CN113993360B - Energy-saving cooling system and method for data center - Google Patents
Energy-saving cooling system and method for data center Download PDFInfo
- Publication number
- CN113993360B CN113993360B CN202111433245.XA CN202111433245A CN113993360B CN 113993360 B CN113993360 B CN 113993360B CN 202111433245 A CN202111433245 A CN 202111433245A CN 113993360 B CN113993360 B CN 113993360B
- Authority
- CN
- China
- Prior art keywords
- water
- compressor
- heat exchanger
- valve
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 253
- 239000003507 refrigerant Substances 0.000 claims abstract description 154
- 230000005494 condensation Effects 0.000 claims abstract description 88
- 238000009833 condensation Methods 0.000 claims abstract description 88
- 229910052731 fluorine Inorganic materials 0.000 claims description 64
- 239000011737 fluorine Substances 0.000 claims description 64
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 62
- 239000007788 liquid Substances 0.000 claims description 34
- 239000007921 spray Substances 0.000 claims description 32
- 238000005507 spraying Methods 0.000 claims description 29
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20309—Evaporators
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20345—Sprayers; Atomizers
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
-
- 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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20372—Cryogenic cooling; Nitrogen liquid cooling
-
- 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
-
- 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
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The application discloses an energy-saving cooling system and method for a data center, wherein on the basis of single-stage compression refrigeration, two-stage compression refrigeration is arranged, a refrigerant discharged by a second compressor exchanges heat with medium-temperature water from a primary condensation heat exchanger in a high-temperature condenser, and then enters a secondary condensation heat exchanger, the refrigerant discharged by the second compressor is evaporated and absorbs heat in the secondary condensation heat exchanger to cool the refrigerant discharged by the first compressor, and the refrigerant discharged by the second compressor returns to the second compressor after heat exchange is completed. The application sets high-temperature condensation heat exchange to reduce the exhaust temperature of the single-stage compressor, improves the refrigerating effect of the compressor, and further improves the refrigerating effect.
Description
Technical Field
The application relates to the field of data center cooling, in particular to an energy-saving cooling system and method for a data center.
Background
With the rapid development of the electronic information industry, the development of data centers also enters a new stage. The reliability of the air conditioning system directly affects the safety of the data center. With the increasing heating value of the data center, the cooling capacity and energy conservation of the air conditioner of the data center are more and more important. The traditional air conditioner of the data center machine room can also perform refrigeration under the condition that the outdoor environment temperature is less than or equal to 40 ℃, but when the environment temperature is more and more higher than 40 ℃, the refrigeration effect is poorer and worse, the data center requirement can not be met, the exhaust temperature of the compressor can be very high under the high-temperature environment, the cooling effect of the compressor is poor, and the refrigeration effect is influenced.
Disclosure of Invention
In order to solve the problems, the application provides an energy-saving cooling system and an energy-saving cooling method for a data center, which are provided with high-temperature condensation heat exchange to reduce the exhaust temperature of a compressor, improve the refrigerating effect of the compressor and further improve the refrigerating effect.
In a first aspect, the technical scheme of the application provides an energy-saving cooling system of a data center, which comprises a first compressor, a second compressor, a primary condensation heat exchanger, a secondary condensation heat exchanger, a high-temperature condensation heat exchanger, a first evaporator, a gas-liquid separator, a first expansion valve, a second expansion valve, a first check valve, a water supply part and a spraying part;
the first refrigerant outlet of the first compressor is communicated with the refrigerant inlet of the primary condensation heat exchanger, the refrigerant outlet of the primary condensation heat exchanger is communicated with the first refrigerant inlet of the secondary condensation heat exchanger, the first refrigerant outlet of the secondary condensation heat exchanger is communicated with the refrigerant inlet of the first evaporator through the second expansion valve, the refrigerant outlet of the first evaporator is communicated with the first refrigerant inlet of the gas-liquid separator, and the refrigerant outlet of the gas-liquid separator is communicated with the refrigerant inlet of the first compressor;
the refrigerant outlet of the second compressor is communicated with the refrigerant inlet of the high-temperature condensing heat exchanger, the refrigerant outlet of the high-temperature condensing heat exchanger is communicated with the second refrigerant inlet of the secondary condensing heat exchanger through the first expansion valve, and the second refrigerant outlet of the secondary condensing heat exchanger is communicated with the refrigerant inlet of the second compressor;
the water outlet end of the water supply component is communicated with the water inlet of the primary condensation heat exchanger, the water outlet of the primary condensation heat exchanger is communicated with the water inlet of the high-temperature condensation heat exchanger, and the water outlet of the high-temperature condensation heat exchanger is communicated with the water return end of the water supply component through a first check valve; the spraying part is used for cooling backwater of the water supply part.
Further, a fourth electromagnetic valve is arranged on a pipeline of the first compressor communicated with the primary condensing heat exchanger;
the system also comprises an air-cooled condenser, a fluorine-cooled coil pipe, a fluorine pump, a one-way valve, a third expansion valve, a second evaporator and a second fan;
the second refrigerant outlet of the first compressor is communicated with the first refrigerant inlet of the air-cooled condenser, the refrigerant outlet of the air-cooled condenser is communicated with the refrigerant inlet of the fluorine-cooled coil, the refrigerant outlet of the fluorine-cooled coil is communicated with the refrigerant inlet of the fluorine pump, the refrigerant outlet of the fluorine pump is communicated with the refrigerant inlet of the second evaporator through the third expansion valve, and the first refrigerant outlet of the second evaporator is communicated with the second refrigerant inlet of the gas-liquid separator;
the inlet end of the one-way valve is communicated with the refrigerant inlet of the fluorine pump, and the outlet end of the one-way valve is communicated with the refrigerant outlet of the fluorine pump;
the fluorine cooling coil pipe is sprayed by the spraying component for cooling; the second fan is arranged at the air-cooled condenser and used for cooling the air-cooled condenser.
Further, a third electromagnetic valve is arranged on a pipeline for communicating the first compressor with the air-cooled condenser, and a first electromagnetic valve is arranged on a pipeline for communicating the second evaporator with the gas-liquid separator;
the second refrigerant outlet of the second evaporator is communicated with the second refrigerant inlet of the air-cooled condenser, and a second electromagnetic valve is arranged on a pipeline for communicating the second evaporator with the air-cooled condenser.
Further, the water supply part comprises a water circulation pump, a water cooling coil pipe, a water heat exchange coil pipe, a first electric valve, a second electric valve, a third electric valve, a fourth electric valve and a second check valve;
the water outlet of the water circulation pump is communicated with the water inlet of the primary condensation heat exchanger through a third electric valve; one path of water outlet of the high-temperature condensing heat exchanger is communicated with the water inlet of the water cooling coil pipe through the second electric valve after passing through the first check valve, the other path of water outlet of the high-temperature condensing heat exchanger is communicated with the water inlet of the water heat exchange coil pipe through the first electric valve, and the water outlet of the water heat exchange coil pipe is communicated with the water inlet of the water cooling coil pipe through the second check valve; the water outlet of the water cooling coil pipe is communicated with the water inlet of the water circulating pump;
the water-cooling coil is cooled by the spraying component;
a standby pipeline is further arranged between an upstream pipeline of the third electric valve and a downstream pipeline of the first check valve, and the fourth electric valve is arranged on the standby pipeline; the water outlet of the standby pipeline is positioned at the upstream of the first electric valve and the second electric valve;
the system also includes a first fan; the first fan is a water heat exchange coil, a first evaporator and a second evaporator for cooling.
Further, the spraying component comprises a water collecting disc, a spraying pump, a spray head and a third fan;
the water inlet of the spray pump is communicated with the water collecting disc, the water outlet of the spray pump is communicated with the spray head, and the spray head sprays water to cool the water cooling coil pipe and the fluorine cooling coil pipe; the third fan is arranged at the upper end of the spray head.
In a second aspect, the present application provides an energy-saving cooling method for a data center, including a high-temperature cooling stage, where the stage includes the following steps:
starting the first compressor and the second compressor, and starting the water supply part;
the refrigerant discharged by the first compressor is primarily condensed with cold water from the water supply component through the primary condensation heat exchanger, then enters the secondary condensation heat exchanger to be secondarily condensed and supercooled, enters the first evaporator to cool the hot air of the data center after being throttled and cooled through the second expansion valve, and finally returns to the gas-liquid separator and then returns to the first compressor;
meanwhile, the refrigerant discharged by the second compressor exchanges heat with medium-temperature water from the primary condensation heat exchanger in the high-temperature condenser, is throttled and cooled by the first expansion valve, enters the secondary condensation heat exchanger, and is cooled by the refrigerant discharged by the second compressor in the secondary condensation heat exchanger through evaporation and heat absorption, and the refrigerant discharged by the first compressor returns to the second compressor after heat exchange is completed; the high temperature water discharged from the high temperature condensing heat exchanger is cooled by the spraying part and then returned to the water supply part.
Further, the method also includes a sub-high temperature cooling stage comprising the following process:
starting the first compressor, closing the second compressor and starting the water supply part;
the refrigerant discharged by the first compressor is primarily condensed with cold water from the water supply component through the primary condensation heat exchanger, then enters the secondary condensation heat exchanger to be secondarily condensed and supercooled, enters the first evaporator to cool the hot air of the data center after being throttled and cooled through the second expansion valve, and finally returns to the gas-liquid separator and then returns to the first compressor;
meanwhile, the medium-temperature water discharged by the primary condensation heat exchanger passes through the high-temperature condensation heat exchanger, is discharged by the high-temperature condensation heat exchanger, is cooled by the spraying part, and returns to the water supply part.
Further, in the high-temperature cooling stage and the secondary high-temperature cooling stage, a fourth electromagnetic valve is opened, and the refrigerant discharged by the first compressor enters the primary condensing heat exchanger through the fourth electromagnetic valve;
the method further comprises a medium temperature cooling stage comprising the following process:
starting the first compressor, closing the second compressor, closing the fourth electromagnetic valve, starting the water supply part and starting the fluorine pump;
the refrigerant discharged by the first compressor is precooled by the air-cooled condenser, enters the fluorine-cooled coil pipe and is cooled again by the spraying part, then enters the second evaporator for evaporative cooling by the one-way valve, the fluorine pump and the third expansion valve, and the gasified refrigerant returns to the gas-liquid separator and then returns to the first compressor.
Further, in the medium-temperature cooling stage, the first electromagnetic valve and the third electromagnetic valve are opened, and the second electromagnetic valve is closed; the refrigerant discharged by the first compressor enters the air-cooled condenser through the third electromagnetic valve, and the refrigerant gasified by the second evaporator returns to the gas-liquid separator through the first electromagnetic valve;
the method further comprises a cryogenically cooled stage comprising the following process:
closing the first compressor and the second compressor, closing the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve, opening the second electromagnetic valve, and closing the water supply part;
the gasified refrigerant after the second evaporator absorbs the hot air of the data center enters the fluorine cooling coil pipe to be cooled again by the spraying component after being precooled by the air cooling condenser, then the power is lifted by the fluorine pump, and the refrigerant enters the second evaporator again to be cooled by evaporation by the third expansion valve, and the circulation is performed.
Further, in the process of opening the water supply part, the water circulation pump is started, and in the normal state of the fluorine cold part, the second electric valve and the third electric valve are opened, and the first electric valve and the fourth electric valve are closed; the water-cooling coil is sprayed and cooled by the spraying component, and the cooled water is pumped by the water-circulating pump, so that the water is circulated;
when the fluorine cold part is abnormal, the second electric valve and the third electric valve are closed, and the first electric valve and the fourth electric valve are opened; the water discharged by the water circulation pump enters the water heat exchange coil pipe through the fourth electric valve and the first electric valve to exchange heat and cool with hot air of the data center, then enters the water cooling coil pipe through the second check valve, the water cooling coil pipe is sprayed and cooled by the spraying component, and the cooled water is pumped by the water circulation pump, so that the water is circulated.
Compared with the prior art, the energy-saving cooling system and method for the data center have the following beneficial effects: on the basis of single-stage compression refrigeration, two-stage compression refrigeration is arranged, the refrigerant discharged by the second compressor exchanges heat with medium-temperature water from the primary condensation heat exchanger in the high-temperature condenser, and enters the secondary condensation heat exchanger, the refrigerant discharged by the second compressor absorbs heat by evaporation in the secondary condensation heat exchanger to cool the refrigerant discharged by the first compressor, and the refrigerant discharged by the second compressor returns to the second compressor after heat exchange is completed. The application sets high-temperature condensation heat exchange to reduce the exhaust temperature of the single-stage compressor, improves the refrigerating effect of the compressor, and further improves the refrigerating effect.
Drawings
For a clearer description of embodiments of the application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a data center energy-saving cooling system according to the present application.
FIG. 2 is a schematic structural diagram of an embodiment of an energy-saving cooling system for a data center according to the present application.
In the figure, the first fan, the 2-water heat exchange coil, the 3-second check valve, the 4-third expansion valve, the 5-one-way valve, the 6-fluorine pump, the 7-second evaporator, the 8-second electric valve, the 9-first electric valve, the 10-second expansion valve, the 11-first expansion valve, the 12-high temperature condensing heat exchanger, the 13-secondary condensing heat exchanger, the 14-second compressor, the 15-first check valve, the 16-fourth electric valve, the 17-third electric valve, the 18-primary condensing heat exchanger, the 19-fourth electromagnetic valve, the 20-first compressor, the 21-first evaporator, the 22-gas-liquid separator, the 23-first electromagnetic valve, the 24-third electromagnetic valve, the 25-water circulation pump, the 26-second fan, the 27-second electromagnetic valve, the 28-spray pump, the 29-water collecting tray, the 30-air-cooling condenser, the 31-third fan, the 32-spray head, the 33-water-cooling coil, the 34-fluorine tray tube, the 35-water supply part and the 36-spray part.
Detailed Description
In order to better understand the aspects of the present application, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
The first embodiment provides an energy-saving cooling system for a data center, which is provided with two stages of compressors, and realizes high-temperature condensation heat exchange of a first stage of compressor by a second stage of compressor, thereby improving the refrigerating effect.
Referring to fig. 1, a schematic structural diagram of an energy-saving cooling system for a data center according to the present application includes a first compressor 20, a second compressor 14, a primary condensing heat exchanger 18, a secondary condensing heat exchanger 13, a high-temperature condensing heat exchanger 12, a first evaporator 21, a gas-liquid separator 22, a first expansion valve 11, a second expansion valve 10, a first check valve 15, a water supply part 35, and a spray part 36.
The first refrigerant outlet of the first compressor 20 is communicated with the refrigerant inlet of the primary condensation heat exchanger 18, the refrigerant outlet of the primary condensation heat exchanger 18 is communicated with the first refrigerant inlet of the secondary condensation heat exchanger 13, the first refrigerant outlet of the secondary condensation heat exchanger 13 is communicated with the refrigerant inlet of the first evaporator 21 through the second expansion valve 10, the refrigerant outlet of the first evaporator 21 is communicated with the first refrigerant inlet of the gas-liquid separator 22, and the refrigerant outlet of the gas-liquid separator 22 is communicated with the refrigerant inlet of the first compressor 20.
The refrigerant outlet of the second compressor 14 is communicated with the refrigerant inlet of the high-temperature condensing heat exchanger 12, the refrigerant outlet of the high-temperature condensing heat exchanger 12 is communicated with the second refrigerant inlet of the secondary condensing heat exchanger 13 through the first expansion valve 11, and the second refrigerant outlet of the secondary condensing heat exchanger 13 is communicated with the refrigerant inlet of the second compressor 14.
The water outlet end of the water supply part 35 is communicated with the water inlet of the primary condensation heat exchanger 18, the water outlet of the primary condensation heat exchanger 18 is communicated with the water inlet of the high-temperature condensation heat exchanger 12, and the water outlet of the high-temperature condensation heat exchanger 12 is communicated with the water return end of the water supply part 35 through the first check valve 15; the shower member 36 cools the return water of the water supply member 35.
The first compressor 20 and the second compressor 14 realize high-temperature cooling, and the working process is as follows:
the first compressor 20 and the second compressor 14 are turned on, and the water supply part 35 is turned on; the refrigerant discharged by the first compressor 20 is primarily condensed by the primary condensation heat exchanger 18 and cold water from the water supply part 35, then enters the secondary condensation heat exchanger 13 to be secondarily condensed and supercooled, then enters the first evaporator 21 to cool the hot air of the data center after being throttled and cooled by the second expansion valve 10, and finally returns to the gas-liquid separator 22 and then returns to the first compressor 20; meanwhile, the refrigerant discharged by the second compressor 14 exchanges heat with the medium-temperature water from the primary condensation heat exchanger 18 in the high-temperature condenser, is throttled and cooled by the first expansion valve 11, enters the secondary condensation heat exchanger 13, and is evaporated and absorbed by the refrigerant discharged by the second compressor 14 in the secondary condensation heat exchanger 13 to cool the refrigerant discharged by the first compressor 20, and the refrigerant discharged by the second compressor 14 returns to the second compressor 14 after heat exchange is completed; the high-temperature water discharged from the high-temperature condensing heat exchanger 12 is cooled by the shower member 36 and then returned to the water supply member 35.
When the ambient temperature is higher than 40 ℃, the cooling process is implemented, and a better cooling effect is realized.
After the ambient temperature is lower than 40 degrees, the single-stage compression refrigeration can meet the refrigeration requirement, and to save energy, the second compressor 14 can be turned off, and the first compressor 20 can independently realize sub-high-temperature cooling, and the working process is as follows:
the refrigerant discharged by the first compressor 20 is primarily condensed by the primary condensation heat exchanger 18 and cold water from the water supply part 35, then enters the secondary condensation heat exchanger 13 to be secondarily condensed and supercooled, then enters the first evaporator 21 to cool the hot air of the data center after being throttled and cooled by the second expansion valve 10, and finally returns to the gas-liquid separator 22 and then returns to the first compressor 20; meanwhile, the secondary high temperature water discharged from the primary condensing heat exchanger 18 passes through the high temperature condensing heat exchanger 12, and is discharged from the high temperature condensing heat exchanger 12, cooled by the spray part 36, and returned to the water supply part 35.
As shown in fig. 2, in some embodiments, the water supply component 35 includes a water circulation pump 25, a water cooling coil 33, a water heat exchange coil 2, a first electrically operated valve 9, a second electrically operated valve 8, a third electrically operated valve 17, a fourth electrically operated valve 16, and a second check valve 3.
The water outlet of the water circulation pump 25 is communicated with the water inlet of the primary condensation heat exchanger 18 through the third electric valve 17; one path of water outlet of the high-temperature condensing heat exchanger 12 is communicated with the water inlet of the water cooling coil 33 through the second electric valve 8 after passing through the first check valve 15, the other path of water outlet of the high-temperature condensing heat exchanger is communicated with the water inlet of the water heat exchange coil 2 through the first electric valve 9, and the water outlet of the water heat exchange coil 2 is communicated with the water inlet of the water cooling coil 33 through the second check valve 3; the water outlet of the water cooling coil 33 is communicated with the water inlet of the water circulating pump 25. Wherein the water cooling coil 33 is cooled by the shower member 36.
A backup line is further provided between the upstream line of the third electrically operated valve 17 and the downstream line of the first check valve 15, and the fourth electrically operated valve 16 is provided on the backup line; the water outlet of the standby pipeline is positioned upstream of the first electric valve 9 and the second electric valve 8.
During high-temperature cooling and sub-high-temperature cooling, the first compressor 20 and the second compressor 14 are normal during high-temperature cooling in the normal operation state of the fluorine cooling part, the first compressor 20 is normal during sub-high-temperature cooling, the second and third electric valves 17 are opened, the first electric valve 9 and the fourth electric valve 16 are closed, the drainage of the water circulation pump 25 enters the primary condensation heat exchanger 18 through the third electric valve 17, the drainage of the high-temperature condensation heat exchanger 12 enters the water cooling coil 33 through the second electric valve 8 after passing through the first check valve 15, the spray part 36 sprays and cools the water cooling coil 33, and the cooled water is pumped away by the water circulation pump 25 so as to circulate. The first compressor 20 or the second compressor 14 is abnormal when the fluorine cold part is abnormal and the first compressor 20 is abnormal when the fluorine cold part is abnormal and the second electric valve 8 and the third electric valve 17 are closed and the first electric valve 9 and the fourth electric valve 16 are opened; the water discharged by the water circulation pump 25 enters the water heat exchange coil 2 through the fourth electric valve 16 and the first electric valve 9 to exchange heat with hot air of the data center for cooling, then enters the water cooling coil 33 through the second check valve 3, the water cooling coil 33 is sprayed and cooled by the spraying part 36, and the cooled water is pumped by the water circulation pump 25, so that the water is circulated, and emergency cooling is provided for the system.
In some embodiments, spray assembly 36 includes a water collection tray 29, a spray pump 28, a spray head 32, and a third fan 31. The water inlet of the spray pump 28 is communicated with the water collecting disc 29, the water outlet of the spray pump 28 is communicated with the spray head 32, and the spray head 32 sprays water to cool the water cooling coil 33; the third fan 31 is disposed at the upper end of the shower head 32.
In some embodiments, the secondary high temperature cooling is adopted between 30 degrees and 40 degrees, and after the temperature is lower than 30 degrees, a middle temperature cooling component can be further arranged to realize middle temperature cooling, wherein the middle temperature cooling component comprises an air cooling condenser 30, a fluorine cooling coil pipe, a fluorine pump 6, a one-way valve 5, a third expansion valve 4, a second evaporator 7 and a second fan 26.
The second refrigerant outlet of the first compressor 20 is communicated with the first refrigerant inlet of the air-cooled condenser 30, the refrigerant outlet of the air-cooled condenser 30 is communicated with the refrigerant inlet of the fluorine-cooled coil pipe, the refrigerant outlet of the fluorine-cooled coil pipe 34 is communicated with the refrigerant inlet of the fluorine pump 6, the refrigerant outlet of the fluorine pump 6 is communicated with the refrigerant inlet of the second evaporator 7 through the third expansion valve 4, and the first refrigerant outlet of the second evaporator 7 is communicated with the second refrigerant inlet of the gas-liquid separator 22; the inlet end of the one-way valve 5 is communicated with the refrigerant inlet of the fluorine pump 6, and the outlet end of the one-way valve 5 is communicated with the refrigerant outlet of the fluorine pump 6; the fluorine cooling coil is sprayed by a spraying component 36 for cooling; the second fan 26 is disposed at the air-cooled condenser 30 to cool the air-cooled condenser 30. In this process, the fluorine pump 6 is operated at full speed, and the shortage of the refrigerating capacity is supplemented by the variable frequency refrigeration of the first compressor 20.
The fourth electromagnetic valve 19 is disposed on a pipeline where the first compressor 20 communicates with the primary condensing heat exchanger 18, the fourth electromagnetic valve 19 is opened during the secondary high-temperature cooling and the high-temperature cooling, the refrigerant of the first compressor 20 is discharged into the primary condensing heat exchanger 18, the fourth electromagnetic valve 19 is closed during the medium-temperature cooling, and the refrigerant of the first compressor 20 is discharged into the air-cooled condenser 30.
In addition, during the intermediate temperature cooling phase, the water supply part 35 is operated normally, and the system is cooled by the water supply part 35 in emergency when the first compressor 20 is out of order.
In some embodiments, the temperature between 20 degrees and 30 degrees is set as the medium temperature, and after the temperature is lower than 20 degrees, all compression refrigeration parts can stop working, and the system refrigeration is provided by the fluorine pump 6.
Correspondingly, a third electromagnetic valve 24 is arranged on a pipeline for communicating the first compressor 20 with the air-cooled condenser 30, and a first electromagnetic valve 23 is arranged on a pipeline for communicating the second evaporator 7 with the gas-liquid separator 22. The second refrigerant outlet of the second evaporator 7 is communicated with the second refrigerant inlet of the air-cooled condenser 30, and a second electromagnetic valve 27 is arranged on a pipeline of the second evaporator 7 communicated with the air-cooled condenser 30. At the time of intermediate-temperature cooling, the first solenoid valve 23 and the third solenoid valve 24 are opened, and the second solenoid valve 27 is closed; the refrigerant discharged from the first compressor 20 enters the air-cooled condenser 30 through the third electromagnetic valve 24, and the refrigerant gasified by the second evaporator 7 returns to the gas-liquid separator 22 through the first electromagnetic valve 23. During low-temperature cooling, the first electromagnetic valve 23 and the third electromagnetic valve 24 are closed, the second electromagnetic valve 27 is opened, the gasified refrigerant after the second evaporator 7 absorbs hot air of the data center enters the fluorine-cooled coil 34 to be cooled again by the spraying component 36 after being precooled by the air-cooled condenser 30, then the power is lifted by the fluorine pump 6, and enters the second evaporator 7 again to be cooled by evaporation through the third expansion valve 4, and the cycle is performed.
The first evaporator 21, the second evaporator 7 and the water heat exchange coil 2 are cooled by the first fan 1 to form an air treatment module.
Example two
On the basis of the first embodiment, the application also provides an energy-saving cooling method for the data center.
The method comprises a high-temperature cooling stage, wherein the data center with the environmental temperature exceeding 40 can be effectively cooled, and the high-temperature cooling stage comprises the following steps:
the first compressor 20 and the second compressor 14 are turned on, and the water supply part 35 is turned on. The refrigerant discharged from the first compressor 20 is primarily condensed with cold water from the water supply part 35 through the primary condensation heat exchanger 18, then enters the secondary condensation heat exchanger 13 to be secondarily condensed and supercooled, then enters the first evaporator 21 to cool the hot air of the data center after being throttled and cooled through the second expansion valve 10, and finally returns to the gas-liquid separator 22 and then returns to the first compressor 20.
Meanwhile, the refrigerant discharged by the second compressor 14 exchanges heat with the medium-temperature water from the primary condensation heat exchanger 18 in the high-temperature condenser, is throttled and cooled by the first expansion valve 11, enters the secondary condensation heat exchanger 13, and is evaporated and absorbed by the refrigerant discharged by the second compressor 14 in the secondary condensation heat exchanger 13 to cool the refrigerant discharged by the first compressor 20, and the refrigerant discharged by the second compressor 14 returns to the second compressor 14 after heat exchange is completed; the high-temperature water discharged from the high-temperature condensing heat exchanger 12 is cooled by the shower member 36 and then returned to the water supply member 35.
After the ambient temperature is lower than 40 ℃, single-stage compression refrigeration is used, and the temperature of the sub-high temperature cooling stage is reduced by single-stage compression, wherein the sub-high temperature cooling stage comprises the following processes:
the first compressor 20 is turned on, the second compressor 14 is turned off, and the water supply part 35 is turned on. The refrigerant discharged from the first compressor 20 is primarily condensed with cold water from the water supply part 35 through the primary condensation heat exchanger 18, then enters the secondary condensation heat exchanger 13 to be secondarily condensed and supercooled, then enters the first evaporator 21 to cool the hot air of the data center after being throttled and cooled through the second expansion valve 10, and finally returns to the gas-liquid separator 22 and then returns to the first compressor 20. Meanwhile, the medium-temperature water discharged from the primary condensing heat exchanger 18 passes through the high-temperature condensing heat exchanger 12, and is discharged from the high-temperature condensing heat exchanger 12, cooled by the spraying part 36, and returned to the water supply part 35.
After the ambient temperature is lower than 30 ℃, the fluorine pump 6 and the compressor are used for realizing medium-temperature cooling, and the medium-temperature cooling stage comprises the following steps:
the first compressor 20 is turned on, the second compressor 14 is turned off, the fourth solenoid valve 19 is turned off, the water supply part 35 is turned on, and the fluorine pump 6 is turned on. The refrigerant discharged from the first compressor 20 is precooled by the air-cooled condenser 30, enters the fluorine-cooled coil pipe and is cooled again by the spraying part 36, then enters the second evaporator 7 through the one-way valve 5, the fluorine pump 6 and the third expansion valve 4 for evaporative cooling, and the gasified refrigerant returns to the gas-liquid separator 22 and then returns to the first compressor 20.
In the high-temperature cooling stage and the sub-high-temperature cooling stage, the fourth solenoid valve 19 is opened, and the refrigerant discharged from the first compressor 20 enters the primary condensing heat exchanger 18 through the fourth solenoid valve 19.
After the ambient temperature is lower than 20 ℃, the fluorine pump 6 is used for realizing low-temperature cooling, and the low-temperature cooling stage comprises the following processes:
the first and second compressors 20 and 14 are turned off, the first, third and fourth solenoid valves 23, 24 and 19 are turned off, the second solenoid valve 27 is turned on, and the water supply part 35 is turned off. The gasified refrigerant after the second evaporator 7 absorbs the hot air of the data center enters the fluorine cooling coil 34 to be cooled again by the spraying part 36 after being precooled by the air cooling condenser 30, then the power is lifted by the fluorine pump 6, and enters the second evaporator 7 again to be cooled by evaporation by the third expansion valve 4, and the circulation is performed.
In the medium-temperature cooling stage, the first solenoid valve 23 and the third solenoid valve 24 are opened, and the second solenoid valve 27 is closed; the refrigerant discharged from the first compressor 20 enters the air-cooled condenser 30 through the third electromagnetic valve 24, and the refrigerant gasified by the second evaporator 7 returns to the gas-liquid separator 22 through the first electromagnetic valve 23.
In the process of opening the water supply part 35, the water circulation pump 25 is started, the first compressor 20 and the second compressor 14 are normal when the fluorine cold part is cooled at high temperature in a normal operation state, the first compressor 20 is normal when the fluorine cold part is cooled at low temperature and the fluorine cold part is cooled at medium temperature, the second electric valve 8 and the third electric valve 17 are opened, and the first electric valve 9 and the fourth electric valve 16 are closed; the water discharged from the water circulation pump 25 enters the primary condensing heat exchanger 18 through the third electric valve 17, the water discharged from the high-temperature condensing heat exchanger 12 enters the water cooling coil 33 through the second electric valve 8 after passing through the first check valve 15, the water cooling coil 33 is sprayed and cooled by the spraying part 36, and the cooled water is pumped by the water circulation pump 25, so that the water is circulated.
The first compressor 20 or the second compressor 14 is abnormal when the fluorine cold part is abnormal, the first compressor 20 is abnormal when the second high temperature cooling and the middle temperature cooling are performed, the second electric valve 8 and the third electric valve 17 are closed, and the first electric valve 9 and the fourth electric valve 16 are opened; the water discharged by the water circulation pump 25 enters the water heat exchange coil 2 through the fourth electric valve 16 and the first electric valve 9 to exchange heat with hot air of the data center for cooling, then enters the water cooling coil 33 through the second check valve 3, the water cooling coil 33 is sprayed and cooled by the spraying part 36, and the cooled water is pumped by the water circulation pump 25 to be circulated.
Specifically, the data center energy-saving cooling method provided by the embodiment comprises the following stages.
High-temperature cooling stage (the ambient temperature is more than or equal to 40℃)
The first and second compressors 20 and 14 are turned on, the first and second expansion valves 11 and 10 are turned on, the fourth solenoid valve 19 is turned on, the first, second and third solenoid valves 23, 27 and 24 are closed, the water circulation pump 25 is turned on, the second and third electric valves 8 and 17 are turned on, the first and fourth electric valves 9 and 16 are closed, and the fluorine pump 6 is turned off.
And (3) a refrigerant circulation process: the first compressor 20, the fourth electromagnetic valve 19, the primary condensation heat exchanger 18, the secondary condensation heat exchanger 13, the second expansion valve 10, the first evaporator 21, the gas-liquid separator 22 and the first compressor 20; the second compressor 14-the high-temperature condensing heat exchanger 12-the first expansion valve 11-the secondary condensing heat exchanger 13-the second compressor 14.
The refrigerant discharged from the second compressor 14, that is, the refrigerant in the high-temperature compression portion, in the secondary condensation heat exchanger 13 is evaporated to absorb heat, and the refrigerant discharged from the first compressor 20, that is, the refrigerant in the secondary high-temperature compression portion, is cooled.
The water circulation process comprises the following steps: the water circulation pump 25, the third electric valve 17, the primary condensation heat exchanger 18, the high-temperature condensation heat exchanger 12, the first check valve 15, the second electric valve 8, the water cooling coil 33 and the water circulation pump 25.
(secondary) high-temperature cooling stage (30 ℃ C. Is less than or equal to 40 ℃ C.)
The first compressor 20 is turned on, the second compressor 14 is turned off, the first expansion valve 11 is turned off, the second expansion valve 10 is turned on, the fourth solenoid valve 19 is turned on, the first solenoid valve 23, the second solenoid valve 27 and the third solenoid valve 24 are turned off, the water circulation pump 25 is turned on, the second electric valve 8 and the third electric valve 17 are turned on, the first electric valve 9 and the fourth electric valve 16 are turned off, and the fluorine pump 6 and the third expansion valve 4 are turned off.
And (3) a refrigerant circulation process: the first compressor 20, the fourth electromagnetic valve 19, the primary condensation heat exchanger 18, the secondary condensation heat exchanger 13, the second expansion valve 10, the first evaporator 21, the gas-liquid separator 22 and the first compressor 20.
The water circulation process is the same as the high temperature cooling stage, but the water in the high temperature condensing heat exchanger 12 does not exchange heat because the second compressor 14 is not operated.
(III) intermediate temperature cooling stage (ambient temperature is more than or equal to 20 ℃ and less than 30 ℃)
The first compressor 20 is turned on, the second compressor 14 is turned off, the first expansion valve 11 and the second expansion valve 10 are turned off, the fourth solenoid valve 19 and the second solenoid valve 27 are turned off, the first solenoid valve 23 and the third solenoid valve 24 are turned on, the water circulation pump 25 is turned on, the second electric valve 8 and the third electric valve 17 are turned on, the first electric valve 9 and the fourth electric valve 16 are turned off, and the fluorine pump 6 and the third expansion valve 4 are turned on.
And (3) a refrigerant circulation process: the first compressor 20, the third electromagnetic valve 24, the air-cooled condenser 30, the fluorine cooling coil, the fluorine pump 6, the third expansion valve 4, the second evaporator 7, the first electromagnetic valve 23, the gas-liquid separator 22 and the first compressor 20.
The water circulation process is the same as the high temperature cooling stage, but because the second compressor 14 is not in operation, the refrigerant of the first compressor 20 does not enter the primary condensing heat exchanger 18, and the water in the primary condensing heat exchanger 18 and the high temperature condensing heat exchanger 12 does not exchange heat.
(IV) Low-temperature Cooling stage (ambient temperature < 20 ℃ C.)
The first and second compressors 20 and 14 are closed, the first and second expansion valves 11 and 10 are closed, the first, third and fourth solenoid valves 23, 24 and 19 are closed, the second solenoid valve 27 is opened, the fluorine pump 6 and the third solenoid valve 24 are opened, and the water circulation pump 25 is closed.
The cooling process comprises the following steps: the second evaporator 7, the second electromagnetic valve 27, the air-cooled condenser 30, the fluorine cooling coil, the fluorine pump 6, the third expansion valve 4 and the second evaporator 7.
The water circulation pump 25 is turned on in the high-temperature cooling stage, the sub-high-temperature cooling stage and the medium-temperature cooling stage, and when the fluorine cooling portion is normal, the third electric valve 17 and the second electric valve 8 are turned on, the fourth electric valve 16 and the first electromagnetic valve 23 are turned off, and water circulation is performed according to the water circulation process. When the fluorine cooling part fails and the fluorine cooling cannot be performed normally, the third electric valve 17 and the second electric valve 8 are closed, the fourth electric valve 16 and the first electromagnetic valve 23 are opened, and the water circulation process is as follows: the water circulation pump 25, the fourth electric valve 16, the first electric valve 9, the water heat exchange coil 2, the second check valve 3, the water cooling coil 33 and the water circulation pump 25.
At each stage, the shower member 36 is turned on to cool down the water cooling coil 33 and the fluorine cooling coil.
The foregoing disclosure is merely illustrative of the preferred embodiments of the application and the application is not limited thereto, since modifications and variations may be made by those skilled in the art without departing from the principles of the application.
Claims (10)
1. The energy-saving cooling system of the data center is characterized by comprising a first compressor (20), a second compressor (14), a primary condensation heat exchanger (18), a secondary condensation heat exchanger (13), a high-temperature condensation heat exchanger (12), a first evaporator (21), a gas-liquid separator (22), a first expansion valve (11), a second expansion valve (10), a first check valve (15), a water supply component (35) and a spraying component (36);
the first refrigerant outlet of the first compressor (20) is communicated with the refrigerant inlet of the primary condensation heat exchanger (18), the refrigerant outlet of the primary condensation heat exchanger (18) is communicated with the first refrigerant inlet of the secondary condensation heat exchanger (13), the first refrigerant outlet of the secondary condensation heat exchanger (13) is communicated with the refrigerant inlet of the first evaporator (21) through the second expansion valve (10), the refrigerant outlet of the first evaporator (21) is communicated with the first refrigerant inlet of the gas-liquid separator (22), and the refrigerant outlet of the gas-liquid separator (22) is communicated with the refrigerant inlet of the first compressor (20);
the refrigerant outlet of the second compressor (14) is communicated with the refrigerant inlet of the high-temperature condensing heat exchanger (12), the refrigerant outlet of the high-temperature condensing heat exchanger (12) is communicated with the second refrigerant inlet of the secondary condensing heat exchanger (13) through the first expansion valve (11), and the second refrigerant outlet of the secondary condensing heat exchanger (13) is communicated with the refrigerant inlet of the second compressor (14);
the water outlet end of the water supply component (35) is communicated with the water inlet of the primary condensation heat exchanger (18), the water outlet of the primary condensation heat exchanger (18) is communicated with the water inlet of the high-temperature condensation heat exchanger (12), and the water outlet of the high-temperature condensation heat exchanger (12) is communicated with the water return end of the water supply component (35) through a first check valve (15); the spraying part (36) cools the backwater of the water supply part (35).
2. The energy-saving cooling system of a data center according to claim 1, characterized in that a fourth electromagnetic valve (19) is arranged on a pipeline of the first compressor (20) communicated with the primary condensing heat exchanger (18);
the system also comprises an air-cooled condenser (30), a fluorine cooling coil pipe, a fluorine pump (6), a one-way valve (5), a third expansion valve (4), a second evaporator (7) and a second fan (26);
the second refrigerant outlet of the first compressor (20) is communicated with the first refrigerant inlet of the air-cooled condenser (30), the refrigerant outlet of the air-cooled condenser (30) is communicated with the refrigerant inlet of the fluorine-cooled coil, the refrigerant outlet of the fluorine-cooled coil (34) is communicated with the refrigerant inlet of the fluorine pump (6), the refrigerant outlet of the fluorine pump (6) is communicated with the refrigerant inlet of the second evaporator (7) through the third expansion valve (4), and the first refrigerant outlet of the second evaporator (7) is communicated with the second refrigerant inlet of the gas-liquid separator (22);
the inlet end of the one-way valve (5) is communicated with the refrigerant inlet of the fluorine pump (6), and the outlet end of the one-way valve (5) is communicated with the refrigerant outlet of the fluorine pump (6);
the fluorine cooling coil pipe is sprayed by a spraying component (36) for cooling; the second fan (26) is arranged at the air-cooled condenser (30) and used for cooling the air-cooled condenser (30).
3. The energy-saving cooling system of the data center according to claim 2, wherein a third electromagnetic valve (24) is arranged on a pipeline of the first compressor (20) communicated with the air-cooled condenser (30), and a first electromagnetic valve (23) is arranged on a pipeline of a communicating pipeline of the second evaporator (7) and the gas-liquid separator (22);
the second refrigerant outlet of the second evaporator (7) is communicated with the second refrigerant inlet of the air-cooled condenser (30), and a second electromagnetic valve (27) is arranged on a pipeline for communicating the second evaporator (7) with the air-cooled condenser (30).
4. A data centre energy saving cooling system according to claim 3, characterized in that the water supply means (35) comprises a water circulation pump (25), a water cooling coil (33), a water heat exchanging coil (2), a first electrically operated valve (9), a second electrically operated valve (8), a third electrically operated valve (17), a fourth electrically operated valve (16) and a second non-return valve (3);
the water outlet of the water circulation pump (25) is communicated with the water inlet of the primary condensation heat exchanger (18) through a third electric valve (17); one path of water outlet of the high-temperature condensing heat exchanger (12) is communicated with the water inlet of the water cooling coil pipe (33) through the second electric valve (8) after passing through the first check valve (15), the other path of water outlet of the high-temperature condensing heat exchanger is communicated with the water inlet of the water heat exchange coil pipe (2) through the first electric valve (9), and the water outlet of the water heat exchange coil pipe (2) is communicated with the water inlet of the water cooling coil pipe (33) through the second check valve (3); the water outlet of the water cooling coil pipe (33) is communicated with the water inlet of the water circulating pump (25);
the water-cooling coil pipe (33) is cooled by the spraying part (36);
a standby pipeline is further arranged between an upstream pipeline of the third electric valve (17) and a downstream pipeline of the first check valve (15), and the fourth electric valve (16) is arranged on the standby pipeline; the water outlet of the standby pipeline is positioned at the upstream of the first electric valve (9) and the second electric valve (8);
the system further comprises a first fan (1); the first fan (1) is a water heat exchange coil (2), a first evaporator (21) and a second evaporator (7) for cooling.
5. The data center energy efficient cooling system of claim 4, wherein the spray assembly (36) includes a water collection tray (29), a spray pump (28), a spray head (32), and a third fan (31);
the water inlet of the spray pump (28) is communicated with the water collecting disc (29), the water outlet of the spray pump (28) is communicated with the spray head (32), and the spray head (32) sprays water to cool the water cooling coil (33) and the fluorine cooling coil; the third fan (31) is arranged at the upper end of the spray head (32).
6. A method of energy efficient cooling of a data center based on the system of any one of claims 1-5, comprising a high temperature cooling phase comprising the following process:
starting the first compressor (20) and the second compressor (14), and starting the water supply part (35);
the refrigerant discharged by the first compressor (20) is primarily condensed with cold water from the water supply component (35) through the primary condensation heat exchanger (18), then enters the secondary condensation heat exchanger (13) to be secondarily condensed and supercooled, enters the first evaporator (21) to cool the hot air of the data center after being throttled and cooled by the second expansion valve (10), and finally returns to the gas-liquid separator (22) and then returns to the first compressor (20);
meanwhile, the refrigerant discharged by the second compressor (14) exchanges heat with medium-temperature water from the primary condensation heat exchanger (18) in the high-temperature condenser, is throttled and cooled by the first expansion valve (11) and enters the secondary condensation heat exchanger (13), the refrigerant discharged by the second compressor (14) is evaporated and absorbs heat in the secondary condensation heat exchanger (13) to cool the refrigerant discharged by the first compressor (20), and the refrigerant discharged by the second compressor (14) returns to the second compressor (14) after the heat exchange is completed; the high temperature water discharged from the high temperature condensing heat exchanger (12) is cooled by the spray part (36) and then returned to the water supply part (35).
7. The data center energy efficient cooling method according to claim 6, further comprising a sub-high temperature cooling stage comprising the process of:
starting the first compressor (20), closing the second compressor (14), and starting the water supply part (35);
the refrigerant discharged by the first compressor (20) is primarily condensed with cold water from the water supply component (35) through the primary condensation heat exchanger (18), then enters the secondary condensation heat exchanger (13) to be secondarily condensed and supercooled, enters the first evaporator (21) to cool the hot air of the data center after being throttled and cooled by the second expansion valve (10), and finally returns to the gas-liquid separator (22) and then returns to the first compressor (20);
meanwhile, medium-temperature water discharged from the primary condensation heat exchanger (18) passes through the high-temperature condensation heat exchanger (12), is discharged from the high-temperature condensation heat exchanger (12), is cooled by the spraying component (36), and returns to the water supply component (35).
8. The energy-saving cooling method of a data center according to claim 7, wherein in the high-temperature cooling stage and the sub-high-temperature cooling stage, a fourth electromagnetic valve (19) is opened, and the refrigerant discharged from the first compressor (20) enters the primary condensing heat exchanger (18) through the fourth electromagnetic valve (19);
the method further comprises a medium temperature cooling stage comprising the following process:
starting the first compressor (20), closing the second compressor (14), closing the fourth electromagnetic valve (19), starting the water supply component (35), and starting the fluorine pump (6);
the refrigerant discharged by the first compressor (20) is precooled through the air-cooled condenser (30), enters the fluorine-cooled coil pipe and is cooled again through the spraying component (36), then enters the second evaporator (7) through the one-way valve (5), the fluorine pump (6) and the third expansion valve (4) for evaporative cooling, and the gasified refrigerant returns to the gas-liquid separator (22) and then returns to the first compressor (20).
9. The data center energy-saving cooling method according to claim 8, wherein in the medium temperature cooling stage, the first solenoid valve (23) and the third solenoid valve (24) are opened, and the second solenoid valve (27) is closed; the refrigerant discharged by the first compressor (20) enters the air-cooled condenser (30) through the third electromagnetic valve (24), and the refrigerant gasified by the second evaporator (7) returns to the gas-liquid separator (22) through the first electromagnetic valve (23);
the method further comprises a cryogenically cooled stage comprising the following process:
closing the first compressor (20) and the second compressor (14), closing the first electromagnetic valve (23), the third electromagnetic valve (24) and the fourth electromagnetic valve (19), opening the second electromagnetic valve (27), and closing the water supply part (35);
the second evaporator (7) absorbs the hot air of the data center, gasified refrigerant enters a fluorine cooling coil pipe (34) to be cooled again by a spraying component (36) after being precooled by an air cooling condenser (30), then power is lifted by a fluorine pump (6), and the refrigerant enters the second evaporator (7) again to be evaporated and cooled by a third expansion valve (4), and the circulation is performed.
10. The energy-saving cooling method of a data center according to claim 9, characterized in that in the process of opening the water supply part (35), the water circulation pump (25) is opened, and in the normal state of the fluorine cold section, the second electric valve (8) and the third electric valve (17) are opened, and the first electric valve (9) and the fourth electric valve (16) are closed; the drainage of the water circulation pump (25) enters the primary condensation heat exchanger (18) through the third electric valve (17), the drainage of the high-temperature condensation heat exchanger (12) enters the water cooling coil (33) through the second electric valve (8) after passing through the first check valve (15), the water cooling coil (33) is sprayed and cooled by the spraying part (36), and the cooled water is pumped away by the water circulation pump (25) to circulate in this way;
when the fluorine cold part is abnormal, the second electric valve (8) and the third electric valve (17) are closed, and the first electric valve (9) and the fourth electric valve (16) are opened; the water discharged by the water circulation pump (25) enters the water heat exchange coil (2) through the fourth electric valve (16) and the first electric valve (9) to exchange heat with hot air of the data center for cooling, then enters the water cooling coil (33) through the second check valve (3), the water cooling coil (33) is sprayed and cooled by the spraying part (36), and the cooled water is pumped away by the water circulation pump (25) for circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111433245.XA CN113993360B (en) | 2021-11-29 | 2021-11-29 | Energy-saving cooling system and method for data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111433245.XA CN113993360B (en) | 2021-11-29 | 2021-11-29 | Energy-saving cooling system and method for data center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113993360A CN113993360A (en) | 2022-01-28 |
| CN113993360B true CN113993360B (en) | 2023-11-03 |
Family
ID=79732492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111433245.XA Active CN113993360B (en) | 2021-11-29 | 2021-11-29 | Energy-saving cooling system and method for data center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113993360B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096012A (en) * | 2022-06-28 | 2022-09-23 | 鹏鸟科技(山东)有限公司 | Refrigerating system with gas-liquid relay |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040053696A (en) * | 2002-12-17 | 2004-06-24 | 엘지전자 주식회사 | Refrigerating system using two stage refrigerating cycle |
| KR20100101265A (en) * | 2009-03-09 | 2010-09-17 | 김봉석 | Refrigerating apparatus |
| KR101071409B1 (en) * | 2011-05-11 | 2011-10-07 | 문감사 | Hot water generating system using 2 step heat pump cycles |
| CN107014014A (en) * | 2017-04-20 | 2017-08-04 | 广东申菱环境系统股份有限公司 | A kind of heat pipe natural cooling evaporating type condensing cooling-water machine and its control method |
| CN210089039U (en) * | 2019-06-10 | 2020-02-18 | 克莱门特捷联制冷设备(上海)有限公司 | Air conditioning system for data center |
| CN210951666U (en) * | 2019-10-28 | 2020-07-07 | 青岛海尔空调电子有限公司 | Air conditioning system |
-
2021
- 2021-11-29 CN CN202111433245.XA patent/CN113993360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040053696A (en) * | 2002-12-17 | 2004-06-24 | 엘지전자 주식회사 | Refrigerating system using two stage refrigerating cycle |
| KR20100101265A (en) * | 2009-03-09 | 2010-09-17 | 김봉석 | Refrigerating apparatus |
| KR101071409B1 (en) * | 2011-05-11 | 2011-10-07 | 문감사 | Hot water generating system using 2 step heat pump cycles |
| CN107014014A (en) * | 2017-04-20 | 2017-08-04 | 广东申菱环境系统股份有限公司 | A kind of heat pipe natural cooling evaporating type condensing cooling-water machine and its control method |
| CN210089039U (en) * | 2019-06-10 | 2020-02-18 | 克莱门特捷联制冷设备(上海)有限公司 | Air conditioning system for data center |
| CN210951666U (en) * | 2019-10-28 | 2020-07-07 | 青岛海尔空调电子有限公司 | Air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113993360A (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112050490A (en) | Evaporative cooling centrifugal water chilling unit | |
| CN112097356A (en) | Fluorine pump type machine room air-cooled precision air conditioner | |
| CN108155439B (en) | Air conditioner battery cooling single cooling system and control method | |
| CN211625759U (en) | Cascade type air conditioner heat pump system | |
| CN111197874A (en) | Cascade type air conditioner heat pump system and control method thereof | |
| CN115289714B (en) | Evaporation condensation heat pump unit with hydraulic module and control method thereof | |
| CN113993360B (en) | Energy-saving cooling system and method for data center | |
| CN112146301B (en) | Evaporative cold screw cold and hot water unit with total heat recovery | |
| CN111649424A (en) | Heat pipe energy-saving type base station air conditioning unit | |
| CN215675897U (en) | Air conditioning system | |
| CN215529686U (en) | Cold water type cold station system | |
| CN213687346U (en) | Evaporation cold and hot pump unit | |
| CN114198872B (en) | Machine room air conditioner, operation control method and device of machine room air conditioner | |
| CN211926184U (en) | Heat pump system with dual functions of staged heating and enhanced vapor injection | |
| CN212657902U (en) | Evaporative cooling centrifugal water chilling unit | |
| CN213334753U (en) | Fluorine pump type machine room air-cooled precision air conditioner | |
| CN211822913U (en) | Air conditioning system for machine room | |
| CN211943310U (en) | Rail vehicle refrigerating system with fresh air precooling function | |
| CN112146302B (en) | Evaporation cold and hot pump unit | |
| CN221570829U (en) | Combined cycle heat pump unit | |
| CN215295184U (en) | Central air conditioning economizer system | |
| CN220801989U (en) | NMP recovery device for partially recovering low-temperature heat | |
| CN219693611U (en) | Military air conditioner refrigerating system capable of refrigerating in large temperature area | |
| CN221099023U (en) | Ultralow-temperature single-machine double-stage screw type heat pump system | |
| CN221483924U (en) | Low-temperature passive cooling device for energy storage equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |