Spraying type air-cooled chiller unit and control method and device

Abstract

The invention provides a spraying type air-cooled chiller unit and a control method and device. The control method comprises the steps that spraying water is heated through a compressor exhaust heat exchange module and then sprayed; the actual temperature of current spraying water and the air temperature before and after spraying are collected through a temperature monitoring module, and the actual water flow of the spraying water is collected through a water flow monitoring module; the proportion of water flowing through the compressor exhaust heat exchange module is adjusted according to the spraying water temperature; the spraying water evaporation capacity is calculated according to the air temperature data before and after spraying, and the spraying water flow is adjusted through the intelligent control module and the water flow monitoring module based on the spraying water evaporation capacity. By judging the evaporation state of the water mist, the temperature of the spraying water is increased through the waste heat of the compressor, and the evaporation efficiency of the spraying water is improved.

Description

Technical Field

[0001] This invention relates to the technical field of chiller units, and more specifically, to a spray-type air-cooled chiller unit, control method, and device. Background Technology

[0002] In spray-type air-cooled chiller units, water is sprayed onto the surface of the cooling coils through nozzles, exchanging heat with the air to achieve cooling. However, existing spray systems have the following problems: 1. Insufficient evaporation of water mist leads to water waste and affects the overall energy efficiency of the system; 2. Prolonged contact between the fins and spray water can easily cause corrosion of the fins and other equipment; 3. Water mist forms a water film on the fins, creating resistance and resulting in excessively high fan energy consumption and low overall unit energy efficiency; 4. The waste heat from the compressor is not effectively utilized, resulting in energy waste.

[0003] Therefore, there is an urgent need for a spray-type air-cooled chiller unit technology that can accelerate the evaporation of spray water, ensure sufficient evaporation of water mist, and prevent the fins from coming into contact with water mist. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a spray-type air-cooled chiller unit and control method, which can solve the technical problems in existing technologies where spray water evaporation cannot guarantee sufficient water mist evaporation and easily affects the energy consumption of the fan.

[0005] The present invention adopts the following technical solution.

[0006] A spray-type air-cooled chiller unit includes: a water spray system, a compressor, a compressor exhaust heat exchange module, a water temperature regulating device, a temperature monitoring module, a water flow monitoring module, and an intelligent control module; The water temperature regulating device is connected to the water spraying system to distribute the water flow. The water spraying system sprays water into the air before the condenser inlet. The compressor exhaust heat exchange module is located at the compressor exhaust port. The temperature monitoring module collects the air temperature and spray water temperature before and after spraying in real time. The water flow monitoring module collects the spray water flow in real time. The intelligent control module adjusts the spray water flow according to the air temperature and spray water temperature.

[0007] Preferably, the water spraying system includes a spray pump, a spray pipe, and nozzles. The spray pump delivers water through the spray pipe to the nozzles, and sprays the water through the nozzles into the air before the condenser inlet.

[0008] Preferably, the water temperature regulating device is a three-way valve, which is used to automatically adjust the proportion of water flowing through the compressor exhaust heat exchange module according to the spray water temperature, so that the water temperature is at the optimal evaporation temperature; The water temperature regulating device is connected to the spray water pump, the compressor exhaust heat exchange module and the nozzle respectively, and is used to distribute the spray water from the spray water pump to the nozzle and the compressor exhaust heat exchange module.

[0009] This invention also proposes a control method for a spray-type air-cooled chiller unit, comprising the following steps: Water is pumped into the water spray system, and the water is heated by the compressor exhaust heat exchange module before being sprayed. The actual temperature of the spray water and the air temperature before and after spraying are collected through the temperature monitoring module. The proportion of water flowing through the compressor exhaust heat exchange module is adjusted according to the spray water temperature; The amount of water evaporated from the spray system is calculated based on the air temperature data before and after spraying, and the water flow rate is adjusted based on the amount of water evaporated through the intelligent control module and the water flow monitoring module.

[0010] Preferably, the proportion of water flowing through the compressor exhaust heat exchange module is... The calculation formula is as follows:

[0011] in, The target temperature for the spray water, This represents the actual temperature of the spray water. This refers to the compressor discharge temperature. , These represent the maximum and minimum proportions of water flowing through the compressor exhaust heat exchange module, respectively.

[0012] Preferably, the target temperature of the spray water The calculation formula is as follows:

[0013] in, The ambient air wet-bulb temperature. This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

[0014] Preferably, the maximum proportion of water flowing through the compressor exhaust heat exchange module is... and minimum value They respectively satisfy:

[0015]

[0016] in, This refers to the actual water flow rate of the spray system. This represents the maximum water flow rate of the spray system.

[0017] Preferably, the amount of water evaporated during spraying is calculated based on air temperature data before and after spraying, specifically including: Calculate the theoretical evaporation rate Q evap : Q evap = m w ·h fg Calculate the actual evaporation rate Q air : Q air = m air · c p ·( T in T out ) in, m w For the quality of the spray water, h fg This represents the difference in enthalpy before and after evaporation. m air The air quality flowing through the condenser, c p The specific heat capacity of air at constant pressure. T in The air temperature before spraying. T out The air temperature after spraying.

[0018] Preferably, the spray water flow rate is adjusted according to the evaporation rate of the spray water via an intelligent control module and a water flow monitoring module, specifically including: Calculate the theoretical evaporation rate Q of the spray water evap Compared with the actual evaporation Q air The difference ΔQ: ΔQ=Q evap- Q air The formula for adjusting the spray water flow rate Q is as follows: Q = Q0 × (1 + k · ΔQ / Q) evap ) Where Q0 is the initial spray flow rate and k is the adjustment coefficient.

[0019] Preferably, the formula for calculating the adjustment coefficient k is as follows:

[0020] in, To adjust the baseline value of the parameter, This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

[0021] The present invention also proposes a control device for a spray-type air-cooled chiller unit, used to implement the control method for the spray-type air-cooled chiller unit, including: The spray unit uses a water pump to send water into the water spray system, and the water is sprayed after being heated. The data acquisition unit is used to collect the actual temperature of the spray water and the air temperature before and after spraying. The control unit includes adjusting the proportion of water flowing through the compressor exhaust heat exchange module according to the spray water temperature; calculating the spray water evaporation rate based on the air temperature data before and after spraying; and adjusting the spray water flow rate based on the spray water evaporation rate through the intelligent control module and the water flow monitoring module.

[0022] The beneficial effects of this invention are as follows: Compared with the prior art, this invention provides a spray-type air-cooled chiller unit and control method that utilizes the waste heat from compressor exhaust to increase water temperature, thereby enhancing the atomization and evaporation of spray water, and determines whether the water mist has completely evaporated based on the change in air temperature before and after spraying and the spray water flow rate. This solves the problem of unevaporated water mist in the condenser inlet air of existing spray systems, improves system operating efficiency, extends equipment life, and reduces energy consumption. This invention includes at least the following beneficial effects: 1. The spray water reduces the exhaust pressure by exchanging heat with the compressor exhaust, thus improving the compressor's COP (cooling capacity per unit shaft power). 2. This invention achieves real-time judgment of water mist evaporation state and dynamic control of spray parameters by comprehensively analyzing the changes in air temperature and spray water flow before and after spraying. 3. This invention adjusts the flow rate ratio of water through the compressor exhaust heat exchange module according to the air temperature change before and after spraying, and uses the waste heat of the compressor exhaust to enhance the atomization and evaporation of spray water, thus solving the problems of insufficient water mist evaporation, equipment corrosion and low overall energy efficiency in traditional spray-type air-cooled chiller units. 4. This invention adjusts the target temperature of the spray water by adjusting the ambient temperature, making the parameter more closely match the actual situation; 5. This invention adjusts the maximum and minimum proportions of water flowing through the compressor exhaust heat exchange module by adjusting the actual and maximum water flow rates of the sprayed water, thus making the parameter more closely match the actual situation. 6. This invention calculates the amount of spray water evaporation by measuring the air temperature before and after spraying, and judges the evaporation state by combining the actual evaporation amount. The spray water flow rate is adjusted according to different evaporation states to make evaporation more complete. 7. The control method of the present invention enables the spray water mist to evaporate completely, reducing the drift rate and saving water resources. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the spray-type air-cooled chiller unit in this invention; Figure 2 This is a flowchart of the control method for the spray-type air-cooled chiller unit in this invention; Figure 3 This is a flowchart of the proportional adjustment control of water flowing through the compressor exhaust heat exchange module in this invention; Figure 4 This is a flowchart illustrating the control process of adjusting the spray water flow rate based on the evaporation rate of the spray water in this invention. Figure 5 This is a structural diagram of the control device for the spray-type air-cooled chiller unit in this invention; Explanation of reference numerals in the attached figures: 1. Compressor; 2. Compressor exhaust heat exchange module; 3. Air-cooled condenser; 4. Expansion valve; 5. Evaporator; 6. Spray water pump; 7. Water flow monitoring module; 8. Water temperature regulating device; 9. Nozzle; 10. Temperature monitoring module; 11. Intelligent control module. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0025] Example 1 like Figure 1 As shown, the present invention proposes a spray-type air-cooled chiller unit, which includes: a water spray system, a compressor 1, a compressor exhaust heat exchange module 2, a water temperature regulating device 8, a temperature monitoring module 10, a water flow monitoring module 7, and an intelligent control module 11. The water temperature regulating device 8 is connected to the water spray system and is used to distribute the water flow. The water spray system sprays water into the air before the condenser inlet. The water spray system includes a spray water pump 6, a spray pipe and a nozzle 9. The spray water pump 6 sends water into the nozzle 9 through the spray pipe and sprays the water into the air before the condenser inlet through the nozzle 9.

[0026] The compressor 1, compressor exhaust heat exchange module 2, air-cooled condenser 3, expansion valve 4 and evaporator 5 together constitute the refrigeration system. The compressor exhaust heat exchange module 2, air-cooled condenser 3, expansion valve 4 and evaporator 5 are connected in this way. The function of expansion valve 4 is to throttle and reduce pressure, creating and maintaining the low pressure and low temperature state required for the normal operation of evaporator 5. Evaporator 5 is connected to compressor 1. Evaporator 5 is the device in the refrigeration system that directly generates the cooling effect.

[0027] The compressor exhaust heat exchange module 2 is located near the compressor exhaust port and is used to exchange heat between the high-temperature gas discharged from the compressor and water, thereby raising the water temperature and improving the evaporation efficiency. The water temperature regulating device 8 is connected to the spray water pump 6, the compressor exhaust heat exchange module 2, and the nozzles 9, respectively, and is used to distribute the spray water from the spray water pump 6 to the nozzles 9 and the compressor exhaust heat exchange module 2; specifically, the water temperature regulating device automatically adjusts the proportion of water flowing through the compressor exhaust heat exchange module according to the spray water temperature to ensure that the water temperature is at the optimal evaporation temperature; combined with Figure 1 For example, the water temperature regulating device 8 used in this invention is a three-way valve; The temperature monitoring module 10 is used to collect real-time data on the air temperature before and after spraying, and the spray water temperature in front of the nozzle. Water flow monitoring module 7 is used to collect sprinkler water flow data in real time; The intelligent control module 11 is used to dynamically adjust the water flow rate based on data such as spray water temperature, water flow rate, and air temperature to ensure that the water mist evaporates fully and to prevent the air at the condenser inlet from containing unevaporated water mist.

[0028] Example 2 like Figure 2 As shown, in response to the spray-type air-cooled chiller unit proposed in Example 1, this invention also proposes a control method for the spray-type air-cooled chiller unit, specifically including the following steps: Step 1, Water Circulation and Heat Exchange: Water is pumped into the water spray system. After being heated by the compressor exhaust heat exchange module 2, the water is sprayed. The increase in water temperature will increase the water vapor partial pressure difference and water molecule kinetic energy between the water and the air.

[0029] Step 2: Collect the actual temperature of the spray water, the compressor exhaust temperature, and the air temperature before and after spraying through the temperature monitoring module 10; The actual water flow rate of the spray system is collected by the water flow monitoring module 7. Step 3: Adjust the proportion of water flowing through the compressor exhaust heat exchange module 2 according to the spray water temperature; The amount of water evaporated during spraying is calculated based on the air temperature data before and after spraying, and the water flow rate is adjusted based on the amount of water evaporated through the intelligent control module 11 and the water flow monitoring module 7.

[0030] Specifically, when the spray water temperature is lower than the optimal evaporation temperature, the proportion of water flowing through the compressor exhaust heat exchange module is increased; when the spray water temperature is higher than the optimal evaporation temperature, the proportion of water flowing through the compressor exhaust heat exchange module is decreased. like Figure 3 As shown, the proportion α of water flowing through the compressor exhaust heat exchange module is dynamically adjusted according to the following formula:

[0031] Among them, T t The target temperature of the spray water is preset by the water spray system, for example, 35°C; T a The actual temperature of the spray water is obtained through real-time monitoring in step 2. T compr This refers to the compressor discharge temperature. , These represent the maximum and minimum proportions of water flowing through the compressor exhaust heat exchange module 2, respectively.

[0032] Preferably, the target temperature of the spray water The calculation formula is as follows:

[0033] in, The ambient air wet-bulb temperature. This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

[0034] The denominator of the proportional α calculation formula is used to ensure that even if the water temperature is low, there will be no excessive flow when the exhaust temperature is low.

[0035] The proportion α of water flowing through the compressor exhaust heat exchange module is adjusted by the water temperature regulating device 8. The specific adjustment logic of proportion α is as follows: Current actual temperature of the spray water T a If the spray water temperature is less than the target temperature Ttarget, it indicates that the water temperature is insufficient and the heat exchange efficiency needs to be improved. In this case, increase α to allow more water to flow through the exhaust heat exchange module. Current actual temperature of the spray water T a When the water temperature reaches or exceeds the target temperature Ttarget of the spray water, it indicates that the water temperature has reached the target. To avoid overheating, α is reduced at this time to bypass part of the water flow and prevent the water temperature from becoming too high.

[0036] When water flows through the compressor exhaust heat exchange module, it absorbs heat from the compressor exhaust. Although this increases the temperature of the spray water, the cooling effect on the air is slightly reduced. However, since the spray water absorbs heat from the compressor exhaust, it improves the condensation effect of the refrigeration system, thus effectively improving the system's energy efficiency.

[0037] Further preferred, , It can be set directly by those skilled in the art, or it can be calculated in the following way:

[0038]

[0039] in, This refers to the actual water flow rate of the spray system. This represents the maximum water flow rate of the spray system.

[0040] Furthermore, such as Figure 4 As shown, the spray water flow rate is adjusted based on the evaporation rate of the spray water through the intelligent control module 11 and the water flow monitoring module 7, specifically including: The amount of water evaporated from the spraying system is calculated based on air temperature data before and after spraying, specifically including: Calculate the theoretical evaporation rate Q evap : Q evap = m w ·h fg Calculate the actual evaporation rate Q air : Q air = m air · c p ·( T in T out ) in, m w For the quality of the spray water, h fg This represents the difference in enthalpy before and after evaporation. m air The air quality flowing through the condenser, c p The specific heat capacity of air at constant pressure. T in The air temperature before spraying. T out The temperature of the air after spraying is given. The mass of the sprayed water is calculated using the actual water flow rate, and the mass of the air flowing through the condenser is calculated using the operating frequency of the fan.

[0041] Calculate the theoretical evaporation rate Q of the spray water evap Compared with the actual evaporation Q air The difference ΔQ: ΔQ=Q evap- Q air Based on the theoretical evaporation rate Q of the spray water evap The spray water flow rate is adjusted and controlled based on the difference ΔQ, as follows: If ΔQ < Q evap *30% indicates that a large amount of water mist has not evaporated, posing a risk of liquid carryover. The water source needs to be cut off, and the control action at this time is to immediately stop the spraying. If Q evap *5%<ΔQ≤Q evap *30% indicates that the water mist still has a tendency to not evaporate, and the spray volume needs to be reduced to prevent this. At this time, the control action is to gradually reduce the spray volume to adjust. If Q evap * (-5%) < ΔQ ≤ Q evap *5% indicates good evaporation and no need to adjust the spray water flow rate; maintain the current spray water flow rate at this time. If ΔQ≤Q evap * (-5%) indicates that the air still has evaporation potential, and it is safe to increase the spray water flow rate. At this time, the control action is to gradually increase the spray water flow rate.

[0042] Specifically, based on the theoretical evaporation rate Q of the spray water evap Compared with the actual evaporation Q air The difference ΔQ is used to adjust the spray water flow rate Q by increasing or decreasing it. The formula for adjusting the spray water flow rate Q is as follows: Q = Q0 × (1 + k · ΔQ / Q) evap ) Where Q0 is the initial spray flow rate and k is the adjustment coefficient.

[0043] A further preferred formula for calculating the adjustment coefficient k is as follows:

[0044] in, To adjust the baseline value of the parameter, This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

[0045] Condenser inlet control: The above control measures ensure that there is no unevaporated water mist in the air at the condenser inlet, thus preventing water mist from adhering to the condenser. Water mist will accelerate condenser corrosion because it provides an electrolyte environment and dissolves corrosive substances, triggering electrochemical reactions, especially when there is salt, acid or dissimilar metal contact.

[0046] Example 3 like Figure 5 As shown, the present invention also proposes a control device for a spray-type air-cooled chiller unit, used to implement the control method for the spray-type air-cooled chiller unit proposed in Embodiment 2. The device includes: The spray unit uses a water pump to send water into the water spray system, and the water is sprayed after being heated. The data acquisition unit is used to collect the actual temperature of the spray water and the air temperature before and after spraying. The control unit includes adjusting the proportion of water flowing through the compressor exhaust heat exchange module 2 according to the spray water temperature; and calculating the amount of spray water evaporation based on the air temperature data before and after spraying, and adjusting the spray water flow rate through the intelligent control module 11 and the water flow monitoring module 7 based on the amount of spray water evaporation.

[0047] The beneficial effects of this invention are that, compared with the prior art, it achieves precise control of the water mist evaporation state through monitoring air temperature before and after spraying, monitoring spray water flow rate, the compressor exhaust heat exchange module, and the evaporation judgment logic of the intelligent control unit. It also utilizes the waste heat of the compressor to increase the spray water temperature and improve the spray water evaporation efficiency.

[0048] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0049] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0050] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0051] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A spray-type air-cooled chiller unit, characterized in that, include: Water spray system, compressor (1), compressor exhaust heat exchange module (2), water temperature regulating device (8), temperature monitoring module (10), water flow monitoring module (7) and intelligent control module (11). Among them, the water temperature regulating device (8) is connected to the water spraying system and is used to distribute the water flow direction. The water spraying system sprays water into the air before the condenser inlet. The compressor exhaust heat exchange module (2) is set at the exhaust port of the compressor (1). The temperature monitoring module (10) collects the air temperature and spray water temperature before and after spraying in real time. The water flow monitoring module (7) is used to collect the spray water flow in real time. The intelligent control module (11) adjusts the spray water flow according to the air temperature and spray water temperature.

2. The spray-type air-cooled chiller unit according to claim 1, characterized in that, The water spray system includes a spray pump (6), a spray pipe and a nozzle (9). The spray pump (6) sends water through the spray pipe into the nozzle (9) and sprays the water into the air in front of the condenser inlet through the nozzle (9).

3. The spray-type air-cooled chiller unit according to claim 1, characterized in that, The water temperature regulating device (8) is a three-way valve, which is used to automatically adjust the proportion of water flowing through the compressor exhaust heat exchange module (2) according to the spray water temperature, so that the water temperature is at the optimal evaporation temperature; The water temperature regulating device (8) is connected to the spray water pump (6), the compressor exhaust heat exchange module (2) and the nozzle (9) respectively, and is used to distribute the spray water from the spray water pump (6) to the nozzle (9) and the compressor exhaust heat exchange module (2).

4. A control method for a spray-type air-cooled chiller unit, characterized in that, Includes the following steps: Water is pumped into the water spraying system and then sprayed after being heated by the compressor exhaust heat exchange module (2). The actual temperature of the spray water and the air temperature before and after spraying are collected by the temperature monitoring module (10), and the actual water flow rate of the spray water is collected by the water flow monitoring module (7). The proportion of water flowing through the compressor exhaust heat exchange module (2) is adjusted according to the spray water temperature; The amount of water evaporated from the spray is calculated based on the air temperature data before and after spraying, and the water flow rate is adjusted by the intelligent control module (11) and the water flow monitoring module (7) based on the amount of water evaporated from the spray.

5. The control method for a spray-type air-cooled chiller unit according to claim 4, characterized in that, The proportion of water flowing through the compressor exhaust heat exchange module (2) The calculation formula is as follows: in, The target temperature for the spray water, This represents the actual temperature of the spray water. This refers to the compressor discharge temperature. , These are the maximum and minimum proportions of water flowing through the compressor exhaust heat exchange module (2), respectively.

6. The control method for a spray-type air-cooled chiller unit according to claim 5, characterized in that, Target temperature of spray water The calculation formula is as follows: in, The ambient air wet-bulb temperature. This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

7. The control method for a spray-type air-cooled chiller unit according to claim 6, characterized in that, The maximum proportion of water flowing through the compressor exhaust heat exchange module (2) and minimum value They respectively satisfy: in, This refers to the actual water flow rate of the spray system. This represents the maximum water flow rate of the spray system.

8. The control method for a spray-type air-cooled chiller unit according to claim 4, characterized in that, The amount of water evaporated from the spraying system is calculated based on air temperature data before and after spraying, specifically including: Calculate the theoretical evaporation rate Q evap : Q evap = m w ·h fg Calculate the actual evaporation rate Q air : Q air = m air · c p ·( T in T out ) in, m w For the quality of the spray water, h fg This represents the difference in enthalpy before and after evaporation. m air The air quality flowing through the condenser, c p The specific heat capacity of air at constant pressure. T in The air temperature before spraying. T out The air temperature after spraying.

9. The control method for a spray-type air-cooled chiller unit according to claim 8, characterized in that, The spray water flow rate is adjusted according to the evaporation rate of the spray water through the intelligent control module (11) and the water flow monitoring module (7), specifically including: Calculate the theoretical evaporation rate Q of the spray water evap Compared with the actual evaporation Q air The difference ΔQ: ΔQ=Q evap- Q air The formula for adjusting the spray water flow rate Q is as follows: Q=Q0×(1+k·ΔQ / Q evap ) Where Q0 is the initial spray flow rate and k is the adjustment coefficient.

10. The control method for a spray-type air-cooled chiller unit according to claim 9, characterized in that, The formula for calculating the adjustment coefficient k is as follows: in, To adjust the baseline value of the parameter, This represents the current operating frequency of the wind turbine. This is the maximum operating frequency of the fan.

11. A control device for a spray-type air-cooled chiller unit, used to implement the control method for the spray-type air-cooled chiller unit as described in any one of claims 4-10, characterized in that, include: The spray unit uses a water pump to send water into the water spray system, and the water is sprayed after being heated. The data acquisition unit is used to collect the actual temperature of the spray water and the air temperature before and after spraying. The control unit includes adjusting the proportion of water flowing through the compressor exhaust heat exchange module (2) according to the spray water temperature; calculating the amount of spray water evaporation based on the air temperature data before and after spraying; and adjusting the spray water flow rate based on the amount of spray water evaporation through the intelligent control module (11) and the water flow monitoring module (7).

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