Data center waste heat utilization system based on geothermal energy storage

Abstract

The utility model discloses a data center waste heat utilization system based on geothermal energy storage, which comprises a cold mass circulation unit used for cooling a data center, and the cold mass circulation unit exchanges heat with a heat absorption end of a refrigeration circulation unit. The heat release end of the refrigeration cycle unit performs selective heat exchange with the heat supply unit and the underground heat storage unit through the control unit, and the underground heat storage unit performs selective heat exchange with the heat supply unit through the control unit. The heat transfer system formed by the cold mass circulation unit and the refrigeration circulation unit can effectively absorb and transfer waste heat of the data center, efficient utilization of the waste heat of the data center is achieved, and therefore the energy utilization rate is improved. By means of the high-heat-storage shallow soil heat storage system, heat generated by the heat transfer system can be efficiently stored, heat can be preserved for a long time, and heat loss is reduced through the soil heat storage system.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery and utilization, and in particular to a data center waste heat utilization system based on geothermal energy storage. Background Art

[0002] In recent years, with the vigorous development of various new technologies, such as 5G mobile communications, cloud computing, big data, the Internet of Things, artificial intelligence, etc., the amount of information processing in data centers has been growing. At the same time, with the launch of China's national "East Data West Computing" strategy, data centers have become the focus of attention of the entire society. As the main carrier of computing power, data centers also face huge energy consumption problems. For traditional cooling systems in data centers, air cooling or liquid cooling is usually used. These methods not only cool the data center, but also cause a large amount of waste heat resources to be wasted. In addition, if the heat generated by the data center during operation cannot be effectively utilized, it will also cause thermal pollution to the surrounding environment and affect the ecological balance.

[0003] Therefore, how to achieve efficient utilization of waste heat from data center cooling systems is a technical problem that needs to be solved urgently.

[0004] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the present utility model, and should not be regarded as admitting or implying in any form that the above technical information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a data center waste heat utilization system based on geothermal energy storage, which solves the technical problem that the waste heat of the existing data center cooling system cannot be efficiently utilized.

[0006] The technical solution of this application is:

[0007] A data center waste heat utilization system based on geothermal energy storage includes a cold-mass circulation unit for cooling the data center, the cold-mass circulation unit performs heat exchange with the heat absorption end of a refrigeration circulation unit, the heat release end of the refrigeration circulation unit performs heat exchange with a heating unit and / or an underground heat storage unit, and the underground heat storage unit performs heat exchange with the heating unit.

[0008] Preferably, the cold mass circulation unit comprises a cold mass circulation pipe attached to the outside of the data center and / or inserted into the data center, and the cold mass in the cold mass circulation pipe circulates through the heat absorption end of the refrigeration circulation unit through a circulation pump.

[0009] Preferably, the refrigeration cycle unit comprises a compressor, a condenser, an expander and an evaporator connected in sequence, the evaporator is the heat absorption end, and the condenser is the heat release end.

[0010] Preferably, the underground heat storage unit includes an insulation warehouse buried underground, and high heat storage material is arranged in the soil enclosed by the insulation warehouse. Buried heat exchange pipes are arranged on the periphery of the high heat storage material, and the buried heat exchange pipes exchange heat with the heat absorption end and the heat supply unit respectively through branch pipes.

[0011] Preferably, the high heat storage material is pebbles.

[0012] Preferably, the high heat storage material is provided in several groups, and the buried heat exchange tubes connected in series are wound around the periphery of each group of high heat storage material.

[0013] Preferably, the buried heat exchange tube exchanges heat with the heat absorption end through a first heat circulation channel, exchanges heat with the heat supply unit through a third heat circulation channel, and exchanges heat between the heat supply end and the heat supply unit through a second heat circulation channel.

[0014] Preferably, a first circulation pump is provided on the first heat circulation channel, a second circulation pump is provided on the second heat circulation channel, and a third circulation pump is provided on the third heat circulation channel.

[0015] Preferably, the heat supply unit is connected to the underground heat storage unit and to the heat release end via a heat exchange system.

[0016] Preferably, the heat exchange system is a shell and tube heat exchanger.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. Efficient waste heat utilization: The utility model can effectively absorb and transfer the waste heat of the data center through the heat transfer system composed of the cold mass circulation unit and the refrigeration circulation unit, thereby realizing efficient utilization of the waste heat of the data center and improving energy utilization.

[0019] 2. Underground heat storage unit: The utility model uses a shallow soil heat storage system with high heat storage capacity to efficiently store the heat generated by the heat transfer system and keep it warm for a long time. This soil heat storage system not only reduces heat loss.

[0020] 3. Integrated energy management: The utility model can provide the heat stored in the shallow soil heat storage system with high heat storage or the heat directly generated by the data center to the heating unit through the heat exchange system. This integrated energy management method not only improves the energy utilization efficiency, but also reduces the energy consumption cost.

[0021] In summary, the utility model realizes efficient utilization of waste heat in the data center, reduces heating costs, and improves energy utilization by integrating earth energy storage and a comprehensive system for efficient utilization of waste heat in the data center, thus having significant beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the principle of the utility model;

[0024] Figure 2 It is a schematic diagram of the principle of the working method 1 of the utility model;

[0025] Figure 3 It is a schematic diagram of the principle of the working method 2 of the utility model;

[0026] Figure 4 It is a schematic diagram of the principle of the working method 3 of the utility model;

[0027] Figure 5 It is a schematic diagram of the principle of the working method 4 of the utility model;

[0028] Explanation of the accompanying drawings: 1. cold mass circulation unit, 2. evaporator, 3. compressor, 4. condenser, 5. expander, 6. insulation chamber, 7. buried heat exchange pipe, 8. underground heat storage unit, 9. high heat storage material, 10. heating unit, 11. second circulation pump, 12. circulation pump one, 13. first circulation pump, 14. third circulation pump, 15. three-way valve one, 16. three-way valve two, 17. valve one, 18. valve two, 19. valve three, 20. valve four, 21. valve five, 22. valve six, 23. heat exchange system, 24. first heat circulation channel, 25. second heat circulation channel, 26. third heat circulation channel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the core concept of the utility model and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0031] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "several" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like indicate positions or positional relationships only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0033] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the corresponding technologies, methods, and equipment should be considered part of the specification.

[0036] The utility model proposes a comprehensive system for efficiently utilizing waste heat from a data center that integrates earth energy storage. The system effectively absorbs and transfers waste heat from the data center through a heat transfer system to achieve cooling of the data center. This comprehensive system not only solves the problem of insufficient utilization of waste heat resources in the data center, but also stores heat through the soil, thereby reducing heat loss and improving energy utilization.

[0037] like Figure 1 As shown, the utility model includes a cold mass circulation unit 1 for cooling a data center. The cold mass circulating in the cold mass circulation unit 1 continuously cools the data center, that is, absorbs the heat generated by the data center by heat exchange.

[0038] The cold mass circulation unit 1 exchanges heat with the heat absorption end of the refrigeration circulation unit, that is, the coldness of the cold mass circulation unit 1 comes from the refrigeration circulation unit. The refrigeration circulation unit is an air-conditioning system widely used in the prior art. The difference is that the heat absorption end directly exchanges heat with the cold mass circulation unit 1. The exchange method can be carried out through various heat exchangers, which will not be repeated here.

[0039] The heat release end of the refrigeration cycle unit selectively exchanges heat with the heating unit 10 and the underground heat storage unit 8 through the control unit. That is, the heat released by the heat release end of the refrigeration cycle unit is not directly discharged into the atmosphere, but is reused, and the utilization methods include directly supplying heat to the heating unit 10, or storing it through the underground heat storage unit 8. The heating unit 10 can be any heat supply system, such as domestic hot water, floor heating system, factory hot water, etc.

[0040] The underground heat storage unit 8 performs selective heat exchange with the heating unit 10 through a control unit. When the heating unit 10 does not provide sufficient heat, or the underground heat storage unit 8 is saturated with energy, the underground heat storage unit 8 can supply heat to the heating unit 10, thereby avoiding heat waste and pollution.

[0041] On the basis of the above-mentioned embodiment, as a preferred implementation of the data center waste heat utilization system based on geothermal energy storage, the cold mass circulation unit 1 includes a cold mass circulation pipe attached to the outside of the data center and / or inserted in the data center, and the cold mass in the cold mass circulation pipe circulates through the heat absorption end of the refrigeration circulation unit through a circulation pump 12. That is, the cold mass circulation pipe can be attached to the periphery of the data center or inserted in the equipment interval of the data center, and the circulation pump 12 continuously pumps the cold mass, so that the cold mass is continuously cooled at the heat absorption end, and then continuously absorbs the heat generated by the data center.

[0042] On the basis of the above embodiment, as a preferred implementation of the data center waste heat utilization system based on geothermal energy storage, the refrigeration cycle unit includes a compressor 3, a condenser 4, an expander 5 and an evaporator 2 connected in sequence, the evaporator 2 is the heat absorption end, and the condenser 4 is the heat release end. Preferably, the heat absorption end exchanges heat with the cold mass circulation pipe through a heat exchanger, and the heat release end also exchanges heat with the heating unit 10 or the underground heat storage unit 8 through a heat exchanger.

[0043] On the basis of the above-mentioned embodiment, as a preferred implementation of the data center waste heat utilization system based on geothermal energy storage, the underground heat storage unit 8 includes an insulation bin 6 buried underground, and the soil enclosed by the insulation bin 6 is provided with a high heat storage material 9, and the high heat storage material 9 can be pebbles, etc., which can reduce heat loss and improve the original heat storage capacity of the soil. The outer periphery of the high heat storage material 9 is provided with an underground heat exchange pipe 7, and heat is transferred through the underground heat exchange pipe 7. The underground heat exchange pipe 7 exchanges heat with the heat absorption end and the heat supply unit 10 respectively through branch pipes.

[0044] Preferably, the high heat storage material 9 is provided with several groups, and the outer circumference of each group of high heat storage material 9 is wound with the buried heat exchange pipes 7 connected in series with each other, so as to perform heat exchange more efficiently.

[0045] On the basis of the above-mentioned embodiments, as a preferred implementation mode of the data center waste heat utilization system based on geothermal energy storage, the buried heat exchange pipe 7 exchanges heat with the heat absorption end through the first heat circulation channel 24, exchanges heat with the heating unit 10 through the third heat circulation channel 26, and exchanges heat between the heating end and the heating unit 10 through the second heat circulation channel 25.

[0046] On the basis of the above embodiments, as a preferred implementation of a data center waste heat utilization system based on geothermal energy storage, a first circulation pump 13 is provided on the first heat circulation channel 24, a second circulation pump 11 is provided on the second heat circulation channel 25, and a third circulation pump 14 is provided on the third heat circulation channel 26.

[0047] Based on the above embodiments, as a preferred implementation mode, the heating unit 10 is connected to the underground heat storage unit 8 and to the heat release end through a heat exchange system 23. The heat exchange system 23 can adopt various practical heat exchangers, such as shell and tube heat exchangers.

[0048] As a preferred implementation of the data center waste heat utilization system based on geothermal energy storage, Figure 1As shown, it includes a heat transfer system, a first heat circulation channel 24, a second heat circulation channel 25, a third heat circulation channel 26, a shallow soil heat storage system with high heat storage, and a heat exchange system 23. The heat transfer system includes a cold mass circulation unit 1 for cooling the data center, the cold mass circulation unit 1 performs heat exchange with the heat absorption end of the refrigeration circulation unit, and the heat release end of the refrigeration circulation unit performs selective heat exchange with the heating unit 10 and the underground heat storage unit 8 through the control unit. The shallow soil heat storage system with high heat storage is the underground heat storage unit 8.

[0049] The heat transfer system is connected to the heat exchange channel of the data center. The heat transfer system effectively absorbs and transfers the waste heat of the data center, and realizes the cooling of the data center at the same time; the shallow soil heat storage system with high heat storage includes an insulation bin 6, an underground heat exchange pipe 7 and a high heat storage material 9, which can efficiently store the heat generated by the heat transfer system and keep it warm for a long time; the heat exchange system 23 can provide the heat stored in the shallow soil heat storage system with high heat storage or the heat directly generated by the data center to the heating unit 10.

[0050] The heat transfer system includes an evaporator 2, a compressor 3, a condenser 4 and an expander 5. The evaporator 2 is connected to one end of the compressor 3, the other end of the compressor 3 is connected to the condenser 4, the other end of the condenser 4 is connected to the expander 5, and the other end of the expander 5 is connected to the other end of the evaporator 2.

[0051] The high heat storage shallow soil heat storage system includes a heat preservation bin 6, an underground heat exchange pipe 7 and a high heat storage material 9. In the high heat storage shallow soil heat storage system, the high heat storage material 9 can be selected from pebbles and other materials, which can reduce heat loss and improve the original soil heat storage capacity.

[0052] The first heat circulation channel 24 includes the first heat circulation channel heat absorption end, the first circulation pump 13, the three-way valve 1 15, the first heat circulation channel heat release end, the three-way valve 2 16 and the working medium circulation channel 1. The second heat circulation channel 25 includes the second circulation pump 11, the working medium circulation channel 2, and the second heat circulation channel heat release end. The third heat circulation channel 26 includes the third circulation pump 14, the working medium circulation channel 3, the third heat circulation channel heat absorption end, and the third heat circulation channel heat release end. The heat exchange system 23 is connected to the second heat circulation channel 25 heat release end, the third heat circulation channel 26 heat release end and the heating unit 10.

[0053] The heat absorption end of the first heat circulation channel is connected to the heat transfer system for absorbing the heat generated by the heat transfer system; the heat release end of the first heat circulation channel 24 is connected to the shallow soil heat storage system with high heat storage for indirectly utilizing the heat generated by the heat transfer system; the first heat circulation channel 24 is connected in parallel with the second heat circulation pipeline 25 through three-way valve 15 and three-way valve 2 16 for directly utilizing the heat generated by the heat transfer system; the heat absorption end of the third heat circulation channel 26 is connected to the shallow soil heat storage system with high heat storage for transferring the heat stored therein.

[0054] The technical solution provided by the utility model specifically includes the following working modes:

[0055] Working mode is the same as Figure 2 As shown, when the heating unit 10 has no heat demand, valve one 17, valve three 19 of the three-way valve one 15 and valve four 20, valve five 21 of the three-way valve two 16 are opened, and valve two 18 of the three-way valve one 15 and valve six 22 of the three-way valve two 16 are closed. The heat transfer system absorbs the waste heat of the data center, cools the data center, and stores the heat exchanged by the condenser 4 in the high heat storage shallow soil heat storage system through the first heat circulation channel 24.

[0056] Working mode 2 Figure 3 As shown, when the heating unit 10 has a heat demand and the cooling load of the data center is equal to the heat demand, valve one 17, valve two 18 of the three-way valve one 15 and valve four 20, valve six 22 of the three-way valve two 16 are opened, and valve three 19 of the three-way valve one 15 and valve five 21 of the three-way valve two 16 are closed. The heat transfer system absorbs the waste heat of the data center, cools the data center, and then directly exchanges heat with the heat exchanger 9 through the first heat circulation channel 24 and the second heat circulation channel 25 to provide heat for the heating unit 10.

[0057] Working mode three Figure 4 As shown, when the heating unit 10 has a heat demand and the cooling load of the data center is greater than the heat demand, valve one 17, valve three 19 of the three-way valve one 15 and valve four 20, valve five 21, valve six 22 of the three-way valve two 16 are opened, and the heat transfer system absorbs the waste heat of the data center. After cooling the data center, part of the heat exchanged by the condenser 4 is stored in the shallow soil heat storage system 8 for heat storage, and part of the heat is directly exchanged with the heat exchanger 9 through the first heat circulation channel 24 and the second heat circulation channel 25 to provide heat for the heating unit 10.

[0058] Working mode 4 Figure 5As shown, when the heating unit 10 has a heat demand and the cooling load of the data center is less than the heat demand, the third heat circulation channel 26 is opened in a cycle, and the heat stored in the shallow soil heat storage system can be transferred to the heat exchange system 9 to provide heat for the heating unit 10.

[0059] The technical solution disclosed in the utility model includes a heat transfer system, a first heat circulation channel, a second heat circulation channel, a third heat circulation channel, a shallow soil heat storage system with high heat storage, and a heat exchange system; the heat transfer system is connected to the heat exchange channel of the data center, and the heat transfer system effectively absorbs and transfers the waste heat of the data center, while realizing the cooling of the data center; the shallow soil heat storage system with high heat storage includes an insulation bin, an underground heat exchange pipe, and a high heat storage material, which can efficiently store the heat generated by the heat transfer system and keep it warm for a long time; the heat exchange system can provide the heat stored in the shallow soil heat storage system with high heat storage or the heat directly generated by the data center to the heating unit. The utility model mainly aims to solve the problem of insufficient utilization of waste heat resources in the data center. By storing heat in the soil, heat loss can be reduced and energy utilization can be improved.

[0060] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0061] The above content shows and describes the basic principle, main features and beneficial effects of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A data center waste heat utilization system based on geothermal energy storage, characterized by: The invention comprises a cold mass circulation unit (1) for cooling a data center, wherein the cold mass circulation unit (1) performs heat exchange with a heat absorption end of a refrigeration circulation unit, the heat release end of the refrigeration circulation unit performs heat exchange with a heating unit (10) and / or an underground heat storage unit (8), and the underground heat storage unit (8) performs heat exchange with the heating unit (10).

2. The data center waste heat utilization system based on geothermal energy storage according to claim 1 is characterized in that: The cold mass circulation unit (1) comprises a cold mass circulation pipe attached to the outside of the data center and / or inserted into the data center, and the cold mass in the cold mass circulation pipe circulates through the heat absorption end of the refrigeration circulation unit through a circulation pump (12).

3. The data center waste heat utilization system based on geothermal energy storage according to claim 2 is characterized in that: The refrigeration cycle unit comprises a compressor (3), a condenser (4), an expander (5) and an evaporator (2) which are connected in sequence, the evaporator (2) being the heat absorption end and the condenser (4) being the heat release end.

4. The data center waste heat utilization system based on geothermal energy storage according to any one of claims 1 to 3, characterized in that: The underground heat storage unit (8) comprises a heat preservation chamber (6) buried underground, a high heat storage material (9) is arranged in the soil enclosed by the heat preservation chamber (6), an underground heat exchange pipe (7) is arranged on the periphery of the high heat storage material (9), and the underground heat exchange pipe (7) exchanges heat with the heat absorption end and the heat supply unit (10) respectively through branch pipes.

5. The data center waste heat utilization system based on geothermal energy storage according to claim 4 is characterized in that: The high heat storage material (9) is pebbles.

6. The data center waste heat utilization system based on geothermal energy storage according to claim 5 is characterized in that: The high heat storage material (9) is provided in a plurality of groups, and the outer circumference of each group of high heat storage material (9) is wound with the buried heat exchange pipes (7) connected in series with each other.

7. The data center waste heat utilization system based on geothermal energy storage according to claim 6 is characterized by: The buried heat exchange pipe (7) exchanges heat with the heat absorbing end through a first heat circulation channel (24), exchanges heat with the heat supply unit (10) through a third heat circulation channel (26), and exchanges heat with the heat releasing end and the heat supply unit (10) through a second heat circulation channel (25).

8. The data center waste heat utilization system based on geothermal energy storage according to claim 7 is characterized in that: The first heat circulation channel (24) is provided with a first circulation pump (13), the second heat circulation channel (25) is provided with a second circulation pump (11), and the third heat circulation channel (26) is provided with a third circulation pump (14).

9. The data center waste heat utilization system based on geothermal energy storage according to claim 8 is characterized by: The heat supply unit (10) is connected to the underground heat storage unit (8) and to the heat release end via a heat exchange system (23).

10. The data center waste heat utilization system based on geothermal energy storage according to claim 9 is characterized in that: The heat exchange system (23) is a shell and tube heat exchanger.

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