non-idle mode, the first coolant flow regulating valves 1053 and 1052 are always open, and the heat exchanger 1051 is always working.

[0150] Based on the above two usage methods of the heat exchange bypass valve 1055, two methods will also be adopted for control during the operation of the air conditioning system.

[0151] Specifically, as Figure 6 shown, the operation control method includes:

[0152] S301. Obtain the return air temperature of the evaporator fan and the preset temperature.

[0153] S302. Determine whether the difference between the return air temperature and the preset temperature is less than the first temperature difference.

[0154] If yes, go to step S303; otherwise, go to step S304.

[0155] S303. Control the air conditioning system to operate in the idle mode.

[0156] In the idle mode, control the evaporator unit 104 to operate, and close the compressor bypass valve 1022, the refrigerant pump bypass valve 1032, the condenser bypass valve 1013, the heat exchange bypass valve 1055, the first coolant flow regulating valves 1052 and 1053. Stop the operation of the compressor 1021, the refrigerant pump 1031, the condenser 1011, the input pumps b11~bN1 and the output pumps b12~bN2 of each coolant supply sub-unit, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0157] S304. Obtain the temperature of the coolant provided by the coolant supply unit.

[0158] S305. Determine whether the difference between the preset temperature and the temperature of the coolant is greater than the first temperature difference threshold.

[0159] If so, proceed to step S306; otherwise, proceed to step S307.

[0160] S306. Control the air conditioning system to operate in the heat exchange mode.

[0161] Control the evaporator unit 104 to operate, open the compressor bypass valve 1022, the condenser bypass valve 1013, and the first coolant flow regulating valves 1052 and 1053, close the refrigerant pump bypass valve 1032 and the heat exchange bypass valve 1055, stop the operation of the compressor 1021 and the condenser 1011, operate the refrigerant pump 1031 and the input and output pumps of at least one coolant supply subunit, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0162] S307. Determine whether the difference between the preset temperature and the temperature of the coolant is greater than the second temperature difference threshold and less than or equal to the first temperature difference threshold.

[0163] If so, proceed to step S308; otherwise, proceed to step S309.

[0164] S308. Control the air conditioning system to operate in the condenser air-cooling mode.

[0165] Control the evaporator unit 104 to operate, open the compressor bypass valve 1022, close the condenser bypass valve 1013 and the refrigerant pump bypass valve 1032, stop the operation of the compressor 1021, operate the condenser 1011 and the refrigerant pump 1031, and the control component 1061 of the coolant spraying unit is in a stopped working state.

[0166] When the heat exchange bypass valve 1055 is open, close the first coolant flow regulating valves 1052 and 1053, and stop the operation of the input and output pumps of each coolant supply subunit;

[0167] When the heat exchange bypass valve 1055 is closed, open the first coolant flow regulating valves 1052 and 1053, and operate the input and output pumps of at least one coolant supply subunit.

[0168] S309. Determine whether the difference between the preset temperature and the temperature of the coolant is greater than the third temperature difference threshold and less than or equal to the second temperature difference threshold.

[0169] If so, proceed to step S310; otherwise, proceed to step S311.

[0170] S310. Control the air conditioning system to operate in the condenser - coolant spraying mode.

[0171] Control the operation of the evaporator unit 104, open the compressor bypass valve 1022, close the condenser bypass valve 1013 and the refrigerant pump bypass valve 1032, stop the operation of the compressor 1021, and operate the condenser 1011 and the refrigerant pump 1031;

[0172] When the heat exchange bypass valve 1055 is open, the first coolant flow regulating valves 1052 and 1053 are closed. When the heat exchange bypass valve 1055 is closed, the first coolant flow regulating valves 1052 and 1053 are open.

[0173] When determining the operating conditions of the coolant spraying unit and related units, obtain the humidity of the environment where the coolant spraying unit is located;

[0174] When the humidity is within the preset humidity range and the outdoor ambient temperature is greater than the preset freezing pipe temperature threshold, control the control component 1061 of the coolant spraying unit to be in the working state. Correspondingly, control the input pump and output pump of at least one coolant supply subunit to operate;

[0175] When the humidity is outside the preset humidity range, and / or, the outdoor ambient temperature is less than or equal to the preset freezing pipe temperature threshold, control the control component 1061 of the coolant spraying unit to be in the stopped working state. When the first coolant flow regulating valves 1052 and 1053 are closed, the input pump and output pump of each coolant supply subunit stop running. When the first coolant flow regulating valves 1052 and 1053 are open, control the input pump and output pump of at least one coolant supply subunit to operate.

[0176] S311. Obtain the outdoor ambient temperature.

[0177] S312. Determine whether the outdoor ambient temperature is within the sixth preset ambient temperature range.

[0178] If so, go to step S313; otherwise, go to step S314.

[0179] S313. Control the air conditioning system to operate in the pressure pump mode.

[0180] Control the operation of the evaporator unit 104, close the compressor bypass valve 1022, the condenser bypass valve 1013 and the refrigerant pump bypass valve 1032, operate the compressor 1021, the condenser 1011 and the refrigerant pump 1031, and the control component 1061 of the coolant spraying unit is in the stopped working state;

[0181] When the heat exchange bypass valve 1055 is open, the first coolant flow regulating valves 1052 and 1053 are closed, and the input pump and output pump of each coolant supply subunit stop running;

[0182] When the heat exchange bypass valve 1055 is closed, the first coolant flow regulating valves 1052 and 1053 are opened, and the input pumps and output pumps of at least one coolant supply subunit operate.

[0183] Among them, the operating frequency of the compressor 1021 is within the first preset frequency range.

[0184] S314. Determine whether the outdoor ambient temperature is within the seventh preset ambient temperature range.

[0185] If so, proceed to step S315; otherwise, proceed to step S316.

[0186] S315. Control the air conditioning system to operate in the compressor air-cooled mode.

[0187] Control the evaporator unit 104 to operate, open the refrigerant pump bypass valve 1032, close the compressor bypass valve 1022 and the condenser bypass valve 1013, stop the operation of the refrigerant pump 1031, operate the compressor 1021 and the condenser 1011, and the control component 1061 of the coolant spraying unit is in the stopped working state;

[0188] When the heat exchange bypass valve 1055 is opened, the first coolant flow regulating valves 1052 and 1053 are closed, and the input pumps and output pumps of each coolant supply subunit stop operating;

[0189] When the heat exchange bypass valve 1055 is closed, the first coolant flow regulating valves 1052 and 1053 are opened, and the input pumps and output pumps of at least one coolant supply subunit operate;

[0190] Among them, the operating frequency of the compressor 1021 is within the second preset frequency range, and the minimum value of the second preset frequency range is greater than the maximum value of the first preset frequency range.

[0191] S316. When the return air temperature is greater than the emergency cooling threshold, control the air conditioning system to operate in the compressor - coolant spraying mode.

[0192] Control the evaporator unit 104 to operate, open the refrigerant pump bypass valve 1032, close the compressor bypass valve 1022 and the condenser bypass valve 1013, stop the operation of the refrigerant pump 1031, operate the compressor 1021, the condenser 1011 and the input pumps and output pumps of at least one coolant supply subunit, and the control component 1061 of the coolant spraying unit is in the working state;

[0193] When the heat exchange bypass valve 1055 is opened, the first coolant flow regulating valves 1052 and 1053 are closed;

[0194] When the heat exchange bypass valve 1055 is closed, the first coolant flow regulating valves 1052 and 1053 are opened;

[0195] Among them, the operating frequency of the compressor 1021 is within the third preset frequency range, and the minimum value of the third preset frequency range is greater than or equal to the minimum value of the second preset frequency range.

[0196] It should be noted that during the operation from step S306 to step S315, when the return air temperature meets the conditions of this step, the operation process of other steps is interrupted and this step is entered.

[0197] In the above technical solution, based on the various heat exchange units included in the air conditioning system, multiple working modes are set. The controller determines the machine room temperature according to the return air temperature of the evaporator fan, and determines the appropriate operation mode of the air conditioning system according to the temperature of the coolant stored in the coolant supply unit and the ambient temperature, ensuring the stability and energy saving of the operation of the air conditioning system.

[0198] Based on the above air conditioning architecture and multiple working modes, the present application provides an energy efficiency evaluation method for an air conditioning system. The schematic flow diagram of the energy efficiency evaluation method is as Figure 7 shown, including:

[0199] S401. Statistically analyze the temperature distribution range of the coolant available to the air conditioning system within a preset time period.

[0200] Among them, the air conditioner uses the coolant to cool down. The coolant includes natural water or other coolants suitable for environmental protection standards.

[0201] In one embodiment, if the preset time period is one year, the current energy efficiency evaluation method is an annual energy efficiency evaluation method; if the preset time period is one quarter, the current energy efficiency evaluation method is an energy efficiency evaluation method for a certain quarter.

[0202] The controller samples the temperature of the available coolant through a temperature sensor and determines the number of days at each temperature.

[0203] S402. Within the preset time period, statistically analyze the time periods when the coolant is at multiple target temperatures and the energy efficiency ratio of the air conditioning system in each time period.

[0204] The temperature distribution range of the coolant includes multiple target temperatures.

[0205] In one embodiment, based on a preset number of divisions, the temperature distribution range of the available coolant is divided (e.g., evenly divided, divided in different proportions) to obtain multiple sub-ranges of temperature distribution. For each sub-range of temperature distribution, the median value of the sub-range of temperature distribution is determined as the target temperature, and the period during which the temperature of the available coolant is within the sub-range of temperature distribution is determined as the period during which the available coolant is at the target temperature. For example, if the preset number of divisions is 5, the determined temperature distribution range is divided according to a preset rule, and the dates when the temperature is within each divided temperature segment are determined respectively according to the temperature distribution state within the preset period.

[0206] Based on the periods determined above with the preset number of divisions, the cooling capacity of the air-conditioning system in each sub-range of temperature distribution and the input power of each unit in the air-conditioning system are obtained. The input power of each unit in the air-conditioning system includes the input power of the compressor, the input power of the refrigerant pump, the input power of the coolant pump, and the input power of the condenser fan. Among them, the coolant pump includes the input pump, output pump, and coolant spray pump of the operating coolant supply sub-unit.

[0207] For each target temperature, the quotient obtained by dividing the corresponding cooling capacity by the sum of the input powers of each unit is determined as the energy efficiency ratio of the air-conditioning system at the target temperature.

[0208] The corresponding energy efficiency ratio formula is:

[0209]

[0210] Among them, Q0 represents the cooling capacity of the air-conditioning system, P c represents the input power of the compressor, P P1 represents the input power of the refrigerant pump, P P2 represents the input power of the coolant pump, P f represents the input power of the condenser fan.

[0211] And the energy efficiency ratio corresponds one-to-one with the periods of the preset number of divisions.

[0212] If the preset number of divisions is 5, then the number of energy efficiency ratios determined for different periods is also 5.

[0213] S403. Based on the periods during which the coolant is at each target temperature and the preset period, calculate the energy efficiency ratio of the coolant at each target temperature.

[0214] Among them, multiple energy efficiency ratios correspond one-to-one with multiple energy efficiency rates.

[0215] In one embodiment, the number of days included in the period of the target temperature divided by the total number of days within the preset period is the energy efficiency ratio corresponding to the target temperature.

[0216] S404. Determine the sum of the products of the energy efficiency ratios of multiple target temperatures and the corresponding energy efficiency ratios as the comprehensive energy efficiency ratio of the air-conditioning system during a preset period.

[0217] The formula for the comprehensive energy efficiency ratio is:

[0218] AEER = Ta × EERa + Tb × EERb + Tc × EERc + Td × EERd + Te × EERe,

[0219] where AEER is the comprehensive energy efficiency ratio during the preset period, Ta is the energy efficiency ratio corresponding to the first target temperature, that is, the proportion of the number of days in the temperature range corresponding to the first target temperature to the total number of days; EERa is the energy efficiency ratio corresponding to the first target temperature; Tb is the energy efficiency ratio corresponding to the second target temperature, EERb is the energy efficiency ratio corresponding to the second target temperature; Tc is the energy efficiency ratio corresponding to the third target temperature, EERc is the energy efficiency ratio corresponding to the third target temperature; Td is the energy efficiency ratio corresponding to the fourth target temperature, EERd is the energy efficiency ratio corresponding to the fourth target temperature; Te is the energy efficiency ratio corresponding to the fifth target temperature, and EERe is the energy efficiency ratio corresponding to the fifth target temperature.

[0220] Among them, the first to fifth target temperatures are the target temperatures determined for each temperature segment after dividing the temperature distribution range of the available water source into 5 temperature segments.

[0221] The higher the calculated energy efficiency ratio, the higher the utilization rate of the energy supply and the more energy-efficient.

[0222] In the above technical solution, through the above energy efficiency evaluation method, in the scenario of using groundwater or lake water as the refrigerant, the energy utilization situation of the air conditioner can be evaluated more comprehensively, and the evaluation accuracy can be improved.

[0223] Figure 8 This is a schematic structural diagram of an operation control device provided by the present application according to an embodiment. The operation control device 400 includes an acquisition module 401 and a processing module 402, where

[0224] The acquisition module 401 is used to acquire the return air temperature and the preset temperature of the evaporator unit.

[0225] The processing module 402 is used to control the operation of the air-conditioning system in the corresponding working mode based on the return air temperature and the preset temperature;

[0226] The working modes include an idle mode, a heat exchange mode, a condenser air-cooling mode, a condenser-coolant spraying mode, a pressure pump mode, a compressor air-cooling mode, or a compressor-coolant spraying mode.

[0227] Figure 9Schematic structural diagram of a controller provided according to an embodiment of the present application. Among them, the controller 500 includes a memory 501 and a processor 502. The memory 501 is used to store computer instructions executable by the processor. This memory 501 may include high-speed random access memory (Random Access Memory, RAM), and may also include non-volatile storage (Non-Volatile Memory, NVM), such as at least one disk memory, and may also be a USB flash drive, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disc, etc.

[0228] When the processor 502 executes the computer instructions, it implements each step in the operation control method with the controller as the execution entity in the above-mentioned embodiment. Specifically, reference can be made to the relevant descriptions in the foregoing method embodiments. This processor 502 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific IntegratedCircuit, ASIC), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly embodied as being executed and completed by a hardware processor, or can be executed and completed by a combination of hardware and software modules in the processor.

[0229] Optionally, the above-mentioned memory 501 may be either independent or integrated with the processor 502. When the memory 501 is independently provided, the controller 500 further includes a bus for connecting the memory 501 and the processor 502. This bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0230] The embodiment of the present application also provides a computer-readable storage medium. Computer instructions are stored in the computer-readable storage medium. When the processor executes the computer instructions, each step in the operation control method in the above-mentioned embodiment is implemented.

[0231] The embodiment of the present application also provides a computer program product, including computer instructions, which implement each step of the operation control method in the above embodiment when executed by a processor.

[0232] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0233] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. An air conditioning system, characterized in that, Including: An evaporator unit, a compressor unit, a coolant heat exchange unit, a condenser unit, a refrigerant pump unit, a coolant supply unit, and a coolant spraying unit; the coolant heat exchange unit is provided with a coolant input end, a coolant output end, a refrigerant input end, and a refrigerant output end; The evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, the condenser unit, and the refrigerant pump unit are connected through a first pipeline to form a first closed-loop circuit, and a refrigerant is provided in the first pipeline; The coolant supply unit, the coolant input end, and the coolant output end are connected through a second pipeline to form a second closed-loop circuit, and a coolant is provided in the second pipeline; The coolant supply unit and the coolant spraying unit are connected through a third pipeline to form a third closed-loop circuit, and the coolant is provided in the third pipeline; the coolant spraying unit is used for dissipating heat from the condenser unit.

2. The air-conditioning system according to claim 1, characterized in that, The evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, the condenser unit, and the refrigerant pump unit are connected through a first pipeline to form a first closed-loop circuit, including: After the evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, and the refrigerant pump unit are sequentially connected through the first pipeline, the input end of the condenser unit is connected to the refrigerant input end, and the output end of the condenser unit is connected to the refrigerant output end to form the first closed-loop circuit.

3. The air-conditioning system according to claim 1 or 2, characterized in that, The coolant heat exchange unit includes a heat exchanger, a heat exchange control valve, and a first coolant flow regulating valve; The heat exchanger is provided with a first end, a second end, a third end, and a fourth end; The first end of the heat exchanger is connected to the refrigerant input end through the first pipeline, and the second end of the heat exchanger is connected to the refrigerant output end through the first pipeline; The third end of the heat exchanger serves as the coolant input end, and the fourth end of the heat exchanger serves as the coolant output end; The heat exchange control valve is disposed on the first pipeline between the first end of the heat exchanger and the refrigerant input end, or is disposed on the first pipeline between the second end of the heat exchanger and the refrigerant output end; The first coolant flow regulating valve is disposed on the second pipeline.

4. The air-conditioning system according to claim 1 or 2, characterized in that, The condenser unit includes a condenser and a condenser control valve; The condenser and the condenser control valve are connected in series.

5. The air-conditioning system according to claim 1, characterized in that, The evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, the condenser unit, and the refrigerant pump unit are connected through a first pipeline to form a first closed-loop circuit, including: The evaporator unit, the compressor unit, the refrigerant input end, the refrigerant output end, the condenser unit, and the refrigerant pump unit are sequentially connected through the first pipeline to form the first closed-loop circuit.

6. The air-conditioning system according to claim 1 or 5, characterized in that, The coolant heat exchange unit includes a heat exchanger, a heat exchange bypass valve, and a first coolant flow regulating valve; The heat exchanger is provided with a first end, a second end, a third end, and a fourth end; After the first end of the heat exchanger is connected to the input end of the heat exchange bypass valve, it serves as the refrigerant input end; After the second end of the heat exchanger is connected to the output end of the heat exchange bypass valve, it serves as the refrigerant output end; The third end of the heat exchanger serves as the coolant input end, and the fourth end of the heat exchanger serves as the coolant output end; The first coolant flow regulating valve is arranged on the second pipeline.

7. The air conditioning system according to claim 1 or 5, characterized in that, The condenser unit includes a condenser and a condenser bypass valve; The condenser and the condenser bypass valve are connected in parallel.

8. The air conditioning system according to claim 1, wherein The coolant supply unit includes at least one coolant supply sub-unit; The input ends of the coolant supply sub-units are connected as the input end of the coolant supply unit, and the output ends of the coolant supply sub-units are connected as the output end of the coolant supply unit; Each coolant supply sub-unit includes a coolant storage unit, an input pipeline, an output pipeline, an input pump arranged on the input pipeline, and an output pump arranged on the output pipeline; one end of the input pipeline serves as the input end of the coolant supply sub-unit, and the other end is placed inside the coolant storage unit, one end of the output pipeline serves as the output end of the coolant supply sub-unit, and the other end is placed inside the coolant storage unit; The input pump is used to drive the input pipeline to discharge the coolant into the coolant storage unit; The output pump is used to drive the output pipeline to input the coolant provided by the coolant storage unit into the second pipeline.

9. The air-conditioning system according to claim 1, wherein The coolant spraying unit includes a coolant spraying device and a control component, and the control component is arranged on the input pipeline or the output pipeline of the coolant spraying device; The control component includes a coolant spraying pump and / or a second coolant flow regulating valve.

10. The air conditioning system according to claim 1, characterized in that, The compressor unit includes a compressor and a compressor bypass valve, and the refrigerant pump unit includes a refrigerant pump and a refrigerant pump bypass valve; The compressor and the compressor bypass valve are connected in parallel; The refrigerant pump and the refrigerant pump bypass valve are connected in parallel.

11. The air conditioning system according to claim 1, characterized in that, The air conditioning system further includes a temperature sensor, a humidity sensor and a controller, and the controller is connected to the evaporator unit, the compressor unit, the coolant heat exchange unit, the condenser unit, the refrigerant pump unit, the coolant supply unit, the coolant spraying unit, the temperature sensor, and the humidity sensor; The temperature sensor is used to sample the return air temperature of the evaporator unit, the temperature of the coolant in the coolant supply unit or the outdoor ambient temperature; The humidity sensor is used to sample the humidity of the environment where the coolant spraying unit is located; The controller is used to control the operating states of the compressor unit, the coolant heat exchange unit, the condenser unit, the refrigerant pump unit, the coolant supply unit, and the coolant spraying unit according to the outdoor ambient temperature and the temperature of the coolant when the return air temperature and the preset temperature meet the preset refrigeration conditions.

12. An operating control method for an air conditioning system, the method is applied to the air conditioning system as claimed in claim 1, and the method includes: Obtain the return air temperature of the evaporator unit and the preset temperature; Based on the return air temperature and the preset temperature, adjust the air conditioning system to operate in the corresponding working mode; The working modes include an idle mode, a heat exchange mode, a condenser air cooling mode, a condenser-coolant spraying mode, a pressure pump mode, a compressor air cooling mode, or a compressor-coolant spraying mode.

13. The operation control method according to claim 12, characterized in that, Based on the return air temperature and the preset temperature, regulating the working mode of the air conditioning system includes: When the difference between the return air temperature and the preset temperature is less than a first temperature difference, controlling the air conditioning system to operate in the idle mode; When the difference between the return air temperature and the preset temperature is greater than or equal to the first temperature difference, controlling the air conditioning system to operate in a non-idle mode; The non-idle mode includes the heat exchange mode, the condenser air cooling mode, the condenser-coolant spraying mode, the pressure pump mode, the compressor air cooling mode, or the compressor-coolant spraying mode.

14. The operating control method according to claim 13, characterized in that Controlling the air conditioning system to operate in the idle mode includes: Controlling the evaporator unit to operate, closing the compressor bypass valve, the refrigerant pump bypass valve, the condenser valve, the heat exchange valve, and the first coolant flow regulating valve, stopping the operation of the compressor, the refrigerant pump, the condenser, the input pump and the output pump of each coolant supply subunit, and the control component of the coolant spraying unit being in a stopped working state; The heat exchange valve includes a heat exchange bypass valve or a heat exchange control valve, and the condenser valve includes a condenser bypass valve or a condenser control valve.

15. The operation control method according to claim 14, wherein Controlling the control component of the coolant spraying unit to be in a stopped working state includes: When the control component of the coolant spraying unit includes a coolant spraying pump, controlling the coolant spraying pump to stop operating; When the control component of the coolant spraying unit includes a second coolant flow regulating valve, controlling the second coolant flow regulating valve to close.

16. The operation control method according to claim 13, wherein When the difference between the return air temperature and the preset temperature is greater than or equal to the first temperature difference, controlling the air conditioning system to operate in a non-idle mode includes: When the difference between the return air temperature and the preset temperature is greater than or equal to the first temperature difference, obtaining the temperature of the coolant provided by the coolant supply unit; Based on the preset temperature and the temperature of the coolant, determining the operating mode of the air conditioning system.

17. The operation control method according to claim 16, characterized in that, Based on the preset temperature and the temperature of the coolant, determining the operating mode of the air conditioning system includes: When the difference between the preset temperature and the temperature of the coolant is greater than a first temperature difference threshold, controlling the air conditioning system to operate in the heat exchange mode; When the difference between the preset temperature and the temperature of the coolant is less than or equal to the first temperature difference threshold, controlling the air conditioning system to operate in a non-heat exchange mode; The non-heat exchange mode includes the condenser air cooling mode, the condenser-coolant spraying mode, the pressure pump mode, the compressor air cooling mode, or the compressor-coolant spraying mode.

18. The operation control method according to claim 17, wherein Controlling the air conditioning system to operate in the heat exchange mode includes: Controlling the evaporator unit to operate, opening the compressor bypass valve and the first coolant flow regulating valve, closing the refrigerant pump bypass valve, stopping the operation of the compressor and the condenser, operating the refrigerant pump and the input pump and the output pump of at least one coolant supply subunit, and the control component of the coolant spraying unit being in a stopped working state; When the air conditioning system includes a heat exchange control valve and a condenser control valve, the heat exchange control valve is opened and the condenser control valve is closed; When the air conditioning system includes a heat exchange bypass valve and a condenser bypass valve, the heat exchange bypass valve is closed and the condenser bypass valve is opened.

19. The operation control method according to claim 18, wherein In the air conditioning system, the input end of the condenser unit is connected to the refrigerant input end of the coolant heat exchange unit, and the output end of the condenser unit is connected to the refrigerant output end of the coolant heat exchange unit; When the difference between the preset temperature and the temperature of the coolant is less than or equal to the first temperature difference threshold, control the air conditioning system to operate in other modes, including: Obtain the outdoor ambient temperature; When the outdoor ambient temperature is within the first preset ambient temperature range, control the air conditioning system to operate in the condenser air-cooled mode; When the outdoor ambient temperature is within the second preset ambient temperature range, control the air conditioning system to operate in the condenser-coolant spraying mode; the minimum value of the second preset ambient temperature range is greater than the maximum value of the first preset ambient temperature range; When the outdoor ambient temperature is within the third preset ambient temperature range, control the air conditioning system to operate in the pressure pump mode; the minimum value of the third preset ambient temperature range is greater than the maximum value of the second preset ambient temperature range; When the outdoor ambient temperature is within the fourth preset ambient temperature range, control the air conditioning system to operate in the compressor air-cooled mode; the minimum value of the fourth preset ambient temperature range is greater than the maximum value of the third preset ambient temperature range.

20. The operating control method according to claim 19, wherein Controlling the air conditioning system to operate in the condenser air-cooled mode includes: Controlling the evaporator unit to operate, the compressor bypass valve and the condenser control valve are opened, the heat exchange control valve, the refrigerant pump bypass valve and the first coolant flow regulating valve are closed, the compressor and the input pumps and output pumps of each of the coolant supply sub-units stop running, the condenser and the refrigerant pump run, and the control component of the coolant spraying unit is in a stopped working state.

21. The operating control method according to claim 19, characterized in that, Controlling the air conditioning system to operate in the condenser-coolant spraying mode includes: Controlling the evaporator unit to operate, the compressor bypass valve and the condenser control valve are opened, the heat exchange control valve, the refrigerant pump bypass valve and the first coolant flow regulating valve are closed, the compressor stops running, the condenser, the refrigerant pump and the input pumps and output pumps of at least one of the coolant supply sub-units run; Obtain the humidity of the environment where the coolant spraying unit is located; When the humidity is within the preset humidity range and the outdoor ambient temperature is greater than the preset freezing pipe temperature threshold, control the control component of the coolant spraying unit to be in a working state; When the humidity is outside the preset humidity range, and / or, the outdoor ambient temperature is less than or equal to the preset freezing pipe temperature threshold, control the control component of the coolant spraying unit to be in a stopped working state.

22. The operation control method according to claim 21, wherein Controlling the input pumps and output pumps of at least one of the coolant supply sub-units to run includes: Obtain the temperature of the coolant in each of the coolant supply sub-units and the liquid level value of the coolant; The input pump and output pump of the coolant supply subunit that controls the liquid level value of the coolant to be within the available liquid level range and the temperature of the coolant to be within the available temperature range operate.

23. The operating control method according to claim 19, wherein Controlling the air conditioning system to operate in the pressure pump mode includes: Controlling the evaporator unit to operate, opening the condenser control valve, closing the compressor bypass valve, heat exchange control valve, refrigerant pump bypass valve, and first coolant flow control valve, stopping the operation of the input pump and output pump of each coolant supply subunit, operating the compressor, condenser, and refrigerant pump, and the control component of the coolant spraying unit being in a stopped working state; Wherein, the operating frequency of the compressor is within the first preset frequency range.

24. The operating control method according to claim 23, wherein Controlling the air conditioning system to operate in the compressor air-cooled mode includes: Controlling the evaporator unit to operate, opening the refrigerant pump bypass valve and condenser control valve, closing the compressor bypass valve, heat exchange control valve, and first coolant flow control valve, stopping the operation of the refrigerant pump and the input pump and output pump of each coolant supply subunit, operating the compressor and condenser, and the control component of the coolant spraying unit being in a stopped working state; Wherein, the operating frequency of the compressor is within the second preset frequency range, and the minimum value of the second preset frequency range is greater than the maximum value of the first preset frequency range.

25. The method according to any one of claims 19 to 24, characterized in that, The method further includes: When the return air temperature is greater than the emergency cooling threshold, controlling the air conditioning system to operate in the compressor-coolant spraying mode; The emergency cooling threshold is less than or equal to the high temperature warning threshold.

26. The operation control method according to claim 25, wherein Controlling the air conditioning system to operate in the compressor-coolant spraying mode includes: Controlling the evaporator unit to operate, opening the refrigerant pump bypass valve and condenser control valve, closing the compressor bypass valve, heat exchange control valve, and first coolant flow control valve, stopping the operation of the refrigerant pump, operating the compressor, condenser, and the input pump and output pump of at least one coolant supply subunit, and the control component of the coolant spraying unit being in a working state; Wherein, the operating frequency of the compressor is within the third preset frequency range, and the minimum value of the third preset frequency range is greater than or equal to the minimum value of the second preset frequency range.

27. The operation control method according to claim 18, wherein In the air conditioning system, the input end of the condenser unit is connected to the refrigerant output end of the coolant heat exchange unit, the output end of the condenser unit is connected to the input end of the refrigerant pump unit, and the refrigerant input end of the coolant heat exchange unit is connected to the output end of the compressor unit; When the difference between the preset temperature and the temperature of the coolant is less than or equal to the first temperature difference threshold, controlling the air conditioning system to operate in other modes, including: When the difference between the preset temperature and the temperature of the coolant is greater than the second temperature difference threshold and less than or equal to the first temperature difference threshold, controlling the air conditioning system to operate in the condenser air-cooled mode; When the difference between the preset temperature and the temperature of the coolant is greater than the third temperature difference threshold and less than or equal to the second temperature difference threshold, controlling the air conditioning system to operate in the condenser-coolant spraying mode; When the difference between the preset temperature and the temperature of the coolant is less than or equal to the third temperature difference threshold, obtain the outdoor ambient temperature and regulate the operating mode of the air conditioning system based on the outdoor ambient temperature.

28. The operation control method according to claim 27, wherein Controlling the air conditioning system to operate in the condenser air-cooled mode includes: Controlling the evaporator unit to operate, opening the compressor bypass valve, closing the condenser bypass valve and the refrigerant pump bypass valve, stopping the compressor from operating, running the condenser and the refrigerant pump, and the control component of the coolant spraying unit is in a stopped working state; When the heat exchange bypass valve is open, the first coolant flow regulating valve is closed, and the input pumps and output pumps of each coolant supply subunit stop running; When the heat exchange bypass valve is closed, the first coolant flow regulating valve is opened, and the input pumps and output pumps of at least one of the coolant supply subunits run.

29. The operation control method according to claim 27, wherein Controlling the air conditioning system to operate in the condenser - coolant spraying mode includes: Controlling the evaporator unit to operate, opening the compressor bypass valve, closing the condenser bypass valve and the refrigerant pump bypass valve, stopping the compressor from operating, and running the condenser and the refrigerant pump; When the heat exchange bypass valve is open, the first coolant flow regulating valve is closed; When the heat exchange bypass valve is closed, the first coolant flow regulating valve is opened.

30. The operation control method according to claim 29, characterized in that, The method further includes: Obtaining the humidity of the environment where the coolant spraying unit is located; When the humidity is within the preset humidity range and the outdoor ambient temperature is greater than the preset freezing pipe temperature threshold, controlling the control component of the coolant spraying unit to be in the working state, and controlling the input pumps and output pumps of at least one of the coolant supply subunits to run; When the humidity is outside the preset humidity range, and / or, the outdoor ambient temperature is less than or equal to the preset freezing pipe temperature threshold, controlling the control component of the coolant spraying unit to be in the stopped working state. When the first coolant flow regulating valve is closed, the input pumps and output pumps of each coolant supply subunit stop running. When the first coolant flow regulating valve is opened, controlling the input pumps and output pumps of at least one of the coolant supply subunits to run.

31. The operation control method according to claim 27, wherein, Regulating the operating mode of the air conditioning system based on the outdoor ambient temperature includes: When the outdoor ambient temperature is within the sixth preset ambient temperature range, controlling the air conditioning system to operate in the pressure pump mode; When the outdoor ambient temperature is within the seventh preset ambient temperature range, controlling the air conditioning system to operate in the compressor air-cooled mode; the minimum value of the seventh preset ambient temperature range is greater than the maximum value of the sixth preset ambient temperature range.

32. The operating control method according to claim 31, wherein Controlling the air conditioning system to operate in the pressure pump mode includes: Controlling the evaporator unit to operate, closing the compressor bypass valve, the condenser bypass valve and the refrigerant pump bypass valve, running the compressor, the condenser and the refrigerant pump, and the control component of the coolant spraying unit is in the stopped working state; When the heat exchange bypass valve is open, the first coolant flow regulating valve is closed, and the input pumps and output pumps of each coolant supply subunit stop running; When the heat exchange bypass valve is closed, the first coolant flow regulating valve is opened, and the input pumps and output pumps of at least one of the coolant supply subunits run; Among them, the operating frequency of the compressor is within a first preset frequency range.

33. The operation control method according to claim 32, characterized in that, Controlling the air-conditioning system to operate in the air-cooled mode of the compressor includes: Controlling the evaporator unit to operate, opening the refrigerant pump bypass valve, closing the compressor bypass valve and the condenser bypass valve, stopping the operation of the refrigerant pump, operating the compressor and the condenser, and the control component of the coolant spraying unit being in a stopped working state; When the heat exchange bypass valve is opened, the first coolant flow regulating valve is closed, and the input pump and the output pump of each coolant supply sub-unit stop operating; When the heat exchange bypass valve is closed, the first coolant flow regulating valve is opened, and the input pump and the output pump of at least one of the coolant supply sub-units operate; Among them, the operating frequency of the compressor is within a second preset frequency range, and the minimum value of the second preset frequency range is greater than the maximum value of the first preset frequency range.

34. The operation control method according to any one of claims 27 to 33, characterized in that The method further includes: When the return air temperature is greater than the emergency cooling threshold, controlling the air-conditioning system to operate in the compressor-coolant spraying sub-mode; The emergency cooling threshold is less than or equal to the high temperature warning threshold.

35. The operation control method according to claim 33, wherein Controlling the air-conditioning system to operate in the compressor-coolant spraying mode includes: Controlling the evaporator unit to operate, opening the refrigerant pump bypass valve, closing the compressor bypass valve and the condenser bypass valve, stopping the operation of the refrigerant pump, operating the compressor, the condenser and the input pump and the output pump of at least one of the coolant supply sub-units, and the control component of the coolant spraying unit being in a working state; When the heat exchange bypass valve is opened, the first coolant flow regulating valve is closed; When the heat exchange bypass valve is closed, the first coolant flow regulating valve is opened; Among them, the operating frequency of the compressor is within a third preset frequency range, and the minimum value of the third preset frequency range is greater than or equal to the minimum value of the second preset frequency range.

36. An energy efficiency evaluation method for an air conditioning system, the method being applied to the air conditioning system as claimed in claim 1, characterized in that, The method includes: Statistically analyzing the temperature distribution range of the coolant available to the air-conditioning system within a preset time period; wherein, the air-conditioning system uses the coolant for cooling; Within the preset time period, statistically analyzing the time periods when the coolant is at multiple target temperatures and the energy efficiency ratio of the air-conditioning system in each time period; the temperature distribution range of the coolant includes the multiple target temperatures; Based on the time periods when the coolant is at each target temperature and the preset time period, calculating the energy efficiency ratio of the coolant at each of the target temperatures; among them, multiple energy efficiency ratios correspond one-to-one with multiple energy efficiency ratios; Determining the sum of the products of the energy efficiency ratios of the multiple target temperatures and the corresponding energy efficiency ratios as the comprehensive energy efficiency ratio of the air-conditioning system within the preset time period.

37. The energy efficiency evaluation method according to claim 36, wherein Statistically analyzing the time periods when the coolant is at multiple target temperatures and the energy efficiency ratio of the air-conditioning system in each time period includes: Based on a preset division rule, dividing the temperature distribution range of the coolant to obtain multiple temperature distribution sub-ranges; the preset division rule includes a preset division quantity; For each of the temperature distribution sub-ranges, determining the median value of the temperature distribution sub-range as the target temperature, and determining the time period when the temperature of the coolant is within the temperature distribution sub-range as the time period when the coolant is at the target temperature; Obtain the cooling capacity of the air conditioning system in each of the temperature distribution sub - ranges and the input power of the air conditioning system; Determine the energy efficiency ratio of the air conditioning system at the target temperature corresponding to the temperature distribution sub - range by dividing the quotient of the cooling capacity corresponding to each temperature distribution sub - range by the input power.

38. A motion control device for an air conditioning system, characterized in that, Comprising: An acquisition module, configured to acquire the return air temperature of the evaporator unit and a preset temperature; A processing module, configured to control the operation of the air conditioning system in a corresponding working mode based on the return air temperature and the preset temperature; The working modes include an idle mode, a heat exchange mode, a condenser air cooling mode, a condenser - coolant spraying mode, a pressure pump mode, a compressor air cooling mode, or a compressor - coolant spraying mode.

39. A controller, characterized in that, Comprising: A processor and a memory communicatively connected to the processor; The memory stores computer - executable instructions; When executing the computer - executable instructions, the processor is configured to implement the method according to any one of claims 12 to 35, or claims 36 or 37.

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