CN220570842U - Data center cooling system - Google Patents
Data center cooling system Download PDFInfo
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- CN220570842U CN220570842U CN202321435878.9U CN202321435878U CN220570842U CN 220570842 U CN220570842 U CN 220570842U CN 202321435878 U CN202321435878 U CN 202321435878U CN 220570842 U CN220570842 U CN 220570842U
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- 238000001816 cooling Methods 0.000 title claims abstract description 200
- 230000001105 regulatory effect Effects 0.000 claims abstract description 163
- 238000009825 accumulation Methods 0.000 claims abstract description 137
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 238000012544 monitoring process Methods 0.000 claims description 31
- 230000008901 benefit Effects 0.000 abstract description 14
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 description 10
- 239000000969 carrier Substances 0.000 description 9
- 230000005611 electricity Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a data center cooling system, which comprises a first heat exchange branch, a second heat exchange branch and a third heat exchange branch, wherein the first heat exchange branch comprises a cooling tower and a cold side runner of a water chilling unit which are sequentially connected in series; the second heat exchange branch comprises a first cold accumulation tank, a first flow regulating device and a cold side flow channel of the first heat exchanger which are sequentially connected in series; the third heat exchanger comprises a data machine room, a hot side flow passage of the first heat exchanger and a hot side flow passage of the water chilling unit which are sequentially connected in series; the outlet end of the cold side flow passage of the water chilling unit is communicated with the inlet of the cooling tower, and the outlet end of the cold side flow passage of the first heat exchanger is communicated with the inlet of the first cold accumulation tank; and the outlet end of the hot side flow passage of the water chilling unit is communicated with the inlet of the data machine room. Under the normal working state of the data center cooling system, redundant cold energy of the first cold accumulation tank can be immediately absorbed through the first heat exchanger, so that the waste of the redundant cold energy in the first cold accumulation tank is avoided, and the economic benefit of the data center cooling system is improved.
Description
Technical Field
The utility model relates to the technical field of regional temperature control, in particular to a cooling system of a data center.
Background
With the rise of cloud computing, big data and artificial intelligence, the demand for large data centers is increasing. The data center is used as a large consumer of energy consumption, and is used as a main carrier of a future leading edge technology, and the main requirements of the infrastructure side are energy saving, rapid and flexible deployment and cost optimization, and the cooling system is used as one of key links of the energy consumption of the data center and is an important direction of energy consumption optimization. During the operation of the data center, the cooling system is required to continuously supply cold energy to the data center for 24 hours in the whole year so as to take away heat generated by the operation of equipment.
The cooling system of cooling water set, cooling tower and cold-storage tank combination is the cooling method that data center mostly adopted at present, and the cooling water after the cooling tower cooling absorbs the heat of chilled water in cooling water set department, and the high temperature chilled water of temperature rising returns the cooling tower and continues the cooling, and then in cooling water set department temperature reduction, then return the data computer lab and cool down, when data center is unusual outage or refrigerating system goes wrong, cold-storage tank can provide the cold volume for data center temporarily, maintains its normal operating, and chilled water in the cold-storage tank can exchange heat with the cooling water set, and the chilled water after the cooling flows back in the cold-storage tank.
However, in the above cooling system, during the actual operation, the medium temperature in the cold storage tank is greatly lower than the emergency design temperature in some time periods, that is, the cold capacity in the cold storage tank is not only required to meet the emergency requirement, but also has great redundant cold capacity, and the cold storage tank is usually in a standby state, so that the economic benefit of the cooling system is reduced.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is that in the actual operation process, in some time periods, the medium temperature in the cold storage tank is greatly lower than the emergency design temperature, namely, the cold quantity in the cold storage tank is greatly redundant cold quantity besides meeting the emergency requirement, and the cold storage tank is usually in a standby state, so that the economic benefit of the refrigeration system is reduced.
To this end, the present utility model provides a data center cooling system comprising:
the first heat exchange branch comprises a cooling tower and a cold side runner of a water chilling unit which are sequentially connected in series;
the second heat exchange branch comprises a first cold accumulation tank, a first flow regulating device and a cold side flow channel of the first heat exchanger which are sequentially connected in series;
the third heat exchange branch comprises a data machine room, a hot side flow passage of the first heat exchanger and a hot side flow passage of the water chilling unit which are sequentially connected in series;
The outlet end of the cold side runner of the water chilling unit is communicated with the inlet of the cooling tower;
the outlet end of the cold side runner of the first heat exchanger is communicated with the inlet of the first cold accumulation tank;
and the outlet end of the hot side runner of the water chilling unit is communicated with the inlet of the data machine room.
Optionally, the data center cooling system described above,
a second flow regulating device is also connected in series between the cooling tower and the cold side flow passage of the water chilling unit;
a third flow adjusting device is also connected in series between the data machine room and the hot side flow channel of the first heat exchanger;
a fourth flow regulating device is further connected in series between the hot side flow passage of the first heat exchanger and the hot side flow passage of the water chilling unit.
Optionally, the above data center cooling system further includes:
the monitoring piece is positioned in the first cold accumulation tank and is used for monitoring the temperature in the first cold accumulation tank;
the first flow regulating device controls the flow between the first cold accumulation tank and the first heat exchanger cold side flow channel according to the monitoring information of the monitoring piece;
when the temperature monitored by the monitoring piece is lower than the preset temperature, the first cold storage tank is provided with redundant cold energy, the first flow regulating device, the second flow regulating device, the third flow regulating device and the fourth flow regulating device are opened, a first cold carrier in the first cold storage tank enters the cold side channel of the first heat exchanger through the first flow regulating device, meanwhile, a heat carrier in the data machine room enters the hot side channel of the first heat exchanger through the third flow regulating device, the first cold carrier exchanges heat with the heat carrier, a first cold carrier after temperature rising in the cold side channel of the first heat exchanger enters the first cold storage tank, meanwhile, a heat carrier after precooling enters the hot side channel of the cold water machine set through the fourth flow regulating device, at the moment, a second cold carrier in the cooling tower enters the cold side channel of the cold water machine set through the second flow regulating device, the heat carrier after temperature rising enters the heat carrier of the cold water machine set, and the heat carrier after temperature rising enters the data cooling tower, and the data after the second carrier enters the heat carrier after temperature rising, and the data cooling tower is cooled.
Optionally, the above data center cooling system further includes:
the emergency branch comprises a first cold accumulation tank, a fifth flow regulating device, a fourth flow regulating device, a hot side flow passage of the water chilling unit and the data machine room which are sequentially connected in series.
Optionally, the above data center cooling system further includes:
the first cold accumulation branch comprises the first cold accumulation tank, the fifth flow regulating device, the fourth flow regulating device, a hot side flow passage of the water chilling unit and a sixth flow regulating device which are sequentially connected in series;
the sixth flow regulating device is communicated with the inlet of the first cold accumulation tank.
Optionally, the above data center cooling system further includes:
and the fourth heat exchange branch comprises a data machine room, a fourth flow regulating device and a hot side flow passage of the water chilling unit which are sequentially connected in series.
Optionally, the above data center cooling system further includes:
the outlet end of the hot side flow passage of the second heat exchanger is divided into two paths, wherein one path is that the outlet end of the hot side flow passage of the second heat exchanger is communicated with the inlet of the first cold accumulation tank through a seventh flow regulating device and a sixth flow regulating device; the other path is that the outlet end of the hot side flow passage of the second heat exchanger is communicated with the inlet of the data machine room through the seventh flow regulating device;
The inlet end of the hot side flow channel of the second heat exchanger is divided into two paths, wherein one path is communicated with the outlet of the data machine room, and the other path is communicated with the outlet end of the hot side flow channel of the first heat exchanger;
and the inlet end of the second heat exchanger cold side flow passage is communicated with the outlet of the cooling tower through an eighth flow regulating device, and the outlet end of the second heat exchanger cold side flow passage is communicated with the inlet of the cooling tower.
The present utility model also provides a data center cooling system comprising:
the first heat exchange branch comprises a cooling tower and a cold side runner of a water chilling unit which are sequentially connected in series;
the fifth heat exchange branch comprises a second cold accumulation tank, a data machine room and a hot side flow channel of a water chilling unit which are sequentially connected in series;
the first cold accumulation tank is communicated with the second cold accumulation tank through a fifth flow regulating device;
the outlet end of the cold side runner of the water chilling unit is communicated with the inlet of the cooling tower;
and the outlet end of the hot side runner of the water chilling unit is communicated with the inlet of the second cold storage tank.
Optionally, the data center cooling system described above,
a second flow regulating device is also connected in series between the cooling tower and the cold side flow passage of the water chilling unit;
a fourth flow regulating device is also connected in series between the data machine room and the hot side flow passage of the water chilling unit;
The monitoring piece is positioned in the first cold accumulation tank and is used for monitoring the temperature in the first cold accumulation tank;
the fifth flow regulating device controls the flow between the first cold accumulation tank and the second cold accumulation tank according to the monitoring information of the monitoring piece;
when the temperature monitored by the monitoring piece is lower than the preset temperature, the first cold storage tank is provided with redundant cold energy, the second flow regulating device, the fourth flow regulating device and the fifth flow regulating device are opened, a low-temperature heat carrier in the first cold storage tank enters the second cold storage tank through the fifth flow regulating device, the low-temperature heat carrier in the second cold storage tank enters the data machine room, then enters a hot side flow passage of the water chilling unit through the fourth flow regulating device, meanwhile, a second cold carrier in the cooling tower enters the cold side flow passage of the water chilling unit through the second flow regulating device, the warmed heat carrier exchanges heat with the second cold carrier, the warmed heat carrier in the water chilling unit enters the second cold storage tank, and the warmed second cold carrier flows back into the cooling tower again.
Optionally, the data center cooling system includes:
the second cold accumulation branch comprises a second cold accumulation tank, a data machine room, a fourth flow regulating device, a hot side flow passage of the water chilling unit, a sixth flow regulating device and the first cold accumulation tank which are sequentially connected in series.
Optionally, the data center cooling system described above,
the outlet end of the hot side flow passage of the second heat exchanger is divided into two paths, wherein one path is communicated with the inlet of the first cold storage tank through a seventh flow regulating device and a sixth flow regulating device; the other path is that the outlet end of the hot side flow passage of the second heat exchanger is communicated with the second cold accumulation tank through the seventh flow regulating device;
the inlet end of the hot side runner of the second heat exchanger is communicated with the data machine room;
the inlet end of the cold side flow channel of the second heat exchanger is communicated with the outlet of the cooling tower through an eighth flow regulating device;
and the outlet end of the second heat exchanger cold side runner is communicated with the inlet of the cooling tower.
The technical scheme provided by the utility model has the following advantages:
1. the utility model provides a data center cooling system, which comprises a first heat exchange branch, a second heat exchange branch and a third heat exchange branch, wherein the first heat exchange branch comprises a cooling tower and a cold side flow channel of a water chilling unit which are sequentially connected in series; the second heat exchange branch comprises a first cold accumulation tank, a first flow regulating device and a cold side flow channel of the first heat exchanger which are sequentially connected in series; the third heat exchange branch comprises a data machine room, a hot side flow passage of the first heat exchanger and a hot side flow passage of the water chilling unit which are sequentially connected in series; the outlet end of the cold side flow passage of the water chilling unit is communicated with the inlet of the cooling tower, and the outlet end of the cold side flow passage of the first heat exchanger is communicated with the inlet of the first cold accumulation tank; and the outlet end of the hot side flow passage of the water chilling unit is communicated with the inlet of the data machine room. When the first cold accumulation tank has extremely large redundant cold quantity, the first flow regulating device is opened, and a first cold carrier in the first cold accumulation tank enters a cold side flow channel of the first heat exchanger through the first flow regulating device, namely, the second heat exchange branch works; meanwhile, a heat carrier in the data machine room enters a hot side flow channel of a first heat exchanger, the first cold carrier exchanges heat with the heat carrier, the temperature of the first cold carrier is increased, the temperature of the heat carrier is reduced, the first cold carrier after the temperature rise in the first heat exchanger is conveyed into a first cold storage tank, and the heat carrier after the temperature reduction in the first heat exchanger is conveyed into the hot side flow channel of a water chilling unit, namely a third heat exchange branch circuit works; the second cold carrier in the cooling tower is conveyed into a cold side flow channel of the water chilling unit, the second cold carrier exchanges heat with the cooled heat carrier, the temperature of the second cold carrier is increased, the temperature of the cooled heat carrier is further reduced, the further cooled heat carrier in the water chilling unit is conveyed into the data machine room, the cooling of the data machine room is realized, the warmed second cold carrier in the water chilling unit is conveyed into the cooling tower for re-cooling, and the first heat exchange branch works. Under the normal working state of the data center cooling system, the redundant cold energy of the first cold accumulation tank can be immediately consumed through the first heat exchanger, which is equivalent to the fact that the first cold accumulation tank supplies partial cold energy of the data center cooling system, so that the energy consumed by the cooling tower and the water chilling unit can be reduced, the waste of the redundant cold energy in the first cold accumulation tank is avoided, the running cost of the data center is reduced, and the economic benefit of the data center cooling system is improved.
2. According to the data center cooling system provided by the utility model, the cold quantity in the first cold accumulation tank can be flexibly and conveniently extracted through the first flow adjusting device, the flow between the first cold accumulation tank and the cold side flow channel of the first heat exchanger is adjusted through the monitoring information of the monitoring piece, and the redundant cold quantity can be involved in the operation of the data center cooling system besides the emergency cooling function of the first cold accumulation tank.
3. According to the data center cooling system provided by the utility model, cold is stored in the first cold storage tank through the first cold storage branch, so that the first cold storage tank is ensured to have emergency cold energy; and when the temperature is lower or the electricity is in valley, the cold energy is stored into the first cold storage tank through the first cold storage branch, so that the economic benefit of the data center cooling system is further improved.
4. According to the data center cooling system provided by the utility model, when the cooling capacity in the first cold accumulation tank is only enough for an emergency function, the cooling of the data machine room can be realized through the cooperation operation of the fourth heat exchange branch and the first heat exchange branch.
5. According to the data center cooling system provided by the utility model, the outlet end of the hot side flow passage of the second heat exchanger is divided into two paths, wherein one path is that the outlet end of the hot side flow passage of the second heat exchanger is communicated with the inlet of the first cold storage tank through the seventh flow regulating device and the sixth flow regulating device; the other path is that the outlet end of the hot side flow passage of the second heat exchanger is communicated with the inlet of the data machine room through a seventh flow regulating device; the inlet end of the hot side flow channel of the second heat exchanger is divided into two paths, wherein one path is communicated with the outlet of the data machine room, and the other path is communicated with the outlet end of the hot side flow channel of the first heat exchanger; the inlet end of the second heat exchanger cold side flow passage is communicated with the outlet of the cooling tower through an eighth flow regulating device, and the outlet end of the second heat exchanger cold side flow passage is communicated with the inlet of the cooling tower; when the ambient temperature is lower, the water chilling unit can be shut down, the water chilling unit is replaced by the second heat exchanger, and the second heat exchanger only has the heat exchange function as the water chilling unit has the heat exchange and refrigeration functions, so that the energy consumed by the refrigeration function of the water chilling unit is saved, and the economic benefit of the cooling system of the data center is further improved.
6. The utility model provides a data center cooling system, which comprises a first heat exchange branch, a fifth heat exchange branch and a second cold accumulation tank, wherein the first heat exchange branch comprises a cooling tower and a cold side flow channel of a water chilling unit which are sequentially connected in series; the fifth heat exchange branch comprises a second cold accumulation tank, a data machine room and a hot side flow channel of the water chilling unit which are sequentially connected in series; the first cold accumulation tank is communicated with the second cold accumulation tank through a fifth flow regulating device; the outlet end of the hot side runner of the water chilling unit is communicated with the inlet of the second cold accumulation tank; the outlet end of the cold side runner of the water chilling unit is communicated with the inlet of the cooling tower. When the first cold accumulation tank has extremely large redundant cold energy, a fifth flow regulating device is opened, and a low-temperature heat carrier in the first cold accumulation tank enters the second cold accumulation tank through the fifth flow regulating device; then the low-temperature heat carrier in the second cold accumulation tank is conveyed into the data machine room to realize the cooling of the data machine room, the low-temperature heat carrier is heated to form a heat carrier after passing through the data machine room, and the heat carrier in the data machine room is conveyed into a hot side flow passage of the water chilling unit, namely a fifth heat exchange branch circuit works; the second cold carrier in the cooling tower is conveyed into a cold side flow channel of the water chilling unit, the second cold carrier exchanges heat with the heat carrier, the temperature of the second cold carrier is increased, the temperature of the heat carrier is reduced to form a low-temperature heat carrier, the low-temperature heat carrier in the water chilling unit is conveyed into the second cold storage tank for next circulation, and the warmed second cold carrier in the water chilling unit is conveyed into the cooling tower for secondary cooling, namely, the first heat exchange branch works. Under the normal working state of the data center cooling system, the redundant cold energy of the first cold accumulation tank can be conveyed into the second cold accumulation tank, the second cold accumulation tank participates in the operation of the data center cooling system at any time, namely, the first cold accumulation tank supplies partial cold energy of the data center cooling system, the energy consumed by the cooling tower and the water chilling unit is reduced, the waste of the redundant cold energy in the first cold accumulation tank is avoided, the operation cost of the data center is reduced, and the economic benefit of the data center cooling system is improved.
7. According to the data center cooling system provided by the utility model, when the temperature is low or the electricity is in valley, the second cold accumulation branch is used for storing cold into the first cold accumulation tank, so that the economic benefit of the data center cooling system is further improved, and when the water chilling unit is stopped, the second cold accumulation tank can replace the cooling function of the water chilling unit, and the cooling of the data center is realized.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a data center cooling system provided in example 1 provided by the present utility model;
FIG. 2 is a schematic diagram of a cooling system for a data center provided in example 2 of the present utility model.
Reference numerals illustrate:
1. a cooling tower;
2. a water chiller;
3. a first cold accumulation tank;
4. a first heat exchanger;
5. A data machine room;
6. a second cold accumulation tank;
7. a second heat exchanger;
v1, a first flow regulating device; v2, a second flow regulating device; v3, a third flow rate adjusting device; v4, a fourth flow regulating device; v5, a fifth flow regulating device; v6, a sixth flow regulating device; v7, a seventh flow regulating device; v8, eighth flow regulating device.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment provides a data center cooling system, as shown in fig. 1, comprising a first heat exchange branch, a second heat exchange branch and a third heat exchange branch, wherein the first heat exchange branch comprises a cooling tower 1 and a cold side runner of a water chilling unit 2 which are sequentially connected in series; the second heat exchange branch comprises a first cold accumulation tank 3, a first flow regulating device V1 and a cold side flow passage of a first heat exchanger 4 which are sequentially connected in series; the third heat exchange branch comprises a data machine room 5, a hot side flow passage of the first heat exchanger 4 and a hot side flow passage of the water chilling unit 2 which are sequentially connected in series; the outlet end of the cold side flow passage of the water chilling unit 2 is communicated with the inlet of the cooling tower 1, and the outlet end of the cold side flow passage of the first heat exchanger 4 is communicated with the inlet of the first cold accumulation tank 3; the outlet end of the hot side runner of the water chilling unit 2 is communicated with the inlet of the data machine room 5.
In the data center cooling system provided by the embodiment, when the first cold accumulation tank 3 has extremely large redundant cold quantity, the first flow regulating device V1 is opened, and the first cold carrier in the first cold accumulation tank 3 enters the cold side flow channel of the first heat exchanger 4 through the first flow regulating device V1, namely the second heat exchange branch circuit works; meanwhile, a heat carrier in the data machine room 5 enters a hot side flow channel of the first heat exchanger 4, the first cold carrier exchanges heat with the heat carrier, the temperature of the first cold carrier is increased, the temperature of the heat carrier is reduced, the first cold carrier after the temperature increase in the first heat exchanger 4 is conveyed into the first cold storage tank 3, and the heat carrier after the temperature reduction in the first heat exchanger 4 is conveyed into the hot side flow channel of the water chilling unit 2, namely, a third heat exchange branch circuit works; the second cold carrier in the cooling tower 1 is conveyed into the cold side flow channel of the water chilling unit 2, the second cold carrier exchanges heat with the cooled heat carrier, the temperature of the second cold carrier is increased, the temperature of the cooled heat carrier is further reduced, the further cooled heat carrier in the water chilling unit 2 is conveyed into the data machine room 5, the data machine room 5 is cooled, the warmed second cold carrier in the water chilling unit 2 is conveyed into the cooling tower 1 for re-cooling, namely, the first heat exchange branch works. Under the normal working state of the data center cooling system, the redundant cold energy of the first cold accumulation tank can be immediately consumed through the first heat exchanger, which is equivalent to the fact that the first cold accumulation tank supplies partial cold energy of the data center cooling system, so that the energy consumed by the cooling tower and the water chilling unit can be reduced, the waste of the redundant cold energy in the first cold accumulation tank is avoided, the running cost of the data center is reduced, and the economic benefit of the data center cooling system is improved.
As shown in fig. 1, in the data center cooling system provided in this embodiment, the first cold storage tank 3 is made of a thermal insulation material, and the cooling tower 1 uses cooling water as a circulating coolant, and absorbs heat from the system and discharges the heat to the atmosphere, so as to reduce the temperature of the cooling water. A second flow regulating device V2 is also connected in series between the cooling tower 1 and the cold side flow passage of the water chilling unit 2, the second flow regulating device V2 is used for controlling the flow between the cooling tower 1 and the cold side flow passage of the water chilling unit 2, the first heat exchange branch comprises the cooling tower 1, the second flow regulating device V2 and the cold side flow passage of the water chilling unit 2 which are sequentially connected in series, and a second cold carrier in the cold side flow passage of the water chilling unit 2 exchanges heat and then is conveyed into the cooling tower 1 for cooling again so as to perform the next circulation; a third flow regulating device V3 is further connected in series between the data machine room 5 and the hot side flow passage of the first heat exchanger 4, the third flow regulating device V3 is used for controlling the flow between the data machine room 5 and the hot side flow passage of the first heat exchanger 4, a fourth flow regulating device V4 is further connected in series between the hot side flow passage of the first heat exchanger 4 and the hot side flow passage of the water chilling unit 2, the fourth flow regulating device V4 is used for controlling the flow between the hot side flow passage of the first heat exchanger 4 and the hot side flow passage of the water chilling unit 2, namely, the third heat exchange branch comprises a data machine room 5, the third flow regulating device V3, the hot side flow passage of the first heat exchanger 4, the fourth flow regulating device V4 and the hot side flow passage of the water chilling unit 2 which are sequentially connected in series, the heat carrier in the data machine room 5 enters the hot side flow passage of the first heat exchanger 4 through the third flow regulating device V3, the heat carrier cooled in the first heat exchanger 4 enters the hot side flow passage of the water chilling unit 2, the heat carrier cooled in the water chilling unit 2 is further conveyed into the hot side flow passage 5 of the machine room, and the data machine room 5 is cooled, and the data is cooled. The first flow regulator V1, the second flow regulator V2, the third flow regulator V3 and the fourth flow regulator V4 are all electromagnetic valves.
As shown in fig. 1, the data center cooling system provided in this embodiment further includes a monitoring member, where the monitoring member is a temperature sensor, and the monitoring member is adhered to the inner wall of the first cold storage tank 3; the first flow regulating device V1 can control the flow between the first cold accumulation tank 3 and the cold side flow channel of the first heat exchanger 4 according to the temperature monitored by the monitoring piece; when the temperature monitored by the monitoring piece is lower than the preset temperature, the first cold accumulation tank 3 is provided with redundant cold energy, the first flow regulating device V1, the second flow regulating device V2, the third flow regulating device V3 and the fourth flow regulating device V4 are opened, the first cold carrier in the first cold accumulation tank 3 enters the cold side flow channel of the first heat exchanger 4 through the first flow regulating device V1, meanwhile, the heat carrier in the data machine room 5 enters the hot side flow channel of the first heat exchanger 4 through the third flow regulating device V3, the first cold carrier exchanges heat with the heat carrier, the first cold carrier after the temperature is increased in the cold side flow channel of the first heat exchanger 4 enters the first cold accumulation tank 3, the heat carrier after the pre-cooling enters the hot side flow channel of the cold water machine set 2 through the fourth flow regulating device V4, the second cold carrier in the cooling tower 1 enters the cold side flow channel of the cold water machine set 2 at the moment, the second cold carrier exchanges heat with the cooled heat carrier after the second cold carrier in the cold water machine room 2 enters the machine room 1, and the cooled heat carrier after the temperature is cooled in the machine room 5, and the cooled heat carrier is cooled in the machine room 5 is cooled, and the cooled data is cooled by the cooled carrier is cooled in the machine room 5. The first cold carrier is chilled water, the second cold carrier is cooling water, and the heat carrier is chilled water, so that the first cold carrier, the second cold carrier and the heat carrier can also adopt other fluids with high heat conduction performance as alternative embodiments; the water chiller 2 is an air-cooled water chiller, and as an alternative embodiment, the water chiller 2 may be a water-cooled water chiller, and the water chiller 2 includes four main components: the water chilling unit 2 has refrigeration and heat exchange functions. The cold quantity in the first cold accumulation tank 3 can be flexibly and conveniently extracted through the first flow adjusting device V1, the flow between the first cold accumulation tank 3 and the cold side flow channel of the first heat exchanger 4 is adjusted through the monitoring information of the monitoring piece, the first cold accumulation tank 3 is ensured to have an emergency cooling function, and redundant cold quantity can be further involved in the operation of a cooling system of a data center besides the normal emergency function of the first cold accumulation tank 3.
As shown in fig. 1, the data center cooling system provided in this embodiment further includes an emergency branch, which includes a first cold storage tank 3, a fifth flow adjusting device V5, a fourth flow adjusting device V4, a hot side flow channel of the water chiller 2, and a data machine room 5, which are sequentially connected in series, where when the data center cooling system fails in a power failure or a part of the cooling system is in a problem, that is, when the cooling system cannot work normally, a first cold carrier in the first cold storage tank 3 is conveyed into the data machine room 5 after passing through the hot side flow channel of the fifth flow adjusting device V5, the fourth flow adjusting device V4, and the water chiller 2, so as to realize cooling of the data machine room 5, and avoid rapid temperature rise of the data machine room 5 due to lack of cooling.
As shown in fig. 1, the data center cooling system provided in this embodiment further includes a first cold storage branch, which includes a first cold storage tank 3, a fifth flow adjustment device V5, a fourth flow adjustment device V4, a hot side flow passage of the chiller 2, and a sixth flow adjustment device V6 that are sequentially connected in series, where the sixth flow adjustment device V6 is communicated with an inlet of the first cold storage tank 3; the first cold accumulation branch is used for accumulating cold in the first cold accumulation tank 3, so that the first cold accumulation tank 3 is ensured to have emergency cold energy; and when the temperature is lower or the electricity is in valley, the cold energy is stored into the first cold storage tank 3 through the first cold storage branch, so that the economic benefit of the data center cooling system is further improved.
As shown in fig. 1, the data center cooling system provided in this embodiment further includes a fourth heat exchange branch, which includes a data machine room 5, a fourth flow adjusting device V4, and a hot side flow channel of the water chiller 2, which are sequentially connected in series, when there is no redundant cold in the first cold storage tank 3, a heat carrier in the data machine room 5 enters the hot side flow channel of the water chiller 2 through the fourth flow adjusting device V4, the heat carrier in the data machine room 5 does not need to be precooled through the first heat exchanger 4, meanwhile, the first heat exchange branch works, the heat carrier exchanges heat with a second cold carrier, the heat carrier cools, the second cold carrier heats, and the cooled heat carrier in the water chiller 2 is conveyed into the data machine room 5, so as to form a circulation, thereby realizing cooling of the data machine room 5.
As shown in fig. 1, the data center cooling system provided in this embodiment further includes a second heat exchanger 7, where an outlet end of a hot side flow channel of the second heat exchanger 7 is divided into two paths, and one path is that the outlet end of the hot side flow channel of the second heat exchanger 7 is communicated with an inlet of the first cold storage tank 3 through a seventh flow adjusting device V7 and a sixth flow adjusting device V6; the other path is that the outlet end of the hot side flow passage of the second heat exchanger 7 is communicated with the inlet of the data machine room 5 through a seventh flow regulating device V7; the inlet end of the hot side flow channel of the second heat exchanger 7 is divided into two paths, wherein one path is communicated with the outlet of the data machine room 5, and the other path is communicated with the outlet end of the hot side flow channel of the first heat exchanger 4; the inlet end of the cold side flow passage of the second heat exchanger 7 is communicated with the outlet of the cooling tower 1 through an eighth flow regulating device V8, and the outlet end of the cold side flow passage of the second heat exchanger 7 is communicated with the inlet of the cooling tower 1. The first heat exchanger 4 and the second heat exchanger 7 are both plate heat exchangers, and as an alternative embodiment, the first heat exchanger 4 and the second heat exchanger 7 may also be floating head heat exchangers, tube sheet heat exchangers, etc. The fifth flow regulator V5, the sixth flow regulator V6, the seventh flow regulator V7, and the eighth flow regulator V8 are all solenoid valves. When the ambient temperature is low or valley electricity, the heat carrier in the data machine room 5 passes through the hot side flow passage of the second heat exchanger 7, meanwhile, the second cold carrier in the cooling tower 1 enters the cold side flow passage of the second heat exchanger 7 through the eighth flow regulating device V8, the second cold carrier exchanges heat with the heat carrier, the heat carrier cooled in the second heat exchanger 7 is conveyed into the first cold storage tank 3 through the seventh flow regulating device V7 and the sixth regulating device, the second cold carrier heated in the second heat exchanger 7 is conveyed back to the cooling tower 1 for cooling, and a large amount of cold energy can be stored in the first cold storage tank 3 after multiple circulation operation.
According to the data center cooling system provided by the embodiment, as shown in fig. 1, when the ambient temperature is low, the water chilling unit can be turned off, the water chilling unit is replaced by the second heat exchanger, and the water chilling unit has heat exchange and refrigeration functions, and the second heat exchanger only has the heat exchange function, so that the energy consumed by the refrigeration function of the water chilling unit is saved, and the economic benefit of the data center cooling system is further improved.
As shown in fig. 1, in the data center cooling system provided in this embodiment, the first heat exchanger 4 is disposed between the data machine room 5 and the water chiller 2 or the second heat exchanger 7, the installation position is smart, the original cooling system equipment is not required to be modified, the construction difficulty and the workload are reduced, the first heat exchanger is disposed at the position, the cooling capacity in the first cold storage tank 3 can be flexibly extracted, the interference to the data center cooling system is small, and the normal operation of other equipment is not affected.
When the ambient temperature is high and redundant cold energy is arranged in the first cold accumulation tank 3, the first flow regulating device V1, the second flow regulating device V2, the third flow regulating device V3 and the fourth flow regulating device V4 are opened, the rest flow regulating devices are closed, the first cold carrier in the first cold accumulation tank 3 is conveyed into the hot side flow channel of the first heat exchanger 4 through the first flow regulating device V1, meanwhile, the heat carrier in the data machine room 5 is conveyed into the cold side flow channel of the first heat exchanger 4 through the third flow regulating device V3, the heat carrier is in heat exchange with the first cold carrier, the temperature of the first cold carrier is increased, the temperature of the heat carrier is reduced, the heat carrier is subjected to preliminary precooling, the cooled heat carrier in the first heat exchanger 4 enters the hot side flow channel of the cold water machine set 2 through the fourth flow regulating device V4, the heated first cold carrier in the first heat exchanger 4 is conveyed into the first tank 3, at the moment, the second cold carrier in the cooling tower 1 is conveyed into the cold side flow channel of the first heat exchanger 2 through the second flow regulating device V3, the cooled heat carrier in the second machine room 5 is conveyed into the cold side flow channel of the cold water machine room 2 through the second flow regulating device V3, the cooled heat carrier is further cooled down, the cooled heat carrier is conveyed into the second heat carrier in the second machine room 5, and cooled down heat carrier is cooled down through the second heat carrier, and cooled in the machine room 5 is cooled down in the machine room, and cooled down heat carrier is cooled down in the machine room, and cooled down in the machine room is cooled by the heat carrier is cooled by the temperature and cooled by the heat carrier and further cooled in the machine room 2.
When the ambient temperature is high and the first cold accumulation tank 3 does not have redundant cold energy, the first heat exchange branch and the fourth heat exchange branch work simultaneously, so that the cooling of the data center is realized.
When the ambient temperature is low and the first cold accumulation tank 3 has redundant cold energy, the first flow regulating device V1 is opened, the third flow regulating device V3, the seventh flow regulating device V7 and the eighth flow regulating device V8 are closed, the first cold carrier in the first cold accumulation tank 3 is conveyed into the cold side flow channel of the first heat exchanger 4 after passing through the first flow regulating device V1, meanwhile, the heat carrier in the data machine room 5 is conveyed into the hot side flow channel of the first heat exchanger 4 after passing through the third flow regulating device V3, the heat carrier exchanges heat with the first cold carrier, the temperature of the first cold carrier is increased, the temperature of the heat carrier is reduced, the heat carrier is subjected to preliminary precooling, the cooled heat carrier in the first heat exchanger 4 is conveyed into the hot side flow channel of the second heat exchanger 7, at the moment, the second cold carrier in the cooling tower 1 is conveyed into the cold side flow channel of the second heat exchanger 7 after passing through the eighth flow regulating device V8, the cooled heat carrier is conveyed into the cold side flow channel of the second heat exchanger 7 after passing through the third flow regulating device V3, the cooled heat carrier is conveyed into the second heat carrier in the second heat exchanger 7 after passing through the second heat exchanger 5, and the cooled heat carrier is cooled down in the second heat exchanger 7, and the cooled heat carrier is cooled down in the machine room is cooled by the second heat carrier 5, and the cooled down temperature is further cooled by the heat carrier is cooled by the heat carrier 5 after being conveyed into the second heat carrier 5, and cooled in the heat carrier is cooled by the heat carrier after being cooled by the temperature circulating temperature.
When the ambient temperature is low and the first cold accumulation tank 3 does not have redundant cold energy, the heat carrier in the data machine room 5 is conveyed into the hot side runner of the second heat exchanger 7, the second cold carrier in the cooling tower 1 is conveyed into the cold side runner of the second heat exchanger 7 after passing through the eighth flow regulating device V8, the second cold carrier exchanges heat with the heat carrier, the second cold carrier heated in the second heat exchanger 7 is conveyed into the cooling tower 1 for cooling, the cooled heat carrier in the second heat exchanger 7 is conveyed into the data center after passing through the seventh flow regulating device V7, and the cooling of the data machine room 5 is realized after multiple cycles.
Example 2
The embodiment provides a data center cooling system, as shown in fig. 2, which comprises a first heat exchange branch, a fifth heat exchange branch and a second cold accumulation tank 6, wherein the first heat exchange branch comprises a cooling tower 1 and a cold side runner of a water chilling unit 2 which are sequentially connected in series; the fifth heat exchange branch comprises a second cold accumulation tank 6, a data machine room 5 and a hot side flow channel of the water chilling unit 2 which are sequentially connected in series; the first cold accumulation tank 3 is communicated with the second cold accumulation tank 6 through a fifth flow regulating device V5; the outlet end of the hot side runner of the water chilling unit 2 is communicated with the inlet of the second cold accumulation tank 6; the outlet end of the cold side runner of the water chilling unit 2 is communicated with the inlet of the cooling tower 1.
In the data center cooling system provided by the embodiment, when the first cold accumulation tank 3 has extremely large redundant cold energy, the fifth flow regulating device V5 is opened, and the low-temperature heat carrier in the first cold accumulation tank 3 enters the second cold accumulation tank 6 through the fifth flow regulating device V5; then the low-temperature heat carrier in the second cold accumulation tank 6 is conveyed into the data machine room 5 to realize the cooling of the data machine room 5, the low-temperature heat carrier is heated to form a heat carrier after passing through the data machine room 5, and the heat carrier in the data machine room 5 is conveyed into a hot side flow channel of the water chilling unit 2, namely a fifth heat exchange branch works; the second cold carrier in the cooling tower 1 is conveyed into a cold side flow channel of the water chilling unit 2, the second cold carrier exchanges heat with the heat carrier, the temperature of the second cold carrier is increased, the temperature of the heat carrier is reduced to form a low-temperature heat carrier, the low-temperature heat carrier in the water chilling unit 2 is conveyed into the second cold storage tank 6 for next circulation, and the warmed second cold carrier in the water chilling unit 2 is conveyed into the cooling tower 1 for secondary cooling, namely, the first heat exchange branch works. Under the normal working state of the data center cooling system, redundant cold energy of the first cold accumulation tank 3 can be conveyed into the second cold accumulation tank 6, the second cold accumulation tank 6 participates in the operation of the data center cooling system at any time, namely, the first cold accumulation tank 3 supplies partial cold energy of the data center cooling system, the energy consumed by the cooling tower 1 and the water chilling unit 2 is reduced, the waste of the redundant cold energy in the first cold accumulation tank 3 is avoided, the operation cost of the data center cooling system is reduced, and the economic benefit of the data center cooling system is improved.
As shown in fig. 2, in the data center cooling system provided in this embodiment, the second cold storage tank 6 is made of a heat insulation material, and the cooling tower 1 uses cooling water as a circulating coolant, so as to absorb heat from the system and discharge the heat to the atmosphere, so as to reduce the temperature of the cooling water; a second flow regulating device V2 is also connected in series between the cooling tower 1 and the cold side flow passage of the water chilling unit 2, and the second flow regulating device V2 is used for controlling the flow between the cooling tower 1 and the cold side flow passage of the water chilling unit 2; a fourth flow regulating device V4 is also connected in series between the data machine room 5 and the hot side flow passage of the water chilling unit 2, and the fourth flow regulating device V4 is used for regulating the flow between the hot side flow passage of the water chilling unit 2 and the data machine room 5; the monitoring piece is a temperature sensor and is adhered to the inner wall of the first cold accumulation tank 3, and the monitoring piece is used for monitoring the temperature in the first cold accumulation tank 3; when the temperature monitored by the monitoring piece is lower than the preset temperature, the first cold accumulation tank 3 is provided with redundant cold quantity, the second flow regulating device V2, the fourth flow regulating device V4 and the fifth flow regulating device V5 are opened, the low-temperature heat carrier in the first cold accumulation tank 3 enters the second cold accumulation tank 6 through the fifth flow regulating device V5, the low-temperature heat carrier in the second cold accumulation tank 6 enters the data machine room 5, the heated heat carrier in the data machine room 5 enters the hot side flow channel of the water chilling unit 2 through the fourth flow regulating device V4, meanwhile, the second cold carrier in the cooling tower 1 enters the cold side flow channel of the water chilling unit 2 through the second flow regulating device V2, the heated heat carrier exchanges heat with the second cold carrier, the low-temperature heat carrier in the water chilling unit 2 enters the second cold accumulation tank 6, and the heated second cold carrier returns back into the cooling tower 1.
As shown in fig. 2, the data center cooling system provided in this embodiment further includes a second cold storage branch, which includes a second cold storage tank 6, a data machine room 5, a fourth flow adjusting device V4, a hot side flow passage of the water chiller 2, a sixth flow adjusting device V6, and a first cold storage tank 3 that are sequentially connected in series; when the temperature is lower or the electricity is in valley, the second cold accumulation branch is used for storing cold energy into the first cold accumulation tank 3, so that the economic benefit of the data center cooling system is further improved, and when the water chilling unit 2 is stopped, the second cold accumulation tank 6 can replace the cooling function of the water chilling unit 2, so that the cooling of the data machine room 5 is realized.
As shown in fig. 2, in the data center cooling system provided in this embodiment, the outlet end of the hot side flow channel of the second heat exchanger 7 is divided into two paths, wherein one path is communicated with the inlet of the first cold storage tank 3 through a seventh flow adjusting device V7 and a sixth flow adjusting device V6; the other path is that the outlet end of the hot side flow passage of the second heat exchanger 7 is communicated with the second cold accumulation tank 6 through a seventh flow regulating device V7; the inlet end of the hot side runner of the second heat exchanger 7 is communicated with the data machine room 5; the inlet end of the cold side flow channel of the second heat exchanger 7 is communicated with the outlet of the cooling tower 1 through an eighth flow regulating device V8; the outlet end of the cold side flow channel of the second heat exchanger 7 is communicated with the inlet of the cooling tower 1. When the ambient temperature is low and valley electricity is generated, the low-temperature heat carrier in the second cold storage tank 6 is heated to form a heat carrier after passing through the data machine room 5, the heat carrier in the data machine room 5 is conveyed into a hot side runner of the second heat exchanger 7, meanwhile, the second cold carrier in the cooling tower 1 is conveyed into a cold runner of the second heat exchanger 7 after passing through the eighth flow regulating device V8, the second cold carrier exchanges heat with the heat carrier, the second cold carrier heated in the second heat exchanger 7 is conveyed into the cooling tower 1 for cooling, the heat carrier cooled in the second heat exchanger 7 is conveyed into the first cold storage tank 3 after passing through the seventh flow regulating device V7 and the sixth flow regulating device V6, and a large amount of cold can be stored in the first cold storage tank 3 after a plurality of cycles.
As shown in fig. 2, in the data center cooling system provided in this embodiment, the second cold storage tank 6 participates in the operation of the system at any time, so that the idle of the cooling capacity in the second cold storage tank 6 is avoided, and when the water chiller 2 cannot be started or is frequently started and stopped, the second cold storage tank 6 can directly cool the data machine room 5, so that the cooling function of the water chiller 2 is not needed, and the stability of the data center cooling system is improved.
When the ambient temperature is high and the first cold accumulation tank 3 has redundant cold energy, the fifth flow regulating device V5 is opened, part of low-temperature heat carrier in the first cold accumulation tank 3 is conveyed into the second cold accumulation tank 6 through the fifth flow regulating device V5, then the fifth flow regulating device V5 is closed, the second flow regulating device V2 and the fourth flow regulating device V4 are opened, the rest flow regulating devices are closed, the low-temperature heat carrier in the second cold accumulation tank 6 is conveyed into the data machine room 5 to be heated to form a heat carrier, the heat carrier in the data machine room 5 is conveyed into a hot side flow channel of the cold water machine set 2 through the fourth flow regulating device V4, the second cold carrier in the cooling tower 1 is conveyed into a cold side flow channel of the cold water machine set 2 through the second flow regulating device V2, the second cold carrier is in heat exchange with the heat carrier, the heat carrier is cooled, the second cold carrier is heated, the second cold carrier heated in the cold water machine set 2 is conveyed into the cooling tower 1 to be cooled, the heat carrier cooled down in the cold water machine set 2 is conveyed into the second cold accumulation tank 6, and the data machine room 5 is cooled for multiple times.
When the ambient temperature is low and the first cold accumulation tank 3 has redundant cold energy, the fifth flow regulating device V5 is opened, part of low-temperature heat carriers in the first cold accumulation tank 3 are conveyed into the second cold accumulation tank 6 through the fifth flow regulating device V5, then the fifth flow regulating device V5 is closed, the seventh flow regulating device V7 and the eighth flow regulating device V8 are opened, the rest flow regulating devices are closed, the low-temperature heat carriers in the second cold accumulation tank 6 are conveyed into the data machine room 5 to be heated to form heat carriers, the heat carriers in the data machine room 5 are conveyed into a hot side flow channel of the second heat exchanger 7, the second cold carriers in the cooling tower 1 are conveyed into a cold side flow channel of the second heat exchanger 7 through the eighth flow regulating device V8, the second cold carriers are subjected to heat exchange, the heat carriers are cooled, the second cold carriers heated in the second heat exchanger 7 are conveyed into the cooling tower 1, the cooled heat carriers cooled in the second heat exchangers 7 are conveyed into the second cold accumulation tank 6, and the cooling of the data center is realized through multiple circulation.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (11)
1. A data center cooling system, comprising:
the first heat exchange branch comprises a cooling tower (1) and a cold side runner of a water chilling unit (2) which are sequentially connected in series;
the second heat exchange branch comprises a first cold accumulation tank (3), a first flow regulating device (V1) and a cold side flow channel of the first heat exchanger (4) which are sequentially connected in series;
the third heat exchange branch comprises a data machine room (5), a hot side flow passage of the first heat exchanger (4) and a hot side flow passage of the water chilling unit (2) which are sequentially connected in series;
the outlet end of the cold side flow passage of the water chilling unit (2) is communicated with the inlet of the cooling tower (1);
the outlet end of the cold side runner of the first heat exchanger (4) is communicated with the inlet of the first cold accumulation tank (3);
and the outlet end of the hot side flow passage of the water chilling unit (2) is communicated with the inlet of the data machine room (5).
2. The data center cooling system of claim 1, wherein,
a second flow regulating device (V2) is also connected in series between the cooling tower (1) and the cold side flow passage of the water chilling unit (2);
a third flow regulating device (V3) is also connected in series between the data machine room (5) and the hot side flow channel of the first heat exchanger (4);
a fourth flow regulating device (V4) is further connected in series between the hot side flow passage of the first heat exchanger (4) and the hot side flow passage of the water chilling unit (2).
3. The data center cooling system of claim 2, further comprising:
the monitoring piece is positioned in the first cold accumulation tank (3) and is used for monitoring the temperature in the first cold accumulation tank (3);
the first flow regulating device (V1) controls the flow between the first cold accumulation tank (3) and the cold side flow channel of the first heat exchanger (4) according to the monitoring information of the monitoring piece.
4. A data center cooling system according to claim 2 or 3, further comprising:
the emergency branch comprises a first cold accumulation tank (3), a fifth flow regulating device (V5), a fourth flow regulating device (V4), a hot side flow passage of the water chilling unit (2) and a data machine room (5) which are sequentially connected in series.
5. The data center cooling system of claim 4, further comprising:
the first cold accumulation branch comprises a first cold accumulation tank (3), a fifth flow regulating device (V5), a fourth flow regulating device (V4), a hot side flow passage of the water chilling unit (2) and a sixth flow regulating device (V6) which are sequentially connected in series;
the sixth flow regulating device (V6) is communicated with the inlet of the first cold accumulation tank (3).
6. The data center cooling system of claim 5, further comprising:
and the fourth heat exchange branch comprises a data machine room (5), a fourth flow regulating device (V4) and a hot side flow passage of the water chilling unit (2) which are sequentially connected in series.
7. The data center cooling system of claim 6, further comprising:
the outlet end of the hot side flow passage of the second heat exchanger (7) is divided into two paths, wherein one path is that the outlet end of the hot side flow passage of the second heat exchanger (7) is communicated with the inlet of the first cold accumulation tank (3) through a seventh flow regulating device (V7) and a sixth flow regulating device (V6); the other path is that the outlet end of the hot side flow passage of the second heat exchanger (7) is communicated with the inlet of the data machine room (5) through the seventh flow regulating device (V7);
the inlet end of the hot side flow channel of the second heat exchanger (7) is divided into two paths, wherein one path is communicated with the outlet of the data machine room (5), and the other path is communicated with the outlet end of the hot side flow channel of the first heat exchanger (4);
the inlet end of the second heat exchanger (7) cold side runner is communicated with the outlet of the cooling tower (1) through an eighth flow regulating device (V8), and the outlet end of the second heat exchanger (7) cold side runner is communicated with the inlet of the cooling tower (1).
8. A data center cooling system, comprising:
the first heat exchange branch comprises a cooling tower (1) and a cold side runner of a water chilling unit (2) which are sequentially connected in series;
the fifth heat exchange branch comprises a second cold accumulation tank (6), a data machine room (5) and a hot side flow channel of the water chilling unit (2) which are sequentially connected in series;
the first cold accumulation tank (3) is communicated with the second cold accumulation tank (6) through a fifth flow regulating device (V5);
the outlet end of the cold side flow passage of the water chilling unit (2) is communicated with the inlet of the cooling tower (1);
and the outlet end of the hot side flow passage of the water chilling unit (2) is communicated with the inlet of the second cold accumulation tank (6).
9. The data center cooling system of claim 8, wherein,
a second flow regulating device (V2) is also connected in series between the cooling tower (1) and the cold side flow passage of the water chilling unit (2);
a fourth flow regulating device (V4) is also connected in series between the data machine room (5) and the hot side flow passage of the water chilling unit (2);
the monitoring piece is positioned in the first cold accumulation tank (3) and is used for monitoring the temperature in the first cold accumulation tank (3);
the fifth flow regulating device (V5) controls the flow between the first cold accumulation tank (3) and the second cold accumulation tank (6) according to the monitoring information of the monitoring piece.
10. The data center cooling system of claim 9, comprising:
the second cold accumulation branch comprises a second cold accumulation tank (6), a data machine room (5), a fourth flow regulating device (V4), a hot side flow passage of the water chilling unit (2), a sixth flow regulating device (V6) and a first cold accumulation tank (3) which are sequentially connected in series.
11. The data center cooling system of claim 10, wherein,
the outlet end of the hot side flow channel of the second heat exchanger (7) is divided into two paths, wherein one path is communicated with the inlet of the first cold accumulation tank (3) through a seventh flow regulating device (V7) and a sixth flow regulating device (V6); the other path is that the outlet end of the hot side flow passage of the second heat exchanger (7) is communicated with the second cold accumulation tank (6) through the seventh flow regulating device (V7);
the inlet end of the hot side runner of the second heat exchanger (7) is communicated with the data machine room (5);
the inlet end of the cold side flow channel of the second heat exchanger (7) is communicated with the outlet of the cooling tower (1) through an eighth flow regulating device (V8);
the outlet end of the cold side runner of the second heat exchanger (7) is communicated with the inlet of the cooling tower (1).
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