CN107072113B - Double-stage parallel liquid-gas double-channel natural cooling data center heat dissipation system - Google Patents

Double-stage parallel liquid-gas double-channel natural cooling data center heat dissipation system Download PDF

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CN107072113B
CN107072113B CN201710184757.4A CN201710184757A CN107072113B CN 107072113 B CN107072113 B CN 107072113B CN 201710184757 A CN201710184757 A CN 201710184757A CN 107072113 B CN107072113 B CN 107072113B
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heat dissipation
natural
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CN107072113A (en
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林湧双
张学伟
谢春辉
顾剑彬
陈华
陈前
叶向阳
梁洁平
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Guangdong Shenling Environmental Systems Co Ltd
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Guangdong Shenling Environmental Systems Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • 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
    • H05K7/20718—Forced ventilation of a gaseous coolant
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • 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
    • H05K7/20836—Thermal management, e.g. server temperature control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The patent relates to a two-stage parallel liquid-gas double-channel natural cooling data center heat dissipation system, which comprises a liquid cooling module, an air cooling device, a first three-way valve, an intermediate heat exchanger 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 an inlet at one side of the intermediate heat exchanger is communicated with the second interface, an outlet of the intermediate heat exchanger is communicated with the natural heat radiating device, and the other side of the intermediate heat exchanger is communicated with the liquid cooling module to form a circulation loop. 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

Double-stage parallel liquid-gas double-channel natural cooling data center heat dissipation system
Technical Field
The patent relates to the field of natural cooling of data centers, in particular to a two-stage parallel type liquid-gas double-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 two-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: the two-stage parallel type liquid-gas double-channel natural cooling data center heat dissipation system comprises a liquid cooling module, an air cooling device, a first three-way valve, an intermediate heat exchanger 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, and an outlet of the air cooling device is communicated with the natural heat dissipation device; and an inlet at one side of the intermediate heat exchanger is communicated with the second interface, an outlet of the intermediate heat exchanger is communicated with the natural heat radiating device, and the other side of the intermediate heat exchanger is communicated with the liquid cooling module to form a circulation loop.
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 a liquid heat exchange medium, so that the main heating element of the server can be naturally cooled through the intermediate heat exchanger in combination with a natural heat radiating device, the heat radiating requirement is met, and then, 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 used for naturally cooling other heating elements in the server in combination with the natural heat radiating device, the heat exchange loop between the liquid cooling module and the natural heat radiating device is divided into two stages through the arrangement of the intermediate heat exchanger, the heat exchange loop where the liquid cooling module is located is indirectly shortened, the pressure drop of the heat exchange medium in the heat exchange loop is reduced, the flow rate of the heat exchange medium is accelerated, the heat exchange efficiency is improved, and finally, the first three-way valve can be used for adjusting and distributing the working medium flow according to the heat radiating quantity proportion between the liquid cooling module and the air cooling device, 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 an air cooling device, a liquid cooling module, a first temperature sensor, a second temperature sensor and a second three-way valve, wherein the air cooling device is arranged at an air cooling device outlet, 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 communicated with the natural cooling device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural cooling 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 temperature of the outlet of the air cooling device and the temperature of the outlet of the liquid cooling module are detected to be higher than a set value by the second temperature sensor, at the moment, the flow ratio between the first interface and the second interface is reduced by the first three-way valve, so that the flow of a heat exchange medium passing through the intermediate heat exchanger is increased, the heat exchange efficiency of the liquid cooling module and the intermediate heat exchanger 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.
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 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 intermediate heat exchanger is increased, the heat exchange efficiency of the liquid cooling module and the intermediate heat exchanger 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.
Further, the air cooling device further comprises a second three-way valve and a third temperature sensor arranged at an inlet of the 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 radiation device, and the fifth interface is communicated with the third interface; and an outlet communicated with the natural heat dissipation device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a 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.
Further, the device also comprises a second three-way valve and a fourth temperature sensor arranged at the 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 the natural heat dissipation device, and the fifth interface is communicated with the third interface; and an outlet communicated with the natural heat dissipation device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a sixth interface.
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 method can not meet the heat dissipation requirement, the operating 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 temperature of the outlet of the liquid cooling module are both reduced below the set value, the heat dissipation requirement of a system is met, 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 inlet temperature of the liquid cooling module is lower than the set value, the operating frequency of the fan is preferentially reduced, the heat dissipation efficiency of the natural heat dissipation device is reduced, and when the method can not meet the requirement of the set value of the temperature, the opening of the fifth interface of the second three-way valve is increased, so that the temperature of the inlet of the liquid cooling module and the air cooling device is increased above the set value, the energy consumption of the system is saved, the cooling module is prevented from generating the cooling module, the hidden danger of the cooling module is further avoided, and the cooling circuit is further prevented from being corroded by the cooling module, and the hidden danger of the cooling system is further avoided, and the safe and the like 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 perform natural cooling 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 two-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system shown in fig. 1 comprises a liquid cooling module 7, an air cooling device 8, a first three-way valve 4, an intermediate heat exchanger 5 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 one side of the intermediate heat exchanger 5 is communicated with the second interface b, the outlet is communicated with the natural heat radiator 1, and the other side of the intermediate heat exchanger is communicated with the liquid cooling module 7 to form a circulation loop.
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 exchange, large evaporation latent heat and the like of a liquid heat exchange medium, so that the main heating element of the server can be naturally cooled through the intermediate heat exchanger 5 in combination with the natural heat radiating device 1, the heat radiating requirement is met, 70% -80% of heat in the server is taken away by the liquid cooling module 7, the rest of distributed heat in the server allows the air supply temperature to be further increased to 32 ℃, the air cooling device 8 can be naturally cooled in combination with the natural heat radiating device 1 for other heating elements in the server, the heat exchange loop between the liquid cooling module 7 and the natural heat radiating device 1 is divided into two stages by the arrangement of the intermediate heat exchanger 5, the pressure drop of the heat exchange medium in the heat exchange loop is indirectly shortened, the flow rate of the heat exchange medium is accelerated, the heat exchange efficiency is improved, and finally the first three-way valve 4 can be used for adjusting and distributing the working medium flow according to the heat radiating quantity proportion between the liquid cooling module 7 and the air cooling device 8, 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 23 and a fan wall 24 arranged on the coil 23, 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 23, 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 23, a fourth temperature sensor 12 arranged at the inlet of the liquid cooling module, a first water pump 3 arranged at the outlet of the natural cooling device 1, a second water pump 6 arranged at the inlet of the liquid cooling module, a fan (not shown in the figure) arranged on the natural cooling device 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 cooling device 1, and the fifth interface e is communicated with a third interface c; the outlet of the intermediate heat exchanger 5 which is communicated with the natural heat radiator 1 and the outlet of the coil 23 are simultaneously communicated with the natural heat radiator 1 through a sixth interface f.
In the specific implementation process, the first water pump 3 is provided with a first frequency converter 22, and the fan is provided with a second frequency converter 21.
The working principle of the two-stage parallel type 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 23, so as to meet the basic heat dissipation requirements of the liquid cooling module 7 and the coil 23.
1. When the first temperature sensor 10 detects that the temperature at the outlet of the coil 23 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 23 and improve the heat exchange efficiency of the coil 23, thereby reducing the temperature at the outlet of the coil 23 below the set value, meeting the heat dissipation requirement of the coil 23, 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 intermediate heat exchanger 5, and improve the heat exchange efficiency of the liquid cooling module 7 and the intermediate heat exchanger 5, so that the temperature of the outlet of the liquid cooling module 7 is reduced below the set value, the heat dissipation requirement of the system is met, and the stable operation of the system is ensured; when the first temperature sensor 10 detects that the temperature at the outlet of the coil 23 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 rate of the fifth interface e is preferentially adjusted 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 adjusted to be minimum and cannot meet the heat dissipation requirement, the operating frequency of the fan can be increased through the second frequency converter 21 to improve the heat dissipation efficiency of the natural heat dissipation device 1, and when the second frequency converter 21 is adjusted to be maximum and cannot meet the heat dissipation requirement, the operating frequency of the first water pump 3 can be increased through the first frequency converter 22 to improve the heat dissipation efficiency of the natural heat dissipation device 1, so that the temperature at the outlet of the coil 23 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 23 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 first water pump 3 is preferentially reduced through the first frequency converter 22 to reduce the heat dissipation efficiency of the natural heat dissipation device 1, when the operation frequency of the first 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 21 to reduce the heat dissipation efficiency of the natural heat dissipation device 1, when the operation frequency of the second frequency converter 21 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 23 are increased to be higher than the set value, the system energy consumption is saved, the condensation phenomenon generated by the liquid cooling module 7 and the coil 23 is prevented, and potential safety hazards such as circuit 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 23 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 23 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 23 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 23 are met, and the reliability is high.

Claims (8)

1. The two-stage parallel type liquid-gas double-channel natural cooling data center heat dissipation system is characterized by comprising a liquid cooling module, an air cooling device, a first three-way valve, an intermediate heat exchanger 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 one side of the intermediate heat exchanger is communicated with the second interface, the outlet is communicated with the natural heat radiator, and the other side of the intermediate heat exchanger is communicated with the liquid cooling module to form a circulation loop;
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 increases 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 reduces the flow ratio between the first interface and the second interface, so that the flow of a heat exchange medium passing through the intermediate heat exchanger is increased, and the heat exchange efficiency of the liquid cooling module and the intermediate heat exchanger is improved.
2. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system according to 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; and an outlet communicated with the natural heat dissipation device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a sixth interface.
3. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system 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, and the fifth interface is communicated with the third interface; and an outlet communicated with the natural heat dissipation device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a sixth interface.
4. The two-stage parallel liquid-gas dual-channel natural cooling data center heat dissipation system 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, and the fifth interface is communicated with the third interface; and an outlet communicated with the natural heat dissipation device in the intermediate heat exchanger and an outlet of the air cooling device are simultaneously communicated with the natural heat dissipation device through a sixth interface.
5. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system according to claim 1, 3 or 4, further comprising a water pump arranged at an inlet or an outlet of the natural heat dissipation device.
6. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system according to claim 1, 3 or 4, wherein a fan is arranged on the natural heat dissipation device.
7. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system according to any one of claims 1-4, wherein the natural heat dissipation device is a cooling tower or a dry cooler.
8. The two-stage parallel type liquid-gas dual-channel natural cooling data center heat dissipation system according to any one of claims 1-4, wherein the air cooling device is a fan wall air conditioner tail end.
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