CN106852087B - Single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system - Google Patents
Single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system Download PDFInfo
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- CN106852087B CN106852087B CN201710184259.XA CN201710184259A CN106852087B CN 106852087 B CN106852087 B CN 106852087B CN 201710184259 A CN201710184259 A CN 201710184259A CN 106852087 B CN106852087 B CN 106852087B
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- H—ELECTRICITY
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20763—Liquid cooling without phase change
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- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
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- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
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Abstract
The patent relates to a single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system, which comprises a liquid cooling module, an air cooling device, a first three-way valve and a natural heat dissipation device, wherein the first three-way valve comprises a first interface, a second interface and a third interface, and the third interface is communicated with the natural heat dissipation device; the inlet of the air cooling device is communicated with the first interface, and the outlet of the air cooling device is communicated with the natural heat dissipation device; and the inlet of the liquid cooling module is communicated with the second interface, and the outlet of the liquid cooling module is communicated with the natural heat radiator. The natural cooling device is adopted for natural cooling, so that the running and maintenance cost of the compressor and other parts in mechanical refrigeration is reduced, the energy consumption is greatly reduced, and the energy is saved.
Description
Technical Field
The patent relates to the field of natural cooling of data centers, in particular to a single-stage parallel liquid-gas dual-channel natural cooling data center cooling system.
Background
In a common heat dissipation system of a data center server, a high-density heat source such as a server CPU (Central processing Unit) adopts a liquid cooling channel to dissipate heat, namely liquid fluid absorbs heat through isolation contact with a main heating chip of the server, 70% -80% of total heat productivity of the server is taken away, and the rest 20% -30% of heat of the server is taken away through an air cooling channel. Because the liquid cooling channel has high heat dissipation efficiency, the heat dissipation requirement can be met by adopting natural cooling, a compressor is not required to participate in preparing a cold source, the overall energy consumption is low, and the air cooling channel also has the compressor to participate in refrigeration, so the compressor energy of the air cooling channel becomes the main energy consumption equipment of the latest heat dissipation system.
In the new version GB 50174 data center design Specification, the server allows the air inlet temperature to be increased to 32 ℃, namely the increased air inlet temperature allowed by the server can meet the heat dissipation requirement of the server, meanwhile, the main heat productivity of the server is emitted through a high-efficiency liquid cooling channel, and only a small part of distributed heat productivity is left, so that the air cooling channel removes a compressor, and heat dissipation is possible by utilizing a natural cold source.
Disclosure of Invention
In order to overcome the defects of the prior art, the patent provides a single-stage parallel liquid-gas double-channel natural cooling data center heat dissipation system which can fully utilize natural cold sources to realize the natural cooling of the data center and save energy.
For the present patent, the above technical problems are solved as follows: a single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system comprises a liquid cooling module, an air cooling device, a first three-way valve and a natural heat dissipation device, wherein the first three-way valve comprises a first interface, a second interface and a third interface, the third interface is communicated with the natural heat dissipation device, an inlet of the air cooling device is communicated with the first interface, an outlet of the air cooling device is communicated with the natural heat dissipation device, an inlet of the liquid cooling module is communicated with the second interface, and an outlet of the liquid cooling module is communicated with the natural heat dissipation device.
The liquid cooling module is used for absorbing centralized heat of main heating elements in the server, and the air cooling device is used for absorbing distributed heat of other elements in the server. The liquid cooling module utilizes the characteristics of large specific heat capacity, fast convection heat exchange, large evaporation latent heat and the like of the liquid heat exchange medium, so that the natural cooling device can be combined to naturally cool the main heating element of the server, the heat dissipation requirement is met, and secondly, because 70% -80% of heat in the server is taken away by the liquid cooling module, the rest of distributed heat in the server is allowed to further improve the air supply temperature to 32 ℃, the air cooling device can be combined to naturally cool other heating elements in the server by the natural cooling device, and moreover, the first three-way valve can be used for adjusting and distributing the flow of working medium according to the heat dissipation proportion between the liquid cooling module and the air cooling device, so that the flexibility is good, and the stable operation of the system is ensured. In conclusion, the natural cold source is fully utilized to dissipate heat, so that the running and maintenance cost of the compressor and other parts in mechanical refrigeration is reduced, the energy consumption is greatly reduced, and the energy is saved.
The air cooling device comprises a liquid cooling module, a natural heat dissipation device, a liquid cooling device, a first temperature sensor, a second temperature sensor and a second three-way valve, wherein the first temperature sensor is arranged at an outlet of the air cooling device, the second temperature sensor is arranged at an outlet of the liquid cooling module, the second three-way valve comprises a fourth interface, a fifth interface and a sixth interface, the fourth interface is communicated with the natural heat dissipation device, the fifth interface is communicated with the third interface, and the outlet of the liquid cooling module and the outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through the sixth interface.
When the first temperature sensor detects that the temperature of the outlet of the air cooling device is higher than a set value, the first three-way valve should increase the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the air cooling device is increased, the heat exchange efficiency of the air cooling device is improved, the temperature of the outlet of the air cooling device is reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is ensured; when the second temperature sensor detects that the outlet temperature of the liquid cooling module is higher than a set value, the first three-way valve should reduce the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the liquid cooling module is increased, the heat dissipation efficiency is improved, the temperature of the outlet of the liquid cooling module is reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is ensured; when the first temperature sensor detects that the temperature of the outlet of the air cooling device and the second temperature sensor detect that the outlet temperature of the liquid cooling module is higher than a set value, more heat exchange media enter the natural heat dissipation device to dissipate heat by adjusting the flow of the fifth interface, so that the heat dissipation efficiency of the natural heat dissipation device is improved, the temperature of the outlet of the air cooling device and the outlet temperature of the liquid cooling module are both reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is ensured.
Further, the air cooling device also comprises a first temperature sensor arranged at the outlet of the air cooling device.
When the first temperature sensor detects that the temperature of the outlet of the air cooling device is higher than a set value, the first three-way valve should increase the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the air cooling device is increased, the heat exchange efficiency of the air cooling device is improved, the temperature of the outlet of the air cooling device is reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is ensured.
Further, the device also comprises a second temperature sensor arranged at the outlet of the liquid cooling module.
When the second temperature sensor detects that the outlet temperature of the liquid cooling module is higher than the set value, the first three-way valve should reduce the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the liquid cooling module is increased, the heat dissipation efficiency is improved, the temperature of the outlet of the liquid cooling module is reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is ensured.
The air cooling device comprises a liquid cooling module, an air cooling device, a first three-way valve, a second three-way valve, a third temperature sensor and a third temperature sensor, wherein the first three-way valve is arranged at an inlet of the air cooling device, the second three-way valve comprises a fourth interface, a fifth interface and a sixth interface, the fourth interface is communicated with the natural cooling device, the fifth interface is communicated with the third interface, and an outlet of the liquid cooling module and an outlet of the air cooling device are simultaneously communicated with the natural cooling device through the sixth interface.
When the third temperature sensor detects that the inlet temperature of the air cooling device is lower than a set value, the opening of the fifth interface is increased by the second three-way valve, so that the flow of heat exchange medium passing through the natural heat dissipation device is reduced, the heat exchange efficiency of the natural heat dissipation device is reduced, the temperature of the inlet of the air cooling device is increased to be higher than the set value, the energy consumption of the system is saved, meanwhile, the phenomenon of condensation caused by supercooling of the air cooling device is prevented, potential safety hazards such as circuit short circuit, mold breeding and material corrosion caused by condensation are avoided, and the safe and stable operation of the system is ensured.
The air cooling device comprises a liquid cooling module, a liquid cooling device, a first three-way valve, a second three-way valve, a third temperature sensor, a fourth temperature sensor and a third temperature sensor, wherein the first temperature sensor is arranged at an inlet of the liquid cooling module, the third temperature sensor is arranged at an outlet of the liquid cooling module, the outlet of the liquid cooling module is connected with the liquid cooling module, and the outlet of the liquid cooling module is connected with the liquid cooling module.
When the fourth temperature sensor detects that the inlet temperature of the liquid cooling module is lower than a set value, the opening of the fifth interface is increased by the second three-way valve, so that the flow of heat exchange medium passing through the natural heat radiator is reduced, the heat exchange efficiency of the natural heat radiator is reduced, the temperature of the inlet of the liquid cooling module is increased to be higher than the set value, the energy consumption of the system is saved, meanwhile, the phenomenon of condensation caused by supercooling of the liquid cooling module is prevented, potential safety hazards such as circuit short circuit, mold breeding and material corrosion caused by condensation are avoided, and the safe and stable operation of the system is ensured.
Further, the natural heat radiator also comprises a water pump arranged at the inlet or the outlet of the natural heat radiator.
When the first temperature sensor detects that the temperature of the outlet of the air cooling device and the second temperature sensor detect that the outlet temperature of the liquid cooling module is higher than a set value, the flow of a fifth interface is preferably regulated to enable more heat exchange media to enter the natural heat dissipation device for heat dissipation, and when the method cannot meet the heat dissipation requirement, the running frequency of a water pump can be increased to improve the heat dissipation efficiency of the natural heat dissipation device, so that the temperature of the outlet of the air cooling device and the outlet temperature of the liquid cooling module are both reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is further ensured; when the third temperature sensor detects that the inlet temperature of the air cooling device or the fourth temperature sensor detects that the inlet temperature of the liquid cooling module is lower than a set value, the operation frequency of the water pump is preferentially reduced to reduce the heat radiation efficiency of the natural heat radiation device, and when the method cannot meet the requirement of the temperature set value, the opening of the fifth interface of the second three-way valve can be increased to further reduce the flow of heat exchange medium passing through the natural heat radiation device, so that the temperature of the inlet of the liquid cooling module and the temperature of the inlet of the air cooling device are increased to be higher than the set value, the energy consumption of the system is reduced, the condensation phenomenon of the liquid cooling module and the air cooling device due to supercooling is prevented, the potential safety hazards such as circuit short circuit, mold breeding and material corrosion caused by the condensation are avoided, and the safe and stable operation of the system is further ensured.
Further, a fan is arranged on the natural heat dissipation device.
When the first temperature sensor detects that the temperature of the outlet of the air cooling device and the second temperature sensor detect that the outlet temperature of the liquid cooling module is higher than a set value, the flow of a fifth interface is preferably regulated to enable more heat exchange media to enter the natural heat dissipation device for heat dissipation, and when the method cannot meet the heat dissipation requirement, the running frequency of a fan can be increased to improve the heat dissipation efficiency of the natural heat dissipation device, so that the temperature of the outlet of the air cooling device and the outlet temperature of the liquid cooling module are both reduced below the set value, the heat dissipation requirement of a system is met, and the stable operation of the system is further ensured; when the third temperature sensor detects that the inlet temperature of the air cooling device or the fourth temperature sensor detects that the inlet temperature of the liquid cooling module is lower than a set value, the operation frequency of the water pump is preferentially reduced to reduce the heat radiation efficiency of the natural heat radiation device, and when the method cannot meet the requirement of the temperature set value, the operation frequency of the fan is reduced to reduce the heat radiation efficiency of the natural heat radiation device, so that the temperature of the inlet of the liquid cooling module and the temperature of the inlet of the air cooling device are increased to be higher than the set value, the energy consumption of the system is saved, the condensation phenomenon caused by supercooling of the liquid cooling module and the air cooling device is prevented, the potential safety hazards such as circuit short circuit, mold breeding and material corrosion caused by the condensation are avoided, and the safe and stable operation of the system is further ensured.
Further, the natural heat dissipation device is a cooling tower or a dry cooler.
Further, the air cooling device is a tail end of a fan wall air conditioner.
Compared with the prior art, the beneficial effect of this patent is:
1. the liquid cooling module and the air cooling device are naturally cooled through the natural heat dissipation device, so that energy consumption is greatly reduced.
2. Through detection mechanism: the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor detect the system state, and the regulating mechanism: the water pump, the fan, the first three-way valve and the second three-way valve are used for regulating and controlling the system operation, so that the system can meet the heat dissipation requirement and simultaneously avoid potential safety hazards such as circuit short circuit, mold breeding and material corrosion caused by supercooling condensation, and the stability is good.
Drawings
Fig. 1 is a system configuration diagram of the present patent.
Detailed Description
The heat dissipation system of the single-stage parallel liquid-gas dual-channel natural cooling data center shown in fig. 1 comprises a liquid cooling module 7, an air cooling device 8, a first three-way valve 4 and a natural heat dissipation device 1, wherein the first three-way valve 4 comprises a first interface a, a second interface b and a third interface c, and the third interface c is communicated with the natural heat dissipation device 1; the inlet of the air cooling device 8 is communicated with the first interface a, and the outlet of the air cooling device is communicated with the natural heat dissipation device 1; the inlet of the liquid cooling module 7 is communicated with the second interface b, and the outlet is communicated with the natural heat radiator 1.
The liquid cooling module 7 is used for absorbing centralized heat of main heating elements in the server, and the air cooling device 8 is used for absorbing distributed heat of other elements in the server. The liquid cooling module 7 utilizes the characteristics of large specific heat capacity, fast convection heat transfer, large evaporation latent heat and the like of the liquid heat exchange medium, so that the natural cooling device 1 can be combined to naturally cool the main heating element of the server, the heat dissipation requirement is met, and secondly, because 70% -80% of heat in the server is taken away by the liquid cooling module 7, the rest of distributed heat in the server is allowed to further improve the air supply temperature to 32 ℃, the air cooling device 8 can be combined to naturally cool other heating elements in the server by the natural cooling device 1, and moreover, the first three-way valve 4 can adjust and distribute the flow of working medium according to the heat dissipation proportion between the liquid cooling module 7 and the air cooling device 8, so that the flexibility is good, and the stable operation of the system is ensured. In conclusion, the natural cold source is fully utilized to dissipate heat, so that the running and maintenance cost of the compressor and other parts in mechanical refrigeration is reduced, the energy consumption is greatly reduced, and the energy is saved.
In the specific implementation process, the air cooling device 8 is a fan wall air conditioner terminal and comprises a coil 5 and a fan wall 19 arranged on the coil 5, and the natural heat radiator 1 is a cooling tower or a dry cooler.
The system also comprises a first temperature sensor 10 arranged at the outlet of the coil pipe 5, a second temperature sensor 11 arranged at the outlet of the liquid cooling module 7, a third temperature sensor 9 arranged at the inlet of the coil pipe 5, a fourth temperature sensor 12 arranged at the inlet of the liquid cooling module, a water pump 3 arranged at the outlet of the natural heat radiator 1, a fan (not shown in the figure) arranged on the natural heat radiator 1 and a second three-way valve 2, wherein the second three-way valve 2 comprises a fourth interface d, a fifth interface e and a sixth interface f, the fourth interface d is communicated with the natural heat radiator 1, and the fifth interface e is communicated with the third interface c; the outlet of the liquid cooling device 7 and the outlet of the coil pipe 5 are simultaneously communicated with the natural heat radiator 1 through a sixth interface f.
In the specific implementation process, the water pump 3 is provided with a first frequency converter 21, and the fan is provided with a second frequency converter 6.
The working principle of the single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system is as follows:
the first three-way valve 4 distributes heat exchange medium between the first interface a and the second interface b according to a default heat dissipation capacity proportion value between the liquid cooling module 7 and the coil 5, so as to meet the basic heat dissipation requirements of the liquid cooling module 7 and the coil 5.
1. When the first temperature sensor 10 detects that the temperature of the outlet of the coil 5 is higher than the set value, the first three-way valve 4 should increase the flow ratio between the first interface a and the second interface b, so as to increase the flow of the heat exchange medium passing through the coil 5 and improve the heat exchange efficiency of the coil 5, thereby reducing the temperature of the outlet of the coil 5 below the set value, meeting the heat dissipation requirement of the coil 5, and ensuring the stable operation of the system; when the second temperature sensor 11 detects that the outlet temperature of the liquid cooling module 7 is higher than the set value, the first three-way valve 4 should reduce the flow ratio between the first interface a and the second interface b, so as to increase the flow of the heat exchange medium passing through the liquid cooling module 7 and improve the heat dissipation efficiency, thereby reducing the temperature of the outlet of the liquid cooling module 7 below the set value, meeting the heat dissipation requirement of the system and ensuring the stable operation of the system; when the first temperature sensor 10 detects that the temperature of the outlet of the coil 5 and the second temperature sensor 11 detect that the outlet temperature of the liquid cooling module 7 is higher than a set value, the flow of the fifth interface e is preferentially regulated to enable more heat exchange media to enter the natural heat dissipation device 1 for heat dissipation, the heat dissipation efficiency of the natural heat dissipation device 1 is improved, when the fifth interface e is regulated to be minimum and cannot meet the heat dissipation requirement, the operating frequency of the fan can be increased through the second frequency converter 6 to improve the heat dissipation efficiency of the natural heat dissipation device 1, and when the second frequency converter 6 is regulated to be maximum and cannot meet the heat dissipation requirement, the operating frequency of the water pump 3 can be increased through the first frequency converter 21 to improve the heat dissipation efficiency of the natural heat dissipation device 1, so that the temperature of the outlet of the coil 5 and the outlet temperature of the liquid cooling module 7 are both reduced below the set value, and stable operation of the system is ensured.
2. When the third temperature sensor 9 detects that the inlet temperature of the coil 5 or the fourth temperature sensor 12 detects that the inlet temperature of the liquid cooling module 7 is lower than a set value, the operation frequency of the water pump 3 is preferentially reduced through the first frequency converter 21 to reduce the heat dissipation efficiency of the natural heat dissipation device 1, when the operation frequency of the water pump 3 is adjusted to be minimum and cannot meet the requirement of the temperature set value, the operation frequency of the fan can be reduced through the second frequency converter 6 to reduce the heat dissipation efficiency of the natural heat dissipation device 1, when the second frequency converter 6 is adjusted to be minimum and cannot meet the requirement of the temperature set value, the opening of the fifth interface e of the second three-way valve 2 can be increased to further reduce the flow of heat exchange medium passing through the natural heat dissipation device 1, so that the temperature of the inlet of the liquid cooling module 7 and the temperature of the inlet of the coil 5 are increased to be higher than the set value, the condensation phenomenon generated by the liquid cooling module 7 and the coil 5 is prevented while the system energy consumption is saved, and potential safety hazards such as short circuit, mold growth and material corrosion caused by condensation are avoided, and the safe and stable operation of the system is further ensured.
3. When the first temperature sensor 10 detects that the temperature of the outlet of the coil 5 and the second temperature sensor 11 detect that the outlet temperature of the liquid cooling module 7 is higher than the set value, and the third temperature sensor 9 detects that the inlet temperature of the coil 5 or the fourth temperature sensor 12 detects that the inlet temperature of the liquid cooling module 7 is lower than the set value, the solution adopted when the temperature of the outlet of the coil 5 detected by the first temperature sensor 10 and the outlet temperature of the liquid cooling module 7 detected by the second temperature sensor 11 are higher than the set value in the 1 st point is preferably executed, so that the heat dissipation requirements of the liquid cooling module 7 and the coil 5 are met, and the reliability is high.
Claims (8)
1. The heat dissipation system of the single-stage parallel liquid-gas double-channel natural cooling data center is characterized by comprising a liquid cooling module, an air cooling device, a first three-way valve and a natural heat dissipation device, wherein the first three-way valve comprises a first interface, a second interface and a third interface, and the third interface is communicated with the natural heat dissipation device; the inlet of the liquid cooling module is communicated with the second interface, and the outlet of the liquid cooling module is communicated with the natural heat radiator;
the first temperature sensor is arranged at the outlet of the air cooling device;
when the first temperature sensor detects that the temperature of the outlet of the air cooling device is higher than a set value, the first three-way valve should increase the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the air cooling device is increased, and the heat exchange efficiency of the air cooling device is improved;
the second temperature sensor is arranged at the outlet of the liquid cooling module;
when the second temperature sensor detects that the outlet temperature of the liquid cooling module is higher than a set value, the first three-way valve should reduce the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the liquid cooling module is increased, and the heat dissipation efficiency is improved.
2. The heat dissipation system of a single-stage parallel liquid-gas dual-channel natural cooling data center of claim 1, further comprising a second three-way valve, wherein the second three-way valve comprises a fourth interface, a fifth interface and a sixth interface, the fourth interface is communicated with a natural heat dissipation device, and the fifth interface is communicated with the third interface; the outlet of the liquid cooling module and the outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a sixth interface.
3. The heat dissipation system of the single-stage parallel liquid-gas dual-channel natural cooling data center according to claim 1, further comprising a second three-way valve and a third temperature sensor arranged at an inlet of an air cooling device, wherein the second three-way valve comprises a fourth interface, a fifth interface and a sixth interface, the fourth interface is communicated with the natural heat dissipation device, the fifth interface is communicated with the third interface, and an outlet of the liquid cooling module and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through the sixth interface.
4. The heat dissipation system of the single-stage parallel liquid-gas dual-channel natural cooling data center according to claim 1, further comprising a second three-way valve and a fourth temperature sensor arranged at an inlet of the liquid cooling module, wherein the second three-way valve comprises a fourth interface, a fifth interface and a sixth interface, the fourth interface is communicated with a natural heat dissipation device, the fifth interface is communicated with the third interface, and an outlet of the liquid cooling module and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through the sixth interface.
5. The system of claim 2, 3 or 4, further comprising a water pump disposed at an inlet or outlet of the natural cooling device.
6. A single-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system as recited in claim 2, 3 or 4, wherein said natural heat dissipation device is provided with a fan.
7. The heat dissipation system for a single-stage parallel liquid-gas dual-channel natural cooling data center according to any one of claims 1 to 4, wherein the natural heat dissipation device is a cooling tower or a dry cooler.
8. The heat dissipation system for a single-stage parallel liquid-gas dual-channel natural cooling data center according to any one of claims 1-4, wherein the air cooling device is a fan wall air conditioner terminal.
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| CN106852087A (en) | 2017-06-13 |
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