Data center waste heat recovery system

Abstract

The utility model discloses a data center waste heat recovery system, which belongs to the field of data centers, and comprises a data center plate heat exchanger, a data center water cooler, a cooling tower, a waste heat utilization plate heat exchanger and a heat pump unit, the data center plate heat exchanger is connected to a data center liquid cooling pipeline, the data center water cooler is also connected to the data center liquid cooling pipeline, and the cooling tower is connected to the waste heat utilization plate heat exchanger. The sides, away from the data center, of the data center plate heat exchanger and the data center water cooler are both connected to a first pipeline, the end of the first pipeline is installed at the water inlet end of the cooling tower, and the water outlet end of the cooling tower flows back to the data center plate heat exchanger and the data center water cooler through a backflow pipeline. According to the system, the water inlet temperature of a cooling tower of the data center is reduced, a winter cooling tower of the data center is replaced, meanwhile, waste heat of the data center is recycled, the purpose of saving energy is achieved, and meanwhile the system is simple in structure and easy to install and operate.

Description

Technical Field

[0001] The utility model relates to the field of data centers, and more specifically, to a waste heat recovery system for a data center. Background Technique

[0002] In recent years, with the rapid increase in the energy consumption of data centers, it has attracted great attention from the country, and then the concept of green data centers has been put forward. Compared with air-cooled data centers, liquid-cooled data centers can save more than 30% in energy consumption. Therefore, low-energy-consuming liquid-cooled data centers have received more attention. The hot water flowing out of the data center is cooled by a cooling tower. Although this method can effectively cool the data center, the hot water flowing out of the data center in winter causes a certain degree of waste. Therefore, the recovery of waste heat from the data center is one of the keys to energy conservation. The waste heat recovery systems in the prior art have relatively complex structures, which are not conducive to installation and control. Content of the Utility Model

[0003] 1. Technical Problems to be Solved

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a waste heat recovery system for a data center, which can realize the recovery of waste heat from the data center in winter to achieve the purpose of energy conservation.

[0005] 2. Technical Solutions

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A waste heat recovery system for a data center includes a data center plate heat exchanger, a data center water cooler, a cooling tower, a waste heat utilization plate heat exchanger, and a heat pump unit. The data center plate heat exchanger is connected to the data center liquid cooling pipeline, and the data center water cooler is also connected to the data center liquid cooling pipeline. The sides of the data center plate heat exchanger and the data center water cooler facing away from the data center are both connected to a first pipeline. The end of the first pipeline is installed at the water inlet end of the cooling tower. The water outlet end of the cooling tower is returned to the data center plate heat exchanger and the data center water cooler through a return pipeline. A flow control system is arranged on the first pipeline path. An electric switch valve D is installed on the surface of the first pipeline. The first pipeline is branched to be connected to the primary side of the waste heat utilization plate heat exchanger. The secondary side of the waste heat utilization plate heat exchanger is communicated with the evaporation side of the heat pump unit and then returned to the waste heat utilization plate heat exchanger. The primary pipe return water for energy supply enters the condenser end of the heat pump unit after being pressurized by a circulating water pump and is sent to the end for heat supply through the primary pipe network for energy supply.

[0008] Furthermore, the flow control system includes a third pipeline branched from the first pipeline. The end of the third pipeline is connected to the water inlet end of the primary side of the waste heat utilization plate heat exchanger. The connection position of the third pipeline is located in front of the electric switch valve D.

[0009] Further, the flow control system further includes a second pipeline at the return water end of the primary side of the waste heat utilization plate heat exchanger. The second pipeline branches out a fourth pipeline. The end of the second pipeline is connected to the return pipeline to achieve return flow. The end of the fourth pipeline is connected to the first pipeline, and the connection end of the fourth pipeline is placed behind the electric switch valve D.

[0010] Further, an electric switch valve B is arranged on the fourth pipeline, and an electric switch valve A is arranged on the second pipeline.

[0011] Further, an electric switch valve E and an electric regulating valve C are sequentially installed on the third pipeline, and a booster pump is arranged between the electric regulating valve C and the waste heat utilization plate heat exchanger.

[0012] Further, a temperature sensor is also arranged on the second pipeline. The temperature sensor is placed at the front end of the fourth pipeline, and the temperature sensor is electrically connected to the electric regulating valve C.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model provides a waste heat recovery system for a data center. While reducing the inlet water temperature of the cooling tower in the data center and replacing the cooling tower in the data center in winter, the waste heat of the data center is recovered and reused to achieve the purpose of energy conservation. At the same time, the system has a simple structure and is easy to install and operate. Brief description of the drawings

[0015] Figure 1 It is a schematic connection structure diagram of the waste heat recovery system for the numerical control center of the present utility model.

[0016] Explanation of the reference numerals in the figure: 1. Data center plate heat exchanger; 2. Data center water cooling; 3. Cooling tower; 4. Flow control system; 5. First pipeline; 51. Return pipeline; 6. Waste heat utilization plate heat exchanger; 7. Heat pump unit; 8. Electric switch valve B; 9. Temperature sensor; 10. Electric switch valve A; 11. Electric switch valve B; 12. Electric regulating valve C; 13. Electric switch valve D; 14. Second pipeline; 15. Third pipeline; 16. Fourth pipeline. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0018] Embodiment:

[0019] Please refer to Figure 1 As shown in the figure, a waste heat recovery system for a data center includes a data center plate heat exchanger 1, a data center water cooler 2, a cooling tower 3, a waste heat utilization plate heat exchanger 6, and a heat pump unit 7. The data center plate heat exchanger 1 is connected to the data center liquid cooling pipeline, and the data center water cooler 2 is also connected to the data center liquid cooling pipeline. The sides of the data center plate heat exchanger 1 and the data center water cooler 2 facing away from the data center are both connected to a first pipeline 5. The end of the first pipeline 5 is installed at the water inlet end of the cooling tower 3. The water outlet end of the cooling tower 3 is returned to the data center plate heat exchanger 1 and the data center water cooler 2 through a return pipeline 51 to achieve cooling of the data center and ensure that the data center is in a constant temperature state. A flow control system 4 is provided on the passage of the first pipeline 5. An electric switch valve D13 is installed on the surface of the first pipeline 5. The first pipeline 5 branches to connect with the primary side of the waste heat utilization plate heat exchanger 6. The secondary side of the waste heat utilization plate heat exchanger 6 is communicated with the evaporation side of the heat pump unit 7 and then returned to the waste heat utilization plate heat exchanger 6. The supply primary pipe return water enters the condenser end of the heat pump unit 7 after being pressurized by a circulating pump and is sent to the end heat supply through the supply primary pipe network. In winter, the flow control system 4 can control each pipeline to use the hot water flowing out of the data center to heat the secondary side of the waste heat utilization plate heat exchanger 6 and supply the heated water into the heat pump unit 7 to achieve the recovery and utilization of waste heat.

[0020] Among them, the primary side refers to the heat source end, and the secondary side refers to the circulating water. Both the waste heat utilization plate heat exchanger 6 and the data center plate heat exchanger 1 are plate heat exchangers.

[0021] Please refer to Figure 1 As shown in the figure, the flow control system 4 includes a third pipeline 15 branched from the first pipeline 5. The end of the third pipeline 15 is connected to the water inlet end of the primary side of the waste heat utilization plate heat exchanger 6. The connection of the third pipeline 15 is disposed in front of the electric switch valve D13 to introduce hot water into the waste heat utilization plate heat exchanger 6 and can control the flow direction of the hot water inside the first pipeline 5 through the electric switch valve D13. The flow control system 4 also includes a second pipeline 14 at the return water end of the primary side of the waste heat utilization plate heat exchanger 6. The second pipeline 14 branches to form a fourth pipeline 16. The end of the second pipeline 14 is connected to the return pipeline 51 to achieve return flow. The end of the fourth pipeline 16 is connected to the first pipeline 5. The connection end of the fourth pipeline 16 is disposed behind the electric switch valve D13 to achieve the return flow of the primary side cold water after passing through the waste heat utilization plate heat exchanger 6.

[0022] Among them, an electric switch valve B8 is arranged on the fourth pipeline 16, and an electric switch valve A10 is arranged on the second pipeline 14 to control each pipeline. An electric switch valve E11 and an electric regulating valve C12 are successively installed on the third pipeline 15. A booster pump is arranged between the electric regulating valve C12 and the waste heat utilization plate heat exchanger 6. A temperature sensor 9 is also arranged on the second pipeline 14. The temperature sensor 9 is placed at the front end of the fourth pipeline 16. The temperature sensor 9 is electrically connected to the electric regulating valve C12 to monitor the water level of the reflux and control the flow rate of the electric regulating valve C12.

[0023] Working principle: When there is no need for recovery, the electric switch valve E11 is in the closed state at this time. At this time, the internal liquid can only flow back after being cooled by the cooling tower 3 to cool the data center. On the contrary, when waste heat recovery is required, the electric switch valve D13 can be closed, and the electric switch valve E11 and the electric regulating valve C12 can be opened. Through the booster pump on the third pipeline 15, hot water is introduced into the water inlet pipe on the primary side of the waste heat utilization plate heat exchanger 6 to heat the cold water flowing into the waste heat utilization plate heat exchanger 6 through the heat pump unit 7. After heating, it is discharged from the drainage end on the secondary side of the waste heat utilization plate heat exchanger 6 and acts on the end heat supply through the heat pump unit 7. The water flow on the primary side of the waste heat utilization plate heat exchanger 6 is discharged from the second pipeline 14 after cooling and first passes through the temperature sensor 9. The electric regulating valve C12 is automatically controlled according to the height of the discharged water level to realize the flow rate through the primary side of the waste heat utilization plate heat exchanger 6, and the water temperature is judged. When the water level reaches the requirement, the electric switch valve A10 can be opened to directly flow back to the reflux pipeline 51 without passing through the cooling tower 3. On the contrary, when the water temperature is still at a relatively high level, the electric switch valve A10 is closed and the electric switch valve B8 is opened to make the water flow into the first pipeline 5 and enter the cooling tower 3 for cooling, and then flow back to the data center end.

[0024] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improvement concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.

Claims

1. A waste heat recovery system for a data center, comprising a data center plate heat exchanger (1), a data center water cooling system (2), a cooling tower (3), a waste heat utilization plate heat exchanger (6) and a heat pump unit (7), characterized in that: The data center plate heat exchanger (1) is connected to the data center liquid cooling pipeline, and the data center water cooler (2) is also connected to the data center liquid cooling pipeline. The sides of the data center plate heat exchanger (1) and the data center water cooler (2) facing away from the data center are both connected to the first pipeline (5). The end of the first pipeline (5) is installed at the water inlet end of the cooling tower (3). The water outlet end of the cooling tower (3) returns to the data center plate heat exchanger (1) and the data center water cooler (2) through the return pipeline (51). A flow control system (4) is provided on the path of the first pipeline (5). An electric switch valve D (13) is installed on the surface of the first pipeline (5). The first pipeline (5) branches to be connected to the primary side of the waste heat utilization plate heat exchanger (6). The secondary side of the waste heat utilization plate heat exchanger (6) is communicated with the evaporation side of the heat pump unit (7) and returns to the waste heat utilization plate heat exchanger (6). The return water of the primary energy supply pipe is pressurized by a circulating pump and then enters the condenser end of the heat pump unit (7), and is sent to the end heat supply through the primary energy supply pipe network.

2. The waste heat recovery system for a data center according to claim 1, characterized in that: The flow control system (4) includes a third pipeline (15) branched from the first pipeline (5). The end of the third pipeline (15) is connected to the water inlet end of the primary side of the waste heat utilization plate heat exchanger (6), and the connection of the third pipeline (15) is disposed in front of the electric switch valve D (13).

3. A waste heat recovery system for a data center according to claim 2, characterized in that: The flow control system (4) further includes a second pipeline (14) at the return water end of the primary side of the waste heat utilization plate heat exchanger (6). The second pipeline (14) branches to form a fourth pipeline (16). The end of the second pipeline (14) is connected to the return pipeline (51) to achieve return flow. The end of the fourth pipeline (16) is connected to the first pipeline (5), and the connection end of the fourth pipeline (16) is disposed behind the electric switch valve D (13).

4. The waste heat recovery system for a data center according to claim 3, characterized in that: An electric switch valve B (8) is provided on the fourth pipeline (16), and an electric switch valve A (10) is provided on the second pipeline (14).

5. The waste heat recovery system for a data center according to claim 4, characterized in that: An electric switch valve E (11) and an electric control valve C (12) are sequentially installed on the third pipeline (15), and a booster pump is provided between the electric control valve C (12) and the waste heat utilization plate heat exchanger (6).

6. The waste heat recovery system for a data center according to claim 5, wherein: A temperature sensor (9) is further provided on the second pipeline (14). The temperature sensor (9) is disposed in front of the fourth pipeline (16), and the temperature sensor (9) is electrically connected to the electric control valve C (12).

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