Temperature control system

Abstract

The invention discloses a temperature control system, and the system comprises a controller which is configured to sequentially operate a primary side heat exchange loop, a second heat exchanger, a first heat exchanger and a secondary side heat exchange loop which are connected with the controller, so as to absorb the heat of a to-be-cooled facility based on a liquid cooling plate arranged on the secondary side heat exchange loop; according to the obtained environment temperature and the target cooling temperature, the heat exchange temperature difference needed by cooling of the temperature control system is calculated; when the heat exchange temperature difference is smaller than a first temperature difference threshold value, a heat exchange assembly arranged on the second heat exchanger is controlled to achieve heat exchange between natural air and a refrigerant; when the heat exchange temperature difference is larger than the first temperature difference threshold value and smaller than the second temperature difference threshold value, the heat exchange assembly is controlled to achieve heat exchange between the natural water source and the refrigerant; and when the heat exchange temperature difference is larger than the second temperature difference threshold value, the heat exchange assembly is controlled to achieve heat exchange between the natural air and the refrigerant and between the natural water source and the refrigerant. Therefore, the temperature control system is not affected by seasons and regions, and popularization is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of industrial cooling, and in particular to a temperature control system. Background Art

[0002] With the popularization of artificial intelligence (AI), the energy consumption of data centers and energy storage facilities is increasing day by day. Improving the energy utilization rate of data centers and energy storage facilities has become a hot research direction in the temperature control industry. Among them, natural cooling sources have stable temperatures and low acquisition costs. Adding natural cooling source utilization equipment in data centers or energy storage equipment can achieve a cooling effect similar to mechanical refrigeration, greatly improving the energy utilization rate of these facilities.

[0003] At present, conventional temperature control systems mostly use single mechanical refrigeration to cool data centers or energy storage equipment, which consumes a lot of energy. Energy storage systems that use natural cooling sources are also mostly single natural cooling source utilization systems, and the corresponding technical solutions are greatly affected by seasons and regions, which is not conducive to large-scale promotion. Summary of the invention

[0004] In order to solve the above technical problems, an embodiment of the present application provides a temperature control system.

[0005] Some embodiments of the present application provide a temperature control system, characterized in that it includes: a primary-side heat exchange circuit for performing heat exchange based on a refrigerant flowing in the circuit; a secondary-side heat exchange circuit for performing heat exchange based on deionized water flowing in the circuit, including a liquid cooling plate for absorbing heat from the facility to be cooled; a first heat exchanger, respectively connected to a first heat exchange end of the primary-side heat exchange circuit and a second heat exchange end of the secondary-side heat exchange circuit, for heat exchange between the refrigerant and the deionized water; a second heat exchanger, connected to a third heat exchange end of the primary-side heat exchange circuit, including a heat exchange component for realizing heat exchange between the refrigerant and natural air and a natural water source, respectively; a controller, respectively connected to the primary-side heat exchange circuit, the secondary-side heat exchange circuit, the first heat exchanger, and the second The heat exchanger is connected and configured to perform the following steps: operate the primary side heat exchange circuit, the second heat exchanger, the first heat exchanger and the secondary side heat exchange circuit in sequence to absorb the heat of the cooling facility based on the liquid cooling plate; calculate the heat exchange temperature difference required for cooling of the temperature control system according to the acquired ambient temperature and the target cooling temperature; when the heat exchange temperature difference is less than the first temperature difference threshold, control the heat exchange component to achieve heat exchange between natural air and the refrigerant; when the heat exchange temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold, control the heat exchange component to achieve heat exchange between the natural water source and the refrigerant; when the heat exchange temperature difference is greater than the second temperature difference threshold, control the heat exchange component to achieve heat exchange between the natural air and the natural water source and the refrigerant respectively.

[0006] In the above embodiment, three different heat exchange methods are set based on different combinations of two natural cooling sources, natural air and natural water, and the heat exchange temperature difference is calculated according to the acquired ambient temperature and the target cooling temperature, so that different heat exchange methods are selected based on the heat exchange temperature difference, so that the temperature control system of the present application is not affected by seasons and regions, which is conducive to promotion.

[0007] In some embodiments of the present application, the heat exchange component includes: a fan, the air outlet of the fan is toward the third heat exchange end, and is used to supply natural air; a spray water pump, the water outlet of the spray water pump is toward the third heat exchange end; a water tank, used to fill the natural water source, the water tank is connected to the spray water pump; the controller is also configured to perform the following steps: obtain the inlet water temperature of the primary side heat exchange circuit; if the inlet water temperature is greater than the preset waste heat value, then when the fan is enabled, the speed of the fan is adjusted to a preset first speed, and when the spray water pump is enabled, the flow rate of the spray water pump is adjusted to a preset first flow rate.

[0008] In the above embodiment, the heat exchange effect of the primary heat exchange circuit is judged by the waste heat value of the inlet water temperature of the primary heat exchange circuit, so as to adjust the speed of the fan and the flow rate of the spray water pump based on the judgment result, thereby improving the flexibility of the temperature control system.

[0009] In some embodiments of the present application, the primary side heat exchange circuit also includes: a liquid storage tank for storing the refrigerant; a liquid pump, whose water inlet is connected to the liquid storage tank to pump the refrigerant into the primary side heat exchange circuit; a first electric regulating valve, used to control the water inlet flow rate of the primary side heat exchange circuit; the controller is also configured to perform the following steps: if the temperature control system runs for more than a preset first time period and the water inlet temperature is still greater than a preset waste heat value, the fan and the spray water pump are controlled to turn on, and the first electric regulating valve is adjusted to a preset first opening.

[0010] In the above embodiment, the heat exchange effect of the primary side heat exchange circuit is judged by the duration that the inlet water temperature of the primary side heat exchange circuit is greater than the preset residual heat value, so as to control the opening of the fan and the spray water pump based on the judgment result, and control the opening degree of the first electric regulating valve, thereby improving the flexibility of use of the temperature control system.

[0011] In some embodiments of the present application, the primary side heat exchange circuit also includes: a magnetic levitation air pump, used to control the water outlet flow rate of the primary side heat exchange circuit; the controller is also configured to perform the following steps: if the temperature control system runs for more than a preset first time period and the water inlet temperature is still greater than a preset waste heat value, then the magnetic levitation air pump suction superheat is controlled to be a preset first temperature value.

[0012] In the above embodiment, the heat exchange effect of the primary side heat exchange circuit is judged by the duration that the inlet water temperature of the primary side heat exchange circuit is greater than the preset waste heat value, so as to control the start of the fan and the spray water pump based on the judgment result, and control the temperature value of the suction superheat of the magnetic levitation air pump, thereby improving the flexibility of the temperature control system.

[0013] In some embodiments of the present application, the primary side heat exchange circuit also includes: a first stop valve, which is arranged in parallel with the first electric regulating valve; a second stop valve, which is arranged in parallel with the magnetic levitation air pump; the controller is also configured to perform the following steps: when the first electric regulating valve is turned on, the first stop valve is controlled to be opened, and / or when the magnetic levitation air pump is turned on, the second stop valve is controlled to be opened.

[0014] In some embodiments of the present application, it also includes: a cold source direct utilization loop, which is used to directly charge the natural water source into the water tank, so that the natural water source is used for heat exchange in the second heat exchanger; a first filter, which is used to filter the natural water source to obtain water for spraying and fill the water tank; a cold source indirect utilization loop, which is used for heat exchange between the spray water in the water tank and the natural water source, so that the spray water after heat exchange with the natural water source is used for heat exchange in the second heat exchanger; the cold source direct utilization loop and the cold source indirect utilization loop are respectively connected to the controller; the controller is also configured to perform the following steps: perform water quality detection on the natural water source obtained from the environment to obtain water quality parameters of the natural water source in the environment; determine whether the water quality parameters meet the management standards of the local water quality environment; if yes, enable the cold source direct utilization loop, otherwise, enable the cold source indirect utilization loop.

[0015] In the above embodiments, an adaptive cold source utilization circuit can be selected based on different water quality environments, thereby improving the adaptability of the temperature control system in different water quality environments.

[0016] In some embodiments of the present application, the cold source indirect utilization loop includes: a first circulation loop, used to circulate the spray water in the water tank; a second circulation loop, used to circulate the natural water source; a third heat exchanger, arranged between the first circulation loop and the second circulation loop, used to isolate the spray water from the natural water source while realizing heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop; the controller is also configured to perform the following steps: when the cold source indirect utilization loop is enabled, the third heat exchanger is operated to realize heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop.

[0017] In the above embodiment, since the third heat exchanger can isolate the spray water in the temperature control system from the natural water source, the third heat exchanger can reduce the pollution and damage of the spray water circulation to the natural water source while achieving heat exchange.

[0018] In some embodiments of the present application, it also includes: a second filter for filtering the natural water source after spraying by the spray water pump; the controller is also configured to perform the following steps: when the cold source direct utilization loop is enabled, the natural water source after spraying by the spray water pump is introduced into the second filter for circulation filtration until the filtered natural water source meets the local water quality environment management standards and is then discharged.

[0019] In the above embodiment, when the cold source direct utilization loop is enabled in the temperature control system, the natural water source sprayed by the spray water pump is circulated and filtered through the second filter until the filtered natural water source meets the local water quality environment management standards and is then discharged, thereby reducing the pollution and damage to the natural water source caused by the spray water circulation.

[0020] In some embodiments of the present application, it also includes: a waste heat recovery device, which is used to absorb heat in the primary side heat exchange circuit and is connected to the controller; the controller is also configured to perform the following steps: during the operation of the temperature control system, the waste heat recovery device is controlled to absorb heat on the primary side heat exchange circuit.

[0021] In the above embodiment, the waste heat recovery device can collect and reuse the waste heat generated by heat exchange, thereby reducing energy waste.

[0022] In some embodiments of the present application, the water outlet of the secondary heat exchange circuit also includes a first water pump and a second water pump arranged in parallel; the controller is also configured to perform the following steps: obtain the loop temperature of the water outlet of the secondary heat exchange circuit, and determine whether the loop temperature is greater than a preset second temperature; if yes, start the first water pump and the second water pump, otherwise, start the first water pump or the second water pump.

[0023] In the above embodiment, the heat exchange effect of the secondary heat exchange circuit is judged based on the circuit temperature at the water outlet of the secondary heat exchange circuit, so as to determine the control mode of the first water pump and the second water pump according to the judgment result, thereby improving the flexibility of use of the temperature control system.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1The figure is a schematic diagram of the overall structure of a temperature control system shown as an exemplary embodiment of the present application.

[0026] Figure 2 This is a schematic diagram of the overall structure of the second heat exchanger shown in an exemplary embodiment of the present application.

[0027] Figure 3 This is a schematic diagram of the overall structure of the primary-side heat exchange circuit shown in an exemplary embodiment of the present application.

[0028] Figure 4 This is a schematic diagram of the overall structure of a cold source utilization circuit shown in an exemplary embodiment of the present application.

[0029] Figure 5 This is a schematic diagram of the overall structure of the secondary side heat exchange circuit shown in an exemplary embodiment of the present application.

[0030] Figure 6 This is a flow chart of the execution steps of a control program in a controller shown in an exemplary embodiment of the present application.

[0031] Figure 7 This is a flowchart of the execution steps of a control program in a controller shown in another exemplary embodiment of the present application.

[0032] Figure 8 A flowchart of the execution steps of a control program in a controller is shown as another exemplary embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. first heat exchanger; 2. second heat exchanger; 3. liquid storage tank; 4. liquid pump; 5. first electric regulating valve; 6. magnetic levitation air pump; 7. solenoid valve; 8. first stop valve; 9. second stop valve; 10. third stop valve; 11. electronic expansion valve; 12. fourth stop valve; 13. fifth stop valve; 14. sixth stop valve; 15. seventh stop valve; 16. eighth stop valve; 17. ninth stop valve; 18. third heat exchanger; 19. second filter; 20. second electric regulating valve; 21. first water pump; 22. second water pump; 23. first one-way valve; 24. second one-way valve; 25. third filter; 26. third electric regulating valve. DETAILED DESCRIPTION

[0034] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0035] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0036] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0037] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0038] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0039] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a temperature control system shown in an exemplary embodiment of the present application. Figure 1 As shown, the temperature control system includes a primary side heat exchange circuit and a secondary side heat exchange circuit.

[0040] The primary heat exchange circuit is filled with a refrigerant, and the refrigerant circulates in the primary heat exchange circuit to perform heat exchange based on the refrigerant flowing in the circuit.

[0041] Deionized water is poured into the secondary heat exchange loop, and the deionized water circulates in the secondary heat exchange loop to perform heat exchange based on the deionized water flowing in the loop.

[0042] It should be noted that the refrigerant can be produced by refrigeration equipment, such as a compression condensing device, an evaporative condensing device, etc. Deionized water refers to pure water from which impurities in the form of ions have been removed. The deionized water can be obtained by one of the following methods: ion exchange resin method, reverse osmosis-ion exchange method, and reverse osmosis-electrodeionization (EDI) method.

[0043] The secondary heat exchange circuit is also provided with a liquid cooling plate, which is used to absorb the heat of the facility to be cooled. The liquid cooling plate can be arranged at one end of the secondary heat exchange circuit away from the primary heat exchange circuit, or at other positions of the secondary heat exchange circuit. The present application may have one or more liquid cooling plates, and when there are multiple liquid cooling plates, the multiple liquid cooling plates can be arranged in parallel in the secondary heat exchange circuit.

[0044] The facility to be cooled can be a data center or energy storage facility, or other heat generating facility that requires industrial cooling. Liquid cooling panels are devices that achieve cooling effects on objects through specific principles. For example, electrical energy or other forms of energy are converted into cold and heat energy by using thermoelectric effect, compression condensation cycle, evaporative cooling cycle or heat conduction, and the heat is dissipated through heat conduction, thereby achieving the purpose of cooling.

[0045] A first heat exchanger 1 is provided between the primary heat exchange circuit and the secondary heat exchange circuit.

[0046] The first heat exchanger 1 in this embodiment can be a plate heat exchanger. It can also be other heat exchangers. For example, the plate heat exchanger can also be replaced with a shell and tube heat exchanger or a shell and tube heat exchanger according to the actual project. This is only for illustration and not for limitation.

[0047] One end of the primary side heat exchange circuit close to the secondary side heat exchange circuit is the first heat exchange end, and one end of the secondary side heat exchange circuit close to the primary side heat exchange circuit is the second heat exchange end.

[0048] The first heat exchanger 1 is respectively connected to the first heat exchange end of the primary heat exchange circuit and the second heat exchange end of the secondary heat exchange circuit, and is used to realize heat exchange between the refrigerant and the deionized water.

[0049] Specifically, when in use, the deionized water in the secondary heat exchange loop absorbs heat from the data center or energy storage facility through the liquid cooling plate, for example, the heat from the CPU or battery cell, and transfers the heat to the refrigerant in the primary heat exchange loop in the first heat exchanger 1. The refrigerant in the primary heat exchange loop absorbs heat and evaporates in the first heat exchanger 1.

[0050] The primary heat exchange circuit is also provided with a third heat exchange end, which can be arranged at one end of the primary heat exchange circuit away from the secondary heat exchange circuit, and of course, can also be arranged at other positions of the primary heat exchange circuit.

[0051] A second heat exchanger 2 is provided at the third heat exchange end of the primary heat exchange circuit. The second heat exchanger 2 includes a heat exchange component for realizing heat exchange between the refrigerant and the natural air and the natural water source respectively.

[0052] The temperature control system further includes a controller, which is connected to the primary heat exchange circuit, the secondary heat exchange circuit, the first heat exchanger 1 and the second heat exchanger 2 respectively.

[0053] Exemplarily, in order to execute a preset control program on the controller, a storage module for storing the control program will be set inside the controller, and the storage module may include a built-in memory and an external memory, the built-in memory is arranged inside the controller, and the external memory is electrically connected to the controller. Among them, the external memory and the built-in memory are used for writing and reading the control program, and storing the execution parameters. For example, the built-in memory is generally directly connected to the CPU (Central Processing Unit) corresponding to the controller, and its storage capacity is generally small, but because it is directly connected to the CPU, its speed is relatively fast. In this application, the built-in memory is used to store the instructions and data of the current running program, and directly exchange information with the CPU. Among them, the built-in memory is composed of many storage units, each unit can store a binary number or an instruction represented by a binary code. The internal memory is composed of a random access memory and a read-only memory. The external memory refers to a memory other than the memory and CPU cache configured by the controller. Such a memory can generally still save data after power failure, such as a hard disk, a floppy disk, an optical disk, a USB flash drive, etc.

[0054] Figure 2 FIG. 1 is a schematic diagram of the overall structure of the second heat exchanger shown in an exemplary embodiment of the present application. Figure 2 As shown, the heat exchange components of the second heat exchanger 2 may include a fan, a spray water pump and a water tank.

[0055] The air outlet of the fan faces the third heat exchange end of the primary heat exchange circuit, and is used to supply natural air. The natural wind sent in by the fan cools the refrigerant in the third heat exchange end, so as to realize heat exchange between the natural air and the refrigerant.

[0056] The second heat exchanger 2 is provided with a water tank, which is used to be filled with natural water, and the water tank is connected to a spray water pump to provide spray water to the spray water pump. The water outlet of the spray water pump faces the third heat exchange end.

[0057] In some embodiments of the present application, in order to improve the use effect of the fan, an air inlet grille is provided at the third heat exchange end of the primary side heat exchange circuit, and a plurality of air inlets (not shown in the figure) are provided on the air inlet grille, and the plurality of air inlets are evenly distributed at the third heat exchange end of the primary side heat exchange circuit to improve the efficiency of heat exchange between natural air and refrigerant.

[0058] In addition, in order to improve the use effect of the spray water pump, a filler area is also provided at the third heat exchange end of the primary heat exchange circuit, so that the filler in the filler area can increase the heat exchange area between the spray water and the refrigerant, so as to fully exchange heat with the refrigerant in the primary heat exchange circuit. At the same time, the air outlet of the air inlet grille can also be arranged toward the filler area.

[0059] Among them, the heat exchange coil in the second heat exchanger 2 is located in the packing area. The packing in the packing area can adopt different types of packing (such as plastic packing, ceramic packing and metal packing, etc.) according to engineering requirements. The function of the packing area is to increase the heat exchange area of ​​the heat exchange coil and improve the heat transfer efficiency.

[0060] The fan of the present application may be an axial flow fan, and air enters through an air inlet grille and is blown out by the fan after passing through the heat exchange coil and the filler area.

[0061] The second heat exchanger 2 may be an evaporative heat exchanger.

[0062] Figure 3 FIG. 1 is a schematic diagram of the overall structure of the primary side heat exchange circuit shown in an exemplary embodiment of the present application. Figure 3 As shown, the primary side heat exchange circuit may further include a liquid storage tank 3. The liquid storage tank 3 may be arranged at the water inlet end of the primary side heat exchange circuit for storing refrigerant. Of course, the liquid storage tank 3 may also be arranged at other positions of the primary side heat exchange circuit.

[0063] The liquid storage tank 3 can be located at the lowest position of the primary heat exchange circuit, so that when the system is shut down, the refrigerant in the cycle can flow into the liquid storage tank 3 by gravity for storage, thereby reducing energy consumption to a certain extent.

[0064] The primary side heat exchange circuit may further include a liquid pump 4, the water inlet end of the liquid pump 4 is connected to the refrigerant so as to pump the refrigerant in the liquid storage tank 3 into the primary side heat exchange circuit.

[0065] The primary heat exchange circuit may further include a first electric regulating valve 5 , which is used to control the water inlet flow rate of the primary heat exchange circuit. For example, the first electric regulating valve 5 may be arranged at the water inlet end or the water outlet end of the liquid pump 4 .

[0066] In some embodiments of the present application, the primary heat exchange circuit may further include a magnetic suspension air pump 6, which may be disposed at the water outlet of the primary heat exchange circuit. Of course, the specific position of the magnetic suspension air pump 6 on the primary heat exchange circuit is only illustrative and may be adaptively changed according to actual application scenarios.

[0067] It should be noted that the magnetic suspension air pump 6 can make the system oil-free, thereby improving the system reliability and system energy efficiency. At the same time, the magnetic suspension air pump 6 can also be used as a supplementary water pumping device for the liquid pump 4 in this embodiment, which can effectively prevent the liquid pump 4 from failing and causing the system to fail to operate.

[0068] The primary side heat exchange circuit may further include a solenoid valve 7, which is arranged in series with the magnetic suspension air pump 6, and the solenoid valve 7 is controlled by the controller, and the solenoid valve 7 is used to control the water outlet flow rate of the primary side heat exchange circuit. During the activation of the magnetic suspension air pump 6, the controller sends a control signal to the solenoid valve 7 to realize the liquid flow control of the corresponding branch of the magnetic suspension air pump 6.

[0069] In some embodiments of the present application, the primary side heat exchange circuit may further include a plurality of stop valves. For example, the primary side heat exchange circuit may further include a first stop valve 8, which may be arranged in parallel with the first electric regulating valve 5, and the first stop valve 8 may serve as a supplementary valve for the first electric regulating valve, and may also effectively prevent the first electric regulating valve 5 and / or the liquid pump 4 from failing and causing the system to fail to operate.

[0070] The first stop valve 8 may be a manual valve or an automatic valve controlled by a controller.

[0071] For another example, the primary side heat exchange circuit may also include a second stop valve 9, which may be arranged in parallel with the magnetic levitation air pump 6. The second stop valve 9 may serve as a supplementary valve for the solenoid valve 7, and may effectively prevent the solenoid valve 7 and / or the magnetic levitation air pump 6 from failing and causing the system to be unable to operate.

[0072] Similarly, the second stop valve 9 can be a manual valve or an automatic valve controlled by a controller.

[0073] In one usage scenario, if the magnetic suspension air pump 6 fails, the second stop valve 9 can be opened to ensure the normal operation of the primary-side heat exchange circuit through the branch corresponding to the second stop valve 9.

[0074] In some embodiments of the present application, the water inlet end of the primary-side heat exchange circuit may further include a third stop valve 10 and an electronic expansion valve 11 arranged in parallel.

[0075] The third stop valve 10 serves as a safety valve for the electronic expansion valve 11. For example, the third stop valve 10 may be a manual valve, and the electronic expansion valve 11 may be an automatic valve controlled by a controller. When the electronic expansion valve 11 fails, the third stop valve 10 may be manually adjusted to ensure the normal operation of the system.

[0076] In some embodiments of the present application, temperature sensors and pressure sensors may be provided at both the water inlet and the water outlet of the primary-side heat exchange circuit to obtain the operating status of the primary-side heat exchange circuit in real time.

[0077] For example, the component marked with P in the figure may be a pressure sensor, and the component marked with T in the figure may be a temperature sensor.

[0078] In some embodiments of the present application, a waste heat recovery device may be provided at the outlet of the primary heat exchange circuit to absorb the heat in the primary heat exchange circuit and connected to the controller. It should be noted that the waste heat recovery device may be located at any position of the outlet of the primary heat exchange circuit to effectively absorb the waste heat of the refrigerant after the first heat exchanger 1 performs heat exchange.

[0079] When in use, during the operation of the temperature control system, the waste heat recovery device is controlled to absorb heat on the primary side heat exchange circuit.

[0080] For example, heat exchangers, heat pumps, etc. Heat exchangers exchange heat between two fluids of different temperatures to recycle waste heat; heat pumps absorb low-level heat energy in the environment by consuming a portion of electrical energy and convert it into high-level heat energy for use.

[0081] For another example, the waste heat recovery device can use a plate heat exchanger, a shell and tube heat exchanger or a sleeve heat exchanger, which is used to absorb the heat of the high-temperature refrigerant flowing out of the primary heat exchange circuit and use the heat to prepare domestic hot water in summer and for heating in winter. The heat exchange fluids on both sides are high-temperature refrigerant and domestic water or heating water respectively.

[0082] In some embodiments of the present application, Figure 4 FIG. 1 is a schematic diagram of the overall structure of a cold source utilization circuit shown in an exemplary embodiment of the present application. Figure 4 As shown, the temperature control system disclosed in the present application may further include a cold source direct utilization loop. The cold source direct utilization loop is used to directly charge the natural water source into the water tank so as to use the natural water source for heat exchange of the second heat exchanger 2.

[0083] Among them, the cold source direct utilization circuit includes an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to a natural water source, and the other end is connected to a water tank. A fourth stop valve 12 is arranged on the inlet pipe, and the fourth stop valve 12 is used for conducting control of the inlet pipe; the outlet pipe is used to export the natural water source after spraying by the sprinkler water pump to the natural environment. A fifth stop valve 13 is arranged on the outlet pipe, and the fifth stop valve 13 is used for conducting control of the outlet pipe.

[0084] The temperature control system may further include a first filter and a cold source indirect utilization loop. The first filter is used to filter the natural water source to obtain spray water to be filled into the water tank. The cold source indirect utilization loop is used for heat exchange between the spray water in the water tank and the natural water source, so that the spray water after heat exchange with the natural water source is used for heat exchange in the second heat exchanger 2.

[0085] The cold source indirect utilization loop may include a first circulation loop for circulating the spray water in the water tank. The first circulation loop includes an inlet pipe and an outlet pipe, a sixth stop valve 14 is provided on the inlet pipe, and a seventh stop valve 15 is provided on the outlet pipe.

[0086] The cold source indirect utilization loop may include a second circulation loop for circulatedly obtaining natural water source. The second circulation loop includes an inlet pipeline and an outlet pipeline, an eighth stop valve 16 is arranged on the inlet pipeline, and a ninth stop valve 17 is arranged on the outlet pipeline.

[0087] The cold source indirect utilization loop may include a third heat exchanger 18, which is disposed between the first circulation loop and the second circulation loop, and is used to isolate the spray water from the natural water source, while realizing heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop. The third heat exchanger 18 may be a water-water heat exchanger, a plate heat exchanger, or other heat exchangers.

[0088] In some embodiments of the present application, a second filter 19 and a second electric regulating valve 20 may be further provided on the water outlet pipe of the direct utilization loop. The second filter 19 is used to filter the natural water source after the spraying of the spraying water pump.

[0089] The second electric regulating valve 20 is connected in series with the second filter 19 and is disposed at the water inlet of the second filter 19. The second electric regulating valve 20 is used to control the water inlet flow rate on the water outlet pipeline of the direct utilization loop to improve the filtering effect of the second filter 19.

[0090] Since the first filter and the second filter 19 are both arranged in the primary-side heat exchange circuit, when using the first filter and the second filter 19, they can be used alternately, or only one can be used and the other can be used as a fault backup.

[0091] It should be noted that the indirect water source utilization mode uses a water-to-water heat exchanger to isolate the circulating water of the spray system from the natural water source. Its advantage is to avoid the pollution and damage of the natural water source by the spray water system circulation, so as to meet the environmental protection laws and regulations of the region or country where the temperature control system is used. In addition, if the water quality of the natural water source is poor (such as: high sand content or non-neutral water quality), it is easy to cause blockage or corrosion to the spray system, so the indirect natural water source utilization mode can be used. The spray circulation system of the direct water source utilization mode is an open system, which is directly connected to the natural water source and directly uses the natural water source as spray water. The advantage of this utilization mode is that the utilization rate of the natural water source is relatively high, and the energy efficiency performance of the entire temperature control system is better. If this water source utilization mode is used, it should be ensured that the natural water source is relatively stable and the water quality meets the spray water quality requirements of the spray facility.

[0092] In some embodiments of the present application, Figure 5 FIG. 1 is a schematic diagram of the overall structure of the secondary side heat exchange circuit shown in the exemplary embodiment of the present application. Figure 5 As shown, the water outlet of the secondary heat exchange circuit may further include a first water pump 21 and a second water pump 22 arranged in parallel.

[0093] When in use, the flow rate of deionized water in the secondary heat exchange loop can be adjusted by the first water pump 21 and the second water pump 22, thereby improving the heat exchange efficiency.

[0094] In some embodiments of the present application, a first one-way valve 23 may be provided at the water outlet of the first water pump 21. A second one-way valve 24 may be provided at the water outlet of the second water pump 22. This reduces the probability of deionized water backflow and improves the cooling effect of the liquid cooling plate.

[0095] In some embodiments of the present application, a temperature sensor, a pressure sensor, and a flow meter may be provided at the water inlet and the water outlet of the secondary heat exchange circuit to obtain the operating status of the secondary heat exchange circuit in real time. For example, in the diagram corresponding to the secondary heat exchange circuit, the component marked with P may be a pressure sensor, the component marked with T may be a temperature sensor, and the component marked with G may be a flow meter.

[0096] In some embodiments of the present application, a third filter 25 may be provided at the water inlet end of the secondary heat exchange loop to filter the deionized water entering the secondary heat exchange loop.

[0097] In addition, a third electric regulating valve 26 may also be provided at the water inlet end of the secondary side heat exchange circuit. The third electric regulating valve 26 is used to control the water inlet flow rate of the secondary side heat exchange circuit.

[0098] Figure 6 FIG. 1 is a flowchart of the execution steps of the control program in the controller shown in the exemplary embodiment of the present application. Figure 6 As shown, the controller of the present application is at least configured to perform the following steps:

[0099] The primary heat exchange loop, the second heat exchanger, the first heat exchanger and the secondary heat exchange loop are operated in sequence to absorb the heat of the facility to be cooled based on the liquid cooling plate;

[0100] According to the obtained ambient temperature and target cooling temperature, the heat exchange temperature difference required for cooling of the temperature control system is calculated;

[0101] When the heat exchange temperature difference is less than the first temperature difference threshold, the heat exchange component is controlled to realize heat exchange between natural air and refrigerant; when the heat exchange temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold, the heat exchange component is controlled to realize heat exchange between natural water source and refrigerant; when the heat exchange temperature difference is greater than the second temperature difference threshold, the heat exchange component is controlled to realize heat exchange between natural air and natural water source and refrigerant respectively.

[0102] Specifically, the temperature control system of the present application mainly adopts three different operation modes: air natural cooling source utilization mode, water natural cooling source utilization mode and mixed natural cooling source utilization mode. The control steps corresponding to the above controller are explained as follows:

[0103] The content of the air natural cold source utilization mode is expressed as follows: when the heat exchange temperature difference is less than the first temperature difference threshold, the heat exchange component is controlled to realize the heat exchange between natural air and refrigerant. When the outdoor temperature is lower than a specific temperature or there is no available natural water source cold source in the surrounding area, the water pump, magnetic suspension air pump and solenoid valve of the evaporative heat exchanger spray system are turned off, and the fan and liquid pump of the evaporative heat exchanger are turned on. The low outdoor temperature air enters the evaporative heat exchanger to cool the refrigerant. The refrigerant changes from gas to liquid, and the refrigerant is driven into the plate heat exchanger to complete the heat exchange by the power provided by the refrigerant liquid pump. On the secondary side, the low-temperature refrigerant flowing out of the plate heat exchanger flows through the liquid-cooled cold plate, and after sufficient heat exchange with the heating element or battery core, it enters the plate heat exchanger again to complete a complete heat exchange cycle. This mode makes full use of outdoor air for cooling.

[0104] The content of the water natural cooling source utilization mode is expressed as follows: when the heat exchange temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold, the heat exchange component is controlled to realize the heat exchange between the natural water source and the refrigerant. When the outdoor ambient temperature is high and the air is not suitable as a natural cooling source, the evaporative heat exchanger fan is turned off, and the evaporative heat exchanger spray system water pump, magnetic suspension air pump, solenoid valve and liquid pump are turned on. The renewable water natural cooling source (groundwater source, river or ocean, etc.) cools the spray water in the water tank through a water-water heat exchanger or directly participates in heat exchange in the evaporative heat exchanger as spray water. In addition, in the evaporative heat exchanger, the spray water system sprays water onto the heat exchange coil, and the spray water forms a liquid film on the surface of the heat exchange coil and exchanges energy with the refrigerant in the heat exchange coil.

[0105] The content of the mixed natural cold source utilization mode is expressed as follows: when the heat exchange temperature difference is greater than the second temperature difference threshold, the heat exchange component is controlled to realize the heat exchange between the natural air and the natural water source and the refrigerant respectively. When the outdoor temperature is in a specific temperature range, resulting in insufficient cooling capacity of a single natural cold source of air or water, the evaporative heat exchanger fan and the spray system water pump can be turned on at the same time. The refrigerant relies on cold air and spray water to cool down. The gaseous refrigerant is gradually condensed into liquid refrigerant. The air inlet grille relies on strong wind to make the water sprayed by the water pump cover the surface of the heat exchange coil. The spray water uses wind power to greatly improve the heat exchange effect. This mode makes full use of outdoor air and cooling water for cooling.

[0106] It should be noted that the selection conditions for different modes are essentially achieved by the heat exchange temperature difference between the outdoor temperature and the target cooling temperature inside the temperature control system. If it is executed solely based on the outdoor temperature, there may be certain errors. For example, in a low temperature environment, the temperature inside the temperature control system itself is also affected by the ambient temperature and lowered. Therefore, the outdoor temperature cannot be directly used as the basis for selecting different modes.

[0107] Through the above implementation mode, three different heat exchange modes are set based on different combinations of two natural cold sources, natural air and natural water, and the heat exchange temperature difference is calculated according to the acquired ambient temperature and the target cooling temperature, so that different heat exchange modes are selected based on the heat exchange temperature difference, so that the temperature control system of the present application is not affected by seasons and regions, which is conducive to promotion.

[0108] In some embodiments of the present application, the controller is further configured to perform the following steps:

[0109] Obtain the inlet water temperature of the primary side heat exchange circuit;

[0110] If the inlet water temperature is greater than the preset waste heat value, the speed of the fan is adjusted to a preset first speed when the fan is enabled, and the flow of the spray water pump is adjusted to a preset first flow when the spray water pump is enabled.

[0111] As an example, the heat exchange effect of the primary side heat exchange circuit is determined by obtaining the inlet water temperature of the primary side heat exchange circuit. If the temperature is greater than the preset waste heat value, for example, the inlet water temperature is less than 20 degrees, it means that the target heat exchange effect is met. Otherwise, it means that the target heat exchange effect is not met.

[0112] In the above case, the controller can make adaptive adjustments based on the currently enabled cooling mode. The details are as follows:

[0113] In the air natural cooling source utilization mode, that is, when only the fan is turned on, the fan speed is adjusted. For example, the default fan speed is 500rps. At this time, the fan speed can be adjusted to 800rps under the condition of ensuring the safe operation of the fan, such as not exceeding the maximum voltage limit. Here, 800rps can be the preset first speed. Of course, the first speed can also be set to other values, as long as the setting value of the first speed can be greater than the default fan speed setting under the premise of ensuring safety, so as to improve the heat exchange efficiency. It should be noted that the default fan speed can be set based on the optimal operating curve predicted by the fan to ensure the safety of the fan and its service life. The example data is only for illustrative purposes and is not limited.

[0114] In the water natural cooling source utilization mode, that is, when only the sprinkler water pump is turned on, the flow rate of the sprinkler water pump is adjusted. Based on the above-mentioned air natural cooling source utilization mode, a similar example is given. For example, the default flow rate of the sprinkler water pump is 5m 3 / h, then the flow rate of the sprinkler pump can be adjusted to 8m / s while ensuring the safe operation of the sprinkler pump, provided that the maximum voltage limit is not exceeded. 3 / h, 8m here 3 / h can be the preset first flow rate, and the setting of the first flow rate can also be other values, as long as the setting value of the first flow rate can be greater than the default setting of the spray water pump flow rate under the premise of ensuring safety, so as to improve the heat exchange efficiency. It should also be noted that the default flow rate of the spray water pump can be set based on the optimal operating curve predicted by the spray water pump to ensure the safety and service life of the spray water pump. The example data is only for illustrative purposes and is not limited.

[0115] Based on the above two operating modes, in the mixed natural cooling source utilization mode, that is, when the fan and the spray water pump are turned on at the same time, the fan and the spray water pump can be adjusted simultaneously according to the fan adjustment method corresponding to the air natural cooling source utilization mode and the spray water pump adjustment method corresponding to the water natural cooling source utilization mode, which will not be repeated here.

[0116] Through the above implementation, the heat exchange effect of the primary side heat exchange circuit is judged by the waste heat value of the inlet water temperature of the primary side heat exchange circuit, so as to adjust the fan speed and the flow rate of the spray water pump based on the judgment result, thereby improving the flexibility of the temperature control system.

[0117] In some embodiments of the present application, Figure 7 FIG. 1 is a flowchart of the execution steps of a control program in a controller shown in another exemplary embodiment of the present application. Figure 7 As shown, the controller of the present application is also configured to perform the following steps:

[0118] If the temperature control system runs for longer than a preset first time period and the water inlet temperature is still greater than the preset waste heat value, the fan and the spray water pump are controlled to start, and the first electric regulating valve is adjusted to a preset first opening.

[0119] Specifically, in addition to the three main operating modes mentioned above, the present application also provides a relatively independent operating mode, which may be referred to as the mechanical refrigeration mode hereinafter.

[0120] Among them, the content of the mechanical refrigeration mode is expressed as follows: when the cooling capacity in any of the air natural cooling source utilization mode, water natural cooling source utilization mode and mixed natural cooling source utilization mode is insufficient to meet the needs of the temperature control system, or when the natural cooling source utilization system fails, mechanical refrigeration can be used as a way to supplement cooling capacity to further improve the stability of the temperature control system. It can be understood that the mechanical refrigeration mode is to fully open all cooling paths of the primary side heat exchange circuit.

[0121] For example, in the air natural cooling source utilization mode, if the temperature control system runs for more than the preset first time period and the inlet water temperature is still greater than the preset waste heat value, the control sends a start signal for the fan and the spray water pump to control the fan and the spray water pump to be in the on state, and at the same time, adjust the first electric regulating valve to the first opening.

[0122] It should be noted that the setting principle of the first opening is similar to the first speed and the first flow rate, that is, the first opening is greater than the default opening of the first electric control valve. Under the default opening of the first electric control valve, the opening of the first electric control valve is increased to improve the heat exchange efficiency.

[0123] Through the above implementation mode, the heat exchange effect of the primary side heat exchange circuit is judged by the duration that the inlet water temperature of the primary side heat exchange circuit is greater than the preset waste heat value, so as to control the opening of the fan and the spray water pump based on the judgment result, and control the opening of the first electric regulating valve, thereby improving the flexibility of use of the temperature control system.

[0124] In some embodiments of the present application, the controller of the present application is further configured to perform the following steps:

[0125] If the operating time of the temperature control system is greater than the preset first time period, and the water inlet temperature is still greater than the preset waste heat value, the suction superheat of the magnetic suspension air pump is controlled to be the preset first temperature value.

[0126] Similar to the adjustment of the first electric regulating valve, the magnetic levitation air pump is controlled as a supplementary structure of the liquid pump. When the temperature control system cannot meet the cooling needs of the system based on the three main cooling paths, the flow rate of the primary side heat exchange circuit is increased by adjusting the suction superheat of the magnetic levitation air pump.

[0127] For example, when the magnetic suspension air pump suction superheat is 30 degrees, the flow rate of the corresponding branch is 5m 3 / h; then when the magnetic suspension air pump suction superheat is 20 degrees, the flow rate of the corresponding branch is 8m 3 / h. That is, the smaller the suction superheat of the magnetic suspension air pump is, the larger the corresponding branch flow rate is required. Of course, this is only an exemplary description and no specific limitation is made.

[0128] Based on this, the adjustment of the first temperature value is similar to the first opening, the first speed and the first flow rate, and is also adjusted based on the default value, but the difference is that the first temperature value needs to be less than the default suction superheat of the magnetic suspension air pump, and the heat exchange effect of the primary side heat exchange circuit after adjustment is better. I will not elaborate on this here.

[0129] Through the above implementation, the heat exchange effect of the primary side heat exchange circuit is judged by the duration that the inlet water temperature of the primary side heat exchange circuit is greater than the preset waste heat value, so as to control the start of the fan and the spray water pump based on the judgment result, and control the temperature value of the suction superheat of the magnetic levitation air pump, thereby improving the flexibility of the temperature control system.

[0130] In some embodiments of the present application, in order to improve the heat exchange effect of the primary side heat exchange circuit, the controller of the present application is further configured to perform the following steps:

[0131] When the first electric regulating valve is turned on, the first stop valve is controlled to be opened, and / or when the magnetic suspension air pump is turned on, the second stop valve is controlled to be opened.

[0132] Through the above implementation, the normal operation of the primary side heat exchange circuit can be ensured according to the branch where the first stop valve and the second stop valve are located, so as to reduce the resistance of the magnetic suspension air pump and the liquid pump to the flow of the refrigerant. At the same time, the normal operation of the system is also ensured when any structure of the magnetic suspension air pump and the liquid pump fails.

[0133] In some embodiments of the present application, Figure 8 FIG. 1 is a flowchart of the execution steps of the control program in the controller shown in another exemplary embodiment of the present application. Figure 8 As shown, the controller of the present application is also configured to perform the following steps:

[0134] Conduct water quality testing on natural water sources obtained from the environment to obtain water quality parameters of natural water sources in the environment;

[0135] Determine whether water quality parameters meet the management standards of the local water quality environment;

[0136] If yes, the cold source direct utilization circuit is enabled, otherwise, the cold source indirect utilization circuit is enabled.

[0137] Through the above implementation, an appropriate cold source utilization circuit can be selected based on different water quality environments, thereby improving the adaptability of the temperature control system in different water quality environments.

[0138] In some embodiments of the present application, the controller of the present application is further configured to perform the following steps:

[0139] When the cold source indirect utilization loop is activated, the third heat exchanger is operated to achieve heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop.

[0140] It should be noted that, based on the arrangement of the third heat exchanger, the spray water in the first circulation loop can be isolated from the natural water source of the second circulation loop, which can effectively reduce the probability of cross-contamination of water sources.

[0141] Through the above implementation, since the third heat exchanger can isolate the spray water in the temperature control system from the natural water source, the third heat exchanger can reduce the pollution and damage of the spray water circulation to the natural water source while achieving heat exchange.

[0142] In some embodiments of the present application, the controller of the present application is further configured to perform the following steps:

[0143] When the cold source direct utilization loop is activated, the natural water source sprayed by the spray pump is introduced into the second filter for circulation filtration until the filtered natural water source meets the local water quality environment management standards and is then discharged.

[0144] Through the above implementation, when the cold source direct utilization loop is enabled in the temperature control system, the natural water source sprayed by the spray water pump is circulated and filtered through the second filter until the filtered natural water source meets the local water quality environment management standards and is then discharged, thereby reducing the pollution and damage to the natural water source caused by the spray water circulation.

[0145] In some embodiments of the present application, the controller of the present application is further configured to perform the following steps:

[0146] Obtaining the loop temperature of the water outlet of the secondary side heat exchange loop, and determining whether the loop temperature is greater than a preset second temperature;

[0147] If yes, the first water pump and the second water pump are turned on; otherwise, the first water pump or the second water pump is turned on.

[0148] Specifically, the present application can determine whether to start the first water pump and the second water pump based on the loop temperature at the outlet of the secondary heat exchange loop. For example, when the loop temperature is less than or equal to the preset second temperature, it indicates that the current secondary heat exchange loop flow can meet the current heat exchange work, so there is no need to start the two water pumps, which plays a role in energy saving. Otherwise, it is necessary to start the two water pumps to improve the heat exchange efficiency.

[0149] Through the above-mentioned implementation manner, the control method of the first water pump and the second water pump in the secondary side heat exchange circuit of the present application can improve the use flexibility of the temperature control system.

[0150] It should be noted that since the battery cells in data centers or energy storage facilities have high requirements for the temperature fluctuation range, the temperature control system needs to strictly control the outlet water temperature. This system can control the temperature of each heating element or battery cell within a reasonable range by adjusting the inlet temperature of the primary side heat exchange circuit, the circulating water pump flow of the secondary side heat exchange circuit and the opening of the electric regulating valve of each branch.

[0151] When the system is running, the temperature control logic of each branch can adopt a PID control algorithm or an MPC model-based prediction algorithm.

[0152] For example, the two control algorithms can be used in different usage scenarios. The PID control algorithm is simple to calculate and easy to implement. It is suitable for temperature control systems with fewer branches and small temperature fluctuation ranges of heating elements or battery cells. The MPC algorithm has a large amount of calculation and requires accurate mathematical modeling of heating elements and battery cell temperatures, but its control is more accurate and has strong controllability. Implementers can select different control algorithms based on actual engineering and apply them to the temperature control system described in this patent.

[0153] For the drawings of the present application in the above-mentioned various embodiments, it should be noted that the flowcharts and block diagrams in the drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to the various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0155] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A temperature control system, characterized in that: include: A primary side heat exchange circuit for exchanging heat based on the refrigerant flowing in the circuit; A secondary heat exchange circuit for heat exchange based on deionized water flowing in the circuit, including a liquid cooling plate for absorbing heat from the facility to be cooled; A first heat exchanger, connected to the first heat exchange end of the primary heat exchange circuit and the second heat exchange end of the secondary heat exchange circuit, respectively, for heat exchange between the refrigerant and the deionized water; A second heat exchanger, connected to the third heat exchange end of the primary heat exchange circuit, comprises a heat exchange component for realizing heat exchange between the refrigerant and the natural air and the natural water source respectively; A controller is connected to the primary heat exchange circuit, the secondary heat exchange circuit, the first heat exchanger and the second heat exchanger respectively, and is configured to perform the following steps: sequentially operating the primary heat exchange circuit, the second heat exchanger, the first heat exchanger, and the secondary heat exchange circuit to absorb heat from the facility to be cooled based on the liquid cooling plate; According to the obtained ambient temperature and target cooling temperature, the heat exchange temperature difference required for cooling of the temperature control system is calculated; When the heat exchange temperature difference is less than a first temperature difference threshold, the heat exchange component is controlled to realize heat exchange between natural air and the refrigerant; when the heat exchange temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold, the heat exchange component is controlled to realize heat exchange between the natural water source and the refrigerant; when the heat exchange temperature difference is greater than the second temperature difference threshold, the heat exchange component is controlled to realize heat exchange between the natural air and the natural water source and the refrigerant respectively.

2. The temperature control system according to claim 1, characterized in that: The heat exchange component comprises: a fan, wherein the air outlet of the fan faces the third heat exchange end and is used to supply natural air; A spray water pump, wherein the water outlet of the spray water pump faces the third heat exchange end; A water tank, used for filling natural water source, the water tank is connected to the spray water pump; The controller is further configured to perform the following steps: Obtaining the water inlet temperature of the primary side heat exchange circuit; If the water inlet temperature is greater than the preset waste heat value, the speed of the fan is adjusted to a preset first speed when the fan is enabled, and the flow rate of the spray water pump is adjusted to a preset first flow rate when the spray water pump is enabled.

3. The temperature control system according to claim 2, characterized in that: The primary side heat exchange circuit also includes: A liquid storage tank, used for storing the refrigerant; a liquid pump, the water inlet of which is connected to the liquid storage tank, so as to pump the refrigerant into the primary-side heat exchange circuit; A first electric regulating valve, used to control the water inlet flow rate of the primary side heat exchange circuit; The controller is further configured to perform the following steps: If the temperature control system runs for longer than a preset first time period and the water inlet temperature is still greater than a preset residual heat value, the fan and the spray water pump are controlled to start, and the first electric regulating valve is adjusted to a preset first opening.

4. The temperature control system according to claim 3, characterized in that: The primary side heat exchange circuit also includes: A magnetically suspended air pump, used to promote the flow of the refrigerant in the primary-side heat exchange circuit; The controller is further configured to perform the following steps: If the operating time of the temperature control system is greater than the preset first time period, and the water inlet temperature is still greater than the preset waste heat value, the suction superheat of the magnetic suspension air pump is controlled to be the preset first temperature value.

5. The temperature control system according to claim 4, characterized in that: The primary side heat exchange circuit also includes: A first stop valve, arranged in parallel with the first electric regulating valve; A second stop valve is arranged in parallel with the magnetic suspension air pump; The controller is further configured to perform the following steps: When the first electric regulating valve is turned on, the first stop valve is controlled to be opened, and / or when the magnetic suspension air pump is turned on, the second stop valve is controlled to be opened.

6. The temperature control system according to claim 2, characterized in that: Also includes: A cold source direct utilization loop, used for directly charging a natural water source into the water tank, so as to use the natural water source for heat exchange in the second heat exchanger; A first filter is used to filter the natural water source to obtain water for spraying and fill the water tank; A cold source indirect utilization loop is used for heat exchange between the spray water in the water tank and the natural water source, so that the spray water after heat exchange with the natural water source is used for heat exchange in the second heat exchanger; The cold source direct utilization loop and the cold source indirect utilization loop are respectively connected to the controller; The controller is further configured to perform the following steps: Conduct water quality testing on natural water sources obtained from the environment to obtain water quality parameters of natural water sources in the environment; Determine whether the water quality parameters meet the management standards of the local water quality environment; If yes, the cold source direct utilization circuit is activated, otherwise, the cold source indirect utilization circuit is activated.

7. The temperature control system according to claim 6, characterized in that: The cold source indirect utilization circuit comprises: A first circulation loop, used for circulating the spray water in the water tank; The second circulation loop is used to circulate and obtain natural water sources; A third heat exchanger is provided between the first circulation loop and the second circulation loop, and is used to isolate the spray water from the natural water source and realize heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop; The controller is further configured to perform the following steps: When the cold source indirect utilization loop is activated, the third heat exchanger is operated to achieve heat exchange between the spray water in the first circulation loop and the natural water source in the second circulation loop.

8. The temperature control system according to claim 7, characterized in that: Also includes: A second filter is used to filter the natural water source after being sprayed by the spray water pump; The controller is further configured to perform the following steps: When the cold source direct utilization loop is activated, the natural water source sprayed by the spray water pump is introduced into the second filter for circulation filtration until the filtered natural water source meets the local water quality environment management standards and is then discharged.

9. The temperature control system according to any one of claims 1 to 8, characterized in that: Also includes: A waste heat recovery device, used for absorbing heat in the primary-side heat exchange circuit and connected to the controller; The controller is further configured to perform the following steps: During the operation of the temperature control system, the waste heat recovery device is controlled to absorb heat on the primary-side heat exchange circuit.

10. The temperature control system according to any one of claims 1 to 8, characterized in that: The water outlet end of the secondary heat exchange circuit also includes a first water pump and a second water pump arranged in parallel; The controller is further configured to perform the following steps: Obtaining the loop temperature of the water outlet end of the secondary heat exchange loop, and determining whether the loop temperature is greater than a preset second temperature; If yes, then the first water pump and the second water pump are turned on; otherwise, then the first water pump or the second water pump is turned on.

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