Water fluorine double-coil air conditioning system and data center

Abstract

The present disclosure provides a water-fluorine double-coil air conditioning system and a data center, and relates to the fields of artificial intelligence such as cloud computing, data center thermal management, and refrigeration technology. The water-fluorine double-coil air conditioning system can include a water coil, a fluorine coil, and a fan. The medium flowing in the water coil is water, the medium flowing in the fluorine coil is a refrigerant other than water, and the fan is used to provide power for air circulation in the machine room. The hot air in the machine room is cooled by the water coil and / or the fluorine coil and then sent out by the fan. The present disclosure can significantly reduce energy consumption.

Description

Technical Field

[0001] This disclosure relates to the field of artificial intelligence technology, particularly to cloud computing, data center thermal management and cooling technology, and especially to water-fluorine dual-coil air conditioning systems and data centers. Background Technology

[0002] Driven by the iteration and large-scale deployment of technologies such as cloud computing and high-performance computing, the deployment density of information technology (IT) equipment in data centers is showing a continuous upward trend. This high-density deployment model poses a severe challenge to the thermal management efficiency of cooling systems. Currently, the energy consumption of air conditioning systems accounts for more than 40% of the total energy consumption of data centers, which has become a key technical bottleneck restricting the optimization of power usage effectiveness (PUE) in data centers. Utility Model Content

[0003] This disclosure provides a water-fluorine dual-coil air conditioning system and a data center.

[0004] A water-fluorine dual-coil air conditioning system, comprising:

[0005] Water coils, refrigerant coils, and fans;

[0006] The medium flowing in the water coil is water, the medium flowing in the refrigerant coil is a refrigerant other than water, and the fan is used to provide power for air circulation in the computer room.

[0007] The hot air in the computer room is cooled by the water coil and / or the refrigerant coil before being sent out by the fan.

[0008] A data center, comprising:

[0009] The computer room and the water-fluorine dual-coil air conditioning system as described above.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0011] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0012] Figure 1 This is a schematic diagram of the composition structure of the first embodiment 100 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0013] Figure 2 This is a schematic diagram of the composition structure of the second embodiment 200 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0014] Figure 3 This is a schematic diagram of the composition structure of the third embodiment 300 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0015] Figure 4 This is a schematic diagram of the composition structure of the fourth embodiment 400 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0016] Figure 5 This is a schematic diagram of the composition structure of the fifth embodiment 500 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0017] Figure 6 This is a schematic diagram of the composition structure of the sixth embodiment 600 of the water-fluorine dual-coil air conditioning system described in this disclosure;

[0018] Figure 7 This is a schematic diagram of the composition structure of the data center embodiment 700 described in this disclosure. Detailed Implementation

[0019] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0020] Furthermore, it should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] Traditional air conditioning systems generally use a single-medium loop cooling method, maintaining the temperature inside the data center's server room through a compressor refrigeration cycle. However, this method relies on compressor cooling year-round, resulting in low energy efficiency. Even when the outdoor temperature is low, it cannot effectively utilize the low-temperature environment for cooling, requiring the compressor to run continuously for extended periods, leading to high energy consumption.

[0022] Therefore, this disclosure proposes a water-fluorine dual-coil air conditioning system. Accordingly, Figure 1 This is a schematic diagram of the structural composition of the first embodiment 100 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 1 As shown, it may include: water coil 1, refrigerant coil 2 and fan 7.

[0023] The medium flowing in the water coil 1 is water, and the medium flowing in the refrigerant coil 2 is a refrigerant other than water. The fan 7 is used to provide power for the air circulation in the computer room. The hot air in the computer room is cooled by the water coil 1 and / or the refrigerant coil 2 and then sent out by the fan 7.

[0024] In other words, after the hot air in the computer room is sent into the water-refrigerant dual-coil air conditioning system 100, it is cooled by the water coil 1 and / or the refrigerant coil 2 to obtain cooled cold air. Then, the cold air is sent back into the computer room by the fan 7 to form a closed loop to maintain a suitable temperature in the computer room.

[0025] Furthermore, it can be seen that by adopting the solution described in this disclosure, the hot air in the computer room can be cooled by using only water coil 1, or by using only refrigerant coil 2, or by using both water coil 1 and refrigerant coil 2 simultaneously, depending on actual needs. Compared with the traditional single-medium loop cooling method, it can make better use of natural resources (such as outdoor low-temperature water). For example, when the inlet water temperature of water coil 1 meets the requirements, only water coil 1 can be used to cool the hot air in the computer room, thereby reducing energy consumption.

[0026] exist Figure 1 Based on the water-fluorine dual-coil air conditioning system 100 shown, this disclosure further proposes some water-fluorine dual-coil air conditioning systems with more complete topologies, which will be introduced below.

[0027] 1) Topology

[0028] In practical applications, in addition to water coil 1, refrigerant coil 2 and fan 7, the water-refrigerant dual-coil air conditioning system 100 may further include some other components.

[0029] Accordingly, Figure 2 This is a schematic diagram of the structural composition of the second embodiment 200 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 2 As shown, it may include: water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, and fan 7.

[0030] Compressor 3 pressurizes the gaseous refrigerant from refrigerant coil 2 and supplies it to water-refrigerant heat exchanger 4. The gaseous refrigerant is produced by the vaporization of liquid refrigerant after absorbing heat. Water-refrigerant heat exchanger 4 condenses the gaseous refrigerant into liquid refrigerant via water flow. Electronic expansion valve 5 returns liquid refrigerant to refrigerant coil 2 and regulates the flow rate of liquid refrigerant in refrigerant coil 2. Water coil two-way valve 6 regulates the flow rate of water in the water coil.

[0031] Figure 2The components shown cooperate and work in coordination, enabling the water-fluorine dual-coil air conditioning system 200 to operate continuously and stably.

[0032] In some embodiments of this disclosure, such as Figure 2 As shown, the water coil 1 and the refrigerant coil 2 can be connected in series. Furthermore, depending on the inlet water temperature of the water coil 1, the water-refrigerant dual-coil air conditioning system 200 can operate in two different modes, including a natural cooling operation mode and a mixed operation mode.

[0033] When the inlet water temperature of water coil 1 is lower than the air supply temperature of the computer room, the water-refrigerant dual-coil air conditioning system 200 can be in natural cooling operation mode, the compressor 3 is off, the water coil two-way valve 6 is open, and the hot air is cooled by water coil 1 and then sent out by fan 7. When the inlet water temperature of water coil 1 is higher than the air supply temperature of the computer room, the water-refrigerant dual-coil air conditioning system 200 can be in mixed operation mode, the compressor 3 and the water coil two-way valve 6 are open, and the hot air is cooled by water coil 1 and refrigerant coil 2 in sequence and then sent out by fan 7.

[0034] When the inlet water temperature of water coil 1 is equal to the supply air temperature of the machine room, there are no restrictions on how to handle it. For example, the above-mentioned natural cooling operation mode or the above-mentioned mixed operation mode can be used. Subsequent similar situations (i.e., the "equal to" situation) will not be elaborated further.

[0035] In natural cooling operation mode, when the inlet water temperature of water coil 1 is lower than the air supply temperature of the machine room, compressor 3 can be shut off, thus preventing refrigerant coil 2 from operating. Water coil two-way valve 6 can be opened, and the flow rate of water in water coil 1 can be controlled by adjusting the opening of water coil two-way valve 6. Correspondingly, the hot air in the machine room is cooled by water coil 1 and then sent out by fan 7. Specifically, the water exchanges heat with the hot air in water coil 1, and then flows through water-refrigerant heat exchanger 4. Since refrigerant coil 2 is not in operation at this time, the water flows directly through water-refrigerant heat exchanger 4.

[0036] In the mixed operation mode, when the inlet water temperature of water coil 1 is higher than the air supply temperature of the machine room, compressor 3 can be turned on and water coil two-way valve 6 can also be turned on. The hot air in the machine room is first pre-cooled by water coil 1, and then cooled to the air supply temperature by refrigerant coil 2 before being sent out by fan 7, that is, sent to the machine room.

[0037] Water flows through water coil 1 and exchanges heat with hot air. Then it flows through water-fluorine heat exchanger 4. The liquid refrigerant in refrigerant coil 2 absorbs heat from the pre-cooled hot air and vaporizes into gaseous refrigerant. Compressor 3 pressurizes the gaseous refrigerant and supplies it to water-fluorine heat exchanger 4. Water-fluorine heat exchanger 4 uses water flow to exchange heat with gaseous refrigerant, condensing the gaseous refrigerant into liquid refrigerant. Then, the liquid refrigerant is returned to refrigerant coil 2 by electronic expansion valve 5, and the cycle continues.

[0038] use Figure 2 As shown in the topology, when the water-refrigerant dual-coil air conditioning system 200 is in mixed operation mode, all the incoming water will flow through the water coil 1, thereby fully utilizing the pre-cooling function of the water coil 1 and reducing the energy consumption of the compressor. Moreover, this topology has fewer components, simple control logic, and is easy to implement.

[0039] but Figure 2 The topology shown causes the return air of the computer room to be heated in reverse when the inlet water temperature of the water coil 1 is higher than the return air temperature of the computer room, thereby increasing the energy consumption of the compressor. Therefore, this topology is mainly suitable for areas where the inlet water temperature of the water coil 1 is lower than the return air temperature of the computer room throughout the year.

[0040] 2) Topology II

[0041] Figure 3 This is a schematic diagram of the structural composition of the third embodiment 300 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 3 As shown, it may include: water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, fan 7, and water coil bypass valve 8.

[0042] It can be seen that, compared to Figure 2 The water-refrigerant dual-coil air conditioning system 200 and 300 shown further include a water coil bypass valve 8. The water coil bypass valve 8 can be used to control whether to short-circuit the water coil 1. Additionally, as... Figure 3 As shown, the water coil 1 and the fluorine coil 2 can be connected in series.

[0043] Depending on the inlet water temperature of the water coil 1, the water-refrigerant dual-coil air conditioning system 300 can operate in three different modes, including natural cooling operation mode, mixed operation mode and compressor operation mode.

[0044] When the inlet water temperature of water coil 1 is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 300 can be in natural cooling operation mode. At this time, the compressor 3 and the water coil bypass valve 8 are closed, the water coil two-way valve 6 is opened, and the flow rate of water in water coil 1 can be controlled by adjusting the opening of the water coil two-way valve 6. The hot air in the computer room is cooled by water coil 1 and then sent out by fan 7.

[0045] When the inlet water temperature of water coil 1 is higher than the supply air temperature of the computer room but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 300 can be in a mixed operation mode. At this time, the compressor 3 and the two-way valve 6 of the water coil are open, the bypass valve 8 of the water coil is closed, and the hot air of the computer room is cooled by passing through water coil 1 and refrigerant coil 2 in sequence before being sent out by fan 7. That is, the hot air of the computer room is first pre-cooled by water coil 1, and then cooled to the supply air temperature by refrigerant coil 2 before being sent out by fan 7.

[0046] When the inlet water temperature of water coil 1 is higher than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 300 can be in compressor operation mode. At this time, the compressor 3, water coil bypass valve 8 and water coil two-way valve 6 are all open. Water coil 1 is short-circuited through water coil bypass valve 8. The hot air in the computer room is cooled by refrigerant coil 2 and then sent out by fan 7, thereby avoiding the return air in the computer room being reverse-heated by water coil 1.

[0047] In compressor operation mode, the water no longer flows through water coil 1, but directly flows into water-refrigerant heat exchanger 4 through water coil bypass valve 8. The liquid refrigerant in refrigerant coil 2 absorbs heat from the hot air and vaporizes into gaseous refrigerant. Compressor 3 pressurizes the gaseous refrigerant and supplies it to water-refrigerant heat exchanger 4. Water-refrigerant heat exchanger 4 uses the water flow to exchange heat with the gaseous refrigerant, condensing the gaseous refrigerant into liquid refrigerant. Then, the liquid refrigerant is returned to refrigerant coil 2 by electronic expansion valve 5.

[0048] use Figure 3 The topology shown retains the advantages of the series structure, which can give full play to the pre-cooling function of water coil 1. At the same time, reverse heating can be avoided by controlling the opening and closing of water coil bypass valve 8, thereby further reducing energy consumption. In addition, compared with topology one, topology two has a wider range of applications and is no longer limited to areas where the inlet water temperature of water coil 1 is lower than the return air temperature of the computer room throughout the year.

[0049] 3) Topology three

[0050] Figure 4 This is a schematic diagram of the structural composition of the fourth embodiment 400 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 4 As shown, it may include: water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, fan 7, and water-refrigerant heat exchanger bypass valve 9.

[0051] It can be seen that, compared to Figure 2 The water-refrigerant dual-coil air conditioning system 200 and 400 shown further include a water-refrigerant heat exchanger bypass valve 9. The water-refrigerant heat exchanger bypass valve 9 can be used to control whether to short-circuit the water-refrigerant heat exchanger 4. Additionally, as shown... Figure 4 As shown, the water coil 1 and the fluorine coil 2 can be connected in series.

[0052] Depending on the inlet water temperature of the water coil 1, the water-refrigerant dual-coil air conditioning system 400 can operate in two different modes, including a natural cooling operation mode and a mixed operation mode.

[0053] When the inlet water temperature of water coil 1 is lower than the supply air temperature of the computer room, the water-fluorine dual-coil air conditioning system 400 can be in natural cooling operation mode. At this time, the compressor 3 is turned off, the water-fluorine heat exchanger bypass valve 9 is opened, the water-fluorine heat exchanger 4 is short-circuited through the water-fluorine heat exchanger bypass valve 9, the water coil two-way valve 6 is opened, and the flow rate of water in water coil 1 can be controlled by adjusting the opening degree of the water coil two-way valve 6. The hot air in the computer room is cooled by water coil 1 and then sent out by fan 7.

[0054] When the inlet water temperature of water coil 1 is higher than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 400 can be in mixed operation mode. At this time, the compressor 3 and the two-way valve 6 of the water coil are open, and the bypass valve 9 of the water-refrigerant heat exchanger is closed. The hot air in the computer room is cooled by passing through water coil 1 and refrigerant coil 2 in sequence and then sent out by fan 7. That is, the hot air in the computer room is first pre-cooled by water coil 1, and then cooled to the supply air temperature by refrigerant coil 2 before being sent out by fan 7.

[0055] use Figure 4 The topology shown retains the advantages of a series structure, fully utilizing the pre-cooling function of water coil 1. Simultaneously, the water-refrigerant heat exchanger 4 can be short-circuited by controlling the bypass valve 9. The water-refrigerant heat exchanger 4 typically employs a compact design with narrow and tortuous water flow channels. Therefore, even when compressor 3 is off, water flow through the water-refrigerant heat exchanger 4 still encounters some resistance. Figure 4 As shown in the topology, when the inlet water temperature of the water coil 1 is lower than the supply air temperature of the machine room, since the refrigerant coil 2 does not need to work, the water-refrigerant heat exchanger 4 has no actual function in the refrigeration cycle. Therefore, the water-refrigerant heat exchanger 4 can be short-circuited through the water-refrigerant heat exchanger bypass valve 9, so that the water flow no longer passes through the water-refrigerant heat exchanger 4, thereby reducing the overall water resistance and further reducing energy consumption.

[0056] It should be noted that in practical applications, it is also possible to... Figure 3 and Figure 4 The water-refrigerant dual-coil air conditioning system shown is combined, that is, the water-refrigerant dual-coil air conditioning system may include water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, fan 7, water coil bypass valve 8, and water-refrigerant heat exchanger bypass valve 9, thereby taking into account... Figure 3 and Figure 4The advantages of the topology shown are illustrated. In this case, the water-refrigerant dual-coil air conditioning system can operate in three modes: natural cooling mode, mixed operation mode, and compressor operation mode. Specifically, in natural cooling mode, compressor 3 and water coil bypass valve 8 can be closed, while water-refrigerant heat exchanger bypass valve 9 and water coil two-way valve 6 can be opened. In mixed operation mode, water coil bypass valve 8 and water-refrigerant heat exchanger bypass valve 9 can be closed, while compressor 3 and water coil two-way valve 6 can be opened. In compressor operation mode, compressor 3, water coil bypass valve 8, and water coil two-way valve 6 can be opened, while water-refrigerant heat exchanger bypass valve 9 can be closed.

[0057] 4) Topology four

[0058] Figure 5 This is a schematic diagram of the structural composition of the fifth embodiment 500 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 5 As shown, it may include: water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, fan 7, and water-refrigerant heat exchanger two-way valve 10.

[0059] It can be seen that, compared to Figure 2 The water-fluorine dual-coil air conditioning system 200 and 500 shown further include a water-fluorine heat exchanger two-way valve 10. The water-fluorine heat exchanger two-way valve 10 can be used to control whether water flows into the water-fluorine heat exchanger 4. Additionally, as... Figure 5 As shown, water coil 1 and refrigerant coil 2 can be connected in parallel.

[0060] Depending on the inlet water temperature of the water coil 1, the water-refrigerant dual-coil air conditioning system 500 can operate in three different modes, including natural cooling operation mode, mixed operation mode, and compressor operation mode.

[0061] When the inlet water temperature of water coil 1 is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 500 can be in natural cooling operation mode. At this time, the compressor 3 and the two-way valve 10 of the water-refrigerant heat exchanger are closed. Since the two-way valve 10 of the water-refrigerant heat exchanger is closed, the water will only flow into the water coil 6 and will not flow into the water-refrigerant heat exchanger 4. Accordingly, the refrigerant coil 2 can be stopped from working, the two-way valve 6 of the water coil is opened, and the flow rate of the water in the water coil 1 can be controlled by adjusting the opening of the two-way valve 6 of the water coil. The hot air in the computer room is cooled by the water coil 1 and then sent out by the fan 7.

[0062] When the inlet water temperature of water coil 1 is higher than the supply air temperature of the computer room but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 500 can operate in a mixed mode. The compressor 3, the two-way valve 10 of the water-refrigerant heat exchanger, and the two-way valve 6 of the water coil are opened, allowing water to flow into water coil 1 and water-refrigerant heat exchanger 4 respectively. The hot air in the computer room is cooled sequentially through water coil 1 and refrigerant coil 2 before being sent out by fan 7. In other words, the water inlet is divided into two parts: one part enters water coil 1, and the other part enters water-refrigerant heat exchanger 4 to condense the gaseous refrigerant into liquid refrigerant. The hot air in the computer room is first pre-cooled through water coil 1, and then cooled to the supply air temperature through refrigerant coil 2 before being sent out by fan 7.

[0063] When the inlet water temperature of water coil 1 is higher than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 500 can be in compressor operation mode. The two-way valve 6 of the water coil is closed, and no water flows through the water coil 1. The two-way valve 10 of the compressor 3 and the water-refrigerant heat exchanger is opened, and the hot air in the computer room is cooled through the refrigerant coil 2 and then sent out through the fan 7.

[0064] Figure 5 In the topology shown, the water coil 1 and the refrigerant coil 2 adopt a parallel structure, and the water resistance of the whole unit is less than that of the series structure, thereby reducing energy consumption. Moreover, when the inlet water temperature of the water coil 1 is higher than the return air temperature of the machine room, the compressor can be operated in operation mode, and no water flows through the water coil 1, thereby avoiding the problem of the return air of the machine room being heated in reverse by the water coil 1.

[0065] 5) Topology five

[0066] Figure 6 This is a schematic diagram of the structural composition of the sixth embodiment 600 of the water-fluorine dual-coil air conditioning system described in this disclosure. Figure 6 As shown, it may include: water coil 1, refrigerant coil 2, compressor 3, water-refrigerant heat exchanger 4, electronic expansion valve 5, water coil two-way valve 6, fan 7, water coil bypass valve 8, water-refrigerant heat exchanger bypass valve 9, water-refrigerant heat exchanger two-way valve 10, and series-parallel switching valve 11.

[0067] It can be seen that, compared to Figure 2 The water-fluorine dual-coil air conditioning system 200 and 600 shown further include a water coil bypass valve 8, a water-fluorine heat exchanger bypass valve 9, a water-fluorine heat exchanger two-way valve 10, and a series-parallel switching valve 11.

[0068] Figure 6 Under the topology shown, the series-parallel connection of water coil 1 and refrigerant coil 2 can be flexibly switched. Specifically, when the series-parallel switching valve 11 is open, water coil 1 and refrigerant coil 2 are connected in series, and when the series-parallel switching valve 11 is closed, water coil 1 and refrigerant coil 2 are connected in parallel.

[0069] Water coil bypass valve 8 is used to control whether to short-circuit water coil 1, water-fluorine heat exchanger bypass valve 9 is used to control whether to short-circuit water-fluorine heat exchanger 4, and water-fluorine heat exchanger two-way valve 10 is used to control whether water flow enters water-fluorine heat exchanger 4.

[0070] When the water coil 1 and the refrigerant coil 2 are connected in series, the water-refrigerant dual-coil air conditioning system 600 can operate in three different modes depending on the inlet water temperature of the water coil 1. The modes include natural cooling operation mode, mixed operation mode and compressor operation mode.

[0071] When the inlet water temperature of water coil 1 is lower than the supply air temperature of the computer room, the water-fluorine dual-coil air conditioning system 600 can be in natural cooling operation mode. At this time, the compressor 3, water coil bypass valve 8 and water-fluorine heat exchanger two-way valve 10 are closed, while the water-fluorine heat exchanger bypass valve 9 and water coil two-way valve 6 are opened. The water-fluorine heat exchanger 4 is short-circuited through the water-fluorine heat exchanger bypass valve 9, and the flow rate of water in water coil 1 can be controlled by adjusting the opening of the water coil two-way valve 6. The hot air in the computer room is cooled by water coil 1 and then sent out by fan 7.

[0072] When the inlet water temperature of water coil 1 is higher than the supply air temperature of the computer room but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 600 can be in mixed operation mode. At this time, the compressor 3 and the two-way valve 6 of the water coil are open, while the two-way valve 10 of the water-refrigerant heat exchanger, the bypass valve 9 of the water-refrigerant heat exchanger, and the bypass valve 8 of the water coil are closed. The hot air in the computer room is cooled by passing through water coil 1 and refrigerant coil 2 in sequence and then sent out by fan 7. That is, the hot air is first pre-cooled by water coil 1 and then cooled to the supply air temperature by refrigerant coil 2 before being sent out by fan 7.

[0073] When the inlet water temperature of water coil 1 is higher than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 600 can be in compressor operation mode. The compressor 3, water coil bypass valve 8 and water coil two-way valve 6 are opened, and water coil 1 is short-circuited through water coil bypass valve 8. Water-refrigerant heat exchanger two-way valve 10 and water-refrigerant heat exchanger bypass valve 9 are closed. The hot air in the computer room is cooled through refrigerant coil 2 and then sent out through fan 7, thereby avoiding the return air in the computer room being reverse-heated by water coil 1.

[0074] It can be seen that when the water coil 1 and the refrigerant coil 2 are connected in series, the two-way valve 10 of the water-refrigerant heat exchanger is always closed. When the inlet water temperature of the water coil 1 is higher than the supply air temperature of the machine room but lower than the return air temperature of the machine room, the water flow in the water-refrigerant heat exchanger 4 is the water flow from the water coil 1. When the inlet water temperature of the water coil 1 is higher than the return air temperature of the machine room, the water flow in the water-refrigerant heat exchanger 4 is the water flow from the water coil bypass valve 8 after short-circuiting the water coil 1.

[0075] When the water coil 1 and the refrigerant coil 2 are connected in parallel, the water-refrigerant dual-coil air conditioning system 600 can operate in three different modes depending on the inlet water temperature of the water coil 1. The modes include natural cooling operation mode, mixed operation mode and compressor operation mode.

[0076] When the inlet water temperature of water coil 1 is lower than the supply air temperature of the computer room, the water-fluorine dual-coil air conditioning system 600 can be in natural cooling operation mode. The compressor 3, the water-fluorine heat exchanger two-way valve 10 and the water coil bypass valve 8 are closed, while the water-fluorine heat exchanger bypass valve 9 and the water coil two-way valve 6 are opened. The water-fluorine heat exchanger 4 is short-circuited through the water-fluorine heat exchanger bypass valve 9, and the flow rate of water in water coil 1 can be controlled by adjusting the opening of the water coil two-way valve 6. The hot air in the computer room is cooled by water coil 1 and then sent out by fan 7.

[0077] When the inlet water temperature of water coil 1 is higher than the supply air temperature of the computer room but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 600 can operate in mixed mode. At this time, compressor 3, water-refrigerant heat exchanger two-way valve 10, and water coil two-way valve 6 are open, and water flows into water coil 1 and water-refrigerant heat exchanger 4 respectively. Water-refrigerant heat exchanger bypass valve 9 and water coil bypass valve 8 are closed. The hot air in the computer room is cooled by passing through water coil 1 and refrigerant coil 2 in sequence before being sent out by fan 7. That is, the water inlet is divided into two parts: one part enters water coil 1, and the other part enters water-refrigerant heat exchanger 4 to condense gaseous refrigerant into liquid refrigerant. The hot air in the computer room is first pre-cooled by water coil 1, and then cooled to the supply air temperature by refrigerant coil 2 before being sent out by fan 7.

[0078] When the inlet water temperature of water coil 1 is higher than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system 600 can be in compressor operation mode. At this time, compressor 3 and water-refrigerant heat exchanger two-way valve 10 are open, water coil two-way valve 6 and water-refrigerant heat exchanger bypass valve 9 are closed, there is no water flow in water coil 1, and the hot air in the computer room is cooled by refrigerant coil 2 and then sent out by fan 7, thereby avoiding the return air in the computer room being reverse-heated by water coil 1.

[0079] Figure 6 The topology shown can be compatible with both series and parallel structures between water coil 1 and refrigerant coil 2, thus meeting the needs of different scenarios and taking into account the advantages of the series and parallel structures mentioned above.

[0080] In summary, the present disclosure innovatively proposes a variety of water-refrigerant dual-coil air conditioning systems with different topologies. Through the coordinated operation of the water coil and the refrigerant coil, the system can achieve efficient utilization of natural cold sources and precise adaptation of cooling modes, significantly reducing compressor operating time and thus significantly reducing energy consumption. Moreover, each topology has its unique advantages, and users can flexibly choose the topology to use according to their actual needs to achieve optimal matching.

[0081] Furthermore, the refrigerant in the fluorinated coils described in this disclosure can be Freon. Freon, as a refrigerant, possesses numerous advantages such as high-efficiency phase-change refrigeration capability, precise temperature control, rapid response to load changes, compact and lightweight system design, and suitability for high-density heat dissipation requirements. Therefore, Freon can be used as the refrigerant in the scheme described in this disclosure. However, in practical implementation, other feasible refrigerants such as hydrofluoroolefins can also be used besides Freon.

[0082] Figure 7 This is a schematic diagram of the structural composition of the data center embodiment 700 described in this disclosure. Figure 7 As shown, it includes: computer room 701 and water-fluorine dual-coil air conditioning system 702.

[0083] Server room 701 is a dedicated physical space within data center 700 used to house IT equipment. The IT equipment in server room 701 generates a significant amount of heat, requiring an air conditioning system for cooling to ensure stable operation. In this embodiment, the air conditioning system can be a water-refrigerant dual-coil air conditioning system 702. Specifically, the water-refrigerant dual-coil air conditioning system 702 can be... Figures 1-6 The water-refrigerant dual-coil air conditioning system shown in any of the figures can achieve efficient utilization of natural cold sources and precise adaptation of cooling modes through the coordinated operation of water coils and refrigerant coils.

[0084] The solutions described in this disclosure can be applied to the field of artificial intelligence, particularly in areas such as cloud computing, data center thermal management, and cooling technology. Artificial intelligence is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It involves both hardware and software technologies. Artificial intelligence hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. Artificial intelligence software technologies mainly include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0085] It is understood that the terms "first" and "second" in the embodiments of this disclosure are only used for distinction and do not indicate the degree of importance or the order of events.

[0086] It is understood that in the embodiments of this disclosure, the orientation or positional relationship indicated by "up", "down", "left", "right", "front", "back", "inner", "outer", "top", "bottom", "vertical", "horizontal", etc., is based on the orientation or positional relationship shown in the accompanying drawings, and is only used to illustrate the relative positional relationship between the components or components, and does not particularly limit the specific installation orientation of each component or component.

[0087] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0088] Furthermore, the terms "installation," "setting," "equipped with," "contained," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0089] Furthermore, the shapes, structures, proportions, sizes, etc., drawn in the accompanying drawings of this disclosure are only used to complement the content disclosed in the specification, so that those skilled in the art can understand and read them, and are not intended to limit the conditions under which this disclosure can be implemented. Any modification of shape or structure, change of proportion or adjustment of size, without affecting the effects and purposes that this disclosure can produce, shall still fall within the scope of the technical content disclosed in this disclosure.

[0090] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A water-fluorine dual-coil air conditioning system, comprising: Water coils, refrigerant coils, and fans; The medium flowing in the water coil is water, the medium flowing in the refrigerant coil is a refrigerant other than water, and the fan is used to provide power for air circulation in the computer room. The hot air in the computer room is cooled by the water coil and / or the refrigerant coil before being sent out by the fan.

2. The water-fluorine dual-coil air conditioning system according to claim 1 further includes: Compressor, water-fluorine heat exchanger, electronic expansion valve, and water coil two-way valve; The compressor is used to pressurize the gaseous refrigerant from the fluorine coil and supply it to the water-fluorine heat exchanger. The gaseous refrigerant is produced by the vaporization of liquid refrigerant after absorbing heat. The water-fluorine heat exchanger is used to condense the gaseous refrigerant into the liquid refrigerant through water flow; The electronic expansion valve is used to return the liquid refrigerant to the refrigerant coil and to regulate the flow rate of the liquid refrigerant in the refrigerant coil. The two-way valve for the water coil is used to regulate the flow rate of water in the water coil.

3. The water-fluorine dual-coil air conditioning system according to claim 2, wherein, The water coil and the fluorine coil are connected in series. When the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in natural cooling operation mode, the compressor is turned off, the two-way valve of the water coil is opened, and the hot air is cooled by the water coil and then sent out by the fan. When the inlet water temperature is higher than the supply air temperature, the water-refrigerant dual-coil air conditioning system is in a mixed operation mode. The compressor and the two-way valve of the water coil are opened, and the hot air is cooled by passing through the water coil and the refrigerant coil in sequence before being sent out by the fan.

4. The water-fluorine dual-coil air conditioning system according to claim 2 further includes: A water coil bypass valve, wherein the water coil and the refrigerant coil are connected in series; The water coil bypass valve is used to control whether the water coil is short-circuited; When the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in natural cooling operation mode. The compressor and the bypass valve of the water coil are closed, the two-way valve of the water coil is opened, and the hot air is cooled by the water coil and then sent out by the fan. When the inlet water temperature is higher than the supply air temperature but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in a mixed operation mode. The compressor and the water coil two-way valve are open, the water coil bypass valve is closed, and the hot air is cooled by passing through the water coil and the refrigerant coil in sequence before being sent out by the fan. When the inlet water temperature is higher than the return air temperature, the water-refrigerant dual-coil air conditioning system is in compressor operation mode. The compressor, the water coil bypass valve, and the water coil two-way valve are opened. The water coil is short-circuited through the water coil bypass valve. The hot air is cooled by the refrigerant coil and then sent out by the fan.

5. The water-fluorine dual-coil air conditioning system according to claim 2 further includes: A bypass valve for a water-fluorine heat exchanger, wherein the water coil and the fluorine coil are connected in series; The bypass valve of the water-fluoride heat exchanger is used to control whether the water-fluoride heat exchanger is short-circuited. When the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-fluorine dual-coil air conditioning system is in natural cooling operation mode, the compressor is turned off, the bypass valve of the water-fluorine heat exchanger is opened, the water-fluorine heat exchanger is short-circuited through the bypass valve, the two-way valve of the water coil is opened, and the hot air is cooled through the water coil and then sent out through the fan. When the inlet water temperature is higher than the supply air temperature, the water-fluorine dual-coil air conditioning system is in a mixed operation mode. The compressor and the two-way valve of the water coil are open, the bypass valve of the water-fluorine heat exchanger is closed, and the hot air is cooled by passing through the water coil and the fluorine coil in sequence before being sent out by the fan.

6. The water-fluorine dual-coil air conditioning system according to claim 2 further includes: A two-way valve for a water-fluorine heat exchanger, wherein the water coil and the fluorine coil are connected in parallel; The two-way valve of the water-fluoride heat exchanger is used to control whether water flows into the water-fluoride heat exchanger. When the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-fluorine dual-coil air conditioning system is in natural cooling operation mode. The compressor and the two-way valve of the water-fluorine heat exchanger are closed, the two-way valve of the water coil is opened, and the hot air is cooled by the water coil and then sent out by the fan. When the inlet water temperature is higher than the supply air temperature but lower than the return air temperature of the computer room, the water-fluorine dual-coil air conditioning system is in a mixed operation mode. The compressor, the two-way valve of the water-fluorine heat exchanger, and the two-way valve of the water coil are opened. The water flows into the water coil and the water-fluorine heat exchanger respectively. The hot air is cooled by passing through the water coil and the fluorine coil in sequence and then sent out by the fan. When the inlet water temperature is higher than the return air temperature, the water-fluorine dual-coil air conditioning system is in compressor operation mode, the water coil two-way valve is closed, and the compressor and the water-fluorine heat exchanger two-way valves are open. The hot air is cooled by the fluorine coil and then sent out by the fan.

7. The water-fluorine dual-coil air conditioning system according to claim 2 further includes: Two-way valve for water-fluoride heat exchanger, bypass valve for water-fluoride heat exchanger, bypass valve for water coil, and series-parallel switching valve; When the series-parallel switching valve is open, the water coil and the refrigerant coil are connected in series; when the series-parallel switching valve is closed, the water coil and the refrigerant coil are connected in parallel. The water coil bypass valve is used to control whether to short-circuit the water coil; the water-fluoride heat exchanger bypass valve is used to control whether to short-circuit the water-fluoride heat exchanger; the water-fluoride heat exchanger two-way valve is used to control whether water flows into the water-fluoride heat exchanger.

8. The water-fluorine dual-coil air conditioning system according to claim 7, wherein, When the water coil and the refrigerant coil are connected in series, and the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in natural cooling operation mode. The compressor, the water coil bypass valve, and the water-refrigerant heat exchanger two-way valve are closed, while the water-refrigerant heat exchanger bypass valve and the water coil two-way valve are open. The water-refrigerant heat exchanger is short-circuited through the water-refrigerant heat exchanger bypass valve, and the hot air is cooled by the water coil and then sent out by the fan. When the water coil and the refrigerant coil are connected in series, and the inlet water temperature is higher than the supply air temperature but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in a mixed operation mode. The compressor and the two-way valve of the water coil are open, while the two-way valve of the water-refrigerant heat exchanger, the bypass valve of the water-refrigerant heat exchanger, and the bypass valve of the water coil are closed. The hot air is cooled by passing through the water coil and the refrigerant coil in sequence and then sent out by the fan. When the water coil and the refrigerant coil are connected in series, and the inlet water temperature is higher than the return air temperature, the water-refrigerant dual-coil air conditioning system is in compressor operation mode. The compressor, the water coil bypass valve, and the water coil two-way valve are opened, and the water coil is short-circuited through the water coil bypass valve. The water-refrigerant heat exchanger two-way valve and the water-refrigerant heat exchanger bypass valve are closed. The hot air is cooled by the refrigerant coil and then sent out by the fan.

9. The water-fluorine dual-coil air conditioning system according to claim 7, wherein, When the water coil and the refrigerant coil are connected in parallel, and the inlet water temperature of the water coil is lower than the supply air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in natural cooling operation mode. The compressor, the two-way valve of the water-refrigerant heat exchanger, and the bypass valve of the water coil are closed, while the bypass valve of the water-refrigerant heat exchanger and the two-way valve of the water coil are open. The water-refrigerant heat exchanger is short-circuited through the bypass valve, and the hot air is cooled by the water coil and then sent out by the fan. When the water coil and the refrigerant coil are connected in parallel, and the inlet water temperature is higher than the supply air temperature but lower than the return air temperature of the computer room, the water-refrigerant dual-coil air conditioning system is in a mixed operation mode. The compressor, the two-way valve of the water-refrigerant heat exchanger, and the two-way valve of the water coil are open, and the water flows into the water coil and the water-refrigerant heat exchanger respectively. The bypass valve of the water-refrigerant heat exchanger and the bypass valve of the water coil are closed. The hot air passes through the water coil and the refrigerant coil in sequence to be cooled before being sent out by the fan. When the water coil and the refrigerant coil are connected in parallel, and the inlet water temperature is higher than the return air temperature, the water-refrigerant dual-coil air conditioning system is in compressor operation mode. The compressor and the two-way valve of the water-refrigerant heat exchanger are open, and the two-way valve of the water coil and the bypass valve of the water-refrigerant heat exchanger are closed. The hot air is cooled by the refrigerant coil and then sent out by the fan.

10. A data center, comprising: The computer room and the water-fluorine dual-coil air conditioning system as described in any one of claims 1-9.

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