CN109769376B - Liquid cooling system based on evaporative cooling technology - Google Patents
Liquid cooling system based on evaporative cooling technology Download PDFInfo
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- CN109769376B CN109769376B CN201910110329.6A CN201910110329A CN109769376B CN 109769376 B CN109769376 B CN 109769376B CN 201910110329 A CN201910110329 A CN 201910110329A CN 109769376 B CN109769376 B CN 109769376B
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Abstract
The invention discloses a liquid cooling system based on an evaporative cooling technology, which comprises a liquid cooling server unit, a plate heat exchanger and an evaporative cooling water chilling unit, wherein the liquid cooling server unit, the plate heat exchanger and the evaporative cooling water chilling unit are arranged in a machine room, two sides of the liquid cooling server unit are respectively connected with one end of a secondary water system water supply pipe and one end of a secondary water system water return pipe, the other ends of the secondary water system water supply pipe and the secondary water system water return pipe are both connected with the plate heat exchanger, and a secondary water system water pump is arranged on the secondary water system water. The liquid cooling system adopts the indirect cooling plate type liquid cooling server, the indirect cooling plate is attached above the server chip, the heat emitted by the chip is taken away through the water flow in the indirect cooling plate, the cooling efficiency is high, and the indirect cooling plate is easy to accept by the market; the evaporative cooling water chilling unit adopts an indirect-direct evaporative cooling mode, can prepare cold water with the temperature lower than the environmental wet bulb temperature, and is widely suitable for data centers with liquid cooling servers.
Description
Technical Field
The invention belongs to the technical field of air conditioner refrigeration, and particularly relates to a liquid cooling system based on an evaporative cooling technology.
Background
In recent years, the informatization development in China is mature day by day, and the data center industry rises rapidly. Along with the development of the super computer, the integration level and the calculation speed of the chip are continuously improved, the energy consumption is also continuously increased, and the heat dissipation problem is increasingly highlighted. Because the main cooling mode is air cooling at present, the traditional air cooling heat dissipation mode is a direct heat transfer mode, and the heat convection method and the forced air cooling method depending on single-phase fluid can only be used for the heat flow density not more than 10W/cm2For a heat flux density of more than 10W/cm2It appears to be ineffective. The traditional data center design pursues performance, and the new generation data center pursues energy efficiency (PUE), namely the energy utilization rate of the data center under the conditions of energy shortage and rapid energy cost increase. Therefore, the liquid cooling server with higher heat exchange efficiency is promoted in the data center industry, and the liquid cooling server will become the inevitable trend of future data center development.
The evaporative cooling technology is a novel cooling technology for regenerating energy by using dry air energy, is widely applied to data centers at present, and brings greater opportunity to the evaporative cooling technology due to the arrival of the liquid cooling era. The evaporative cooling water chilling unit can provide cold water lower than an environment wet ball for the liquid cooling server, a compressor and a complex refrigeration cycle of a traditional compression type water chilling unit are structurally abandoned, and energy dissipation components only comprise a water pump and a fan. The mode of combining the evaporative cooling and the liquid cooling server can efficiently cool the data center and save the operating cost of the air conditioning system. Accordingly, those skilled in the art provide a liquid cooling system based on evaporative cooling technology.
Disclosure of Invention
The invention aims to provide a liquid cooling system based on an evaporative cooling technology, which solves the problem of low energy utilization rate of a data center under the conditions of energy shortage and rapid increase of energy cost.
The technical scheme adopted by the invention is as follows: the utility model provides a liquid cooling system based on evaporative cooling technology, including arranging the inside liquid cooling server unit of computer lab in, plate heat exchanger and evaporative cooling water set, the one end of secondary water system delivery pipe and secondary water system wet return is connected respectively to the both sides of liquid cooling server unit, plate heat exchanger is all connected to the other end of secondary water system delivery pipe and secondary water system wet return, and be provided with secondary water system water pump on the secondary water system delivery pipe, plate heat exchanger inserts evaporative cooling water set through primary water system delivery pipe and primary water system wet return respectively, and be provided with primary water system water pump on the primary water system wet return.
The present invention is also characterized in that,
the liquid cooling server unit comprises an indirect cooling plate water inlet pipe, an indirect cooling plate and an indirect cooling plate water outlet pipe, wherein the indirect cooling plate is attached above the server chip, one side of the indirect cooling plate is provided with the indirect cooling plate water inlet pipe, the other side of the indirect cooling plate is provided with the indirect cooling plate water outlet pipe, and the indirect cooling plate water inlet pipe and the indirect cooling plate water outlet pipe are respectively connected with a secondary water system water supply pipe and a secondary water system water return pipe.
The top in the machine room is provided with a closed hot channel, the closed hot channel is communicated with a precision air conditioner arranged in the machine room through a precision air conditioner return air inlet, and a precision air conditioner cooler is arranged in the precision air conditioner.
The evaporative cooling water chilling unit is of a bilateral symmetry structure and comprises a unit shell, wherein a primary air inlet, a secondary air inlet, an air filter, a free cooling surface cooler, an indirect evaporative cooler and an evaporative cooling water chilling unit cooling tower are sequentially arranged on the left side and the right side in the unit shell from outside to inside, a direct evaporative cooling filler is arranged on the lower portion in the evaporative cooling water chilling unit cooling tower, a spray-exhaust is arranged above the direct evaporative cooling filler, a water baffle is arranged above the spray-exhaust, the spray-exhaust is connected with a primary water system return water pipe, an exhaust pipe is arranged on the upper portion of the evaporative cooling water chilling unit cooling tower, an exhaust outlet of the evaporative cooling water chilling unit tower section is formed in the top of the exhaust pipe, and an exhaust fan is arranged in the exhaust pipe.
The free cold surface air cooler in the evaporative cooling water chilling unit is connected with the precision air conditioner cooler through a free cold liquid supply pipe and a free cold liquid return pipe, and a free cold system water pump is arranged on the free cold liquid supply pipe.
The left side wall of the precision air conditioner is provided with a precision air conditioner air outlet, and a precision air conditioner air supply fan is arranged in the precision air conditioner at a position corresponding to the precision air conditioner air outlet.
The top of the indirect evaporative cooler is provided with a secondary air outlet of the indirect evaporative cooler.
The primary air inlet and the secondary air inlet are both arranged at the end part of the unit shell, and the primary air inlet is positioned at the upper side of the secondary air inlet.
The liquid cooling system has the advantages that:
1. the liquid cooling system adopts the indirect cooling plate type liquid cooling server, the indirect cooling plate is attached above the server chip, the heat emitted by the chip is taken away through the water flow in the indirect cooling plate, the cooling efficiency is high, and the indirect cooling plate is easy to accept by the market.
2. The evaporative cooling water chilling unit in the liquid cooling system can prepare cold water with the temperature lower than the environmental wet bulb temperature by adopting an indirect-direct evaporative cooling mode, and is widely applied to data centers with liquid cooling servers.
3. The water system in the liquid cooling system is divided into two parts, the water system on the machine room side is self-circulated to avoid loop blockage, the cooling medium is water, the cost is low, and the pollution to the environment is avoided.
4. According to the liquid cooling system, heat dissipation of a machine room in winter is converted into a traditional air cooling mode, and an evaporative cooling water chilling unit starts a glycol free cooling mode, so that the anti-freezing problem of the water system in winter is solved.
Drawings
FIG. 1 is a schematic structural diagram of a liquid cooling system based on evaporative cooling technology according to the present invention;
FIG. 2 is a schematic structural diagram of a cold plate connected between liquid cooling server units in a liquid cooling system based on evaporative cooling technology according to the present invention;
fig. 3 is a schematic structural diagram of an evaporative cooling chiller in a liquid cooling system based on an evaporative cooling technology according to the present invention.
In the figure: 1. an evaporative cooling water chilling unit; 2. a primary water system supply pipe; 3. a water return pipe of the primary water system; 4. a primary water system water pump; 5. a plate heat exchanger; 6. a secondary water system supply pipe; 7. a secondary water system water pump; 8. a return pipe of the secondary water system; 9. a precision air conditioner air supply fan; 10. a free cold liquid return pipe; 11. a free cold feed tube; 12. a free cooling system water pump; 13. a precision air conditioning cooler; 14. a precision air conditioner return air inlet; 15. closing the hot aisle; 16. a liquid-cooled server unit; 17. an indirect cold plate water inlet pipe; 18. an indirect cooling plate; 19. an indirect cooling plate water outlet pipe; 20. a server chip; 21. an indirect evaporative cooler; 22. an air filter; 23. a secondary air inlet; 24. a primary air inlet; 25. a free cooling surface cooler; 26. a secondary air outlet of the indirect evaporative cooler; 27. directly evaporating and cooling the filler; 28. spraying and discharging; 29. an air outlet of the tower section of the evaporative cooling water chilling unit; 30. a water baffle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a liquid cooling system based on an evaporative cooling technology, which comprises a liquid cooling server unit 16 arranged in a machine room as shown in figure 1, wherein the liquid cooling server unit 16 comprises an indirect cooling plate water inlet pipe 17, an indirect cooling plate 18 and an indirect cooling plate water outlet pipe 19 as shown in figure 2, the indirect cooling plate 18 is attached above a server chip 20, one side of the indirect cooling plate 18 is provided with the indirect cooling plate water inlet pipe 17, the other side of the indirect cooling plate is provided with the indirect cooling plate water outlet pipe 19, the indirect cooling plate water inlet pipe 17 and the indirect cooling plate water outlet pipe 19 are respectively connected with a secondary water system water supply pipe 6 and a secondary water system water return pipe 8, the indirect cooling plate 18 is a copper cooling plate, the indirect cooling plate water inlet pipe 17 is connected to the lower end of the indirect cooling plate 18, and the indirect cooling plate water outlet pipe;
a secondary water system water supply pipe 6 and a secondary water system water return pipe 8 are both connected with the plate heat exchanger 5, and a secondary water system water pump 7 is arranged on the secondary water system water supply pipe 6;
a closed hot channel 15 is arranged at the top in the machine room, the closed hot channel 15 is connected with a precision air conditioner arranged in the machine room through a precision air conditioner air return inlet 14, a precision air conditioner cooler 13 is arranged in the precision air conditioner, a precision air conditioner air outlet is formed in the left side wall in the precision air conditioner, and a precision air conditioner air supply fan 9 is arranged in the precision air conditioner at a position corresponding to the precision air conditioner air outlet;
the plate heat exchanger 5 is connected with the evaporative cooling water chilling unit 1 through a primary water system water supply pipe 2 and a primary water system water return pipe 3, and a primary water system water pump 4 is arranged on the primary water system water return pipe 3;
as shown in fig. 3, the evaporative cooling water chiller 1 has a bilateral symmetry structure, and comprises a chiller housing, wherein a primary air inlet 24, a secondary air inlet 23, an air filter 22, a free cooling surface air cooler 25, an indirect evaporative cooler 21 and an evaporative cooling water chiller cooling tower are sequentially arranged on the left side and the right side of the chiller housing from outside to inside, the primary air inlet 24 and the secondary air inlet 23 are both arranged on the end of the chiller housing, the primary air inlet 24 is positioned on the upper side of the secondary air inlet 23, the top of the indirect evaporative cooler 21 is provided with an indirect evaporative cooler secondary air outlet 26, the evaporative cooling water chiller cooling tower is arranged in the middle of the chiller housing, the lower part in the evaporative cooling water chiller cooling tower is provided with a direct evaporative cooling filler 27, a spray row 28 is arranged above the direct evaporative cooling filler 27, and a plurality of water spraying devices are arranged on the spray row 28, a water baffle 30 is arranged above the spray row 28, the spray row 28 is connected with a return water pipe 3 of a primary water system, an exhaust pipe is arranged at the upper part of a cooling tower of the evaporative cooling water chiller, an exhaust outlet 29 at the tower section of the evaporative cooling water chiller is arranged at the top of the exhaust pipe, and an exhaust fan is arranged in the exhaust pipe;
the free cold surface air cooler 25 in the evaporative cooling water chilling unit 1 is connected with the precision air conditioning cooler 13 through a free cold liquid supply pipe 11 and a free cold liquid return pipe 10, a free cold system water pump 12 is arranged on the free cold liquid supply pipe 11, and the cooling liquid in the free cold surface air cooler 25 is glycol solution.
The operation modes of the liquid cooling system are divided into a liquid cooling mode and a free cooling mode, and the operation modes are as follows:
liquid cooling mode:
in spring, summer and autumn, when the outdoor temperature is above zero, the water pump 4 of the primary water system is started to pump cold water prepared by the evaporative cooling water chilling unit 1 into the plate heat exchanger 5 to exchange heat with return water of the liquid cooling server unit 16 in the secondary water system, so that the temperature of the water in the secondary water system is reduced; and returning the return water with the increased temperature in the primary water system to the evaporative cooling water chilling unit 1 through a water supply pipe 2 of the primary water system for cooling.
The secondary water system water pump 7 is started, the secondary water after being cooled is conveyed to the liquid cooling server unit 16 through the secondary water system water supply pipe 6, cold water is sent into the interior of the indirect cooling plate 18 from the low end through the indirect cooling plate water inlet pipe 17, after the heat of the server chip 20 is absorbed, the water flows into the indirect cooling plate water outlet pipe 19 from the upper end and returns to the secondary water system water return pipe 8, and the process is repeated.
The working process of the evaporative cooling water chilling unit 1 is as follows:
outdoor fresh air enters the unit shell through a primary air inlet 24 and a secondary air inlet 23, the primary air is introduced into the direct evaporative cooling filler 27 after being subjected to wet cooling through an indirect evaporative cooler 21 and the like to perform heat and humidity exchange with high-temperature water sprayed by the spray exhaust 28, the air is humidified and is discharged out of the unit through an air outlet 29, and the water is cooled and falls into the bottom of the unit to enter a water supply pipe 2 of a primary water system.
Free cooling mode:
in winter, when the outdoor temperature is below zero, the free cooling system water pump 12 is started, the glycol solution is cooled by the free cooling surface air cooler 25 in the evaporative cooling water chilling unit 1, then the glycol solution is guided into the precision air conditioning cooler 13 through the free cooling liquid supply pipe 11 to absorb the heat of the return air of the machine room, and then the return air returns to the free cooling surface air cooler 25 through the free cooling liquid return pipe 10.
The air supply fan 9 of the precision air conditioner is started in the machine room, the return air in the closed heat channel 15 of the machine room is sent into the inside of the precision air conditioner to be cooled, the cooled return air is sent into the machine room in a diffused mode to absorb the heat productivity of the server, and the air with the increased temperature enters the closed heat channel 15 again to circulate in the mode.
At this time, only the exhaust fan of the cooling tower of the evaporative cooling chiller is started, and outdoor fresh air is introduced into the chiller to cool the glycol solution in the free cooling surface cooler 25.
Claims (4)
1. A liquid cooling system based on evaporative cooling technology is characterized by comprising a liquid cooling server unit (16) arranged in a machine room, a plate heat exchanger (5) and an evaporative cooling water chilling unit, two sides of the liquid cooling server unit (16) are respectively connected with one end of a secondary water system water supply pipe (6) and one end of a secondary water system water return pipe (8), the other ends of the secondary water system water supply pipe (6) and the secondary water system water return pipe (8) are both connected with the plate heat exchanger (5), a secondary water system water pump (7) is arranged on the secondary water system water supply pipe (6), the plate heat exchanger (5) is respectively connected with the evaporative cooling water chilling unit (1) through a primary water system water supply pipe (2) and a primary water system water return pipe (3), a primary water system water pump (4) is arranged on the primary water system water return pipe (3);
a closed hot channel (15) is arranged at the top in the machine room, the closed hot channel (15) is communicated with a precision air conditioner arranged in the machine room through a precision air conditioner air return opening (14), and a precision air conditioner cooler (13) is arranged in the precision air conditioner;
the liquid cooling server unit (16) comprises an indirect cooling plate water inlet pipe (17), an indirect cooling plate (18) and an indirect cooling plate water outlet pipe (19), the indirect cooling plate (18) is attached above the server chip (20), one side of the indirect cooling plate (18) is provided with the indirect cooling plate water inlet pipe (17), the other side of the indirect cooling plate (18) is provided with the indirect cooling plate water outlet pipe (19), and the indirect cooling plate water inlet pipe (17) and the indirect cooling plate water outlet pipe (19) are respectively connected with a secondary water system water supply pipe (6) and a secondary water system water return pipe (8);
the evaporative cooling water chilling unit (1) is of a bilateral symmetry structure and comprises a unit shell, wherein a primary air inlet (24), a secondary air inlet (23), an air filter (22), a free cooling surface air cooler (25), an indirect evaporative cooler (21) and an evaporative cooling water chilling unit cooling tower are sequentially arranged on the left side and the right side in the unit shell from outside to inside, the primary air inlet (24) and the secondary air inlet (23) are arranged at the end part of the unit shell, and the primary air inlet (24) is positioned on the upper side of the secondary air inlet (23); a free-cooling surface air cooler (25) in the evaporative cooling water chilling unit (1) is connected with a precision air-conditioning cooler (13) through a free-cooling liquid supply pipe (11) and a free-cooling liquid return pipe (10); the evaporative cooling water chilling unit cooling tower set up the middle part at the unit casing, lower part in the evaporative cooling water chilling unit cooling tower is provided with direct evaporative cooling filler (27), direct evaporative cooling filler (27) top is provided with spouts row (28), the top of spouting row (28) is provided with breakwater (30), and spouts row (28) and connect primary water system wet return (3), and the upper portion of evaporative cooling water chilling unit cooling tower is provided with the exhaust pipe, the top of exhaust pipe sets up to evaporative cooling water chilling unit tower segment air exit (29), and is provided with the exhaust fan in the exhaust pipe.
2. A liquid-cooled cooling system based on evaporative cooling technology, as set forth in claim 1, characterized in that a free-cooling system water pump (12) is provided on the free-cooling liquid supply pipe (11).
3. The liquid cooling system based on the evaporative cooling technology as claimed in claim 1, wherein a precise air conditioner air outlet is provided on a side wall of the precise air conditioner close to the liquid cooling server unit (16), and a precise air conditioner air supply fan (9) is provided in the precise air conditioner at a position corresponding to the precise air conditioner air outlet.
4. A liquid-cooled cooling system based on evaporative cooling technology as claimed in claim 1, wherein the top of the indirect evaporative cooler (21) is provided with an indirect evaporative cooler overfire air outlet (26).
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| CN201910110329.6A CN109769376B (en) | 2019-02-11 | 2019-02-11 | Liquid cooling system based on evaporative cooling technology |
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| CN201910110329.6A CN109769376B (en) | 2019-02-11 | 2019-02-11 | Liquid cooling system based on evaporative cooling technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110191619B (en) * | 2019-05-31 | 2021-03-05 | 西安工程大学 | Modularized air supply air-conditioning system suitable for indirect evaporation natural cooling of data center |
| CN111295085A (en) * | 2020-03-25 | 2020-06-16 | 西安工程大学 | Evaporative cooling air-conditioning system for data center based on air cooling and water cooling combined unit |
| CN111465276B (en) * | 2020-04-24 | 2022-06-21 | 苏州浪潮智能科技有限公司 | Data center cooling system capable of cooling in grading mode |
| CN111947262A (en) * | 2020-08-31 | 2020-11-17 | 西安工程大学 | Air conditioning system for data center based on combination of liquid cooling and evaporative cooling technology |
| CN113864932A (en) * | 2021-11-05 | 2021-12-31 | 深圳市英维克科技股份有限公司 | Air conditioner cooling system |
| CN116294284A (en) * | 2023-03-06 | 2023-06-23 | 珠海格力电器股份有限公司 | Composite refrigeration system, control method and air conditioner |
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| CN104010478A (en) * | 2014-06-13 | 2014-08-27 | 浪潮电子信息产业股份有限公司 | Realizing method for data center free of fan arrangement in cabinets |
| CN105805838A (en) * | 2016-05-17 | 2016-07-27 | 江苏奥林维尔环境设备有限公司 | Special precise air conditioner for full-sensible-heat energy-saving computer room/equipment cabinet |
| CN107894044A (en) * | 2017-10-26 | 2018-04-10 | 西安工程大学 | Suitable for the natural cooling air-conditioner set of data center of the Northwest |
| CN108848655B (en) * | 2018-06-29 | 2020-08-25 | 西安工程大学 | Natural cooling air conditioning system for data center with combination of fan wall and radiation module |
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| US5770903A (en) * | 1995-06-20 | 1998-06-23 | Sundstrand Corporation | Reflux-cooled electro-mechanical device |
| CN203116208U (en) * | 2013-03-19 | 2013-08-07 | 西安工程大学 | External cooling type evaporative cooling and mechanical refrigeration combined air-conditioning system for data machine room |
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Effective date of registration: 20230714 Address after: No. 12-1, Guanzhou Road, Gaishan Town, Cangshan District, Fuzhou City, Fujian Province 350007 Patentee after: AOLAN (FUJIAN) INDUSTRY Co.,Ltd. Address before: 710048 No. 19 Jinhua South Road, Shaanxi, Xi'an Patentee before: XI'AN POLYTECHNIC University |