CN113784588A - System and control method for data center dehumidification waste heat recovery - Google Patents
System and control method for data center dehumidification waste heat recovery Download PDFInfo
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- CN113784588A CN113784588A CN202111010383.7A CN202111010383A CN113784588A CN 113784588 A CN113784588 A CN 113784588A CN 202111010383 A CN202111010383 A CN 202111010383A CN 113784588 A CN113784588 A CN 113784588A
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 81
- 238000011084 recovery Methods 0.000 title claims abstract description 50
- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims description 34
- 239000003507 refrigerant Substances 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 18
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052731 fluorine Inorganic materials 0.000 abstract description 2
- 239000011737 fluorine Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
Abstract
The invention provides a system and a control method for data center dehumidification waste heat recovery, wherein the system comprises a cooling dehumidification module, a power control module and a heat recovery regeneration module; the second fan of the cooling and dehumidifying module blows the concentrated hot return air of the data center into the box body, the temperature is reduced through the evaporator, and the solution in the first liquid tank is sprayed through the third spraying device to enable the air of the data center to be dehumidified for the first time; the primary dehumidified air is subjected to secondary dehumidification and then discharged out of the data center; the first fan of the heat recovery regeneration module blows outdoor air into the box body, the solution from the cooling and dehumidifying module after secondary dehumidification is subjected to secondary temperature rise after primary temperature rise, and then is discharged outdoors; the power control module includes a compressor to power the fluorine cooling. Based on the system, a method for data center dehumidification waste heat recovery is also provided. The invention adopts an integrated system design, integrally designs the waste heat recovery, the quick dehumidification and the conventional cooling dehumidification, and has higher system integration level.
Description
Technical Field
The invention belongs to the technical field of data center dehumidification, and particularly relates to a system and a control method for data center dehumidification waste heat recovery.
Background
With the rapid development of the electronic information industry, the development of data centers is also entering a new stage. The reliability of the air conditioning system directly affects the security of the data center. Excessive moisture in a data center can cause changes in the physical and chemical properties of the material or equipment. When the data center is exposed to a humid environment for a long time, the equipment will absorb moisture from the corrosive gas in the atmosphere, so that the corrosion of the equipment is accelerated. If the humidity is too high, moisture can adhere to the surfaces of the equipment components, which can lead to the reduction of the working performance of the circuits in the machine and even the occurrence of short circuits and the burning of certain components. More seriously, if the server of the data center sucks in the wet air, the metal parts of the disk drive may rust and be damaged, and the insulating performance of the printed circuit board may be deteriorated accordingly.
Compared with other seasons, the rain water is more in summer, the humidity of the air is increased, and the change of the weather has non-negligible influence on the equipment of the data center. Generally, when the equipment of the data center is operated, the optimal humidity range of the use environment is required to be 45% -60%, and the maximum allowable range of the humidity range should not exceed 35% -80%. Therefore, how the data center air conditioning system can dehumidify fast makes the humidity in the computer lab inject in reasonable within range, has the significance to the safety and the operational reliability of data center equipment, and traditional dehumidification mode is for evaporimeter cooling dehumidification, but when external humidity is higher, under the condition of rainfall in succession, the dehumidification demand of the big amount of wind of data center can not be satisfied in the dehumidification of simple evaporimeter.
Disclosure of Invention
In order to solve the technical problem, the invention provides a system and a control method for data center dehumidification waste heat recovery. The waste heat recovery, quick dehumidification and conventional cooling dehumidification are integrally designed, and the system integration level is higher.
In order to achieve the purpose, the invention adopts the following technical scheme:
a system for data center dehumidification waste heat recovery comprises a cooling dehumidification module, a power control module and a heat recovery regeneration module;
the cooling and dehumidifying module comprises a second fan, an evaporator, a third spraying device positioned right above the evaporator, a second filler, a fourth spraying device positioned right above the second filler, a first liquid tank and a first heat exchanger; the first liquid tank is connected with a third spraying device through a first solution pump; the second fan blows hot return air from the data center into the box body, the temperature is reduced through the evaporator, and the solution in the first liquid tank is sprayed through the third spraying device under the action of the first solution pump to enable the air in the data center to be subjected to primary dehumidification; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device for secondary dehumidification, and then is discharged out of the data center through a first heat exchanger;
the heat recovery and regeneration module comprises a first fan, a condenser, a first spraying device positioned right above the condenser, a first filler, a second spraying device positioned right above the first filler, a second liquid tank and a second heat exchanger; the first fan blows outdoor air into the box body, and the solution from the cooling and dehumidifying module after secondary dehumidification is sprayed by the first spraying device and heated by the condenser to enable the air to be heated for the first time; after primary heating, the air is subjected to secondary heating under the action of the first filler and the second spraying device, and then the outdoor air is discharged through the second heat exchanger;
the power control module includes a compressor; the compressor is respectively connected with the condenser and the evaporator and used for discharging high-temperature and high-pressure gaseous refrigerant to enter the condenser, the gaseous refrigerant passes through the condenser and then is discharged through the first heat exchanger in one path, and the gaseous refrigerant passes through the evaporator in the other path and is gasified and then returns to the compressor.
Further, the first liquid tank and the second liquid tank are connected through a third solution pump; and the third solution pump is used for conveying the solution in the second liquid tank to the first liquid tank.
Further, the cooling and dehumidifying module further comprises a first collecting groove; the first collecting groove is positioned right below the second filler and is used for collecting the solution sprayed by the fourth spraying device;
the first collecting tank is also connected with a first spraying device through a second solution pump; and the collected solution sprayed by the fourth spraying device is used as the incoming liquid of the first spraying device.
Further, the heat recovery regeneration module comprises a second collecting groove; and the second collecting groove is positioned under the first filler and is used for collecting the solution sprayed by the second spraying device.
Furthermore, the lower part of the second collecting groove is a second liquid groove, and the bottom of the second collecting groove is provided with a plurality of small holes for enabling the liquid in the second collecting groove to flow into the first liquid groove.
Further, the first heat exchanger adopts a sleeve fin heat exchanger and is used for heating air when the temperature of the evaporative cooling air is lower than a set temperature.
Further, the solution in the first liquid tank is a lithium bromide solution.
Further, the solution at the bottom of the third spraying device is used as the incoming solution of the fourth spraying device through a second secondary pump.
Further, the solution at the bottom of the first spraying device is used as the incoming liquid of the second spraying device through the first secondary pump.
The invention also provides a control method for data center dehumidification waste heat recovery, which is realized based on a system for data center dehumidification waste heat recovery and comprises the following steps:
when the relative humidity of the inlet air of the data center is higher than a first humidity threshold value, controlling a third spraying device to spray so that the air of the data center is dehumidified for one time; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device to perform secondary dehumidification; when the relative humidity of the inlet air of the data center is lower than a first humidity threshold value, the third spraying device and the fourth spraying device are closed, and only an evaporator is adopted for cooling and dehumidifying;
when the temperature of the air cooled by the evaporator is lower than a first temperature threshold value, the temperature of the air is raised to a set temperature through the double-pipe fin heat exchanger, and a refrigerant subjected to heat exchange by the double-pipe fin heat exchanger enters the evaporator again; when the temperature of the air cooled by the evaporator is higher than a first temperature threshold value, the refrigerant directly enters the evaporator.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the invention provides a system and a control method for data center dehumidification waste heat recovery, wherein the system comprises a cooling dehumidification module, a power control module and a heat recovery regeneration module; the cooling and dehumidifying module comprises a second fan, an evaporator, a third spraying device positioned right above the evaporator, a second filler, a fourth spraying device positioned right above the second filler, a first liquid tank and a first heat exchanger; the first liquid tank is connected with a third spraying device through a first solution pump; the second fan blows the concentrated hot return air from the data center into the box body, the temperature is reduced through the evaporator, and the solution in the first liquid tank is sprayed through the third spraying device under the action of the first solution pump to enable the air in the data center to be subjected to primary dehumidification; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device for secondary dehumidification, and then is discharged out of the data center through a first heat exchanger; the heat recovery and regeneration module comprises a first fan, a condenser, a first spraying device positioned right above the condenser, a first filler, a second spraying device positioned right above the first filler, a second liquid tank and a second heat exchanger; the first fan blows outdoor air into the box body, and the solution from the cooling and dehumidifying module after secondary dehumidification is sprayed by the first spraying device and heated by the condenser to enable the air to be heated for the first time; after primary heating, the air is subjected to secondary heating under the action of the first filler and the second spraying device, and then the outdoor air is discharged through the second heat exchanger; the power control module includes a compressor; the compressor is respectively connected with the condenser and the evaporator and used for discharging high-temperature and high-pressure gaseous refrigerant to enter the condenser, the gaseous refrigerant passes through the condenser and then is discharged through the first heat exchanger in one path, and the gaseous refrigerant passes through the evaporator in the other path and is gasified and then returns to the compressor. Based on the system for data center dehumidification waste heat recovery, the invention also provides a control method for data center dehumidification waste heat recovery. The invention adopts an integrated system design, integrally designs the waste heat recovery, the quick dehumidification and the conventional cooling dehumidification, has higher system integration level, is suitable for centralized air treatment of a data center, is more reliable, can improve the application scene of the system and improves the product competitiveness.
The first liquid tank and the second liquid tank are connected through a third solution pump; and the third solution pump is used for conveying the solution in the second liquid tank to the first liquid tank. The solution for cooling and dehumidifying and the solution for heat recovery are recycled, and the utilization effect of the solution is improved.
Drawings
Fig. 1 is a schematic diagram of a system for recovering dehumidification waste heat of a data center according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a control method for data center dehumidification waste heat recovery according to embodiment 2 of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
Example 1
Embodiment 1 of the present invention provides a system for data center dehumidification waste heat recovery, and fig. 1 is a schematic diagram of a system for data center dehumidification waste heat recovery according to embodiment 1 of the present invention. The system includes a cooling dehumidification module, a power control module, and a heat recovery regeneration module.
The cooling and dehumidifying module comprises a data center air inlet, a data center air outlet, a second fan, an evaporator, a third spraying device positioned right above the evaporator, a second filler, a fourth spraying device positioned right above the second filler, a first liquid tank and a first heat exchanger; also includes a first collecting groove.
The first liquid tank is connected with a third spraying device through a first solution pump; the second fan blows the concentrated hot return air from the data center into the box body, the temperature is reduced through the evaporator, and the solution in the first liquid tank is sprayed through the third spraying device under the action of the first solution pump to enable the air in the data center to be subjected to primary dehumidification; the air subjected to primary dehumidification is sprayed by the second filler and the fourth spraying device to be subjected to secondary dehumidification, and then is discharged out of the data center through the first heat exchanger.
The concentrated hot return air in the first liquid tank enters the box body under the action of the second fan at the air inlet, and is cooled in the evaporator, the concentrated solution in the first liquid tank is sprayed by the third spraying device under the action of the first solution pump, moisture in the air is transferred from the air to the solution, the air is dehumidified for the first time, and the evaporator is subjected to heat exchange enhancement under the action of the spraying solution; secondly, the air subjected to primary cooling and dehumidification is subjected to secondary dehumidification under the action of a second filler and a fourth spraying device, and the air subjected to cooling and dehumidification enters the data center again through the air outlet of the data center after passing through the sleeve fin heat exchanger; the liquid coming from the fourth spraying device is the cooling liquid after the previous stage of dehumidification, the second-stage pump provides power, and the lithium bromide concentrated solution absorbs water in the air and then enters the first collecting groove to be collected;
the sleeve fin heat exchanger is mainly used for heating air through the sleeve fin heat exchanger when the temperature of evaporative cooling air is lower than a set temperature so as to meet the air supply requirement of a data center.
The heat recovery and regeneration module comprises an outdoor air inlet, an outdoor air outlet, a first fan, a condenser, a first spraying device positioned right above the condenser, a first filler, a second spraying device positioned right above the first filler, a second liquid tank and a second heat exchanger; also comprises a second collecting groove
The first fan blows outdoor air into the box body, and the solution from the cooling and dehumidifying module after secondary dehumidification is sprayed by the first spraying device and heated by the condenser to enable the air to be heated for the first time; after primary heating, the air is subjected to secondary heating under the action of the first filler and the second spraying device, and then the outdoor air is discharged through the second heat exchanger;
the second liquid tank is filled with a regenerated lithium bromide concentrated solution, outdoor air enters the box body under the action of the first fan at the air inlet, the outdoor air is cooled and heated in the condenser, the dilute solution from the second collection tank of the cooling and dehumidifying module is sprayed by the first spraying device under the action of the second solution pump and is heated by the condenser, moisture in the air is transferred from the solution to the air, the air after primary temperature rise is subjected to secondary sufficient heat exchange under the action of the first filler and the second spraying device, and the treated air is discharged through the air outlet after passing through the heat recovery heat exchanger; the liquid coming from the second spraying device is the cooling liquid regenerated by the previous stage, the power is provided by the first secondary pump, and the moisture in the lithium bromide solution is continuously discharged along with the air in the hot air contact process of the lithium bromide solution, and the lithium bromide solution enters the second collecting tank to be collected after being sprayed; a plurality of small holes are formed between the second collecting tank and the second liquid tank, and the concentrated solution in the second collecting tank can enter the second liquid tank for storage; the second liquid bath is located directly below the second collection bath as described in fig. 1.
The power control module comprises a compressor, an electrical control box body, a compressor, a second solution pump and a third solution pump; the compressor is respectively connected with the condenser and the evaporator and used for discharging high-temperature and high-pressure gaseous refrigerant to enter the condenser, the gaseous refrigerant passes through the condenser and then is discharged through the first heat exchanger in one path, and the gaseous refrigerant passes through the evaporator in the other path and is gasified and then returns to the compressor.
The third solution pump is responsible for conveying the regenerated concentrated solution in the second liquid tank into the first liquid tank, and continuously circulating the concentrated solution for dehumidifying air in the data center; the compressor provides power for the whole fluorine cooling system, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor enters the condenser, one path of the condensed refrigerant enters the sleeve fin heat exchanger through the first electromagnetic valve, the other path of the condensed refrigerant enters the evaporator to absorb heat and cool the data center for returning air after passing through the second electromagnetic valve and the expansion valve, the refrigerant absorbing heat and gasified in the evaporator returns to the compressor again, and the process is repeated.
When the relative humidity of inlet air of the data center is higher than a first humidity threshold value, a third spraying device is controlled to spray to enable the air of the data center to be dehumidified for one time; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device to perform secondary dehumidification; and when the relative humidity of the inlet air of the data center is lower than a first humidity threshold value, the third spraying device and the fourth spraying device are closed, and only the evaporator is adopted for cooling and dehumidifying. The first humidity threshold in the present invention is 75%. The protection scope of the present invention is not limited to the humidity threshold listed in example 1, and the worker in the art can set the humidity threshold accordingly according to practical situations.
When the temperature of the air cooled by the evaporator is lower than a first temperature threshold value, the temperature of the air is raised to a set temperature through the double-pipe fin heat exchanger, and a refrigerant subjected to heat exchange by the double-pipe fin heat exchanger enters the evaporator again; when the temperature of the air cooled by the evaporator is higher than a first temperature threshold value, the refrigerant directly enters the evaporator. The first temperature threshold in the present invention is 20 ℃, the protection scope of the present invention is not limited to the temperature threshold listed in example 1, and workers in the field can set the temperature threshold accordingly according to actual situations.
The heat recovery regeneration module can recover system waste heat and provide hot water, tap water enters the sleeve fin heat exchanger, when the first electromagnetic valve is opened, condensation waste heat is recovered, then the condensation waste heat enters the heat recovery heat exchanger to recover hot air waste heat, and then the hot air waste heat is output to provide hot water.
Example 2
Based on the system for data center dehumidification waste heat recovery provided by the embodiment 1 of the invention, the embodiment 2 of the invention also provides a control method for data center dehumidification waste heat recovery. The method is realized on the basis of the system for data center dehumidification waste heat recovery provided by the embodiment 1. Fig. 2 is a flowchart of a control method for data center dehumidification waste heat recovery according to embodiment 2 of the present invention.
In step S201, when the relative humidity of the inlet air of the data center is higher than a first humidity threshold, controlling a third spraying device to spray so as to dehumidify the air of the data center for one time; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device to perform secondary dehumidification; and when the relative humidity of the inlet air of the data center is lower than a first humidity threshold value, the third spraying device and the fourth spraying device are closed, and only the evaporator is adopted for cooling and dehumidifying. The first humidity threshold in the present invention is 75%. The protection scope of the present invention is not limited to the humidity threshold listed in example 1, and the worker in the art can set the humidity threshold accordingly according to practical situations.
Namely: when the relative humidity of the inlet air of the data center is higher than 75%, starting a lithium bromide solution spraying dehumidification mode;
when the relative humidity of the inlet air of the data center is lower than 75%, the lithium bromide solution is closed to spray and dehumidify, and only the evaporator is adopted to cool and dehumidify
In step S202, when the temperature of the air cooled by the evaporator is lower than a first temperature threshold, the temperature of the air is raised to a set temperature by the double-pipe fin heat exchanger, and the refrigerant after heat exchange by the double-pipe fin heat exchanger enters the evaporator again; when the temperature of the air cooled by the evaporator is higher than a first temperature threshold value, the refrigerant directly enters the evaporator. The first temperature threshold in the present invention is 20 ℃, the protection scope of the present invention is not limited to the temperature threshold listed in example 1, and workers in the field can set the temperature threshold accordingly according to actual situations.
Namely: when the temperature of the air cooled by the evaporator is lower than 20 ℃, the electromagnetic valve is firstly opened, the temperature of the air is raised to a set temperature through the sleeve fin heat exchanger, and a refrigerant after heat exchange of the sleeve fin heat exchanger enters the evaporator through the one-way valve and then the expansion valve;
when the temperature of the air cooled by the evaporator is higher than 20 ℃, the first electromagnetic valve is closed, the second electromagnetic valve is opened, and the refrigerant directly enters the evaporator through the expansion valve.
The invention adopts an integrated system design, integrally designs the waste heat recovery, the quick dehumidification and the conventional cooling dehumidification, has higher system integration level, is suitable for centralized air treatment of a data center, is more reliable, can improve the application scene of the system and improves the product competitiveness.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the invention.
Claims (10)
1. A system for data center dehumidification waste heat recovery is characterized by comprising a cooling dehumidification module, a power control module and a heat recovery regeneration module;
the cooling and dehumidifying module comprises a second fan, an evaporator, a third spraying device positioned right above the evaporator, a second filler, a fourth spraying device positioned right above the second filler, a first liquid tank and a first heat exchanger; the first liquid tank is connected with a third spraying device through a first solution pump; the second fan blows hot return air from the data center into the box body, the temperature is reduced through the evaporator, and the solution in the first liquid tank is sprayed through the third spraying device under the action of the first solution pump to enable the air in the data center to be subjected to primary dehumidification; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device for secondary dehumidification, and then is discharged out of the data center through a first heat exchanger;
the heat recovery and regeneration module comprises a first fan, a condenser, a first spraying device positioned right above the condenser, a first filler, a second spraying device positioned right above the first filler, a second liquid tank and a second heat exchanger; the first fan blows outdoor air into the box body, and the solution from the cooling and dehumidifying module after secondary dehumidification is sprayed by the first spraying device and heated by the condenser to enable the air to be heated for the first time; after primary heating, the air is subjected to secondary heating under the action of the first filler and the second spraying device, and then the outdoor air is discharged through the second heat exchanger;
the power control module includes a compressor; the compressor is respectively connected with the condenser and the evaporator and used for discharging high-temperature and high-pressure gaseous refrigerant to enter the condenser, the gaseous refrigerant passes through the condenser and then is discharged through the first heat exchanger in one path, and the gaseous refrigerant passes through the evaporator in the other path and is gasified and then returns to the compressor.
2. The system for data center dehumidification waste heat recovery according to claim 1, wherein the first liquid tank and the second liquid tank are connected through a third solution pump; and the third solution pump is used for conveying the solution in the second liquid tank to the first liquid tank.
3. The system for data center dehumidification waste heat recovery of claim 1, wherein the cooling dehumidification module further comprises a first collection tank; the first collecting groove is positioned right below the second filler and is used for collecting the solution sprayed by the fourth spraying device;
the first collecting tank is also connected with a first spraying device through a second solution pump; and the collected solution sprayed by the fourth spraying device is used as the incoming liquid of the first spraying device.
4. The system for data center dehumidification waste heat recovery of claim 1, wherein the heat recovery regeneration module comprises a second collection tank; and the second collecting groove is positioned under the first filler and is used for collecting the solution sprayed by the second spraying device.
5. The system for data center dehumidification waste heat recovery according to claim 4, wherein the bottom of the second collection tank is a second liquid tank, and a plurality of small holes are formed in the bottom of the second collection tank for enabling the second collection tank to flow into the first liquid tank.
6. The system for data center dehumidification waste heat recovery of claim 1, wherein the first heat exchanger is a double-pipe fin heat exchanger for warming air when the evaporative cooling air temperature is lower than a set temperature.
7. The system for data center dehumidification waste heat recovery of claim 1, wherein the solution in the first liquid tank is a lithium bromide solution.
8. The system for data center dehumidification waste heat recovery of claim 1, wherein the solution at the bottom of the third spray device is used as the incoming solution of the fourth spray device through a second secondary pump.
9. The system for data center dehumidification waste heat recovery of claim 1, wherein the solution at the bottom of the first spray device is used as the incoming solution of the second spray device through a first secondary pump.
10. A control method for data center dehumidification waste heat recovery is implemented based on the system for data center dehumidification waste heat recovery of any one of claims 1 to 9, and is characterized by comprising the following steps:
when the relative humidity of the inlet air of the data center is higher than a first humidity threshold value, controlling a third spraying device to spray so that the air of the data center is dehumidified for one time; the air subjected to primary dehumidification is sprayed by a second filler and a fourth spraying device to perform secondary dehumidification; when the relative humidity of the inlet air of the data center is lower than a first humidity threshold value, the third spraying device and the fourth spraying device are closed, and only an evaporator is adopted for cooling and dehumidifying;
when the temperature of the air cooled by the evaporator is lower than a first temperature threshold value, the temperature of the air is raised to a set temperature through the double-pipe fin heat exchanger, and a refrigerant subjected to heat exchange by the double-pipe fin heat exchanger enters the evaporator again; when the temperature of the air cooled by the evaporator is higher than a first temperature threshold value, the refrigerant directly enters the evaporator.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116916634A (en) * | 2023-09-11 | 2023-10-20 | 四川川西数据产业有限公司 | Heat energy recovery system and method for data center |
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| CN101846369A (en) * | 2010-05-12 | 2010-09-29 | 清华大学 | Heat recovery solution dehumidifying fresh air handling unit |
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| CN109798624A (en) * | 2019-01-25 | 2019-05-24 | 重庆大学 | Indirect evaporation internally cooled heat-pump-type solution fresh air dehumidification device |
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| CN101876469A (en) * | 2009-11-26 | 2010-11-03 | 佛山市浩特普尔人工环境设备有限公司 | Heat pump coupling contraflow type liquid-desiccant central ventilation system and control method thereof |
| CN101846369A (en) * | 2010-05-12 | 2010-09-29 | 清华大学 | Heat recovery solution dehumidifying fresh air handling unit |
| CN109798624A (en) * | 2019-01-25 | 2019-05-24 | 重庆大学 | Indirect evaporation internally cooled heat-pump-type solution fresh air dehumidification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116916634A (en) * | 2023-09-11 | 2023-10-20 | 四川川西数据产业有限公司 | Heat energy recovery system and method for data center |
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