CN117355116A - Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof - Google Patents
Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof Download PDFInfo
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- CN117355116A CN117355116A CN202311534662.2A CN202311534662A CN117355116A CN 117355116 A CN117355116 A CN 117355116A CN 202311534662 A CN202311534662 A CN 202311534662A CN 117355116 A CN117355116 A CN 117355116A
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- 230000008859 change Effects 0.000 title claims abstract description 40
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000001816 cooling Methods 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000000110 cooling liquid Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 10
- 230000001965 increasing effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 238000005338 heat storage Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 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
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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
- H05K7/20718—Forced ventilation of a gaseous coolant
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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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- 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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Abstract
The invention discloses a multi-section runner cold plate phase-change heat dissipation system of a data center, which comprises a cold plate phase-change heat radiator, a heat storage device and a heat storage device, wherein the cold plate phase-change heat radiator is arranged in a server and is used for collecting heat generated in the server and transmitting the heat to working media in the cold plate phase-change heat radiator; the two ends of the phase-change heat exchange system are respectively connected with the cold plate phase-change radiator and the external circulation cooling system; the device is used for cooling gaseous working medium generated in the cold plate phase-change radiator into liquid working medium and providing the liquid working medium for the cold plate phase-change radiator; the external circulation cooling system is used for providing a cold source for the phase change heat exchange system; and the control unit is used for controlling the setting of the cooling device to the chilled water temperature in the external circulation cooling system. Compared with a conventional micro-channel cold plate, the multi-section flow channel structure is adopted in the cold plate phase-change radiator, so that the flow path of cooling liquid can be effectively prolonged, the residence time of the cooling liquid in the flow channel is prolonged, and the purposes of enhancing heat exchange efficiency and homogenizing temperature are achieved.
Description
Technical Field
The invention relates to the technical field of heat dissipation and cooling of data centers, in particular to a multi-section runner cold plate phase change heat dissipation system of a data center and a control method thereof.
Background
The data center is an important guarantee for the life of a service society, and as the data center is continuously developed to a high-computation and clustering direction, the heat flow density is continuously increased, and the traditional air cooling heat dissipation mode has high energy consumption and insufficient heat dissipation capacity; the emerging data center liquid cooling technology comprises immersion liquid cooling and cold plate type liquid cooling, wherein the immersion liquid cooling has strong heat dissipation capacity, but special non-conductive cooling liquid is needed, and special equipment cabinets are needed, so that the cost is high, the maintenance is difficult, and the large-scale popularization is difficult in a short period; compared with an immersed liquid cooling technology, the existing cold plate type liquid cooling has the advantages of low cost, convenient installation and the like, but the cold plate type liquid cooling generally adopts single-phase liquid circulation in a micro-channel cold plate, along with continuous improvement of the power of a server chip, the single-phase liquid cooling in the cold plate gradually meets the heat dissipation requirement of a heating chip, and the cold plate type phase change liquid cooling with higher heat transfer efficiency is needed, but the problems of serious gas-liquid mixing, high flow resistance, poor starting performance stability, dry burning risk of an evaporation section and the like exist in the micro-channel in the existing cold plate type phase change liquid cooling system, heat accumulation is caused, and thus local hot spot phenomenon occurs.
Based on the problems, the invention discloses a multi-section type runner cold plate phase-change heat dissipation system of a data center and a control method thereof, compared with a conventional micro-channel cold plate, the multi-section type runner cold plate can effectively prolong the flow path of cooling liquid and increase the residence time of the cooling liquid in a runner through the multi-section type runner structure design, so that the purposes of enhancing heat exchange efficiency and uniform temperature are achieved.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a multi-section runner cold plate phase-change heat dissipation system of a data center and a control method thereof.
The aim of the invention is achieved by the following technical scheme:
a multi-section runner cold plate phase change heat dissipation system of a data center comprises a cold plate phase change heat radiator, a phase change heat exchange system, an external circulation cooling system and a control unit;
the cold plate phase-change radiator is arranged in the server and is used for collecting heat generated in the server and transmitting the heat to working media in the cold plate phase-change radiator;
the two ends of the phase-change heat exchange system are respectively connected with the cold plate phase-change radiator and the external circulation cooling system; the device is used for cooling gaseous working medium generated in the cold plate phase-change radiator into liquid working medium and providing the liquid working medium for the cold plate phase-change radiator;
the external circulation cooling system is used for providing a cold source for the phase change heat exchange system;
and the control unit is used for controlling the setting of the cooling device to the chilled water temperature in the external circulation cooling system.
A control method of a multi-section runner cold plate phase change heat dissipation system of a data center comprises the following steps:
s1, controlling a cooling device to generate chilled water through a control unit, enabling the chilled water to flow into a heat exchanger through a water inlet pipe, and enabling the chilled water to flow back to the cooling device through a water return pipe to complete circulation;
s2, collecting system pressure by a pressure sensor, comparing the system pressure with the maximum pressure allowed by the phase-change heat exchange system, and controlling a cooling device to set the temperature of cooling water by a control unit according to the comparison value;
s3, calculating the water inlet temperature measured by the water inlet temperature sensor and the water outlet temperature measured by the water outlet temperature sensor, and comparing the obtained temperature difference with the allowable maximum water inlet and outlet temperature difference, and judging whether the water supply flow of the cooling system needs to be increased or decreased;
s4, defining the maximum allowable temperature of the air in the server, comparing the maximum allowable temperature with the temperature of the air in the server measured by the air sensor, and judging to increase and decrease the fan power according to the comparison value so as to decrease the water inlet temperature or increase the water inlet temperature.
One or more embodiments of the present invention may have the following advantages over the prior art:
1. the invention provides a new solution for the heat dissipation system of the data center, the phase-change radiator is attached to the main heating chip in the server, and the heat exchange efficiency is greatly improved through the gas-liquid conversion of the cooling working medium in the phase-change radiator; meanwhile, the heat generated by other elements in the server is cooled by adopting an air cooling mode of a fan combination, air cooling and contact cooling are integrated, and the integration level of the heat dissipation system is improved.
2. Compared with a conventional micro-channel cold plate, the multi-section flow channel cold plate can effectively prolong the flow path of the cooling liquid through the multi-section flow channel structural design, increase the residence time of the cooling liquid in the flow channel and achieve the purposes of enhancing the heat exchange efficiency and homogenizing temperature.
Drawings
FIG. 1 is a schematic diagram of a multi-section runner cold plate phase change heat dissipation system for a data center provided by the invention;
fig. 2 is a diagram of a cold plate phase change radiator according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of the internal cavity of a multi-stage flow channel cold plate according to embodiment 1 of the present invention;
fig. 4 is a diagram of a cold plate phase change radiator according to embodiment 2 of the present invention;
FIG. 5 is a flow chart of a control method of a multi-section flow channel cold plate phase change heat dissipation system of a data center;
fig. 6 is a specific flowchart of a control method of a multi-section runner cold plate phase change heat dissipation system of a data center.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following examples and the accompanying drawings.
Example 1
As shown in fig. 1, the multi-section runner cold plate phase-change heat dissipation system for the data center comprises a cold plate phase-change heat radiator 1, a phase-change heat exchange system 2, an external circulation cooling system 3 and a control unit 4, wherein the cold plate phase-change heat radiator 1 is installed inside a server 5 and is attached to a main heating chip 501 in the server, and the phase-change heat exchange system 2 is respectively connected with the cold plate phase-change heat exchanger 1 and the external circulation cooling system 3.
The cold plate phase-change radiator 1 is used for collecting heat generated by a main heating chip 501 in the server 5 and transmitting the heat to working media in the cold plate phase-change radiator 1, the phase-change heat exchange system 2 is used for cooling gaseous working media generated in the cold plate phase-change radiator 1 into liquid working media and circularly supplying the liquid working media to the cold plate phase-change radiator 1 to form a circulation, and the external circulation cooling system 3 is used for providing a cold source for the phase-change heat exchange system 2 and simultaneously servo a plurality of phase-change heat exchange systems 2.
The cold plate phase-change radiator 1 comprises a phase-change pool 101, a multi-section flow channel plate 102, a gas collecting plate 103 and a fan 104, wherein the phase-change pool 101 is attached to a main heating chip 501 in a server, heat conduction silicone grease is smeared between contact surfaces to reduce contact thermal resistance, the phase-change pool 101 and the gas collecting plate 103 are respectively positioned at the bottom and the top of the cold plate phase-change radiator 1, the multi-section flow channel plate 102 is positioned between the phase-change pool 101 and the gas collecting plate 103, and internal cavities of the phase-change pool 101, the multi-section flow channel plate 102 and the gas collecting plate 103 are mutually communicated, the fan 104 is arranged on the multi-section flow channel plate 102, so that hot air in the server 5 can be blown to the multi-section flow channel plate 102, and meanwhile, the effect of accelerating internal gasification working media can be achieved (as shown in fig. 1 and 2).
The phase-change heat exchange system 2 comprises a liquid pipe 201, a heat exchanger 202, an air pipe 203 and a pressure sensor 204, wherein two ends of the air pipe 203 are respectively communicated with the heat exchanger 202 and the phase-change tank 101, two ends of the liquid pipe 201 are respectively communicated with the heat exchanger 202 and the air collecting plate 103, the installation position of the air pipe 203 on the heat exchanger 202 is higher than that of the liquid pipe 201, and the pressure sensor 204 is arranged in the air pipe 203 and is used for collecting pressure data in the air pipe 203 and transmitting the measured data to the control unit 4; and the phase change heat exchange system 2 is filled with phase change working media such as R22, R410a and the like.
The external circulation cooling system 3 comprises a cooling device 301, a water return pipe 302, a water inlet pipe 303, a water return temperature sensor 304 and a water inlet temperature sensor 305, wherein the water return pipe 302 and the water inlet pipe 303 are connected with the cooling device 301 and the heat exchanger 202, the water return temperature sensor 304 and the water inlet temperature sensor 305 are respectively arranged on the water return pipe 302 and the water inlet pipe 303 and are respectively used for measuring the water return temperature and the water inlet temperature of the cooling system, and measured data are transmitted to the control unit 4. The cooling liquid filled in the external circulation cooling system 3 is non-phase-change liquid such as water, glycol solution and the like.
The control unit 4 is electrically connected to the pressure sensor 204, the cooling device 301, and the air temperature sensor 502 in the service room 5.
As shown in fig. 3, the inner cavity structure of the multi-stage flow channel plate 102 includes a flow guiding column 1021, a turbulence structure 1022, a flow channel 1023, a flow channel inlet 1024, and a flow channel outlet 1025; the flow channel inside the multi-stage flow channel plate 102 is divided into three sections by the flow guiding columns 1211, turbulence structures 1022 with different sizes are distributed between each section, the shape of the turbulence structures 1022 can be round, regular hexagon or other shapes, and the turbulence structures are distributed from sparse to dense along the flowing direction of the cooling liquid, so as to ensure the uniformity of flow distribution, and further improve the uniform temperature performance and the heat transfer capability. The runner inlet 1024 and the runner outlet 1025 are openings with the same width as the multi-stage runner plate 102, and are respectively connected with the phase change tank 101 and the gas collecting plate 103.
When the multi-section flow channel cold plate phase change system works, heat generated by a main heating chip 501 in a server 5 is transferred to a liquid working medium in the phase change tank 101 through contact with the phase change tank 101, the liquid working medium is subjected to phase change after absorbing the heat and is converted into a gas-liquid mixed state, and flows into an inner cavity of the multi-section flow channel plate 102, meanwhile, a fan 104 blows hot air generated by other heating elements except the main heating chip 501 in the server to the multi-section flow channel plate 102 for cooling and then is discharged, the heat in the hot air is transferred to working media in the multi-section flow channel plate 102, so that the working media in the gas-liquid mixed state are further converted into a gaseous working medium, sequentially flow through a gas collecting plate 103 and an air pipe 203 to a heat exchanger 202, and are condensed into the liquid working medium after cooling water in the heat exchanger 202, and flow back to the phase change tank 101 through a liquid pipe 201 to complete one-time circulation; meanwhile, the cooling liquid in the external circulation cooling system 3 exchanges heat with the phase-change working medium in the phase-change heat exchange system 2 through the inside of the heat exchanger 202 by the water inlet pipe 303, and then flows to the cooling device 301 through the water return pipe 302 to discharge the heat outdoors, so that the whole heat exchange process is completed.
Example 2
As shown in fig. 4, in comparison with embodiment 1, in another cold plate phase-change radiator structure of embodiment 2 of the present invention, the cold plate phase-change radiator 1 adopts a folded plate structure, and the phase-change tank 101 and the gas collecting plate 103 are formed by folding the folded plate, wherein the gas collecting plate 103 is at the upper end of the phase-change tank 101, and the inner cavity of the phase-change tank 101 adopts a multi-stage runner plate structure, and a fan 104 is installed at the rear end of the gas collecting plate 103 for blowing heat of other heating elements in the server 5 onto the gas collecting plate 103, and meanwhile, the function of accelerating gasification of internal working media can be achieved.
During operation, heat generated by the main heating chip 501 in the server 5 is transferred to the working medium in the phase-change pool 101 by contacting with the phase-change pool 101, the working medium absorbs heat and then boils into a gas-liquid mixed state, a multi-section flow channel structure in the working medium is formed into a gas-liquid mixed state, then the gas-liquid mixed state is further transformed into a gaseous working medium in the gas collecting plate 103, the gaseous working medium flows through the air pipe 203 to the heat exchanger 202 under the action of gravity, the heat is transferred to cooling water and then condensed into a liquid working medium, and the liquid working medium flows back to the phase-change pool 101 through the liquid pipe 201 to complete circulation. At the same time, the fan 104 blows the hot air generated by other heating elements except the main heating chip 501 in the server to the air collecting plate 103 for cooling and discharging.
As shown in fig. 5, this embodiment further provides a control method for a multi-section runner cold plate phase-change heat dissipation system of a data center, including:
s1, controlling a cooling device to generate chilled water through a control unit, enabling the chilled water to flow into a heat exchanger through a water inlet pipe, and enabling the chilled water to flow back to the cooling device through a water return pipe to complete circulation;
s2, collecting system pressure by a pressure sensor, comparing the system pressure with the maximum pressure allowed by the phase-change heat exchange system, and controlling a cooling device to set the temperature of cooling water by a control unit according to the comparison value;
s3, calculating the water inlet temperature measured by the water inlet temperature sensor and the water outlet temperature measured by the water outlet temperature sensor, and comparing the obtained temperature difference with the allowable maximum water inlet and outlet temperature difference, and judging whether the water supply flow of the cooling system needs to be increased or decreased;
s4, defining the maximum allowable temperature of the air in the server, comparing the maximum allowable temperature with the temperature of the air in the server measured by the air sensor, and judging to increase and decrease the fan power according to the comparison value so as to decrease the water inlet temperature or increase the water inlet temperature.
As shown in fig. 6, S2 specifically includes: and P is defined as the maximum allowable pressure of the phase-change heat exchange system, T1 is the chilled water temperature when the pressure of the phase-change heat exchange system is smaller than P, and T2 is the chilled water temperature of the system when the pressure of the phase-change heat exchange system is larger than P, wherein T1 is larger than T2. When the pressure sensor collects the system pressure P1> P, the control unit controls the cooling device 301 to react, the chilled water temperature is set to be T2, and when the pressure sensor collects the system pressure P1 less than or equal to P, the control unit controls the cooling device 301 to set the chilled water temperature to be T1.
The step S3 specifically includes: defining deltat 1 as the maximum inlet-outlet water temperature difference, defining deltat 2 as the inlet-outlet water temperature difference threshold when reducing the system flow, wherein deltat 1> deltat 2, the inlet water temperature measured by the inlet water temperature sensor 305 is Tin, the temperature measured by the return water temperature sensor 304 is Tout, defining tio=tout-Tin as the cooling system inlet-outlet water temperature difference, defining F1 as the cooling water flow when the system is in normal operation, F2 as the cooling water flow when the system is in high-power operation, increasing the cooling system water supply flow to F2 when Tio > deltat 1, and reducing the cooling system water supply flow to F1 when Tio < deltat 2.
The step S4 specifically includes: tmax is defined as the maximum allowable temperature of the server interior air and Tair is the server interior air temperature measured by the air temperature sensor 502. When Tair is more than or equal to Tmax, increasing the power of the fan 104 and reducing the inlet water temperature to T2; when Tair < Tmax, the fan 104 power is reduced to normal and the inlet water temperature is increased to T1.
Although the embodiments of the present invention are described above, the embodiments are only used for facilitating understanding of the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the appended claims.
Claims (11)
1. The multi-section runner cold plate phase-change heat dissipation system of the data center is characterized by comprising a cold plate phase-change heat radiator (1), a phase-change heat exchange system (2), an external circulation cooling system (3) and a control unit (4);
the cold plate phase-change radiator is arranged in the server and is used for collecting heat generated in the server and transmitting the heat to working media in the cold plate phase-change radiator;
the two ends of the phase-change heat exchange system are respectively connected with the cold plate phase-change radiator and the external circulation cooling system; the device is used for cooling gaseous working medium generated in the cold plate phase-change radiator into liquid working medium and providing the liquid working medium for the cold plate phase-change radiator;
the external circulation cooling system is used for providing a cold source for the phase change heat exchange system;
and the control unit is used for controlling the setting of the cooling device to the chilled water temperature in the external circulation cooling system.
2. The multi-section runner cold plate phase-change heat dissipation system of data center according to claim 1, wherein the cold plate phase-change heat sink (1) comprises a phase-change pool (101), a multi-section runner plate (102), a gas collecting plate (103) and a fan (104); the phase change pool (101) is positioned at the bottom of the cold plate phase change radiator, is attached to a heating chip (105) arranged in the server, and is coated with heat conduction silicone grease between contact surfaces to reduce contact thermal resistance; the multi-section flow channel plate (102) is positioned between the phase change pool (101) and the gas collecting plate (103); the gas collecting plate (103) is positioned at the top of the cold plate phase change radiator; the fan (104) is arranged on the multi-section runner plate;
the phase change pool (101), the multi-section runner plate (102) and the internal cavity of the air collecting plate (103) are mutually communicated.
3. The data center multi-section runner cold plate phase change heat dissipation system according to claim 1, wherein the phase change heat exchange system (2) comprises a liquid pipe (201), a heat exchanger (202), an air pipe (203) and a pressure sensor (204);
two ends of the liquid pipe (201) are respectively communicated with the heat exchanger (202) and the air collecting plate (103), and the installation position of the air pipe (203) positioned on the heat exchanger (202) is higher than that of the liquid pipe (201);
two ends of the air pipe (203) are respectively communicated with the heat exchanger (202) and the phase change pool (101);
the pressure sensor (204) is arranged in the air pipe (203) and is used for collecting pressure data in the air pipe (203) and transmitting the collected data to the control unit (4).
4. The multi-section runner cold plate phase change heat dissipation system of claim 3, wherein the external circulation cooling system (3) comprises a cooling device (301), a return pipe (302), a water inlet pipe (303), a return water temperature sensor (304) and a water inlet temperature sensor (305);
the water return pipe (302) and the water inlet pipe (303) are connected with the cooling device (301) and the heat exchanger (202);
the backwater temperature sensor (304) is arranged on the backwater pipe (302) and is used for measuring backwater temperature of the cooling system; the water inlet temperature sensor (305) is arranged on the water inlet pipe (303) and is used for measuring the water inlet temperature of the cooling system; and the backwater temperature and the water inlet temperature data are respectively transmitted to the control unit (4), and the control unit (4) is electrically connected with the pressure sensor (204), the cooling device (301) and the air temperature sensor (502) in the server (5).
5. The multi-section runner cold plate phase-change heat dissipation system of the data center according to claim 1, wherein the cold plate phase-change heat sink (1) adopts a folding plate structure, a phase-change pool (101) and a gas collecting plate (103) are formed by folding the folding plate, the gas collecting plate (103) is arranged at the upper end of the phase-change pool (101), a multi-section runner plate structure is adopted in an inner cavity of the phase-change pool (101), and a fan (104) is arranged at the rear end of the gas collecting plate (103) and used for blowing heat of heating elements in a server (5) onto the gas collecting plate (103).
6. The multi-section runner cold plate phase change heat dissipation system as defined in claim 1, wherein the inner cavity of the multi-section runner plate (102) comprises a flow guiding column (1021), a turbulence structure (1022), a runner (1023), a runner inlet (1024) and a runner outlet (1025); the flow guide column (1021) divides a flow channel in the multi-section flow channel plate (102) into three sections; the turbulence structures (1022) are distributed among each section of flow passage and are distributed from sparse to dense along the flowing direction of the cooling liquid; the runner inlet (1024) and the runner outlet (1025) are provided with openings which are equal in width to the multi-section runner plate (102), the runner inlet (1024) is connected with the phase change pool (101), and the runner outlet (1025) is connected with the gas collecting plate (103).
7. The multi-section runner cold plate phase change heat dissipation system of data center according to claim 6, wherein the turbulence structures between each section of runners inside the multi-section runner plate (102) are different in size and are arranged in a circular shape, a regular hexagonal shape or a square shape;
the external circulation cooling system (3) can serve a plurality of phase change heat exchange systems (2).
8. A control method for a multi-sectional runner cold plate phase change heat dissipation system of a data center using any of claims 1-7, the method comprising:
s1, controlling a cooling device to generate chilled water through a control unit, enabling the chilled water to flow into a heat exchanger through a water inlet pipe, and enabling the chilled water to flow back to the cooling device through a water return pipe to complete circulation;
s2, collecting system pressure by a pressure sensor, comparing the system pressure with the maximum pressure allowed by the phase-change heat exchange system, and controlling a cooling device to set the temperature of cooling water by a control unit according to the comparison value;
s3, collecting system pressure by a pressure sensor, comparing the system pressure with the maximum pressure allowed by the phase-change heat exchange system, and controlling a cooling device to set the temperature of cooling water by a control unit according to the comparison value;
s4, defining the maximum allowable temperature of the air in the server, comparing the maximum allowable temperature with the temperature of the air in the server measured by the air sensor, and judging to increase and decrease the fan power according to the comparison value so as to decrease the water inlet temperature or increase the water inlet temperature.
9. The control method of the multi-section runner cold plate phase change heat dissipation system of the data center according to claim 8, wherein S2 specifically comprises:
defining P as the maximum allowable pressure of the phase-change heat exchange system, T1 as the chilled water temperature when the pressure of the phase-change heat exchange system is smaller than P, and T2 as the chilled water temperature when the pressure of the phase-change heat exchange system is larger than P, wherein T1 is larger than T2; when the pressure sensor collects the system pressure P1> P, the control unit controls the cooling device to react, the temperature of the chilled water is set to be T2, and when the pressure sensor collects the system pressure P1 less than or equal to P, the control unit controls the cooling device to set the temperature of the chilled water to be T1.
10. The control method of the multi-section runner cold plate phase-change heat dissipation system of the data center according to claim 8, wherein the step S3 specifically comprises:
defining DeltaT 1 as the maximum inlet and outlet water temperature difference, defining DeltaT 2 as the inlet and outlet water temperature difference threshold value when the flow rate of the system is reduced, wherein DeltaT 1 is larger than DeltaT 2, the inlet water temperature measured by the inlet water temperature sensor is Tin, the temperature measured by the return water temperature sensor is Tout, tio=tout-Tin is defined as the inlet and outlet water temperature difference of the cooling system, F1 is defined as the cooling water flow rate when the system is in normal operation, F2 is the cooling water flow rate when the system is in high-power operation, the water supply flow rate of the cooling system is increased to F2 when Tio is smaller than DeltaT 2, and the water supply flow rate of the cooling system is reduced to F1 when Tio is smaller than DeltaT 2.
11. The control method of the multi-section runner cold plate phase-change heat dissipation system of the data center according to claim 8, wherein the step S4 specifically comprises:
defining Tmax as the maximum allowable temperature of the air in the server, and Tair as the temperature of the air in the server measured by an air temperature sensor; when Tair is more than or equal to Tmax, increasing the power of the fan and reducing the inlet water temperature to T2; when Tair < Tmax, the fan power is reduced to normal and the inlet water temperature is increased to T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311534662.2A CN117355116B (en) | 2023-11-17 | Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof |
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| CN202311534662.2A CN117355116B (en) | 2023-11-17 | Multi-section type runner cold plate phase change heat dissipation system of data center and control method thereof |
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