Waste heat recovery system of data center

Abstract

The utility model relates to a waste heat recovery system of a data center, which is suitable for the data center comprising an indirect evaporative cooling unit and comprises a hot air recovery device, a heat pump and a heat supply and return water pipe, the data center is communicated with the cooling unit, the data center is communicated with the air inlet end of the hot air recovery device, and the cooling unit is communicated with the air outlet end of the hot air recovery device; the water inlet end of the hot air recovery device is connected to the heat pump through a waste heat source water supply and return pipe, and the water outlet end of the hot air recovery device is connected to the heat pump which is connected to a heating water supply and return pipe. The hot air recovery device comprises a shell, a pipeline structure and a plate type structure. The pipeline structure and the plate type structure are arranged in the shell, the plate type structure is arranged in the shell, the pipeline structure is transversely arranged in the shell, and the plate type structure is longitudinally arranged in the shell. According to the waste heat recovery system of the data center, the connection mode is simple, the hot air recovery device and the heat pump are additionally arranged, waste heat generated by the data center is fully utilized, and meanwhile cold is supplied to the data center.

Description

Technical Field

[0001] The present application relates to the field of energy planning, and in particular to a waste heat recovery system for a data center. Background Art

[0002] There are usually two cooling methods for data centers, which are divided into air cooling and liquid cooling systems according to the different media that take away the heat from the data center. Indirect evaporative cooling is a form of air cooling. Generally, liquid cooling systems are easier to recover waste heat, but air cooling systems are difficult to recover heat because they send cold air and exhaust hot air.

[0003] At present, the methods of using air cooling system to indirectly evaporatively cool waste heat include: (Patent application number CN202223549890.0 A data center waste heat recovery system based on indirect evaporative cooling air conditioning). This application mainly recovers the hot air on the return air side as the heat source on the heat pump evaporator side, and then uses the air source heat pump to heat the hot water. However, this method is inefficient and difficult to transform. The hot air coming out of the computer room in the data center is seriously wasted and cannot be fully recycled. Utility Model Content

[0004] In view of this, the present application proposes a waste heat recovery system for a data center to solve the above problems.

[0005] According to one aspect of the present application, there is provided a waste heat recovery system for a data center, which is applicable to a data center including an indirect evaporative cooling unit, and comprises: a hot air recovery device, a heat pump, and a heating supply and return water pipe;

[0006] The data center is connected to the cooling unit, the data center is connected to the air inlet of the hot air recovery device, and the cooling unit is connected to the air outlet of the hot air recovery device;

[0007] The water inlet end of the hot air recovery device is connected to the heat pump through a waste heat source water supply and return pipe, the water outlet end of the hot air recovery device is connected to the heat pump, and the heat pump is connected to the heating water supply and return pipe;

[0008] The hot air recovery device includes: a shell, a pipeline structure and a plate structure; the pipeline structure is arranged inside the shell, the pipeline structure is arranged horizontally inside the shell, the plate structure is arranged inside the shell, and the plate structure is arranged longitudinally inside the shell.

[0009] In a possible implementation manner, the pipeline structure is horizontally arranged inside the shell, and the plate structure is vertically arranged inside the shell.

[0010] In a possible implementation manner, one end of the plate structure is in contact with the shell, and the other end of the plate structure is arranged at a preset distance from the inner circumference of the shell.

[0011] In a possible implementation, there are multiple plate structures, the multiple plate structures are arranged at intervals, and the distance between two adjacent plate structures is equal; and the arrangement positions of two adjacent plate structures are different.

[0012] In a possible implementation, there are multiple pipeline structures, the multiple pipeline structures are arranged at intervals, and the distance between two adjacent pipeline structures is equal.

[0013] In a possible implementation, an air inlet opening is provided at the lower portion of the hot air recovery device, the air inlet opening is provided close to the water outlet end of the hot air recovery device, and one end of the plate structure is provided between the air inlet opening and the water outlet end of the hot air recovery device.

[0014] In a possible implementation, an air outlet opening is provided at the top of the hot air recovery device, the air outlet opening is provided close to the water inlet end of the hot air recovery device, and the other end of the plate structure is provided between the air outlet opening and the water inlet end of the hot air recovery device.

[0015] In a possible implementation, the lower end of the plate structure near the water inlet end of the hot air recovery device has a set distance from the lower part of the shell; the upper end of the plate structure near the water outlet end of the hot air recovery device has a set distance from the upper part of the shell.

[0016] In a possible implementation, the hot air recovery device has a symmetrical structure, and the pipe structure is made of copper.

[0017] In a possible implementation, a first arched structure is provided on the left side of the hot air recovery device, the first arched structure is arched to the left, a second arched structure is provided on the right side of the hot air recovery device, the second arched structure is arched to the right, and the middle part of the hot air recovery device is in the shape of a cylindrical structure.

[0018] Beneficial effects of this application:

[0019] The waste heat recovery system of the data center proposed in this embodiment has a simple connection method. By adding a hot air recovery device and a heat pump, the heat energy generated by the data center can be fully utilized. Among them, the indirect evaporative cooling unit uses the effect of water evaporation and heat absorption to cool the air, and realizes the cooling of the air through indirect heat exchange between water and air, providing cold air for the computer room of the data center, and at the same time bringing the heat generated by the data center to the outside of the data center. The exhausted hot air enters the hot air recovery device from the data center, enters the hot air recovery device from the bottom, flows through the entire hot air recovery device in an upward and downward reciprocating forward manner, and then flows out from the top of the hot air recovery device and enters the indirect evaporative cooling unit; at this time, the hot air enters the hot air recovery device, and then heats the return water pipe of the waste heat source, and then the waste heat source supply return water pipe enters the heat pump unit. After the heat pump unit raises the water temperature of the waste heat source, it supplies it to the surrounding buildings through the heating supply return water pipe.

[0020] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 A connection diagram of a waste heat recovery system for a data center according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0024] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0027] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0028] like Figure 1 As shown, the waste heat recovery system of the data center is suitable for a data center containing an indirect evaporative cooling unit, including: a hot air recovery device 2, a heat pump 4 and a heating supply and return water pipe 6; the data center 1 is connected to the cooling unit 3, the data center 1 is connected to the air inlet end of the hot air recovery device 2, and the cooling unit 3 is connected to the air outlet end of the hot air recovery device 2; the water inlet end of the hot air recovery device 2 is connected to the heat pump 4 through the waste heat source supply and return water pipe 5, the water outlet end of the hot air recovery device 2 is connected to the heat pump 4, and the heat pump 4 is connected to the heating supply and return water pipe 6; the hot air recovery device 2 includes: a shell, a pipe structure 2-1 and a plate structure 2-2; the pipe structure 2-1 is arranged inside the shell, the pipe structure 2-1 is arranged horizontally inside the shell, the plate structure 2-2 is arranged inside the shell, and the plate structure 2-2 is arranged vertically inside the shell.

[0029] The waste heat recovery system of the data center proposed in this embodiment has a simple connection method. By adding a hot air recovery device 2 and a heat pump 4, the heat energy generated by the data center 1 is fully utilized. Among them, the indirect evaporative cooling unit 3 uses the outdoor natural cold source to cool the data center, and at the same time brings the heat generated by the data center 1 to the outside of the data center 1. The exhausted hot air enters the hot air recovery device 2 from the data center 1, and enters the inside of the hot air recovery device 2 from the bottom of the hot air recovery device 2. After the hot air flows through the entire long-cylindrical hot air recovery device 2 in an upward and downward reciprocating forward manner, it flows out from the top of the hot air recovery device 2 and then enters the indirect evaporative cooling unit 3; specifically, when the hot air enters the hot air recovery device 2, the water temperature of the waste heat source supply and return water pipe 5 is increased, and then the water pipe of the waste heat source enters the heat pump 4. After the heat pump 4 raises the temperature of the waste heat source supply and return water pipe 5, it is supplied to the surrounding buildings through the heating supply and return water pipe 6. In addition, it should be noted that the number of heat pumps proposed in this application can be adjusted according to actual conditions.

[0030] It should be further explained that the waste heat recovery system of the data center of the present application can be used in any computer room of a data center that uses indirect evaporative cooling, such as the waste heat of a renovated data center 1 or a newly built data center 1. If the data center has already built a computer room, the waste heat heating transformation can be completed by directly adding a hot air recovery device 2 and a heat pump 4. The waste heat utilization efficiency of this system is high, and the waste heat of the computer room in the data center is completely recovered. It not only reduces the return air temperature of the data center 1, but also improves the efficiency of the indirect evaporative cooling unit 3, while providing domestic hot water or heating for surrounding buildings, better meeting the needs of users. Taking a certain data center as an example, the chip temperature is 40°C, and the temperature of the hot air discharged through the air duct is 35°C. The 35° hot air passes through the hot air recovery device 2 and is cooled to 28°C, and the heat is brought to the waste heat source supply return pipe 5. The water supply temperature of the waste heat source supply return pipe 5 is 24°C. The 24°C water enters the heat pump 4, passes through the evaporator of the heat pump 4, and the refrigerant of the evaporator absorbs heat and evaporates and then enters the compressor of the heat pump 4. The refrigerant becomes a high-temperature and high-pressure refrigerant gas, which exchanges heat with the heating supply return pipe 6. The temperature of the hot water after the heat exchange is 60°C, which is used to heat the buildings around the data center and save the heat energy consumed by the buildings around the data center in winter.

[0031] In one specific embodiment, the pipe structure 2-1 is horizontally arranged inside the shell, and the plate structure 2-2 is vertically arranged inside the shell. In this embodiment, it should be noted that the pipe structure 2-1 is a copper tube arranged horizontally, and the pipe structure 2-1 is composed of dense copper tubes with multiple channels. Cold water flows in from the left side of the hot air recovery device 2, enters different channels respectively, and flows out from the right side into the heat pump 4. The left side of the hot air recovery device 2 mentioned here is the left side of the hot air recovery device 2 in the figure, and the right side of the hot air recovery device 2 is the right side of the hot air recovery device 2 in the figure. It should also be noted that it is not limited to the upper, lower, left and right directions in the figure, as long as the hot air recovery device 2 is used reasonably. It should also be noted that the plate structure 2-2 is a vertically connected and non-top structure. It should be further explained that when cold water enters the hot air recovery device 2, the hot air enters from the lower right of the hot air recovery device 2 and exchanges heat with the pipe structure 2-1. Specifically, the hot air passes through the plate structure 2-2 from bottom to top and enters the evenly arranged copper tubes, so that the hot air in the shell and the cold water in the pipe structure 2-1 are evenly and indirectly exchanged with heat. After the hot air is converted into medium-temperature air, it flows to the inside of the indirect evaporative cooling unit 3. At the same time, the water in the pipe structure 2-1 transfers heat to the waste heat source supply and return water pipe 5. The water temperature of the waste heat source supply and return water pipe 5 is increased by the heat pump 4, and then transported to the heating supply and return water pipe 6. The heating supply and return water pipe 6 provides heat for the buildings around the data center 1. The hot air recovery device 2 uses the heat generated by the data center 1 to improve energy utilization.

[0032] In one specific embodiment, one end of the plate structure 2-2 is in contact with the shell, and the other end of the plate structure 2-2 is set at a preset distance from the inner circumference of the shell.

[0033] In one specific embodiment, there are multiple plate structures 2-2, and the multiple plate structures 2-2 are arranged at intervals, and the distance between two adjacent plate structures 2-2 is equal; and the arrangement positions of two adjacent plate structures 2-2 are different, so that the hot air can flow fully in the shell, thereby fully contacting with the water in the pipe structure 2-1, and evenly exchanging heat.

[0034] In one specific embodiment, there are multiple pipe structures 2-1, which are arranged at intervals, and the distance between two adjacent pipe structures 2-1 is equal, so as to further ensure that the hot air entering the shell can fully exchange heat with the water in each pipe structure 2-1.

[0035] In one specific embodiment, an air inlet opening is provided at the lower portion of the hot air recovery device 2, the air inlet opening is provided close to the water outlet end of the hot air recovery device 2, and one end of the plate structure 2-2 is provided between the air inlet opening and the water outlet end of the hot air recovery device 2.

[0036] In one of the specific embodiments, an air outlet opening is provided at the upper portion of the hot air recovery device 2, the air outlet opening is provided close to the water inlet end of the hot air recovery device 2, and the other end of the plate structure 2-2 is provided between the air outlet opening and the water inlet end of the hot air recovery device 2. In this embodiment, it should be noted that the direction of the air inlet opening and the air outlet opening of the hot air recovery device 2 is the length direction of the plate structure 2-2, wherein the setting length of the plate structure 2-2 is slightly greater than the distance between the air inlet opening and the air outlet opening of the hot air recovery device 2, the air outlet opening of the hot air recovery device 2 is the air outlet end of the hot air recovery device 2; the air inlet opening of the hot air recovery device 2 is the air inlet end of the hot air recovery device 2. It should also be noted that the air inlet of the hot air recovery device 2 and the air outlet of the hot air recovery device 2 are respectively provided at the lateral ends of the hot air recovery device 2.

[0037] In one specific embodiment, the lower end of the plate structure 2-2 near the water inlet end of the hot air recovery device 2 has a set distance from the lower part of the shell; the upper end of the plate structure 2-2 near the water outlet end of the hot air recovery device 2 has a set distance from the upper part of the shell.

[0038] It should be noted that the air inlet opening is used to allow the hot air exhausted from the data center 1 to pass through, and the air outlet opening is used to allow the medium-temperature air to pass through the cooling unit 3, so that the medium-temperature air exchanges heat with the outside air without contact, and then enters the data center 1 again to absorb heat. It should also be noted that the water inlet end and the air inlet opening are arranged on both sides of the shell relative to each other, and the water outlet end and the air outlet opening are arranged on both sides of the shell relative to each other. The water inlet end and the water outlet end are symmetrically arranged at both ends of the shell to facilitate sufficient heat exchange.

[0039] In one specific embodiment, the hot air recovery device 2 has a symmetrical structure, and the material of the pipe structure 2-1 is copper. In this embodiment, it should be noted that the copper pipe structure 2-1 has good thermal conductivity, good stability, can withstand high temperature and low temperature environments, will not be affected in different environments, and will not easily break or deform.

[0040] In one specific embodiment, a first arched structure is provided on the left side of the hot air recovery device 2, the first arched structure is arched to the left, a second arched structure is provided on the right side of the hot air recovery device 2, the second arched structure is arched to the right, and the middle part of the hot air recovery device 2 is in the shape of a cylindrical structure. In this embodiment, it should be noted that the middle part of the hot air recovery device 2 is cylindrical, and the first arched structure and the second arched structure are in the shape of a cone structure.

[0041] It should be noted that although the waste heat recovery system of a data center is introduced as an example in this application, those skilled in the art will understand that this application should not be limited thereto. In fact, users can flexibly set it according to personal preferences and / or actual application scenarios, as long as it is reasonable.

[0042] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A waste heat recovery system for a data center, suitable for a data center with an indirect evaporative cooling unit, It is characterized in that include: Hot air recovery device, heat pump and heating supply and return pipes; The data center is connected to the cooling unit, the data center is connected to the hot air recovery device, and the cooling unit is connected to the hot air recovery device; The water inlet end of the hot air recovery device is connected to the heat pump through a waste heat source water supply and return pipe, the water outlet end of the hot air recovery device is connected to the heat pump, and the heat pump is connected to the heating water supply and return pipe; The hot air recovery device includes: a shell, a pipeline structure and a plate structure; the pipeline structure is arranged inside the shell, the pipeline structure is arranged horizontally inside the shell, the plate structure is arranged inside the shell, and the plate structure is arranged longitudinally inside the shell.

2. The waste heat recovery system for a data center according to claim 1, It is characterized in that The pipeline structure is horizontally arranged inside the shell, and the plate structure is vertically arranged inside the shell.

3. The waste heat recovery system for a data center according to claim 1, It is characterized in that One end of the plate structure is in contact with the shell, and the other end of the plate structure is arranged at a preset distance from the inner circumference of the shell.

4. The waste heat recovery system for a data center according to claim 1, It is characterized in that There are multiple plate structures, and the multiple plate structures are arranged at intervals, and the distance between two adjacent plate structures is equal; and the arrangement positions of two adjacent plate structures are different.

5. The waste heat recovery system for a data center according to claim 1, It is characterized in that There are multiple pipeline structures, and the multiple pipeline structures are arranged at intervals, and the distance between two adjacent pipeline structures is equal.

6. The waste heat recovery system for a data center according to any one of claims 1 to 5, It is characterized in that An air inlet opening is arranged at the lower part of the hot air recovery device, the air inlet opening is arranged close to the water outlet end of the hot air recovery device, and one end of the plate structure is arranged between the air inlet opening and the water outlet end of the hot air recovery device.

7. The waste heat recovery system for a data center according to claim 6, It is characterized in that An air outlet opening is arranged at the upper part of the hot air recovery device, the air outlet opening is arranged close to the water inlet end of the hot air recovery device, and the other end of the plate structure is arranged between the air outlet opening and the water inlet end of the hot air recovery device.

8. The waste heat recovery system for a data center according to claim 6, It is characterized in that The lower end of the plate structure near the water inlet end of the hot air recovery device is set at a distance from the lower part of the shell; the upper end of the plate structure near the water outlet end of the hot air recovery device is set at a distance from the upper part of the shell.

9. The waste heat recovery system for a data center according to claim 6, It is characterized in that The hot air recovery device has a symmetrical structure, and the material of the pipeline structure is copper.

10. The waste heat recovery system for a data center according to claim 6, It is characterized in that A first arched structure is arranged on the left side of the hot air recovery device, and the first arched structure is arched to the left. A second arched structure is arranged on the right side of the hot air recovery device, and the second arched structure is arched to the right. The middle part of the hot air recovery device is in a cylindrical structure.

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