CN110536591B - Evaporative phase change cooling server system and control method - Google Patents
Evaporative phase change cooling server system and control method Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000008859 change Effects 0.000 title claims abstract description 35
- 239000003507 refrigerant Substances 0.000 claims abstract description 315
- 239000007788 liquid Substances 0.000 claims abstract description 133
- 238000010438 heat treatment Methods 0.000 claims abstract description 67
- 238000012423 maintenance Methods 0.000 claims abstract description 41
- 239000002826 coolant Substances 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 238000009834 vaporization Methods 0.000 claims description 14
- 230000008016 vaporization Effects 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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- 239000007921 spray Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- H05K7/208—Liquid cooling with phase change
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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
- H05K7/20836—Thermal management, e.g. server temperature control
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- 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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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present disclosure relates to an evaporative phase change cooling server system and control method. Wherein, this system includes: the server cabinet tank body, the refrigerant external circulation device and the centralized management device; the cooling medium nozzle of the server cabinet tank body is connected with the cooling medium external circulation device and is used for spraying liquid cooling medium from the cooling medium nozzle to a key heating point of the server, the cooling medium is vaporized and absorbed, the vaporous cooling medium is forced to be discharged through the cooling coil pipe for liquefaction through the small indoor circulation fan of the server, the liquid cooling medium is collected through the liquid collecting tank, and the liquid cooling medium is discharged through the cooling medium external circulation module connected with the liquid collecting tank; the refrigerant external circulation device comprises a refrigerant circulation pump, a refrigerant storage tank and a refrigerant pipe, and is used for completing refrigerant circulation; and the centralized management device controls the refrigerant circulating pump and the circulating fan to control the evaporative phase-change cooling server. The server cooling system based on the evaporative phase change cooling server has the advantages of low arrangement cost, high compatibility, energy conservation and easiness in maintenance.
Description
Technical Field
The present disclosure relates to the field of refrigeration, and in particular, to an evaporative phase change cooling server system and a control method.
Background
With the rapid development of new generation information technology industries such as 5G, internet of things and cloud computing, the demand on data centers is larger and larger, the construction scale of the data centers is larger and larger, the integration level of equipment is higher and higher, the power density of a single cabinet is gradually increased, and the power consumption is larger and larger. At present, the power consumption of the China data center is continuously increased by more than 12% in eight years, the total power consumption in 2020 is expected to reach 2962 hundred million kilowatts, the quantity of the China data center is more than 40 ten thousand according to the expression in the national green data center test point working scheme, the annual power consumption exceeds 1.5% of the total social power consumption, and most of the data center PUEs are still generally higher, so that the data center PUEs are reduced, and the method has great significance for energy conservation and consumption reduction in China.
At present, the main stream data center mainly radiates heat to the servers in the machine cabinet through air cooling, the servers are cooled in a mechanical refrigeration mode, the problems of high energy consumption, high noise and the like always exist, the traditional air cooling radiating server always has a power upper limit, the traditional air cooling refrigeration mode cannot meet the machine room demand along with the increase of the heat density of the machine cabinet to more than 20KW, the liquid cooling servers and the radiating systems thereof are generated, the principle is that refrigerants are directly or indirectly contacted with the servers, the heat of the servers is taken away through heat exchange, the liquid cooling servers and the radiating systems thereof can solve the problem of the high-density servers of more than 20KW, the power consumption of the radiating air conditioner of the servers can be reduced to the level which cannot be achieved by the traditional air conditioning scheme, and the main stream data center is one of the best schemes for solving the high density and energy conservation and consumption reduction of the data center in China.
Two main research directions of the existing liquid cooling server heat dissipation system are a cold plate type liquid cooling server and an immersed liquid cooling server. The immersed liquid cooling server scheme is that the server is directly immersed by using a refrigerant, and heat is taken away by circulating the refrigerant; the scheme of the cold plate liquid cooling server is that the back plate patch is contacted with the key heat dissipation point of the server by utilizing the form of the back plate patch, and heat is circularly taken away by a mode of indirect contact of a refrigerant. Both of these developments are most efficient with submerged liquid cooled server solutions. However, this solution also has a great number of problems during the actual operation.
Most typically, the system utilizes a refrigerant immersed server, and the entire tank body needs to be fully filled with refrigerant in a flat-laid server tank body so as to completely immerse the server, so that the refrigerant is excessively used, the manufacturing cost is extremely high, and the total possession cost TCO is high in the whole life cycle process, so that the system has no commercial value at all. In addition, when in operation and maintenance, the system has high requirements on a sealing process, a large amount of evaporation and dissipation phenomena exist in the refrigerant, frequent operation is not suitable, and the operation cost is very high.
Accordingly, there is a need for one or more approaches to address the above-described problems.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
It is an object of the present disclosure to provide an evaporative phase change cooling server system and a control method, which overcome, at least in part, one or more of the problems due to the limitations and disadvantages of the related art.
According to one aspect of the present disclosure, there is provided an evaporative phase change cooling server system, comprising:
the server cabinet tank body, the refrigerant external circulation device and the centralized management device;
the server cabinet tank body comprises a server cell, a cooling coil and a liquid collecting tank, wherein the server cabinet tank body is divided into a plurality of server cells, and each server cell is used for installing a server; the server cell comprises a refrigerant nozzle, the refrigerant nozzle is connected with a refrigerant external circulation device and is used for spraying liquid refrigerant from the refrigerant nozzle to a key heating point of the server, the vaporous refrigerant is forced to be discharged through a cooling coil pipe for liquefaction through a circulating fan in the server cell after the refrigerant is vaporized and absorbs heat, and the liquid refrigerant is collected through a liquid collecting tank and is discharged through the refrigerant external circulation device connected with the liquid collecting tank;
the refrigerant external circulation device comprises a refrigerant circulation pump, a refrigerant liquid storage tank and a refrigerant pipe, wherein the refrigerant pipe is used for intensively storing liquid refrigerant collected by the liquid storage tank into the refrigerant liquid storage tank, pressurizing the liquid refrigerant in the refrigerant liquid storage tank through the refrigerant circulation pump and then spraying the liquid refrigerant out of the refrigerant nozzle again according to the control of the centralized management device, so as to complete refrigerant circulation;
and the centralized management device is respectively connected with the acquisition device and the refrigerant external circulation device, and is used for receiving the working state parameters of the servers acquired by the acquisition device, calculating the refrigeration requirement of key heating points of each server through a preset algorithm, and controlling the refrigerant circulation pump and the circulation fan to control the evaporative phase change cooling server.
In an exemplary embodiment of the disclosure, the server cell includes a terminal refrigerant tube and a refrigerant nozzle, the server is a server with a removed server casing, the refrigerant nozzle is aligned to a key heating point of the server, and is configured to directly spray a liquid refrigerant in the refrigerant tube to the key heating point of the server, and after the liquid refrigerant is sprayed from the refrigerant nozzle, the circulating fan is configured to forcibly discharge the gaseous refrigerant out of the server cell.
In an exemplary embodiment of the present disclosure, a circulating fan is installed below the server cell, and is configured to pump the vaporous refrigerant in the server cell out of the server cell, and to evacuate the vaporous refrigerant in the server cell during maintenance of the server, so that a negative pressure is formed in the server cell, thereby reducing refrigerant loss caused by the maintenance of the server.
In an exemplary embodiment of the present disclosure, the server cell further includes:
and the auxiliary heating unit is used for heating the server cell through the auxiliary heating unit when the gas refrigerant in the server cell is exhausted through the circulating fan during maintenance of the server, so that the liquid refrigerant in the server cell is completely vaporized.
In an exemplary embodiment of the disclosure, the server key heating points in the server cell include a CPU, a GPU and a memory of the server, the number of server key heating points is consistent with the number of refrigerant nozzles, and each refrigerant nozzle is aligned to a key heating point of one server.
In an exemplary embodiment of the disclosure, a server cell in the server cabinet can occupies 1U for placing a refrigerant pipe and a refrigerant nozzle; the server cell is provided with a push-pull mounting structure, and the push-pull mounting structure is used for realizing the sealing connection between the server and the server cell through push-pull mounting after the server shell is removed during the arrangement or maintenance of the server.
In an exemplary embodiment of the present disclosure, the refrigerant external circulation device further includes:
the refrigerant circulating pump is positioned in the liquid refrigerant circulating system and is used for pressurizing the liquid refrigerant in the refrigerant pipe;
the refrigerant liquid storage tank is connected with the refrigerant pipe and is used for collecting and discharging liquid refrigerant collected and discharged by the tank body of each server cabinet through the liquid collecting tank;
and the refrigerant pipe is used for connecting the liquid collecting tank, the refrigerant liquid storage tank and the refrigerant circulating pump of each server cabinet tank body.
In an exemplary embodiment of the disclosure, the number of the refrigerant circulating pumps is set according to the system refrigerant pressure requirement; the refrigerant liquid storage tank can be shared by a plurality of sets of evaporation phase change cooling server systems.
In an exemplary embodiment of the disclosure, when the centralized management device receives a server maintenance instruction, the centralized management device controls the circulating fan and the auxiliary heating unit to empty the cooling medium in the server cell during server maintenance by closing the cooling medium circulating pump corresponding to the server to be maintained.
In one aspect of the present disclosure, there is provided a control method of an evaporative phase change cooling server, including:
the method comprises the steps of collecting parameters, namely, monitoring and collecting the overall load parameters of a server through power supply input power of the server, and collecting the temperature parameters of key heating points of each server through a temperature sensor;
a demand calculation step, namely calculating the total cold demand according to the overall load parameters of the servers, and calculating the cold demand of each server key heating point according to the temperature parameters of each server key heating point;
and a cooling control step, wherein each refrigerant circulating pump and each circulating fan are respectively controlled according to the total cooling capacity requirement and the cooling capacity requirement of key heating points of each server, so that the refrigerant ejection quantity of the refrigerant nozzles of each server and the air quantity of the circulating fans are controlled, and further the evaporative phase-change cooling server is controlled.
In an exemplary embodiment of the present disclosure, the method further comprises:
and a maintenance control step, receiving a server maintenance instruction, controlling to stop the output of the gaseous refrigerant of the refrigerant nozzle of the server, increasing the air discharge quantity of the circulating fan to form negative pressure in the server cell, starting the auxiliary heating unit of the server to accelerate the vaporization of the liquid refrigerant in the server cell, reducing the refrigerant loss caused by the maintenance of the server, and completing the maintenance control of the server.
The evaporative phase change cooling server system of the present disclosure includes: the server cabinet tank body, the refrigerant external circulation device and the centralized management device; the cooling medium nozzle of the server cabinet tank body is connected with the cooling medium external circulation device and is used for spraying liquid cooling medium from the cooling medium nozzle to a key heating point of the server, the cooling medium is vaporized and absorbed, the vaporous cooling medium is forced to be discharged through the cooling coil pipe for liquefaction through the small indoor circulation fan of the server, the liquid cooling medium is collected through the liquid collecting tank, and the liquid cooling medium is discharged through the cooling medium external circulation module connected with the liquid collecting tank; the refrigerant external circulation device comprises a refrigerant circulation pump, a refrigerant storage tank and a refrigerant pipe, and is used for completing refrigerant circulation; and the centralized management device controls the refrigerant circulating pump and the circulating fan to control the evaporative phase-change cooling server. On one hand, by changing liquid refrigerant refrigeration into gaseous refrigerant refrigeration, the required refrigerant is greatly reduced, the running cost is saved, the arrangement cost of the system is reduced, and the universality is extremely strong; on the other hand, due to the application of the circulating fan and the auxiliary heating unit, the loss of the refrigerant during the maintenance of the server is greatly reduced, and the maintenance cost of the server is greatly reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 illustrates an evaporative phase change cooling server system block diagram according to an exemplary embodiment of the present disclosure;
FIG. 2 illustrates a system schematic diagram of an evaporative phase change cooling server system in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a schematic diagram of an evaporative phase change cooling server system in accordance with an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a one-belt schematic diagram of an evaporative phase change cooling server system in accordance with an exemplary embodiment of the present disclosure;
fig. 5 shows a control method flowchart of an evaporative phase change cooling server according to an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microcontroller devices.
In the present exemplary embodiment, there is first provided an evaporative phase change cooling server system; referring to fig. 1, the evaporative phase change cooling server system may include the following:
server rack jar 110, refrigerant external circulation device 120, centralized management device 130, wherein:
the server cabinet tank 110 includes a server cell, a cooling coil, and a liquid collecting tank, where the server cabinet tank body is divided into a plurality of server cells, and each server cell is used for installing a server; the server cell comprises a refrigerant nozzle, the refrigerant nozzle is connected with a refrigerant external circulation device and is used for spraying liquid refrigerant from the refrigerant nozzle to a key heating point of the server, the vaporous refrigerant is forced to be discharged through a cooling coil pipe for liquefaction through a circulating fan in the server cell after the refrigerant is vaporized and absorbs heat, and the liquid refrigerant is collected through a liquid collecting tank and is discharged through the refrigerant external circulation device connected with the liquid collecting tank;
the refrigerant external circulation device 120 comprises a refrigerant circulation pump, a refrigerant liquid storage tank and a refrigerant pipe, and is used for intensively storing the liquid refrigerant collected by the liquid storage tank into the refrigerant liquid storage tank, pressurizing the liquid refrigerant in the refrigerant liquid storage tank by the refrigerant circulation pump and then spraying the liquid refrigerant out of the refrigerant nozzle again according to the control of the centralized management device, so as to complete refrigerant circulation;
the centralized management device 130 is respectively connected with the acquisition device and the refrigerant external circulation device, and is used for receiving the working state parameters of the servers acquired by the acquisition device, calculating the refrigeration requirement of key heating points of each server through a preset algorithm, and controlling the refrigerant circulation pump and the circulation fan to control the evaporative phase change cooling server.
The evaporative phase change cooling server system of the present disclosure includes: the server cabinet tank body, the refrigerant external circulation device and the centralized management device; the cooling medium nozzle of the server cabinet tank body is connected with the cooling medium external circulation device and is used for spraying liquid cooling medium from the cooling medium nozzle to a key heating point of the server, the cooling medium is vaporized and absorbed, the vaporous cooling medium is forced to be discharged through the cooling coil pipe for liquefaction through the small indoor circulation fan of the server, the liquid cooling medium is collected through the liquid collecting tank, and the liquid cooling medium is discharged through the cooling medium external circulation module connected with the liquid collecting tank; the refrigerant external circulation device comprises a refrigerant circulation pump, a refrigerant storage tank and a refrigerant pipe, and is used for completing refrigerant circulation; and the centralized management device controls the refrigerant circulating pump and the circulating fan to control the evaporative phase-change cooling server. On one hand, by changing liquid refrigerant refrigeration into gaseous refrigerant refrigeration, the required refrigerant is greatly reduced, the running cost is saved, the arrangement cost of the system is reduced, and the universality is extremely strong; on the other hand, due to the application of the circulating fan and the auxiliary heating unit, the loss of the refrigerant during the maintenance of the server is greatly reduced, and the maintenance cost of the server is greatly reduced.
Next, the evaporative phase change cooling server system in the present exemplary embodiment will be further described. Referring to fig. 1, the evaporative phase change cooling server system 100 may include: the system comprises a server cabinet tank 110, a refrigerant external circulation device 120 and a centralized management device 130. Wherein:
a server cabinet tank 110, wherein the server cabinet tank comprises a server cell, a cooling coil and a liquid collecting tank, the server cabinet tank body is divided into a plurality of server cells, and each server cell is used for installing a server; the server cell comprises a refrigerant nozzle, the refrigerant nozzle is connected with a refrigerant external circulation device and is used for spraying liquid refrigerant from the refrigerant nozzle to a key heating point of the server, the vaporous refrigerant is forced to be discharged through a cooling coil pipe for liquefaction through a circulating fan in the server cell after the refrigerant is vaporized and absorbed, and the liquid refrigerant is collected through a liquid collecting tank and is discharged through the refrigerant external circulation device connected with the liquid collecting tank.
In the embodiment of the present example, the liquid state nozzle is aligned to the key heating point such as the CPU, GPU, and the memory of the server through the evaporation phase change manner, the liquid state refrigerant in the refrigerant pipe is ejected through the nozzle, when the liquid state refrigerant is ejected, on one hand, due to the pressure decrease, on the other hand, due to the high temperature near the key heating point of the server, the low temperature liquid state refrigerant will be quickly vaporized, the evaporation phase change process will absorb a large amount of heat, and further reduce the temperature of the server, the liquid state refrigerant splashed to the outside of the key heating point such as the CPU, GPU, and the memory during spraying, the heat generated by other devices in the server chamber is absorbed through natural evaporation, the vaporized refrigerant in the server chamber is pumped out of the server chamber through the circulating fan installed below the server chamber, the vaporized refrigerant hits the cold coil installed below the server chamber, the vapor state refrigerant is liquefied, a large amount of heat is released, the heat is carried away by the cold coil pipe, the liquefied refrigerant is collected through the liquid collecting tank, and the refrigerant is circulated through the refrigerant circulating pump, and the vaporization liquefaction process of the system refrigerant is realized. The refrigerant evaporation phase change and recondensing phase change process is accompanied by a large amount of heat transfer, and has higher efficiency than direct contact heat transfer.
In this exemplary embodiment, as shown in fig. 2, a schematic diagram of an evaporative phase-change cooling server system is shown, a server cabinet tank body is composed of a server cell, a cooling coil, a liquid collecting tank, a server cell auxiliary heating unit and the like, a main body space of the server cabinet tank body is divided into different server cells, a server is installed in the server cell (side-in side-out installation, side maintenance, sealing strips are arranged between the side of the server and a port of the server cell, sealing can be achieved after the side-in side-out installation and the port of the server cell are installed in a pushing-pulling manner), after a refrigerant is vaporized in the server cell, a vaporous refrigerant is forced to be discharged through the refrigerant coil by a circulating fan in the server cell, the vaporous refrigerant is liquefied by the liquid collecting tank, the refrigerant is circulated to the server cell by a refrigerant external circulation device, and the vaporization and liquefaction process is repeated.
In this example embodiment, the server cell includes a terminal refrigerant pipe and a refrigerant nozzle, where the server is a server with a removed server casing, the refrigerant nozzle is aligned to a key heating point of the server, and is configured to directly eject a liquid refrigerant in the refrigerant pipe to the key heating point of the server, and after the liquid refrigerant is ejected from the refrigerant nozzle, the circulating fan is configured to forcedly eject the gaseous refrigerant out of the server cell.
In the embodiment of the present example, the server cell is used as the phase-change cooling generator, and is composed of a refrigerant pipe and a nozzle, a server with a shell removed (the side of the server is installed and maintained), a circulating fan, an auxiliary heating unit of the server cell, and the like, the liquid refrigerant nozzle is aligned to the key heating point of the server, the liquid refrigerant in the refrigerant pipe is sprayed out through the nozzle, and when the liquid refrigerant is sprayed out, on one hand, the pressure is reduced, and on the other hand, the low-temperature liquid refrigerant is rapidly vaporized due to the contact with the high temperature near the key heating point of the server, so as to absorb a large amount of heat, thereby reducing the temperatures of the CPU, the GPU, the memory at fixed points, and further floating to the liquid refrigerant beyond the key heating point such as the CPU, the GPU, the memory, and the like during spraying, taking away the heat productivity of other devices in the server cell through natural vaporization, and then strongly discharging the vaporized refrigerant in the server cell out of the server cell through the circulating fan installed above the server cell. The cooling coil and the liquid collecting tank are used as a refrigerant recovery unit, the vaporized refrigerant forced by the circulating fan passes through the V-shaped cooling coil, the cooling coil liquefies the vaporous refrigerant, the liquid refrigerant is recovered through the liquid collecting tank below, the refrigerant is finally circulated through the refrigerant external circulation device, the refrigerant is circulated to the server cell for vaporization, and the vaporization and reliquefaction process is repeated.
In this exemplary embodiment, a circulating fan is installed below the server cell, and is configured to pump the vaporous refrigerant in the server cell out of the server cell, and when the server is maintained, evacuate the gaseous refrigerant in the server cell, so that a negative pressure is formed in the server cell, and refrigerant loss caused by server maintenance is reduced.
In an embodiment of the present example, the server cell further comprises:
and the auxiliary heating unit is used for heating the server cell through the auxiliary heating unit when the gas refrigerant in the server cell is exhausted through the circulating fan during maintenance of the server, so that the liquid refrigerant in the server cell is completely vaporized.
In the embodiment of the present example, the server key heating points in the server cell include a CPU, a GPU, and a memory of the server, the number of server key heating points is consistent with the number of refrigerant nozzles, and each refrigerant nozzle is aligned to a key heating point of one server.
In the embodiment of the example, the server cabinet is divided into different server cells, the servers are installed in the server cells, and the refrigerant in the server cells is exhausted by utilizing the forced exhaust action of the circulating fan installed above the server cells in the maintenance process of the servers; further, negative pressure is formed in the small chamber of the server by utilizing the action of the circulating fan, and outdoor air only enters the small chamber of the server due to the negative pressure action, so that the problem of evaporation and dissipation of the vaporous refrigerant in the small chamber of the server is avoided; furthermore, due to the negative pressure effect of the server cell, the auxiliary heating unit in the server cell is matched, so that the liquid refrigerant can be vaporized thoroughly and is pumped away more easily when the server is pumped out for maintenance, the refrigerant residue in the server is less, and the refrigerant residue taken away by the replacement of the server is less. The multiple measures can eliminate the dissipation problem in the refrigerant operation process, so that the refrigerant is not consumed in the operation and maintenance process, and the operation and maintenance cost is greatly reduced.
In the embodiment of the present example, the server cell in the server cabinet tank occupies 1U, and is used for placing a refrigerant pipe and a refrigerant nozzle; the server cell is provided with a push-pull mounting structure, and the push-pull mounting structure is used for realizing the sealing connection between the server and the server cell through push-pull mounting after the server shell is removed during the arrangement or maintenance of the server.
In the embodiment of the present example, as shown in fig. 3, in order to provide a system diagram of an evaporative phase-change cooling server, an inverted standard 52U server cabinet is installed in a tank body of the server cabinet, a main body space of the server cabinet is divided into server cells with different U positions according to needs, wherein 1U space is reserved as a refrigerant pipe and a nozzle position, other U positions are used as installation positions of a server body, the installed server can be installed by pushing the server cells through the sides of the server cells, the sides of the server are maintained, sealing strips are arranged between the sides of the server and the openings of the server cells, sealing can be achieved after the installation by pushing and pulling, and the server has no requirement of any customization type, and can be adapted to all servers in the market.
The refrigerant external circulation device 120 comprises a refrigerant circulation pump, a refrigerant liquid storage tank and a refrigerant pipe, and is used for intensively storing the liquid refrigerant collected by the liquid storage tank into the refrigerant liquid storage tank, pressurizing the liquid refrigerant in the refrigerant liquid storage tank by the refrigerant circulation pump and then spraying the liquid refrigerant out of the refrigerant nozzle again according to the control of the centralized management device, so as to complete refrigerant circulation.
In the embodiment of the present example, the refrigerant external circulation device further includes:
the refrigerant circulating pump is positioned in the liquid refrigerant circulating system and is used for pressurizing the liquid refrigerant in the refrigerant pipe;
the refrigerant liquid storage tank is connected with the refrigerant pipe and is used for collecting and discharging liquid refrigerant collected and discharged by the tank body of each server cabinet through the liquid collecting tank;
and the refrigerant pipe is used for connecting the liquid collecting tank, the refrigerant liquid storage tank and the refrigerant circulating pump of each server cabinet tank body.
In the embodiment of the present example, the number of the refrigerant circulation pumps is set according to the system refrigerant pressure requirement; fig. 4 shows a multi-band diagram of the evaporative phase-change cooling server system, and the refrigerant liquid storage tank can be shared by multiple sets of evaporative phase-change cooling server systems.
In the embodiment of the present example, the refrigerant external circulation device mainly comprises a refrigerant circulation pump, a refrigerant liquid storage tank, a refrigerant pipe, and the like, and the refrigerant circulation pump and the refrigerant liquid storage tank regulate and balance the pressure of the refrigerant pipe under the control of the centralized management device, control the refrigerant spraying amount, and accurately complete the circulation process from vaporization to liquefaction and vaporization of the refrigerant.
The centralized management device 130 is respectively connected with the acquisition device and the refrigerant external circulation device, and is used for receiving the working state parameters of the servers acquired by the acquisition device, calculating the refrigeration requirement of key heating points of each server through a preset algorithm, and controlling the refrigerant circulation pump and the circulation fan to control the evaporative phase change cooling server.
In the embodiment of the present example, the centralized management device is used as a control center of the system, and by collecting the working state of the server, the temperature rise of the CPU, the GPU and the memory of the key heating point of the server, the vaporization rate of the coolant in the server cell, the temperature of the server cell and other parameters, the coolant circulation pump, the air speed of the circulation fan, the auxiliary heating unit of the server cell and other parameters are dynamically adjusted, so as to realize accurate control in the operation and maintenance process of the server.
In the embodiment of the example, through centralized management device, gather server traffic data to carry out the analysis, adjust refrigerant pump, circulating fan, change the pressure in the cold pipe, and fan air supply volume, thereby adjust the circulation speed of refrigerant, realize the accurate regulation to refrigerant evaporation capacity, thereby it is more energy-conserving.
In this example embodiment, when the central management device receives a server maintenance instruction, the central management device controls the circulating fan and the auxiliary heating unit to realize the control of emptying the coolant in the server cell during the maintenance of the server by closing the coolant circulating pump corresponding to the server to be maintained.
In the embodiment of the example, the refrigerant pump and the circulating fan are regulated through the centralized management device, the pressure in the cold pipe and the air supply quantity of the fan are changed, so that the circulating speed of the refrigerant is regulated, the accurate regulation of the evaporation quantity of the refrigerant is realized, and the complete vaporization of the refrigerant is realized; further, the vaporization of the refrigerant in the server is further accelerated through the wind speed and the pressure formed by the circulating fan during circulation, so that the full vaporization of the liquid refrigerant is ensured; furthermore, the refrigerant liquid collecting tank is arranged below the service to ensure that the incompletely vaporized refrigerant naturally flows out of the server cell under the action of gravity, and to ensure that the liquid refrigerant still does not exist in the server cell under the extreme condition. The refrigerant in the small chamber of the server is completely in the form of vapor, and no refrigerant in the form of liquid exists, so that the consumption of the refrigerant can be reduced to several percent of the immersed liquid cooling scheme, and the primary investment cost of the system is greatly reduced.
The specific details of the device modules of each of the above-mentioned evaporative phase-change cooling server systems are described in detail in the corresponding evaporative phase-change cooling server systems, and thus are not described herein.
It should be noted that although several modules or units of the evaporative phase change cooling server system 100 are mentioned in the detailed description above, this division is not mandatory. Indeed, the features and functions of two or more modules or devices described above may be embodied in one module or device in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or device described above may be further divided into a plurality of modules or devices to be embodied.
Furthermore, in the present exemplary embodiment, a control method of an evaporative phase change cooling server is also provided. Referring to fig. 5, the control method includes:
step S510 of parameter collection, wherein the overall load parameters of the server are monitored and collected through the power supply input power of the server, and the temperature parameters of key heating points of each server are collected through a temperature sensor;
a demand calculation step S520, calculating a total cooling demand according to the overall load parameters of the servers, and calculating the cooling demand of each server key heating point according to the temperature parameters of each server key heating point;
and a cooling control step S530, wherein each refrigerant circulating pump and each circulating fan are respectively controlled according to the total cooling capacity requirement and the cooling capacity requirement of key heating points of each server, so that the refrigerant ejection quantity of the refrigerant nozzles of each server and the air quantity of the circulating fans are controlled, and further the evaporative phase change cooling server is controlled.
In an embodiment of the present example, the method further comprises:
and a maintenance control step, receiving a server maintenance instruction, controlling to stop the output of the gaseous refrigerant of the refrigerant nozzle of the server, increasing the air discharge quantity of the circulating fan to form negative pressure in the server cell, starting the auxiliary heating unit of the server to accelerate the vaporization of the liquid refrigerant in the server cell, reducing the refrigerant loss caused by the maintenance of the server, and completing the maintenance control of the server.
It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
Furthermore, the above-described drawings are only schematic illustrations of processes included in the method according to the exemplary embodiment of the present invention, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. An evaporative phase change cooling server system, the system comprising:
the server cabinet tank body, the refrigerant external circulation device and the centralized management device;
the server cabinet tank body comprises a server cell, a cooling coil and a liquid collecting tank, wherein the server cabinet tank body is divided into a plurality of server cells, and each server cell is used for installing a server; the server cell comprises a refrigerant nozzle, the refrigerant nozzle is connected with a refrigerant external circulation device and is used for spraying liquid refrigerant from the refrigerant nozzle to a key heating point of the server, the vaporous refrigerant is forced to be discharged through a cooling coil pipe for liquefaction through a circulating fan in the server cell after the refrigerant is vaporized and absorbs heat, and the liquid refrigerant is collected through a liquid collecting tank and is discharged through the refrigerant external circulation device connected with the liquid collecting tank; the server cell comprises a terminal refrigerant pipe and a refrigerant nozzle, the server is a server with a server shell removed, the refrigerant nozzle is aligned with a key heating point of the server and is used for directly spraying liquid refrigerant in the refrigerant pipe to the key heating point of the server, and the circulating fan is used for strongly discharging gaseous refrigerant out of the server cell after the liquid refrigerant is sprayed from the refrigerant nozzle; a circulating fan is arranged below the server cell and is used for pumping the vaporous refrigerant in the server cell out of the server cell and evacuating the vaporous refrigerant in the server cell during server maintenance, so that negative pressure is formed in the server cell, and the refrigerant loss caused by server maintenance is reduced; the server cell also comprises an auxiliary heating unit, and the auxiliary heating unit is used for heating the server cell through the auxiliary heating unit when the gaseous refrigerant in the server cell is exhausted through the circulating fan during maintenance of the server, so that the liquid refrigerant in the server cell is completely vaporized;
the refrigerant external circulation device comprises a refrigerant circulation pump, a refrigerant liquid storage tank and a refrigerant pipe, wherein the refrigerant pipe is used for intensively storing liquid refrigerant collected by the liquid storage tank into the refrigerant liquid storage tank, pressurizing the liquid refrigerant in the refrigerant liquid storage tank through the refrigerant circulation pump and then spraying the liquid refrigerant out of the refrigerant nozzle again according to the control of the centralized management device, so as to complete refrigerant circulation;
and the centralized management device is respectively connected with the acquisition device and the refrigerant external circulation device, and is used for receiving the working state parameters of the servers acquired by the acquisition device, calculating the refrigeration requirement of key heating points of each server through a preset algorithm, and controlling the refrigerant circulation pump and the circulation fan to control the evaporative phase change cooling server.
2. The system of claim 1, wherein the server key heating points in the server cell comprise a CPU, a GPU, and a memory of the server, the number of server key heating points is identical to the number of refrigerant nozzles, and each refrigerant nozzle is aligned with a key heating point of one server.
3. The system of claim 1, wherein the server cells in the server cabinet tank occupy 1U for placement of refrigerant tubes and refrigerant nozzles; the server cell is provided with a push-pull mounting structure, and the push-pull mounting structure is used for realizing the sealing connection between the server and the server cell through push-pull mounting after the server shell is removed during the arrangement or maintenance of the server.
4. The system of claim 1, wherein the refrigerant external circulation device further comprises:
the refrigerant circulating pump is positioned in the liquid refrigerant circulating system and is used for pressurizing the liquid refrigerant in the refrigerant pipe;
the refrigerant liquid storage tank is connected with the refrigerant pipe and is used for collecting and discharging liquid refrigerant collected and discharged by the tank body of each server cabinet through the liquid collecting tank;
and the refrigerant pipe is used for connecting the liquid collecting tank, the refrigerant liquid storage tank and the refrigerant circulating pump of each server cabinet tank body.
5. The system of claim 4, wherein the number of refrigerant circulation pumps is set according to system refrigerant pressure requirements; the refrigerant liquid storage tank can be shared by a plurality of sets of evaporation phase change cooling server systems.
6. The system of claim 1, wherein the centralized management device controls the circulating fan and the auxiliary heating unit to empty the cooling medium in the server cell during the maintenance of the server by closing the cooling medium circulating pump corresponding to the server to be maintained when receiving the maintenance command of the server.
7. A control method using the evaporative phase change cooling server system as claimed in any one of claims 1 to 6, characterized in that the method comprises:
the method comprises the steps of collecting parameters, namely, monitoring and collecting the overall load parameters of a server through power supply input power of the server, and collecting the temperature parameters of key heating points of each server through a temperature sensor;
a demand calculation step, namely calculating the total cold demand according to the overall load parameters of the servers, and calculating the cold demand of each server key heating point according to the temperature parameters of each server key heating point;
and a cooling control step, wherein each refrigerant circulating pump and each circulating fan are respectively controlled according to the total cooling capacity requirement and the cooling capacity requirement of key heating points of each server, so that the refrigerant ejection quantity of the refrigerant nozzles of each server and the air quantity of the circulating fans are controlled, and further the evaporative phase-change cooling server is controlled.
8. The control method according to claim 7, characterized in that the method further comprises:
and a maintenance control step, receiving a server maintenance instruction, controlling to stop the output of the gaseous refrigerant of the refrigerant nozzle of the server, increasing the air discharge quantity of the circulating fan to form negative pressure in the server cell, starting the auxiliary heating unit of the server to accelerate the vaporization of the liquid refrigerant in the server cell, reducing the refrigerant loss caused by the maintenance of the server, and completing the maintenance control of the server.
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| CN112099592B (en) * | 2020-07-21 | 2022-06-21 | 曙光数据基础设施创新技术(北京)股份有限公司 | Self-circulation immersion jet flow phase change liquid cooling heat dissipation device inside blade server shell |
| CN112099593B (en) * | 2020-07-21 | 2022-06-21 | 曙光数据基础设施创新技术(北京)股份有限公司 | Immersion liquid cooling heat dissipation system for high-heat-flux server |
| CN112099591B (en) * | 2020-07-21 | 2022-06-21 | 曙光数据基础设施创新技术(北京)股份有限公司 | Immersed jet flow phase change liquid cooling system for high heat flux density super-calculation server |
| CN112292004B (en) * | 2020-10-27 | 2021-12-07 | 株洲中车时代电气股份有限公司 | Pump-driven two-phase cooling system and working method thereof |
| CN114599201B (en) * | 2022-01-26 | 2022-10-25 | 华南理工大学 | Micro-spray phase change liquid cooling vapor chamber for server, heat dissipation operation system and control method |
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