CN114396672A - Composite evaporative cooling cold air unit for machine room cooling - Google Patents
Composite evaporative cooling cold air unit for machine room cooling Download PDFInfo
- Publication number
- CN114396672A CN114396672A CN202210047763.6A CN202210047763A CN114396672A CN 114396672 A CN114396672 A CN 114396672A CN 202210047763 A CN202210047763 A CN 202210047763A CN 114396672 A CN114396672 A CN 114396672A
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- air
- evaporation
- cooling
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- direct evaporation
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- 238000001816 cooling Methods 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 133
- 230000008020 evaporation Effects 0.000 claims abstract description 133
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000007921 spray Substances 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 abstract description 13
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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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
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a composite evaporative cooling cold air unit for machine room cooling, which comprises a direct evaporation section, a multi-stage indirect evaporation section, a cabinet and a refrigerating system, wherein a cold pool is arranged outside the cabinet, a circulating air duct is arranged around the cabinet and the cold pool, and the multi-stage indirect evaporation section is arranged between an air inlet and an air return opening of the air duct. This be used for compound evaporation cooling air-cooling unit of computer lab refrigerated can have four kinds of refrigeration modes, can use multistage indirect evaporation alone to carry out the heat transfer, uses direct evaporation cooling, direct evaporation and multistage indirect evaporation to use simultaneously, direct evaporation, multistage indirect evaporation and refrigerating system use etc. simultaneously. The different devices can be selectively opened according to outdoor meteorological conditions and indoor refrigeration loads to operate corresponding working modes, so that different indoor environment requirements are met, natural cooling brought by evaporative cooling is used to the greatest extent, energy is saved, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of novel energy-saving evaporative cooling air cooler units, in particular to a composite evaporative cooling air cooler unit for cooling a machine room.
Background
China is vast, the climate difference of different areas is large, compared with hot and humid climate in summer on the coast and hot and dry area in summer in northwest, the direct evaporative cooling and indirect evaporative cooling technology can be fully utilized to provide cold air for a data center machine room, and the existing air conditioning technology for preparing cold air by indirect evaporation is widely applied to the low-humidity environment in northwest.
In areas such as a data center machine room requiring a large refrigeration load, only indirect evaporative cooling can be used only in air-to-air heat exchange or indirect evaporation, so that a refrigeration system needs to be supplemented to meet the refrigeration requirement, only direct evaporation is used, the requirement of room air humidity cannot be met, and meanwhile, an airflow system of an original machine room needs to be changed.
In order to meet the requirement of machine room cooling, a natural cold source is fully utilized, direct evaporation and multi-stage indirect evaporation are combined with a refrigerating system, particularly multi-stage indirect evaporation is utilized, the temperature of the air outlet of the machine room after the return air is cooled is close to the temperature of the wet bulb of the air inlet working airflow, and the refrigerating system is started in hot summer to guarantee the cooling effect.
At present, direct evaporation, indirect evaporation or machine room air conditioners exist in the market, and no air conditioning unit for producing cold air by composite evaporative cooling completely aiming at machine room cooling exists.
Disclosure of Invention
The invention aims to provide a composite evaporative cooling cold air unit for cooling a machine room, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a composite evaporative cooling cold air unit for machine room cooling comprises a direct evaporation section, a multi-stage indirect evaporation section, a cabinet and a refrigerating system, wherein a cold pool is arranged on the outer side of the cabinet, a circulating air duct is arranged around the cabinet and the cold pool, a pre-cooling coil is arranged at an air return port of the air duct, the direct evaporation section is arranged on the outer side of the air duct, and condensed water obtained by the direct evaporation section is communicated with the pre-cooling coil; the multistage indirect evaporation section is arranged between an air inlet and an air return inlet of the air duct.
Preferably, the wind channel includes supply air duct, ground air feed groove, return air ceiling and return air duct, supply air duct's air intake department is provided with the forced draught blower, air duct and ground air feed groove intercommunication, ground air feed groove and cold pond bottom intercommunication, the top and the return air ceiling intercommunication in cold pond, return air ceiling and return air duct intercommunication.
Preferably, the direct evaporation section comprises a direct evaporation air inlet, a direct evaporation core, a finned condenser, a direct evaporation spray row, a direct evaporation fan, a direct evaporation air outlet, a water replenishing electromagnetic valve, a direct evaporation water tank and a circulating pump; the direct evaporation water tank is communicated with the precooling coil pipe through a direct evaporation pipeline, and the direct evaporation pipeline is communicated with the circulating pump.
Preferably, the multistage indirect evaporation section comprises a water inlet electromagnetic valve, a multistage evaporation core body, an indirect evaporation spray row, an indirect evaporation fan, an indirect evaporation water tank, an indirect evaporation air outlet and an indirect evaporation air inlet; the indirect evaporation air outlet is communicated with an air return pipeline, the air return inlet is communicated with an air supply outlet through a multi-stage evaporation core, and a finned evaporator is arranged on the front side of the air supply outlet.
Compared with the prior art, the invention has the beneficial effects that: this be used for compound evaporation cooling air-cooling unit of computer lab refrigerated can have four kinds of refrigeration modes, can use multistage indirect evaporation alone to carry out the heat transfer, uses direct evaporation cooling, direct evaporation and multistage indirect evaporation to use simultaneously, direct evaporation, multistage indirect evaporation and refrigerating system use etc. simultaneously. The different devices can be selectively opened according to outdoor meteorological conditions and indoor refrigeration loads to operate corresponding working modes, so that different indoor environment requirements are met, natural cooling brought by evaporative cooling is used to the greatest extent, energy is saved, and the practicability is high.
Drawings
FIG. 1 is a schematic overall structure of a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a direct evaporation apparatus according to a preferred embodiment of the present invention.
In the figure: 1. the system comprises a direct evaporation air inlet, a direct evaporation core body, a 3, a finned condenser, a 4, a direct evaporation spray row, a 5, a direct evaporation fan, a 6, a direct evaporation air outlet, a 7, a water replenishing electromagnetic valve, a 8, a direct evaporation water tank, a 9, a circulating pump, a 10, a direct evaporation pipeline, a 11, an indirect evaporation air inlet, a 12, a filter, a 13, a precooling coil, a 14, an air return inlet, a 15, an air return pipeline, a 16, an indirect evaporation air outlet, a 17, an indirect evaporation fan, a 18, a cold water spray row, a 19, a multistage evaporation core body, a 20, a finned evaporator, a 21, a blower, a 22, an air supply outlet, a 23, a compressor, a 24, an expansion valve, a 25, a drying filter, a 26, an indirect evaporation water tank, a 27, a water inlet electromagnetic valve, a 28, an air supply pipeline, a 29, a ground air supply groove, a 30, a cabinet, a 31, a cold pool, a 32 and a return air ceiling.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
a composite evaporative cooling cold air unit for machine room cooling comprises a direct evaporation section, a multi-stage indirect evaporation section, an air supply section, a refrigeration system, a data center machine room air supply and return system and a cabinet 31.
The data center computer room includes: the data center machine room is characterized by comprising a ground air supply outlet 29, a cold pool 31, a machine cabinet 30 and a return air ceiling 32, wherein air is supplied from the bottom through the ground air supply outlet 29, enters the cold pool 31, cools the machine cabinet 30 and then enters the return air pipeline 15 through the return air ceiling 32.
A cold pool 31 is arranged on the outer side of the cabinet 30, a circulating air channel is arranged around the cabinet 30 and the cold pool 31, a pre-cooling coil 13 is arranged at an air return port of the air channel, a direct evaporation section is arranged on the outer side of the air channel, and condensed water obtained by the direct evaporation section is communicated with the pre-cooling coil 13; the multistage indirect evaporation section is arranged between the air inlet and the air return inlet of the air duct.
The direct evaporation section utilizes air natural condition evaporative cooling, the obtained high-temperature cold water is used for precooling machine room return air, the fresh air is used as working air flow in the multistage indirect evaporation section and is used for carrying out secondary cooling on the return air in the data center machine room, and the refrigerating system is used as an auxiliary cooling means and is used for carrying out refrigeration and cooling when the direct evaporation and the multistage indirect evaporation are used in a high-humidity environment.
The direct evaporation section is directly connected with the outside and has air inlet and air exhaust. Cold water generated by evaporative cooling in a natural environment enters the pre-cooling coil 13 under the action of the circulating pump 9 and is used for pre-cooling return air of the machine room.
And the multi-stage indirect evaporation section is communicated with the air supply section and is used for cooling the precooled return air again and sending the cooled return air to an air supply pipe in a data center machine room.
The direct evaporation section comprises: the direct evaporation type air conditioner comprises a direct evaporation air inlet 1, a direct evaporation air outlet 6, a direct evaporation fan 5, a finned condenser 3, a direct evaporation core body 2, a direct evaporation water tank 8, a circulating pump 9, a water replenishing electromagnetic valve 7 and a direct evaporation spray row 4.
The direct evaporation water tank 8 is communicated with the pre-cooling coil 13 through a direct evaporation pipeline 10, and the direct evaporation pipeline 10 is communicated with the circulating pump 9. The other end of the pre-cooling coil 13 is communicated with the direct evaporation spray row 4.
Tap water enters the direct evaporation water tank 8 through the water replenishing electromagnetic valve 7, water in the direct evaporation water tank 8 passes through the precooling heat exchanger 13 under the action of the circulating pump 9, is sprayed on the direct evaporation core body 2 through the direct evaporation spray rows 4, and performs heat and humidity exchange with outdoor air from the air inlet 1, after the tap water is evaporated and cooled, the unevaporated tap water is cooled and then falls into the direct evaporation water tank 8, and the circulation can realize precooling of return air of a machine room. After absorbing the water vapor directly evaporated, the intake air is discharged from the direct evaporation air outlet 6 through the finned condenser 3 under the action of the direct evaporation fan 5.
The multistage indirect evaporation section comprises: the device comprises a water inlet electromagnetic valve 27, a multi-stage evaporation core body 19, an indirect evaporation spray row 18, an indirect evaporation fan 17, an indirect evaporation water tank 26, an indirect evaporation air outlet 16 and an indirect evaporation air inlet 11, wherein a filter 12 is arranged on the inner side of the indirect evaporation air inlet 11, and the filter 12 is used for filtering air.
The indirect evaporation air outlet 16 is communicated with an air return pipeline 15, the air return inlet 14 is communicated with an air supply outlet 22 through a multi-stage evaporation core body 19, and a finned evaporator 20 is arranged on the front side of the air supply outlet 22.
Outdoor air is taken as working air flow after entering air from the indirect evaporation air inlet 11, tap water from the cold water spray row 18 evaporates and absorbs the temperature of the working air flow after the water inlet electromagnetic valve 27 is opened discontinuously, and the working air flow is cooled and discharged from the indirect evaporation air outlet 16 through the indirect evaporation fan 17.
The air supply section includes: a precooling heat exchanger 13, a finned evaporator 20 of a refrigeration system, a blower 21 and a blower outlet 22.
Under the action of the blower 21, return air enters the air supply section from the return air pipeline 15 through the return air inlet 14, is pre-cooled through the pre-cooling heat exchanger 13, enters the indoor airflow side of the multistage indirect evaporation core 19 for dehumidification and cooling, and then passes through the refrigeration finned evaporator 20, and then is delivered into the data center machine room through the air supply pipeline 28.
The refrigeration system includes: the compressor 23, the finned evaporator 20, the finned condenser 3, the drying filter 25, the expansion valve 24 and the like form a complete refrigeration cycle loop.
The direct evaporation core 2 and the multi-stage indirect evaporation core 19 are all formed by alternately stacking PVC sheets and high-strength anticorrosive flame-retardant corrugated paperboard sheets, the sheet spacing is designed to be 2.0mm, 3.0mm, 4.0mm or 5.0mm, and the sheets are cubes or cuboids.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a compound evaporation cooling cold air unit for computer lab refrigerated, includes direct evaporation section, multistage indirect evaporation section, rack, refrigerating system, its characterized in that: a cold pool (31) is arranged on the outer side of the cabinet (30), a circulating air duct is arranged around the cabinet (30) and the cold pool (31), a pre-cooling coil (13) is arranged at an air return opening of the air duct, the direct evaporation section is arranged on the outer side of the air duct, and condensed water obtained by the direct evaporation section is communicated with the pre-cooling coil (13); the multistage indirect evaporation section is arranged between an air inlet and an air return inlet of the air duct.
2. The composite evaporative cooling cold air unit for machine room cooling according to claim 1, characterized in that: the wind channel includes supply air duct (28), ground air feed groove (29), return air ceiling (32) and return air duct (15), the air intake department of supply air duct (28) is provided with forced draught blower (21), air duct (28) and ground air feed groove (29) intercommunication, ground air feed groove (29) and cold pond (31) bottom intercommunication, the top and return air ceiling (32) intercommunication in cold pond (31), return air ceiling (32) and return air duct (15) intercommunication.
3. The composite evaporative cooling cold air unit for machine room cooling according to claim 1, characterized in that: the direct evaporation section comprises a direct evaporation air inlet (1), a direct evaporation core body (2), a finned condenser (3), a direct evaporation spray row (4), a direct evaporation fan (5), a direct evaporation air outlet (6), a water replenishing electromagnetic valve (7), a direct evaporation water tank (8) and a circulating pump (9);
the direct evaporation water tank (8) is communicated with the precooling coil (13) through a direct evaporation pipeline (10), and the direct evaporation pipeline (10) is communicated with the circulating pump (9).
4. The composite evaporative cooling cold air unit for machine room cooling according to claim 1, characterized in that: the multi-stage indirect evaporation section comprises a water inlet electromagnetic valve (27), a multi-stage evaporation core body (19), an indirect evaporation spray row (18), an indirect evaporation fan (17), an indirect evaporation water tank (26), an indirect evaporation air outlet (16) and an indirect evaporation air inlet (11);
the indirect evaporation exhaust outlet (16) is communicated with an air return pipeline (15), the air return inlet (14) is communicated with an air supply outlet (22) through a multi-stage evaporation core body (19), and a finned evaporator (20) is arranged on the front side of the air supply outlet (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047763.6A CN114396672A (en) | 2022-01-17 | 2022-01-17 | Composite evaporative cooling cold air unit for machine room cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047763.6A CN114396672A (en) | 2022-01-17 | 2022-01-17 | Composite evaporative cooling cold air unit for machine room cooling |
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| CN114396672A true CN114396672A (en) | 2022-04-26 |
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| CN202210047763.6A Pending CN114396672A (en) | 2022-01-17 | 2022-01-17 | Composite evaporative cooling cold air unit for machine room cooling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508807A (en) * | 2022-02-28 | 2022-05-17 | 沈阳澳蓝节能科技有限公司 | Multi-stage indirect evaporation composite cold air unit based on fresh air dehumidification |
| CN114674045A (en) * | 2022-05-10 | 2022-06-28 | 沈阳澳蓝节能科技有限公司 | Indirect evaporation air-conditioning system based on solution dehumidification for data center |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508807A (en) * | 2022-02-28 | 2022-05-17 | 沈阳澳蓝节能科技有限公司 | Multi-stage indirect evaporation composite cold air unit based on fresh air dehumidification |
| CN114674045A (en) * | 2022-05-10 | 2022-06-28 | 沈阳澳蓝节能科技有限公司 | Indirect evaporation air-conditioning system based on solution dehumidification for data center |
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