A waste heat recovery system for a data center

Abstract

The utility model discloses a kind of waste heat recovery systems for data center, including ORC power generation system, heating system, cooling tower and water cooling system arranged in data center;The ORC power generation system, the heating system, the cooling tower and the water cooling system are sequentially connected by corresponding pipeline and form a loop;A return liquid pump is arranged in the pipeline between the heating system and the cooling tower, and a temperature sensor and a first electromagnetic three-way valve are arranged in the pipeline connected between the ORC power generation system and the water cooling system, and the first electromagnetic three-way valve is also communicated with the pipeline between the ORC power generation system and the heating system by corresponding pipeline. The utility model realizes the continuous cooling of data center, realizes the power generation and heating of data center waste heat, realizes the effective recovery and utilization of data center waste heat.

Description

Technical Field

[0001] This utility model belongs to the field of energy conservation and environmental protection technology, specifically, it relates to a waste heat recovery system for data centers. Background Technology

[0002] With the rapid development of the information age, data centers, as the core infrastructure supporting the operation of emerging technologies such as the Internet, cloud computing, big data, and artificial intelligence, are becoming increasingly important. A data center is a building or location that centrally houses computer servers, network equipment, storage devices, and related supporting facilities, primarily used for data storage, processing, transmission, and management. It provides stable, efficient, and secure IT services to various enterprises and institutions, covering a wide range of application scenarios from simple website hosting to complex financial transaction processing and scientific computing.

[0003] However, data centers generate a lot of heat during operation. If this heat is not dissipated in time or is not properly cooled, it can lead to excessively high equipment temperatures, which in turn can affect equipment performance, shorten equipment lifespan, and even cause serious consequences such as system failure and data loss.

[0004] Currently, water cooling systems are commonly used to cool data centers. These systems absorb heat from servers by circulating cooling water and then transfer it to outdoor cooling towers to dissipate heat, thus achieving a cooling effect. However, this cooling method results in a large amount of waste heat being directly released into the outdoor environment. This failure to properly recover and effectively utilize this waste heat leads to secondary energy waste, which not only increases the operating costs of data centers but also contradicts the current concepts of energy conservation, emission reduction, and green sustainable development. Utility Model Content

[0005] In order to solve the problems existing in the prior art, this utility model aims to provide a waste heat recovery system for data centers to realize the recovery and utilization of waste heat.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A waste heat recovery system for a data center includes an ORC power generation system, a heating system, a cooling tower, and a water-cooling system arranged in the data center. The ORC power generation system, the heating system, the cooling tower, and the water-cooling system are sequentially connected through corresponding pipelines to form a loop. A return pump is installed in the pipeline between the heating system and the cooling tower, and a temperature sensor and a first electromagnetic three-way valve are installed in the pipeline connecting the ORC power generation system and the water-cooling system. The first electromagnetic three-way valve is also connected to the pipeline between the ORC power generation system and the heating system through a corresponding pipeline.

[0008] Furthermore, a one-way valve is respectively installed in the pipeline between the ORC power generation system and the heating system, as well as in the pipeline between the first electromagnetic three-way valve and the ORC power generation system and the heating system.

[0009] Furthermore, the ORC power generation system includes an evaporator, a turbine, a generator, a condenser, a working fluid pump, and a preheater; the evaporator, the turbine, the condenser, the working fluid pump, and the preheater are sequentially connected through corresponding pipelines to form a loop, and the tube-side outlet of the evaporator is connected to the tube-side inlet of the preheater through a corresponding pipeline; while the generator is connected to the turbine.

[0010] Furthermore, a flow sensor is installed in the pipeline adjacent to the inlet of the return pump.

[0011] Furthermore, a second electromagnetic three-way valve is installed in the pipeline adjacent to the liquid inlet of the heating system, and the second electromagnetic three-way valve is also connected to the liquid inlet of the cooling tower through a corresponding pipeline.

[0012] Furthermore, the inlet of the cooling tower is also connected to a replenishment pump via a corresponding pipeline.

[0013] Furthermore, a liquid level switch is installed inside the cooling tower.

[0014] The beneficial effects of this utility model are as follows: This utility model realizes continuous cooling of the data center while generating electricity and providing heating from the waste heat of the data center, achieving effective recovery and utilization of the waste heat of the data center, improving energy utilization efficiency, reducing the operating cost of the data center, and achieving energy conservation, emission reduction and green sustainable development.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall system structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the ORC structure of this utility model.

[0019] The following are the labels in the diagram: 1. ORC power generation system; 2. Heating system; 3. Cooling tower; 4. Water cooling system; 5. Return pump; 6. Temperature sensor; 7. First solenoid three-way valve; 8. Check valve; 9. Flow sensor; 10. Second solenoid three-way valve; 11. Make-up pump; 12. Liquid level switch; 101. Evaporator; 102. Turbine; 103. Generator; 104. Condenser; 105. Working fluid pump; 106. Preheater. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] See Figure 1 As shown, a waste heat recovery system for a data center includes an ORC power generation system 1, a heating system 2, a cooling tower 3, and a water-cooling system 4 arranged in the data center. The ORC power generation system 1, the heating system 2, the cooling tower 3, and the water-cooling system 4 are sequentially connected through corresponding pipelines to form a loop. A return pump 5 is installed in the pipeline between the heating system 2 and the cooling tower 3, and a temperature sensor 6 and a first electromagnetic three-way valve 7 are installed in the pipeline connecting the ORC power generation system 1 and the water-cooling system 4. The first electromagnetic three-way valve 7 is also connected to the pipeline between the ORC power generation system 1 and the heating system 2 through a corresponding pipeline.

[0023] For further details, please refer to [link / reference]. Figure 1 As shown, a one-way valve 8 is installed in the pipeline between the ORC power generation system 1 and the heating system 2, as well as in the pipeline between the first electromagnetic three-way valve 7 and the ORC power generation system 1 and the heating system 2, to prevent backflow.

[0024] Further, see Figure 2As shown, the ORC power generation system 1 includes an evaporator 101, a turbine 102, a generator 103, a condenser 104, a working fluid pump 105, and a preheater 106. The evaporator 101, the turbine 102, the condenser 104, the working fluid pump 105, and the preheater 106 are sequentially connected through corresponding pipelines to form a loop, and the tube-side outlet of the evaporator 101 is connected to the tube-side inlet of the preheater 106 through a corresponding pipeline. The generator 103 is connected to the turbine 102. During installation, the liquid inlet of the evaporator 101 is connected to the liquid outlet of the water cooling system 4 through a corresponding pipeline. The temperature sensor 6 and the first electromagnetic three-way valve 7 are installed on the pipeline between the evaporator 101 and the water cooling system 4.

[0025] For further details, please refer to [link / reference]. Figure 1 As shown, a flow sensor 9 is installed in the pipeline adjacent to the inlet of the return pump 5 to monitor the flow rate of water in the pipeline.

[0026] For further details, please refer to [link / reference]. Figure 1 As shown, a second electromagnetic three-way valve 10 is installed in the pipeline adjacent to the liquid inlet of the heating system 2. The second electromagnetic three-way valve 10 is also connected to the liquid inlet of the cooling tower 3 through a corresponding pipeline.

[0027] For further details, please refer to [link / reference]. Figure 1 As shown, the inlet of the cooling tower 3 is also connected to a replenishing pump 11 through a corresponding pipeline, and the replenishing pump 11 is used to replenish water to the cooling tower 3.

[0028] For further details, please refer to [link / reference]. Figure 1 As shown, a liquid level switch 12 is installed inside the cooling tower 3. The liquid level switch 12 includes a low liquid level switch and a high liquid level switch. During installation, the low liquid level switch is located in the middle of the interior of the cooling tower 3, and the high liquid level switch is located at the upper end of the interior of the cooling tower 3.

[0029] The working principle of this utility model is as follows:

[0030] In operation, the cooling water of the water-cooling system 4 absorbs heat from the data center server and is discharged through the outlet of the water-cooling system 4. It then flows through the temperature sensor 6. When the temperature sensor 6 detects that the water temperature is greater than 60°C, it controls the first electromagnetic three-way valve 7 to allow the cooling water to enter the tube side of the evaporator 101 and exchange heat with the organic working fluid in the shell side of the evaporator 101. At this time, the organic working fluid in the evaporator 101 absorbs heat and is converted into a high-pressure gas, which is output from the working fluid outlet on the evaporator 101 and transported into the turbine 102 through the pipeline. In the turbine 102, the working fluid expands and performs work, driving the generator 103 to generate electricity, thus realizing the conversion of thermal energy into electrical energy. After the organic working fluid has completed its work in the turbine 102, it enters the condenser 104 for condensation and liquefaction. Finally, under the action of the working fluid pump 105, it re-enters the evaporator 101 through the preheater 106 to continue exchanging heat with the tube side of the evaporator, thus realizing uninterrupted power generation.

[0031] The cooling water that has exchanged heat with the organic working fluid in the shell side of the evaporator 101 flows out through the outlet of the tube side of the evaporator 101 and then through the tube side of the preheater 106 before entering the heating system 2 through the corresponding pipes to provide heating using waste heat. When the cooling water flows through the tube side of the preheater 106, the waste heat is used to preheat the organic working fluid passing through the shell side of the preheater 106, so that the organic working fluid entering the shell side of the evaporator 101 begins to absorb heat in advance, thereby improving the heat exchange efficiency of the entire system.

[0032] When the temperature sensor 6 detects that the water temperature is less than 60°C, it controls the first electromagnetic three-way valve 7 to allow the cooling water to directly enter the heating system 2 through the corresponding pipeline for heating.

[0033] After circulating in the cooling water heating system 2, the water is transported into the cooling tower 3 for cooling by the return pump 5, and then re-enters the water cooling system 4 by the water pump of the water cooling system 4 to cool the data center server.

[0034] During operation, when the flow sensor 9 detects that the flow rate in the corresponding pipeline is less than the set threshold, it controls the return pump 5 to stop operating and controls the second electromagnetic three-way valve 10 to allow the liquid to flow directly back into the cooling tower 3; thereby effectively avoiding the impact on cooling of the data center due to leakage or blockage in the heating system 2.

[0035] In addition, during the coolant circulation process, when the liquid level inside the cooling tower 3 is lower than the low liquid level switch, the replenishment pump 11 is controlled to replenish the cooling water into the cooling tower 3, and when the liquid level is higher than the high liquid level switch, the replenishment pump 11 is controlled to stop running; in order to avoid the cooling system 4 from affecting the normal cooling effect on the data center server due to the loss of cooling water during the operation.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waste heat recovery system for data centers, characterized in that: The system includes an ORC power generation system (1), a heating system (2), a cooling tower (3), and a water-cooling system (4) located in the data center. The ORC power generation system (1), the heating system (2), the cooling tower (3), and the water-cooling system (4) are sequentially connected through corresponding pipelines to form a loop. A return pump (5) is installed in the pipeline between the heating system (2) and the cooling tower (3), and a temperature sensor (6) and a first electromagnetic three-way valve (7) are installed in the pipeline connecting the ORC power generation system (1) and the water-cooling system (4). The first electromagnetic three-way valve (7) is also connected to the pipeline between the ORC power generation system (1) and the heating system (2) through a corresponding pipeline.

2. The waste heat recovery system for data centers according to claim 1, characterized in that: A one-way valve (8) is provided in the pipeline between the ORC power generation system (1) and the heating system (2) and in the pipeline between the first electromagnetic three-way valve (7) and the ORC power generation system (1) and the heating system (2).

3. The waste heat recovery system for data centers according to claim 1 or 2, characterized in that: The ORC power generation system (1) includes an evaporator (101), a turbine (102), a generator (103), a condenser (104), a working fluid pump (105), and a preheater (106). The evaporator (101), the turbine (102), the condenser (104), the working fluid pump (105), and the preheater (106) are connected sequentially through corresponding pipelines to form a loop, and the tube outlet of the evaporator (101) is connected to the tube inlet of the preheater (106) through a corresponding pipeline. The generator (103) is connected to the turbine (102).

4. The waste heat recovery system for data centers according to claim 1, characterized in that: A flow sensor (9) is installed in the pipeline adjacent to the inlet of the return pump (5).

5. The waste heat recovery system for data centers according to claim 1, characterized in that: A second electromagnetic three-way valve (10) is installed in the pipeline adjacent to the liquid inlet of the heating system (2). The second electromagnetic three-way valve (10) is also connected to the liquid inlet of the cooling tower (3) through a corresponding pipeline.

6. The waste heat recovery system for data centers according to claim 1, characterized in that: The inlet of the cooling tower (3) is also connected to a replenishment pump (11) through a corresponding pipeline.

7. The waste heat recovery system for data centers according to claim 6, characterized in that: A liquid level switch (12) is installed inside the cooling tower (3).

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