TW202207784A - Data center heat recovery system - Google Patents

Abstract

One embodiment of the present invention provides a data center heat recovery system. The data center heat recovery system includes a building heat pump system, a heat exchanger, and at least one modular data center. The building heat pump system provides a first fluid when ambient temperature is lower than a first preset temperature. The heat exchanger is connected to the building heat pump system through a first pipe, and receives the first fluid when the ambient temperature is lower than the first preset temperature. The modular data center is connected to the heat exchanger through a second pipe. The modular data center includes a data center. When the data center is running, heat is generated, a second fluid flows in the second pipe, and the heat exchanger collects the heat in the second fluid and transfers the heat through the first fluid to the building heat pump system.

Description

Data Center Heat Recovery System

The invention belongs to the field of heat recovery, in particular to a data center heat recovery system.

In some relatively cold areas, most buildings have heat pump systems to heat the interior in winter. However, during the operation of the building's computer room or air conditioner, the waste heat generated by the data center is lost to the external environment, which cannot be obtained. Effective use results in a waste of resources.

An embodiment of the present invention provides a data center heat recovery system, including: a building heat pump system for providing a first fluid when the ambient temperature is below a first preset temperature; a heat exchanger connected to the building heat pump system by a first conduit, receiving a first fluid from the building heat pump system when the ambient temperature is lower than a first preset temperature, and communicating with the building heat pump system Form a fluid circulation system; At least one modular data center, each of the modular data centers includes an air-cooled water chiller and a data center, each of the modular data centers is connected to the heat exchanger by a second pipe , the data center generates heat during operation, a second fluid flows in the second pipe, and the air-cooled ice water machine is used to cool the second fluid when the ambient temperature is higher than the second preset temperature Perform refrigeration; when the ambient temperature is lower than the first preset temperature, the air-cooled water chiller does not work, and the second fluid after passing through the data center is transmitted to the heat exchanger, and the heat exchange The device collects the heat in the second fluid and transmits the collected heat to the building heat pump system through the first fluid in the first pipe, and the building heat pump system absorbs the heat and uses it for Heat the building.

The above-mentioned modular data center heat recovery system organically collects the waste heat generated by the computer room or the air-conditioning data center through the second pipeline. By setting the heat exchanger, the heat exchanger is connected to the building heat pump system through the first pipeline. A cycle is formed, and the heat exchanger transmits the collected waste heat to the heat pump system of the building, and the heat pump system of the building absorbs the heat and then heats the room, avoiding unnecessary waste of this part of the heat.

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

1, an embodiment of the present invention provides a data center heat recovery system 100, including: a building heat pump system 10, a heat exchanger 11 connected to the building heat pump system 10 through a first pipe 13, and at least one mold Group data center 12 .

The building heat pump system 10 is used to provide a first fluid (not shown) when the ambient temperature is lower than the first preset temperature. The heat exchanger 11 receives the first fluid from the building heat pump system 10 when the ambient temperature is lower than the first preset temperature and forms a fluid circulation system with the building heat pump system 10 .

Each of the modular data centers 12 includes an air-cooled water chiller 122 and a data center 124 , and each of the modular data centers 12 is connected to the heat exchanger 11 through the second pipe 15 , so The data center 124 generates heat during operation, and a second fluid (not shown) flows in the second pipe 15 . The air-cooled ice water machine 122 is used to refrigerate the second fluid when the ambient temperature is higher than the second preset temperature; when the ambient temperature is lower than the first preset temperature, the air-cooled The ice water machine 122 does not work, the second fluid after passing through the data center 124 is transmitted to the heat exchanger 11, and the heat exchanger 11 collects the heat in the second fluid and passes the collected heat through the heat exchanger 11. The first fluid in the first pipeline 13 is transmitted to the building heat pump system 10, and the building heat pump system 10 absorbs the heat and then uses it to supply heat to the building.

In particular, the first preset temperature in this embodiment is 10 degrees Celsius, and the second preset temperature is 20 degrees Celsius. In other embodiments, the first preset temperature is not limited to 10 degrees Celsius, and may be higher than or lower than At 10 degrees Celsius, the second preset temperature is not limited to 20 degrees Celsius, and may be higher or lower than 20 degrees Celsius, as long as the first preset temperature is guaranteed to be lower than the second preset temperature. In this embodiment, the heat exchanger 11 is a plate heat exchanger. In other embodiments, the heat exchanger 11 is not limited to a plate heat exchanger.

Continuing to refer to FIG. 1 , the data center heat recovery system 100 in this embodiment further includes an energy storage tank 14 , and the second pipe 15 includes a first sub-pipe 152 , a second sub-pipe 154 , and a third sub-pipe 156 and the fourth sub-pipe 158 . The data center heat recovery system 100 further includes a plurality of water pumps 16 and at least one electric two-way valve 18 . The water pump 16 includes a first water pump 161 , a second water pump 162 , a third water pump 163 , a fourth water pump 164 and a fifth water pump 165 . A fluid, the first water pump 161 , the second water pump 162 , the third water pump 163 and the fourth water pump 164 are used to transport the second fluid in the second pipeline 15 . The electric two-way valve 18 includes a plurality of first electric two-way valves 182 and a plurality of second electric two-way valves 184. The opening or closing of the electric two-way valve 18 is used to control the flow of the second fluid in the first two-way valve. The flow within the second conduit 15 .

When the ambient temperature is lower than the first preset temperature, the data center heat recovery system 100 of this embodiment automatically turns off the first water pump 161 , the second water pump 162 and the third water pump 163 , and turns off all the water pumps at the same time. The second electric two-way valve 184 and other components (the fourth water pump 164, the fifth water pump 165, the first electric two-way valve 182, and the third electric two-way valve 186, etc.) are maintained in an open state. The air-cooled chiller 122 stops working, and the data center heat recovery system 100 is in a low temperature (ie, when the ambient temperature is lower than the first preset temperature) heat recovery mode.

When the ambient temperature is lower than the first preset temperature, the data center heat recovery system 100 of this embodiment automatically turns off the first water pump 161 , the second water pump 162 , the third water pump 163 and the fifth water pump 165 , close all the second electric two-way valve 184 and the third electric two-way valve 186 at the same time, and other components (the fourth water pump 164 and the first electric two-way valve 182, etc.) remain open. When the cold water chiller 122 stops working, the data center heat recovery system 100 is in a low temperature emergency cooling mode.

When the ambient temperature is higher than the second preset temperature, the data center heat recovery system 100 of this embodiment automatically turns off the fourth water pump 164 and the fifth water pump 165, and simultaneously turns off all the first electric two-way The valve 182, the other components mentioned above (such as the first water pump 161, the second water pump 162, the third water pump 163, the second electric two-way valve 184, and the third electric two-way valve 186, etc.) are maintained in the open state, at this time The air-cooled water chiller 122 is used to cool the second fluid in the second pipe 15, and the building heat pump system 10 also stops working, and the data center heat recovery system 100 is at a high temperature (ie when the ambient temperature is higher than the second preset temperature) mode.

When the ambient temperature is higher than the second preset temperature, the data center heat recovery system 100 of this embodiment automatically turns off the fourth water pump 164 and the fifth water pump 165 , and simultaneously turns off all the first electric two-way valves 182 And each of the third electric two-way valve 186, the other components mentioned above (such as the first water pump 161, the second water pump 162, the third water pump 163 and the second electric two-way valve 184, etc.) When the air-cooled water chiller 122 is used to cool the second fluid in the second pipeline 15, and the building heat pump system 10 also stops working, the data center heat recovery system 100 is in the High temperature emergency cooling mode.

Referring to FIG. 2 , in the low-temperature heat recovery mode of this embodiment, the energy storage tank 14 is connected to the heat exchanger 11 through the first sub-pipe 152 , and the energy storage tank 14 is connected to the heat exchanger 11 through the first sub-pipeline 152 . Three sub-pipes 156 are connected to at least one of the data centers 124 . The energy storage tank 14 transmits the second fluid to each of the data centers 124 through the third sub-pipes 156 , and each of the data centers 124 generates heat when the computer room (or air conditioner) works, and the heat is conducted The second fluid into the third sub-pipe 156 makes the second fluid a thermal fluid.

Continuing to refer to FIG. 2 , since the fifth water pump 165 located between the building heat pump system 10 and the heat exchanger 11 is kept on, the building heat pump system 10 can be sent to the The heat exchanger 11 conveys the first fluid, which flows into the heat exchanger 11 . At the same time, the thermal fluid passing through each of the data centers 124 is transmitted to the heat exchanger 11 through the second pipe 15 . The hot fluid flows into the heat exchanger 11 , the heat exchanger 11 collects the heat in the hot fluid and transfers the collected heat to the heat exchanger through the first fluid in the first pipe 13 . The building heat pump system 10 is used to supply heat to the building after absorbing the heat. After the thermal fluid loses heat, it becomes the second fluid, and the second fluid is transmitted to the energy storage tank 14 through the first sub-pipe 152 for storage.

Further referring to FIG. 2 , the energy storage tank 14 stores the second fluid after passing through the heat exchanger 11 through the first sub-pipe 152 , and uses the third sub-pipe 156 for The data center 124 conducts heat dissipation and cooling. The second fluid absorbs waste heat generated by each of the data centers 124 while dissipating heat from each of the data centers 124 . At this time, the second fluid enters the heat exchanger 11 through the second pipe 15, and the heat exchanger 11 collects the heat in the second fluid and conducts it to the first fluid. The building heat pump system 10 absorbs the heat and uses it to heat the building. The second fluid after being absorbed by the heat exchanger 11 is directly transmitted to the energy storage tank 14 through the first sub-pipeline 152 , and the energy storage tank 14 passes through the third sub-pipeline. 156 delivers the second fluid to each of the data centers 124 , forming a cycle to fully utilize the waste heat of the data centers 124 .

In this embodiment, in the low-temperature heat recovery mode, the data center heat recovery system 100 effectively utilizes the waste heat generated by the air conditioner or the data center 124 in the equipment room, so that the collected waste heat finally enters the building heat pump system 10, so The building heat pump system 10 absorbs the waste heat and then heats the room, which avoids waste of resources and has good practical value.

Referring to FIG. 3 , in the low temperature emergency cooling mode of this embodiment, the second fluid flowing through the data center 124 is transported to the heat exchanger 11 through the second pipe 15 , and the heat exchanger The heat collected by 11 is continuously accumulated, and the second fluid after passing through the heat exchanger 11 is transported to the energy storage tank 14 through the first sub-pipeline 152, and the energy storage tank 14 is passed through the first sub-pipeline 152. The three sub-pipes 156 then dissipate heat to each of the data centers 124 to avoid equipment failure due to the inability to release heat in the data centers 124 .

In the low-temperature emergency cooling mode of this embodiment, the data center heat recovery system 100 can temporarily maintain the heat dissipation of the data center 124 by the second fluid stored in the energy storage tank 14 to avoid the data The center 124 failed the device because the heat could not be released.

Referring to FIG. 4 , in the high temperature mode of this embodiment, the energy storage tank 14 is connected to the at least one air-cooled ice water machine 122 through the second sub-pipe 154 , and the at least one air-cooled ice water machine 122 is connected. The machine 122 refrigerates the second fluid after passing through the data center 124 to obtain cold fluid. The energy storage tank 14 stores the cold fluid flowing through each of the air-cooled water chillers 122 through the second sub-pipeline 154 , and is used for each of the data through the fourth sub-pipeline 158 . The center 124 conducts heat dissipation and cooling.

Further referring to FIG. 4 , a third electric two-way valve 186 is connected in parallel between the air-cooled water chiller 122 and the data center 124 in each of the modular data centers 12 . By opening or closing the third electric two-way valve 186 to control the flow rate of the second fluid through the air-cooled ice water machine 122 to avoid high temperature (that is, the ambient temperature is higher than the second preset temperature). set temperature) and when the data center 124 is operating normally, the flow rate of the second fluid flowing through the air-cooled ice water machine 122 is too low (for example, lower than a preset flow rate), reducing the The cooling effect of the data center 124 . Of course, when the data center 124 is operating at a low load, the air-cooled water chiller 122 connected in parallel with the data center 124 will also operate at a low load. The ice water machines 122 are all in working state, so the probability of equipment damage is high.

In this embodiment, the so-called group control strategy of the air-cooled water chiller 122 in the air-conditioning system is adopted, that is, the automatic control technology is used to automatically monitor the refrigeration equipment (eg, chillers, water pumps, and valves). The purpose is to stop the corresponding air-cooled chiller 122 from working when a certain data center 124 is operating at a low load, and the supply source of the cold fluid of the energy storage tank 14 is transferred to other higher air-conditioning loads. The air-cooled ice water machine 122 is supplied to improve the operation efficiency of the air-cooled ice water machine 122 and reduce equipment maintenance costs.

In this embodiment, in the high temperature mode, the cold fluid generated by each of the air-cooled water chillers 122 is concentrated in the energy storage tank 14 , and then the energy storage tank 14 transfers the second fluid through the energy storage tank 14 . The fourth sub-pipes 158 are transported to each of the data centers 124 for heat dissipation.

Referring to FIG. 5 , in the high-temperature emergency cooling mode in this embodiment, when the ambient temperature is higher than the second preset temperature, each of the air-cooled water chillers 122 stops working due to power failure or other factors. At this time, the energy storage tank 14 cannot collect cold fluid through the second sub-pipe 154 . If the air-cooled water chiller 122 stops working due to a power failure, the corresponding data center 124 also stops working, but the large amount of heat generated by the data center 124 before it stops working cannot be quickly dissipated. At this time, the energy storage tank 14 transmits the second fluid to each of the data centers 124 through the fourth sub-pipes 158 for heat dissipation, so as to prevent the data centers 124 from overheating. If the air-cooled water chiller 122 stops working due to other reasons, the corresponding data center 124 can work normally, the data center 124 continues to generate heat, and the second energy storage tank 14 Each time the second fluid circulates through the data center 124, its heat will increase until the second fluid in the energy storage tank 14 cannot dissipate heat to the data center 124, during which the energy storage tank 14 can An effective heat dissipation effect is provided to the data center 124 to avoid equipment failure of the data center 124 due to the inability to release heat.

In this embodiment, in the high temperature emergency cooling mode, after the air-cooled water chiller 122 stops working, the second fluid stored in the energy storage tank 14 can temporarily maintain the heat dissipation of the data center , to avoid equipment failure of the data center 124 due to the inability to release heat.

In the low temperature heat recovery mode, the modular data center heat recovery system 100 collects the waste heat generated by the computer room or the air-conditioning data center 124 by means of the second pipe 15 , the heat exchanger 11 is provided, and then the first heat exchanger 11 is provided. The pipeline 13 makes the heat exchanger 11 and the building heat pump system 10 form a circulation, the heat exchanger 11 transmits the collected waste heat to the building heat pump system 10, and the building heat pump system 10 absorbs the heat and heats the room, avoiding the need for This part of the heat is wasted for no reason.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. without departing from the spirit and scope of the technical solutions of the present invention.

100: Data Center Heat Recovery Systems 10: Building heat pump systems 11: Heat Exchanger 12: Modular data center 13: First Pipeline 122: Air-cooled ice water machine 124: Data Center 14: Energy storage tank 15: Second Pipeline 152: First sub-pipeline 154: Second sub-pipeline 156: Third sub-pipeline 158: Fourth sub-pipeline 16: water pump 161: The first water pump 162: Second water pump 163: The third water pump 164: Fourth water pump 165: Fifth Pump 18: Electric two-way valve 182: The first electric two-way valve 184: The second electric two-way valve 186: The third electric two-way valve

FIG. 1 is a schematic diagram of a data center heat recovery system according to an embodiment of the present invention.

FIG. 2 is a schematic working diagram of a data center heat recovery system at a low temperature according to an embodiment of the present invention.

FIG. 3 is a working schematic diagram of emergency cooling when the heat recovery system of a data center is at a low temperature according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of the operation of the data center heat recovery system at a high temperature according to an embodiment of the present invention.

FIG. 5 is a working schematic diagram of emergency cooling when a heat recovery system of a data center is at a high temperature according to an embodiment of the present invention.

100: Data Center Heat Recovery Systems

10: Building heat pump systems

11: Heat Exchanger

12: Modular data center

13: First Pipeline

122: Air-cooled ice water machine

124: Data Center

14: Energy storage tank

15: Second Pipeline

152: First sub-pipeline

154: Second sub-pipeline

156: Third sub-pipeline

158: Fourth sub-pipeline

16: water pump

161: The first water pump

162: Second water pump

163: The third water pump

164: Fourth water pump

165: Fifth Pump

18: Electric two-way valve

182: The first electric two-way valve

184: The second electric two-way valve

186: The third electric two-way valve

Claims (10)

A data center heat recovery system is improved by including: a building heat pump system for providing a first fluid when the ambient temperature is below a first preset temperature; a heat exchanger connected to the building heat pump system by a first conduit, receiving a first fluid from the building heat pump system when the ambient temperature is lower than a first preset temperature, and communicating with the building heat pump system make up a fluid circulation system; and At least one modular data center, each of the modular data centers includes an air-cooled water chiller and a data center, each of the modular data centers is connected to the heat exchanger by a second pipe , the data center generates heat during operation, a second fluid flows in the second pipe, and the air-cooled ice water machine is used to cool the second fluid when the ambient temperature is higher than the second preset temperature Perform refrigeration; when the ambient temperature is lower than the first preset temperature, the air-cooled water chiller does not work, and the second fluid after passing through the data center is transmitted to the heat exchanger, and the heat exchange The device collects the heat in the second fluid and transmits the collected heat to the building heat pump system through the first fluid in the first pipe, and the building heat pump system absorbs the heat and uses it for Heat the building. The data center heat recovery system according to claim 1, wherein the data center heat recovery system further comprises an energy storage tank, and the second pipe comprises a first sub-pipe, a second sub-pipe, a third sub-pipe and A fourth sub-pipeline, the energy storage tank is connected to the heat exchanger through the first sub-pipeline, and the energy storage tank is connected to at least one of the data centers through the fourth sub-pipeline. The data center heat recovery system according to claim 2, wherein when the ambient temperature is lower than the first preset temperature, the energy storage tank is connected to at least one of the data centers through the third sub-pipeline, and the The energy storage tank stores the second fluid after passing through the heat exchanger through the first sub-pipeline, and is used for heat dissipation and cooling of the data center through the third sub-pipeline. The data center heat recovery system according to claim 2, wherein when the ambient temperature is higher than a second preset temperature, the energy storage tank communicates with the at least one air-cooled water chiller through the second sub-pipeline connected, the at least one air-cooled water chiller refrigerates the second fluid passing through the data center to obtain cold fluid, and transmits the cold fluid to the energy storage tank through the second sub-pipeline, The energy storage tank transmits the cold fluid to the at least one data center for heat dissipation through the fourth sub-pipeline. The data center heat recovery system according to claim 1, wherein the data center heat recovery system further comprises a plurality of water pumps and at least one electric two-way valve, and the plurality of water pumps are used to transport the water in the first pipeline. The first fluid and the second fluid in the second pipeline are controlled by opening or closing the electric two-way valve to control the flow of the second fluid in the second pipeline. The data center heat recovery system according to claim 5, wherein one electric two-way valve is connected in parallel between the air-cooled water chiller and the data center in each of the modular data centers, When the ambient temperature is higher than the second preset temperature, the electric two-way valve is used to control the flow through the air-cooled water chiller to avoid the flow of water flowing through the air-cooled water chiller during normal operation of the data center. The flow rate is lower than the preset flow rate. The data center heat recovery system of claim 1, wherein the building heat pump system does not participate in the operation of the data center heat recovery system when the temperature is higher than the second preset temperature. The data center heat recovery system of claim 1, wherein the heat exchanger is a plate heat exchanger. The data center heat recovery system according to claim 1, wherein the first preset temperature is 10 degrees Celsius. The data center heat recovery system according to claim 1, wherein the second preset temperature is 20 degrees Celsius.

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