Brayton-type carnot cell cogeneration system coupled with data center liquid cooling

Abstract

The application discloses a kind of with the data center liquid cooling coupling's brayton type Carnot cell cold electricity combined supply system, comprising: data center liquid cooling loop;Reverse brayton cycle subsystem, reverse brayton cycle subsystem at least includes reverse brayton cycle loop;First heat exchanger, reverse brayton cycle loop and data center liquid cooling loop heat exchange by first heat exchanger;First intermediate circuit;Second heat exchanger, first intermediate circuit and reverse brayton cycle loop heat exchange by second heat exchanger;Positive brayton cycle subsystem, positive brayton cycle subsystem at least includes positive brayton cycle loop;Third heat exchanger, first intermediate circuit and data center liquid cooling loop heat exchange by third heat exchanger.The brayton type Carnot cell cold electricity combined supply system coupled with the data center liquid cooling of embodiment of the application can meet the continuous cooling demand of data center, with the advantages such as high energy comprehensive utilization rate, strong applicability.

Description

Technical Field

[0001] This invention relates to the field of thermal energy storage technology, and more specifically, to a Brayton-type Carnot battery combined cooling and power system coupled with liquid cooling in a data center. Background Technology

[0002] As data centers continue to expand, their high electrical load, continuous operation, and constant cooling requirements lead to a clear coupling between cooling and electrical loads. This is especially true in liquid-cooled data centers, where boundary conditions such as supply water temperature, return water temperature, circulation flow rate, and heat exchange temperature difference are well-defined, placing higher demands on the configuration design and operational control of the power supply system.

[0003] Carnot batteries are thermal energy storage systems that convert heat energy into electrical energy by coupling heat pump cycles and heat engine cycles. The reverse Brayton cycle can generate low-temperature cold energy and achieve heat generation through compression and expansion processes, while the forward Brayton cycle can absorb heat from a high-temperature heat source to do work and output mechanical work or electrical energy.

[0004] The Carnot batteries or Brayton-type thermal systems in related technologies are geared towards general energy storage, thermoelectric conversion, or single power generation scenarios. They only focus on cycle efficiency or power generation capacity and have not been applied to data centers, nor have they considered engineering compatibility with data centers. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a Brayton-type Carnot battery combined cooling and power system coupled to liquid cooling in a data center. This Brayton-type Carnot battery combined cooling and power system coupled to liquid cooling in a data center can meet the continuous cooling needs of the data center and has the advantages of high energy utilization efficiency and strong applicability.

[0006] To achieve the above objectives, according to an embodiment of the first aspect of the present invention, a Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system is provided. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system includes: a data center liquid cooling loop; a reverse Brayton cycle subsystem, the reverse Brayton cycle subsystem including at least a reverse Brayton cycle loop; a first heat exchanger, through which the reverse Brayton cycle loop and the data center liquid cooling loop exchange heat; a first intermediate loop; a second heat exchanger, through which the first intermediate loop and the reverse Brayton cycle loop exchange heat; a positive Brayton cycle subsystem, the positive Brayton cycle subsystem including at least a positive Brayton cycle loop; and a third heat exchanger, through which the first intermediate loop and the data center liquid cooling loop exchange heat.

[0007] The Brayton-type Carnot battery combined cooling and power system coupled to a data center according to embodiments of the present invention can meet the continuous cooling needs of the data center and has the advantages of high energy utilization rate and strong applicability.

[0008] In addition, the Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the reverse Brayton cycle loop and the data center liquid cooling loop exchange heat directly through the first heat exchanger.

[0009] According to one embodiment of the present invention, the reverse Brayton cycle subsystem includes: a reverse Brayton cycle loop; a reverse Brayton cycle compressor connected to the reverse Brayton cycle loop; a reverse Brayton cycle expander connected to the reverse Brayton cycle loop; and an electric motor connected to the reverse Brayton cycle compressor.

[0010] According to one embodiment of the present invention, the first heat exchanger is located between the outlet of the reverse Brayton cycle expander and the inlet of the reverse Brayton cycle compressor, and the second heat exchanger is located between the outlet of the reverse Brayton cycle compressor and the inlet of the reverse Brayton cycle expander.

[0011] According to one embodiment of the present invention, the positive Brayton cycle subsystem includes: a positive Brayton cycle loop; a positive Brayton cycle compressor connected to the positive Brayton cycle loop; a positive Brayton cycle expander connected to the positive Brayton cycle loop; and a generator connected to the positive Brayton cycle expander in a driving connection.

[0012] According to one embodiment of the present invention, the third heat exchanger is located between the outlet of the positive Brayton cycle compressor and the inlet of the positive Brayton cycle expander.

[0013] According to one embodiment of the present invention, the Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system further includes: a thermal storage device connected to the first intermediate loop; a cold storage device connected to the first intermediate loop; a second heat exchanger located between the outlet of the cold storage device and the inlet of the thermal storage device; and a third heat exchanger located between the outlet of the thermal storage device and the inlet of the cold storage device.

[0014] According to one embodiment of the present invention, the Brayton-type Carnot battery combined cooling and power system coupled to the data center liquid cooling further includes: a second intermediate loop, wherein the cold storage device is connected to the second intermediate loop; and a fourth heat exchanger, wherein the second intermediate loop and the data center liquid cooling loop exchange heat through the fourth heat exchanger.

[0015] According to one embodiment of the present invention, the data center liquid cooling circuit includes: a first liquid cooling sub-circuit, which exchanges heat with the reverse Brayton cycle circuit through a first heat exchanger; and a second liquid cooling sub-circuit, which exchanges heat with the second intermediate circuit through a fourth heat exchanger.

[0016] According to one embodiment of the present invention, the working fluid in the inverse Brayton cycle and the positive Brayton cycle is helium.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a Brayton-type Carnot battery combined cooling and power system coupled to a data center according to an embodiment of the present invention.

[0019] Figure reference numerals: Brayton-type Carnot battery combined cooling and power system coupled to data center 1, first liquid cooling sub-loop 11, second liquid cooling sub-loop 12, reverse Brayton cycle loop 21, reverse Brayton cycle compressor 22, reverse Brayton cycle expander 23, electric motor 24, first heat exchanger 30, first intermediate loop 40, second heat exchanger 50, positive Brayton cycle loop 61, positive Brayton cycle compressor 62, positive Brayton cycle expander 63, generator 64, third heat exchanger 70, thermal storage device 81, cold storage device 82, second intermediate loop 90, fourth heat exchanger 100, data center 2. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The Brayton-type Carnot battery combined cooling and power system 1, which is liquid-cooled and coupled to a data center, according to an embodiment of the present invention, is described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, the Brayton-type Carnot battery combined cooling and power system 1 coupled to a data center liquid cooling system according to an embodiment of the present invention includes a data center liquid cooling loop, a reverse Brayton cycle subsystem, a first heat exchanger 30, a first intermediate loop 40, a second heat exchanger 50, a positive Brayton cycle subsystem, and a third heat exchanger 70.

[0024] The reverse Brayton cycle subsystem includes at least a reverse Brayton cycle loop 21. The reverse Brayton cycle loop 21 and the data center liquid cooling loop exchange heat through a first heat exchanger 30. The first intermediate loop 40 and the reverse Brayton cycle loop 21 exchange heat through a second heat exchanger 50. The positive Brayton cycle subsystem includes at least a positive Brayton cycle loop 61. The first intermediate loop 40 and the data center liquid cooling loop exchange heat through a third heat exchanger 70.

[0025] Specifically, the reverse Brayton cycle subsystem may further include a reverse Brayton cycle compressor 22, a reverse Brayton cycle expander 23, and an electric motor 24, while the positive Brayton cycle subsystem may further include a positive Brayton cycle compressor 62, a positive Brayton cycle expander 63, and a generator 64.

[0026] The first intermediate circuit 40 can be connected to a heat storage device 81 and a cold storage device 82.

[0027] The heat storage device 81 is used to receive the heat released from the hot end of the inverse Brayton cycle subsystem and provide high-temperature heat input to the positive Brayton cycle subsystem.

[0028] The first heat exchanger 30 is used to absorb heat from the return water of the data center liquid cooling loop of data center 2 and output available cooling capacity to the data center liquid cooling loop to meet its cooling needs. The second heat exchanger 50 is connected to the heat storage device 81 through the first intermediate loop 40 and is used to release the heat increased by the compressed working fluid on the heat pump side to the heat storage device 81 to achieve the increase of heat temperature.

[0029] The third heat exchanger 70 of the positive Brayton cycle subsystem is connected to the heat storage device 81 via the first intermediate loop 40, and is used to heat the working fluid on the heat engine side using the high-temperature heat provided by the heat storage device 81. The heated working fluid on the heat engine side enters the positive Brayton cycle expander 63 to expand and do work. The mechanical work generated drives the generator 64 to generate electricity, so as to realize the power generation output of the system under cooling conditions.

[0030] The cold storage device 82 is connected to the second intermediate loop 90. The second intermediate loop 90 exchanges heat with the data center liquid cooling loop through the fourth heat exchanger 100 to transfer the cold energy generated on the low-temperature side of the system to the data center liquid cooling loop, thereby meeting the continuous cooling requirements of the equipment in the data center 2 during operation.

[0031] The Brayton-type Carnot battery combined cooling and power system 1 may also include a controller, which is electrically connected to the reverse Brayton cycle compressor 22, the reverse Brayton cycle expander 23, the positive Brayton cycle compressor 62, the positive Brayton cycle expander 63, the first heat exchanger 30, the second heat exchanger 50, the third heat exchanger 70, and the fourth heat exchanger 100, respectively. The controller is used to coordinately adjust the compressor pressure ratio on the heat pump side, the expander pressure ratio on the heat engine side, the circulating working fluid flow rate, and the heat exchange parameters based on the supply water temperature, return water temperature, cooling water flow rate, and minimum heat exchange temperature difference of the data center liquid cooling circuit.

[0032] The system obtains the supply water temperature, return water temperature, cooling water flow rate, and minimum heat exchange temperature difference requirements of the data center liquid cooling loop, and uses these as the system's operating boundary conditions. The reverse Brayton cycle loop 21 operates, causing the first heat exchanger 30 to absorb heat from the return water of the data center liquid cooling loop and output usable cooling capacity to the data center liquid cooling loop to meet cooling requirements. The second heat exchanger 50 inputs the heat released from the hot end of the reverse Brayton cycle loop 21 into the heat storage device 81 to raise the heat level and establish a heat coupling path between the hot side and the heat engine side. The forward Brayton cycle loop 61 absorbs heat using the high-temperature heat provided by the heat storage device 81, and the forward Brayton cycle expander 63 drives the generator 64 to generate electricity. Under the premise of meeting the cooling requirements of the data center liquid cooling loop, the controller coordinates the compressor pressure ratio, expander pressure ratio, circulating working fluid flow rate, and heat exchange parameters to adjust the matching relationship between the system's cooling capacity and power generation capacity, and improve the overall system performance.

[0033] like Figure 1 As shown, the working fluid state points of the reverse Brayton cycle loop 21 are defined sequentially as A1, A2, A3, and A4, where A1 is the outlet state point of the reverse Brayton cycle expander 23, A2 is the outlet state point of the first heat exchanger 30, A3 is the outlet state point of the positive Brayton cycle compressor 62, and A4 is the outlet state point of the second heat exchanger 50. The working fluid enters the first heat exchanger 30 from A1, exchanges heat with the data center liquid cooling loop to reach A2, then enters the reverse Brayton cycle compressor 22 for compression and heating to A3, then enters the second heat exchanger 50 to release heat to the heat storage device 81 and reaches A4, and finally enters the reverse Brayton cycle expander 23 for expansion and cooling before returning to A1, completing the reverse Brayton heat pump cycle.

[0034] The working fluid state points of the positive Brayton cycle loop 61 are defined sequentially as B1, B2, B3, and B4, where B1 is the inlet state point of the positive Brayton cycle compressor 62, B2 is the outlet state point of the positive Brayton cycle compressor 62, B3 is the outlet state point of the third heat exchanger 70, and B4 is the outlet state point of the positive Brayton cycle expander 63. The working fluid enters the positive Brayton cycle compressor 62 from B1 and is compressed to B2. It then enters the third heat exchanger 70 to absorb high-temperature heat from the heat storage device 81 and is heated to B3. Next, it enters the positive Brayton cycle expander 63 to expand and perform work to B4. Finally, after cooling, it returns to B1, completing the positive Brayton heat engine cycle.

[0035] By using the supply water temperature, return water temperature, cooling water flow rate, and minimum heat exchange temperature difference of the data center liquid cooling loop as operating boundary conditions, the cooling requirements of the data center are guaranteed to be met. Based on meeting these cooling boundary conditions, the positive Brayton cycle subsystem is controlled to absorb heat and perform work while generating electricity, thereby achieving coordinated operation of cooling and power generation for data center liquid cooling scenarios. This establishes a clear correspondence between the system's cold-end output and the actual liquid cooling requirements of the data center, enabling system operation while prioritizing the stable cooling needs of the data center. Therefore, it exhibits good boundary adaptability and engineering feasibility.

[0036] Figure 1 Middle arrow W HP This indicates external power input, which serves as the driving power for the inverse Brayton cycle subsystem. (Arrow) W Brayton This indicates that the output power of the positive Brayton cycle subsystem is converted into electrical energy by generator 64.

[0037] The reverse Brayton cycle subsystem mainly undertakes the functions of cooling and heating. It operates in conjunction with the reverse Brayton cycle compressor 22 and the reverse Brayton cycle expander 23, so that the working fluid absorbs heat on the low-temperature side and releases heat on the high-temperature side. The positive Brayton cycle subsystem mainly undertakes the function of heat absorption and power generation. It operates in conjunction with the positive Brayton cycle compressor 62 and the positive Brayton cycle expander 63, so that the working fluid absorbs high-temperature heat, expands and does work, and drives the generator 64 to generate electricity. The first intermediate loop 40, the heat storage device 81, the cold storage device 82, and the fourth heat exchanger 100 serve as the cold and heat coupling and load interface, enabling the entire system to simultaneously meet the high-temperature heat storage requirements and the liquid cooling requirements of the data center 2, ultimately forming a combined cooling and power system for the liquid cooling scenario of the data center 2.

[0038] According to an embodiment of the present invention, the Brayton-type Carnot battery combined cooling and power system 1 coupled with data center liquid cooling can directly apply the Brayton-type Carnot battery system to the liquid cooling scenario of data center 2 by exchanging heat between the reverse Brayton cycle loop 21 and the data center liquid cooling loop through the first heat exchanger 30. This establishes a coupling relationship between the cold end of the reverse Brayton cycle subsystem and the data center liquid cooling loop, thereby enabling this type of system to no longer be limited to general energy storage or single power generation purposes, but to form a combined cooling and power system for the continuous cooling needs of data center 2, thus improving the system's adaptability to data center application scenarios.

[0039] Furthermore, by exchanging heat through the first intermediate loop 40 and the reverse Brayton cycle loop 21 via the second heat exchanger 50, and by exchanging heat through the first intermediate loop 40 and the data center liquid cooling loop via the third heat exchanger 70, the reverse Brayton cycle subsystem and the positive Brayton cycle subsystem can be coupled. This allows the reverse Brayton cycle subsystem to simultaneously perform cooling and heat enhancement functions, while the positive Brayton cycle subsystem performs heat absorption and power generation functions. This achieves coordinated operation of cooling and power generation, improving the overall energy utilization level of the system.

[0040] Furthermore, by coordinating the adjustment of the inverse Brayton cycle subsystem and the positive Brayton cycle subsystem, the power generation capacity and overall system performance can be further optimized while meeting the cooling needs of data center 2, which has good engineering application value.

[0041] Therefore, the Brayton-type Carnot battery combined cooling and power system 1 coupled with liquid cooling of the data center according to the embodiments of the present invention can meet the continuous cooling needs of the data center and has the advantages of high energy utilization rate and strong applicability.

[0042] The following description, with reference to the accompanying drawings, describes a Brayton-type Carnot battery combined cooling and power system 1, which is liquid-cooled and coupled to a data center, according to a specific embodiment of the present invention.

[0043] In some specific embodiments of the present invention, such as Figure 1 As shown, the Brayton-type Carnot battery combined cooling and power system 1 coupled to a data center liquid cooling system according to an embodiment of the present invention includes a data center liquid cooling loop, a reverse Brayton cycle subsystem, a first heat exchanger 30, a first intermediate loop 40, a second heat exchanger 50, a positive Brayton cycle subsystem, and a third heat exchanger 70.

[0044] Advantageously, such as Figure 1 As shown, the reverse Brayton loop 21 and the data center liquid cooling loop exchange heat directly through the first heat exchanger 30. It's important to understand that "direct heat exchange" means exchanging heat directly without any other heat exchange structures, relying solely on the first heat exchanger 30. This reduces indirect heat exchange consumption and losses, improves heat exchange efficiency, and facilitates the absorption of heat from the return water of the data center liquid cooling loop and the output of usable cooling capacity to meet its cooling requirements.

[0045] Specifically, such as Figure 1As shown, the reverse Brayton cycle subsystem includes a reverse Brayton cycle loop 21, a reverse Brayton cycle compressor 22, a reverse Brayton cycle expander 23, and an electric motor 24. The reverse Brayton cycle compressor 22 is connected to the reverse Brayton cycle loop 21. The reverse Brayton cycle expander 23 is also connected to the reverse Brayton cycle loop 21. The electric motor 24 is driven by the reverse Brayton cycle compressor 22. This facilitates the configuration of the reverse Brayton cycle subsystem.

[0046] Furthermore, such as Figure 1 As shown, the first heat exchanger 30 is located between the outlet of the reverse Brayton cycle expander 23 and the inlet of the reverse Brayton cycle compressor 22, and the second heat exchanger 50 is located between the outlet of the reverse Brayton cycle compressor 22 and the inlet of the reverse Brayton cycle expander 23. This facilitates the first heat exchanger 30 to transfer the heat after heat exchange with the data center liquid cooling circuit to the reverse Brayton cycle compressor 22, and facilitates the second heat exchanger 50 to transfer the heat after compression and heating to the first intermediate circuit 40.

[0047] More specifically, such as Figure 1 As shown, the positive Brayton cycle subsystem includes a positive Brayton cycle loop 61, a positive Brayton cycle compressor 62, a positive Brayton cycle expander 63, and a generator 64. The positive Brayton cycle compressor 62 is connected to the positive Brayton cycle loop 61. The positive Brayton cycle expander 63 is connected to the positive Brayton cycle loop 61. The generator 64 is driven by the positive Brayton cycle expander 63. This facilitates the configuration of the positive Brayton cycle subsystem.

[0048] Furthermore, such as Figure 1 As shown, the third heat exchanger 70 is located between the outlet of the positive Brayton cycle compressor 62 and the inlet of the positive Brayton cycle expander 63. This facilitates the use of heat from the second intermediate loop 90 to drive the positive Brayton cycle expander 63 to perform work and generate electricity through the generator 64.

[0049] Advantageously, such as Figure 1 As shown, the Brayton-type Carnot battery combined cooling and power system 1, coupled with liquid cooling in a data center, also includes a thermal storage device 81 and a cold storage device 82. The thermal storage device 81 is connected to the first intermediate loop 40. The cold storage device 82 is connected to the first intermediate loop 40. A second heat exchanger 50 is located between the outlet of the cold storage device 82 and the inlet of the thermal storage device 81, and a third heat exchanger 70 is located between the outlet of the thermal storage device 81 and the inlet of the cold storage device 82. This facilitates the storage of both high-temperature and low-temperature thermal media, enabling continuous system operation.

[0050] More advantageously, such as Figure 1As shown, the Brayton-type Carnot battery combined cooling and power system 1, coupled with data center liquid cooling, also includes a second intermediate loop 90 and a fourth heat exchanger 100. A cold storage device 82 is connected to the second intermediate loop 90. The second intermediate loop 90 and the data center liquid cooling loop exchange heat through the fourth heat exchanger 100. This facilitates the transfer of the cold energy stored in the cold storage device 82 to the data center liquid cooling loop, thereby further facilitating the meeting of the continuous cooling requirements during the operation of the data center 2 equipment.

[0051] Furthermore, such as Figure 1 As shown, the data center liquid cooling circuit includes a first liquid cooling sub-circuit 11 and a second liquid cooling sub-circuit 12. The first liquid cooling sub-circuit 11 exchanges heat with the reverse Brayton cycle circuit 21 through a first heat exchanger 30. The second liquid cooling sub-circuit 12 exchanges heat with the second intermediate circuit 90 through a fourth heat exchanger 100. This facilitates the connection of the data center liquid cooling circuit to the first heat exchanger 30 and the fourth heat exchanger 100, respectively.

[0052] Optionally, helium is used as the working fluid in both the inverse Brayton cycle loop 21 and the positive Brayton cycle loop 61. This improves the stability of the working fluid and increases its temperature range.

[0053] In some embodiments, the low pressure on the reverse Brayton cycle subsystem side can be set to 1.05 MPa, and the high pressure can be set to 8 MPa; the low pressure on the positive Brayton cycle subsystem side can be set to 1.05 MPa, and the high pressure can be set to 3.5 MPa. The isentropic efficiency of the reverse Brayton cycle compressor 22 can be set to 0.92, and the isentropic efficiency of the reverse Brayton cycle expander 23 can be set to 0.95; the isentropic efficiency of the positive Brayton cycle compressor 62 can be set to 0.90, and the isentropic efficiency of the positive Brayton cycle expander 63 can be set to 0.95; the efficiency of the generator 64 can be set to 0.5.

[0054] The supply water temperature of the data center liquid cooling loop can be set to 323.15K, the return water temperature can be set to 333.15K, the cooling water flow rate can be set to 200kg / s, and the minimum heat exchange temperature difference can be set to 5K. The high-temperature side temperature of the heat storage unit can be set to 823.15K, and the return flow temperature can be set to 473.15K.

[0055] Other configurations and operations of the Brayton-type Carnot battery combined cooling and power system 1 coupled to a data center liquid cooling according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system, characterized in that, include: Data center liquid cooling loop; An inverse Brayton cycle subsystem, wherein the inverse Brayton cycle subsystem includes at least an inverse Brayton cycle loop; The first heat exchanger is used for heat exchange between the reverse Brayton cycle loop and the data center liquid cooling loop. First intermediate loop; The second heat exchanger is used for heat exchange between the first intermediate loop and the reverse Brayton cycle loop. A positive Brayton cycle subsystem, wherein the positive Brayton cycle subsystem includes at least a positive Brayton cycle loop; The third heat exchanger is used for heat exchange between the first intermediate loop and the data center liquid cooling loop.

2. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 1, characterized in that, The reverse Brayton cycle loop and the data center liquid cooling loop exchange heat directly through the first heat exchanger.

3. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 1, characterized in that, The inverse Brayton cycle subsystem includes: Inverse Brayton cycle; A reverse Brayton cycle compressor, wherein the reverse Brayton cycle compressor is connected to the reverse Brayton cycle circuit; A reverse Brayton cycle expander, wherein the reverse Brayton cycle expander is connected to the reverse Brayton cycle loop; An electric motor is connected to the reverse Brayton cycle compressor via a drive.

4. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 3, characterized in that, The first heat exchanger is located between the outlet of the reverse Brayton cycle expander and the inlet of the reverse Brayton cycle compressor, and the second heat exchanger is located between the outlet of the reverse Brayton cycle compressor and the inlet of the reverse Brayton cycle expander.

5. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 1, characterized in that, The positive Brayton cycle subsystem includes: Positive Brayton cycle; A positive Brayton cycle compressor, wherein the positive Brayton cycle compressor is connected to the positive Brayton cycle circuit; A positive Brayton cycle expander, wherein the positive Brayton cycle expander is connected to the positive Brayton cycle loop; A generator, which is connected in drive to the positive Brayton cycle expander.

6. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 5, characterized in that, The third heat exchanger is located between the outlet of the positive Brayton cycle compressor and the inlet of the positive Brayton cycle expander.

7. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 1, characterized in that, Also includes: A thermal storage device, wherein the thermal storage device is connected to the first intermediate circuit; A cold storage device is connected to the first intermediate loop, a second heat exchanger is located between the outlet of the cold storage device and the inlet of the heat storage device, and a third heat exchanger is located between the outlet of the heat storage device and the inlet of the cold storage device.

8. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 7, characterized in that, Also includes: The second intermediate circuit, wherein the cold storage device is connected to the second intermediate circuit; The fourth heat exchanger is used for heat exchange between the second intermediate loop and the data center liquid cooling loop.

9. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 8, characterized in that, The data center liquid cooling circuit includes: The first liquid-cooled sub-loop exchanges heat with the reverse Brayton cycle loop through the first heat exchanger. The second liquid-cooled sub-loop exchanges heat with the second intermediate loop through the fourth heat exchanger.

10. The Brayton-type Carnot battery combined cooling and power system coupled to a data center liquid cooling system according to claim 1, characterized in that, The working fluid in the inverse Brayton cycle and the positive Brayton cycle is helium.

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