Energy station stable cooling and heating system

Abstract

The utility model relates to the technical field of data center waste heat recovery, and provides a stable cooling and heating system of an energy station. Comprising a data center, the data center is connected with a refrigeration host, the refrigeration host is connected with a waste heat recovery host, the waste heat recovery host is connected with a closed circulation water tank, and the closed circulation water tank is connected with a user side; the refrigeration host is in coupling connection with a dual-working-condition refrigeration host, and the dual-working-condition refrigeration host is connected with a cold storage device and the data center; a cooling tower is connected between the refrigeration main machine and the waste heat recovery main machine, and an energy supplementing boiler is connected between the waste heat recovery main machine and the closed circulation water tank. The system has the beneficial effects that the system adopts the form of the refrigeration main machine, the double-working-condition refrigeration main machine, the cooling tower, the waste heat recovery main machine and the energy supplementing boiler, one set of system serves multiple scenes such as refrigeration, heating, hot water and steam at the same time, cold and hot operation of the system does not interfere with each other, the reliability of the system is improved, and the comprehensive operation energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology in data centers, specifically to a stable cooling and heating system for energy stations. Background Technology

[0002] IT equipment in data center server rooms, as a special type of equipment, needs to operate continuously without interruption, with a normal operating temperature of around 20°C. However, the equipment in data center server rooms dissipates a significant amount of heat during operation, requiring cooling systems to bring it back to its normal operating temperature. Existing traditional data center cooling methods and methods for utilizing data and waste heat have certain drawbacks, such as high energy consumption, inefficient use of waste heat, insufficient cooling capacity, high operating and maintenance costs, and high greenhouse gas emissions.

[0003] As data centers continue to expand in scale, the stability and energy consumption of cooling systems are becoming increasingly prominent issues. Data centers have extremely high requirements for system stability and reliability, and cooling systems generate a large amount of waste heat during the cooling process. This heat is usually directly released into the environment, resulting in energy waste. Therefore, how to improve the reliability and energy efficiency of data center systems, efficiently recover and utilize this waste heat, and maintain the stability of data center cooling during the waste heat recovery, extraction, and utilization process has become an urgent problem to be solved.

[0004] Therefore, this utility model is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a stable cooling and heating system for energy stations to solve the technical problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a stable cooling and heating system for an energy station, comprising: a data center, wherein the data center is connected to a refrigeration unit, the refrigeration unit is connected to a waste heat recovery unit, the waste heat recovery unit is connected to a closed-loop circulating water tank, and the closed-loop circulating water tank is connected to the user side;

[0007] The cooling host is coupled to a dual-mode cooling host, the dual-mode cooling host is connected to the cold storage device and the data center, and the dual-mode cooling host is selectively activated.

[0008] A cooling tower is connected between the refrigeration unit and the waste heat recovery unit, and a supplementary boiler is connected between the waste heat recovery unit and the closed-loop circulating water tank.

[0009] In an optional embodiment, when the waste heat from the data center is sufficient for the user side, electric valves E7, E8, and E9 are all opened, the cooling tower operates, the supplementary boiler does not operate, and the waste heat recovery host ensures that the temperature supplied to the closed-loop circulating water tank is stable and within the set temperature.

[0010] When the residual heat temperature of the data center is too low, gradually reduce the opening of electric valves E7 and E8, and simultaneously increase the opening of electric valve E9 until the system reaches a steady state; when the residual heat temperature of the data center is too high, gradually increase the opening of electric valves E7 and E8, and simultaneously decrease the opening of electric valve E9 until the system reaches a steady state.

[0011] In an optional embodiment, when the waste heat from the data center is insufficient for the user side, both electric valves E9 and E11 are opened, the cooling tower is not running, and the supplementary boiler is running to ensure that the temperature supplied to the closed-loop circulating water tank is stable and within the set temperature.

[0012] In an optional embodiment, when cooling under high load, electric proportional valves E18, E1, and E3 are all opened, and the refrigeration unit and the dual-condition refrigeration unit operate in coupled mode.

[0013] When the cooling load is low and the electricity price is low, the electric proportional valves E18, E1, E2, E3, E4, E5, and E6 are all opened, and the refrigeration unit operates at full frequency. The dual-condition refrigeration unit can store cold energy in the cold storage device to the maximum extent while meeting the terminal load until it is full.

[0014] In an optional embodiment, when the cooling load is low and the electricity price is high, the electric proportional valves E18, E1, E4, and E5 are all opened. The cold storage device operates alone or in conjunction with the cooling host to control the terminal return water temperature on the data center side until the terminal return water temperature is maintained at a steady state at the set temperature.

[0015] In an optional embodiment, the dual-condition cooling host, the cold storage device, and the data center exchange heat via a first plate heat exchanger.

[0016] In an optional embodiment, the user side includes a flash evaporator, a hot water consumption tank, and a second heat exchanger connected to the closed-loop water tank;

[0017] The flash evaporator is used to output low-temperature steam, the hot water tank is used to output hot water, and the second plate heat exchanger is used to exchange heat with the user.

[0018] In an optional embodiment, the flash evaporator is connected to a steam compressor, which is used to output high-temperature steam; a first water supply pipe is connected between the closed-loop circulating water tank and the flash evaporator, which is used to supply water to the closed-loop circulating water tank or the flash evaporator.

[0019] In an optional embodiment, the hot water tank is connected to a second water supply pipe, which is used to replenish water to the closed-loop water tank or the hot water tank.

[0020] The beneficial effects of this utility model are as follows:

[0021] The system adopts a configuration of a refrigeration unit + a dual-mode refrigeration unit + a cooling tower + a waste heat recovery unit + a supplementary boiler, serving multiple scenarios such as cooling, heating, hot water, and steam simultaneously. In particular, the cooling side uses the refrigeration unit for direct supply or coupled operation with multiple modules such as the dual-mode refrigeration unit and the cold storage device, and only serves the cooling demand. When the cooling demand is low and the electricity price is low, the cold storage device stores cold. The cold storage device adjusts the supply when the unit malfunctions or the electricity price is at its peak, resulting in higher system reliability. When supplying heating, hot water, and steam, the cooling tower, the waste heat recovery unit, and the supplementary boiler are coupled and controlled to operate. The system's cooling and heating operations do not interfere with each other, improving system reliability and reducing overall operating energy consumption. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure of an energy station stable cooling and heating system provided in an embodiment of this utility model.

[0024] Figure 2 A schematic diagram of the cooling side of an energy station stable cooling and heating system provided in an embodiment of this utility model. Figure 1 .

[0025] Figure 3 A schematic diagram of the cooling side of an energy station stable cooling and heating system provided in an embodiment of this utility model. Figure 2 .

[0026] Figure 4 This is a schematic diagram of the heating side of an energy station stable cooling and heating system provided in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the user side structure in an energy station stable cooling and heating system provided in an embodiment of the present invention.

[0028] The attached diagram is labeled as follows: 1-Data center, 2-Refrigeration host, 3-Dual-condition refrigeration host, 4-Cold storage device, 5-First heat exchanger, 6-Waste heat recovery host, 7-Cooling tower, 8-Supplemental boiler, 9-Closed-loop circulating water tank, 10-Flash evaporator, 11-Steam compressor, 12-Consumable hot water tank, 13-Second heat exchanger. Detailed Implementation

[0029] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "Multiple" means two or more, and "several" means any number including one, unless otherwise explicitly specified.

[0031] Please see the appendix Figure 1-5 The purpose of this embodiment is to provide a stable cooling and heating system for an energy station, including: a data center 1, the data center 1 is connected to a chiller 2, the chiller 2 is connected to a waste heat recovery unit 6, the waste heat recovery unit 6 is connected to a closed-loop circulating water tank 9, and the closed-loop circulating water tank 9 is connected to the user side; the chiller 2 is coupled to a dual-condition chiller 3, the dual-condition chiller 3 is connected to a cold storage device 4 and the data center 1; a cooling tower 7 is connected between the chiller 2 and the waste heat recovery unit 6, and a supplementary energy boiler 8 is connected between the waste heat recovery unit 6 and the closed-loop circulating water tank 9.

[0032] See appendix Figure 1 , 4 When the waste heat from data center 1 is sufficient for user use, electric valves E7, E8, and E9 are all open, cooling tower 7 operates, and supplementary boiler 8 does not operate. The waste heat recovery unit 6 ensures that the temperature supplied to the closed-loop circulating water tank 9 is stable and within the set temperature. When the waste heat temperature of data center 1 is too low, the opening of electric valves E7 and E8 is gradually reduced, while the opening of electric valve E9 is simultaneously increased until the system reaches a steady state. When the waste heat temperature of data center 1 is too high, the opening of electric valves E7 and E8 is gradually increased, while the opening of electric valve E9 is simultaneously decreased until the system reaches a steady state. Referring further to Appendices 1 and 4, when the waste heat from data center 1 is insufficient for user use, electric valves E9 and E11 are both open, cooling tower 7 does not operate, and supplementary boiler 8 operates to ensure that the temperature supplied to the closed-loop circulating water tank 9 is stable and within the set temperature.

[0033] This is an example embodiment; see appendix. Figure 5 The user side includes a flash evaporator 10 connected to a closed-loop circulating water tank 9, a hot water consumption tank 12, and a second heat exchanger 13. The flash evaporator 10 outputs low-temperature steam, the hot water consumption tank 12 outputs hot water, and the second heat exchanger 13 exchanges heat with the user. The flash evaporator 10 is connected to a steam compressor 11, which outputs high-temperature steam, meeting various steam usage scenarios. A first water supply pipe connects the closed-loop circulating water tank 9 and the flash evaporator 10, supplying water to either the closed-loop circulating water tank 9 or the flash evaporator 10. The hot water consumption tank 12 is connected to a second water supply pipe, supplying water to either the closed-loop circulating water tank 9 or the hot water consumption tank 12. This system adopts a configuration of a refrigeration unit + a dual-condition refrigeration unit + a cooling tower + a waste heat recovery unit + a supplementary boiler. One system simultaneously serves multiple scenarios including refrigeration, heating, hot water, and steam supply. The system operates without interference between cold and hot modes, improving system reliability and reducing overall energy consumption.

[0034] See appendix Figure 1-3 During high-load cooling, electric proportional valves E18, E1, and E3 are all open, and the chiller 2 and the dual-mode chiller 3 operate in tandem. During low-load cooling and low electricity prices, electric proportional valves E18, E1, E2, E3, E4, E5, and E6 are all open, and the chiller 2 operates at full frequency. The dual-mode chiller 3, while meeting the terminal load, maximizes its capacity to store cold energy in the cold storage device 4 until it is full. During low-load cooling and high electricity prices, electric proportional valves E18, E1, E4, and E5 are all open. The cold storage device 4 operates alone or in tandem with the chiller 2 to control the terminal return water temperature on the data center 1 side until the terminal return water temperature is maintained at a steady state at the set temperature, thus reducing costs. The cooling side utilizes either direct supply from the cooling unit 2 or coupled operation with multiple modules including the dual-mode cooling unit 3 and the cold storage device 4, serving only the cooling demand. When cooling demand is low and electricity prices are low, the cold storage device 4 stores cold energy. The cold storage device 4 adjusts its supply during unit malfunctions or peak electricity prices, resulting in higher system reliability. It should be noted that the dual-mode cooling unit 3, the cold storage device 4, and the data center 1 exchange heat via the first heat exchanger 5.

[0035] This invention can minimize the excess cold energy distribution in the system and reduce the unit's energy consumption, and realize the intelligent coupling control of the waste heat recovery host 6 and the supplementary boiler 8 system.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy station stable cold and heat supply system, characterized in that, include: Data center (1), the data center (1) is connected to a cooling host (2), the cooling host (2) is connected to a waste heat recovery host (6), the waste heat recovery host (6) is connected to a closed-loop circulating water tank (9), and the closed-loop circulating water tank (9) is connected to the user side; The cooling host (2) is coupled to the dual-condition cooling host (3), the dual-condition cooling host (3) is connected to the cold storage device (4) and the data center (1), and the dual-condition cooling host (3) is selectively turned on; A cooling tower (7) is connected between the refrigeration host (2) and the waste heat recovery host (6), and a supplementary boiler (8) is connected between the waste heat recovery host (6) and the closed-loop circulating water tank (9).

2. The energy station stable cooling and heating system of claim 1, wherein, When the waste heat of the data center (1) is sufficient for the user side, electric valves E7, E8, and E9 are all opened, the cooling tower (7) is running, the supplementary boiler (8) is not running, and the waste heat recovery host (6) ensures that the temperature supplied to the closed circulating water tank (9) is stable and within the set temperature. When the residual heat temperature of the data center (1) is too low, gradually reduce the opening of the electric valves E7 and E8, and simultaneously increase the opening of the electric valve E9 until the system reaches a steady state; when the residual heat temperature of the data center (1) is too high, gradually increase the opening of the electric valves E7 and E8, and simultaneously reduce the opening of the electric valve E9 until the system reaches a steady state.

3. The energy station stable cooling and heating system of claim 2, wherein, When the waste heat from the data center (1) is insufficient for the user side, the electric valves E9 and E11 are both opened, the cooling tower (7) is not running, and the supplementary boiler (8) is running to ensure that the temperature supplied to the closed-loop circulating water tank (9) is stable and within the set temperature.

4. The energy station stable cooling and heating system of claim 1, wherein, When the cooling load is high, the electric proportional valves E18, E1 and E3 are all opened, and the cooling host (2) and the dual-condition cooling host (3) are coupled to operate. When the cooling load is low and the electricity price is low, the electric proportional valves E18, E1, E2, E3, E4, E5 and E6 are all opened, the refrigeration host (2) runs at full frequency, and the dual-condition refrigeration host (3) stores cold energy in the cold storage device (4) to the maximum capacity while meeting the terminal load until it is full.

5. The energy station stable cooling and heating system of claim 4, wherein, When the cooling load is low and the electricity price is high, the electric proportional valves E18, E1, E4 and E5 are all opened. The cold storage device (4) is operated alone or the cold storage device (4) is coupled with the cooling host (2) to control the end return water temperature on the side of the data center (1) until the end return water temperature is maintained at a steady state at the set temperature.

6. The energy station stable cooling and heating system of claim 5, wherein, The dual-condition cooling host (3), the cold storage device (4), and the data center (1) exchange heat through the first plate heat exchanger (5).

7. The energy station stable cooling and heating system of claim 1, wherein, The user side includes a flash evaporator (10) connected to the closed-loop circulating water tank (9), a hot water consumption tank (12), and a second heat exchanger (13); The flash evaporator (10) is used to output low-temperature steam, the hot water tank (12) is used to output hot water, and the second heat exchanger (13) is used to exchange heat with the user.

8. The energy station stable cooling and heating system of claim 7, wherein, The flash evaporator (10) is connected to a steam compressor (11), which is used to output high-temperature steam; a first water supply pipe is connected between the closed-loop circulating water tank (9) and the flash evaporator (10), which is used to supply water to the closed-loop circulating water tank (9) or the flash evaporator (10).

9. The energy station stable cooling and heating system of claim 7, wherein, The hot water tank (12) is connected to a second water supply pipe, which is used to supply water to the closed-loop water tank (9) or the hot water tank (12).

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