CN210463393U - Indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for data center - Google Patents
Indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for data center Download PDFInfo
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- CN210463393U CN210463393U CN201921369353.3U CN201921369353U CN210463393U CN 210463393 U CN210463393 U CN 210463393U CN 201921369353 U CN201921369353 U CN 201921369353U CN 210463393 U CN210463393 U CN 210463393U
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Abstract
The utility model discloses an indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for a data center, which comprises a shell, wherein a primary air channel and a secondary air channel which are crossed are arranged in the shell; the primary air channel comprises a primary air inlet and a primary air supply outlet which are arranged on two opposite sides of the shell, and a filter a, an indirect evaporative cooling module, a direct evaporative cooling module, an evaporator and a primary air feeder are sequentially arranged in the primary air inlet according to the air flowing direction; the evaporator is connected with the thermostatic expansion valve, the compressor and the condenser in sequence through a refrigerant pipeline to form a closed pipeline. The utility model discloses compound air conditioning unit is through combining direct evaporative cooling, indirect evaporative cooling, mechanical refrigeration organically, to the operation of rationally switching under the different work condition to reach the requirement that satisfies the data center humiture, reduced the waste of energy simultaneously as far as, abundant utilization outdoor natural cold source has also enlarged evaporative cooling technique application form and application range.
Description
Technical Field
The utility model belongs to the technical field of air conditioning equipment, concretely relates to be suitable for indirect evaporative cooling and mechanical refrigeration composite air conditioning unit of data center.
Background
In the huge power consumption of data center, nearly half by fan, air conditioner refrigeration production, improve cooling efficiency, reduce the refrigeration energy consumption by a wide margin, just can accomplish to practice thrift data center operation cost, consequently, provide a set of high-efficient intelligent cooling scheme and also become the focus of the concern in the data center industry.
In order to reduce the high energy consumption of data centers, new technologies are frequently used in the field of data centers, and especially the recent "indirect evaporative cooling technology" is of great interest in the industry. The modular plate-fin indirect evaporative cooling and mechanical refrigeration combined air conditioning unit is designed according to the characteristics of all-weather operation of a data center, and the design concept is that natural cooling is mainly adopted and mechanical refrigeration is assisted. Compared with the traditional air conditioner, the refrigeration system can save more than 60% of the energy consumption of a chilled water system with a natural cold source without starting mechanical refrigeration for more than 65% -90% of the year, so that the total operation cost of the data center can be reduced to the minimum, and the data center is ensured to enjoy a constant-temperature, constant-humidity, stable and green environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be suitable for data center's indirect evaporative cooling and mechanical refrigeration compound air conditioning unit has solved the problem that current data center air conditioning equipment power consumption is big, the extravagant energy.
The technical scheme adopted by the utility model is that the indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for the data center comprises a shell, wherein a primary air channel and a secondary air channel which are crossed are arranged in the shell;
the primary air channel comprises a primary air inlet and a primary air supply outlet which are arranged on two opposite sides of the shell, and a filter a, an indirect evaporative cooling module, a direct evaporative cooling module, an evaporator and a primary air feeder are sequentially arranged in the primary air inlet according to the air flowing direction;
the evaporator is connected with the thermostatic expansion valve, the compressor and the condenser in sequence through a refrigerant pipeline to form a closed pipeline.
The utility model is also characterized in that,
the secondary air channel comprises a secondary air inlet which is positioned at the bottom of the indirect evaporative cooling module and corresponds to the shell, and a filter b, the indirect evaporative cooling module, a condenser and a secondary air outlet are sequentially arranged in the secondary air inlet according to the air flowing direction.
A secondary exhaust fan is arranged in the secondary exhaust outlet.
The direct evaporative cooling module comprises a filler, a water distributor a is arranged at the top of the filler, a water tank is arranged at the bottom of the filler, and the water distributor a is connected with the water tank through a water pipe.
The water pipe is provided with a circulating water pump.
The indirect evaporative cooling module comprises a plate-fin indirect evaporative cooling heat exchanger, and a high-pressure spray type water distributor spraying towards the plate-fin indirect evaporative cooling heat exchanger is arranged at the bottom of the plate-fin indirect evaporative cooling heat exchanger.
The thermostatic expansion valve and the compressor are both positioned at the bottom of the direct evaporative cooling module.
The utility model has the advantages that:
(1) the utility model discloses compound air conditioning unit combines direct evaporative cooling and mechanical refrigeration technique, when outdoor dry bulb temperature is less than 16 ℃ in winter, closes high-pressure atomizing water-locator and mechanical refrigeration part, only uses outdoor air to cool the return air of data center through the indirect evaporative cooling heat exchanger of plate-fin type in order to reach the requirement of air supply temperature, during air conditioning unit operation, can utilize outdoor air to carry out free cooling, reduce mechanical refrigeration and evaporative cooling's operating time as far as possible, thereby the energy saving;
(2) the utility model discloses compound air conditioning unit, when outdoor dry bulb temperature is higher than 16 ℃ and outdoor wet bulb temperature is less than 19 ℃, close mechanical refrigeration part, open high-pressure atomizing water-locator, outdoor new trend takes place direct evaporative cooling and absorbs the heat that comes from the data center return air through the core with the water smoke direct contact in the wet passageway of indirect evaporative cooling heat exchanger core, make the data center return air temperature drop after the heat transfer reach the air supply requirement, make full use of the "dry air ability" of outdoor air to handle the data center return air, reduce mechanical refrigeration's operating time as far as possible, thereby the energy saving;
(3) the utility model discloses compound air conditioning unit, outdoor dry bulb temperature is higher than 16 ℃ and outdoor wet bulb temperature is higher than 19 ℃, open each functional section of high-pressure atomizing water-locator and mechanical refrigeration, outdoor new trend takes place direct evaporative cooling with water smoke direct contact in the wet passageway of plate-fin indirect evaporative cooling heat exchanger core, and absorb the heat that comes from the data center return air through the core, make the data center return air temperature drop after the heat transfer reach the air supply requirement, outdoor new trend is after the isenthalpic cooling and absorb the heat of data center return air after the wet passageway of plate-fin core contacts with water smoke, the condenser of rethread core top absorbs the heat of condenser in order to improve the performance of mechanical refrigeration part, reduce the energy consumption of complete machine;
(4) the utility model discloses compound air conditioning unit, with natural cooling as the main, mechanical refrigeration is as the replenishment, and indirect evaporative cooling system's main operational mode can be divided into three kinds of mode such as dry mode, wet mode and mixed mode; the requirements of the temperature and the humidity of a working area under various working conditions can be met by switching the 3 modes, and the evaporation cooling functional section adopts water as a refrigerant, so that the environment is not polluted; the operation cost is low, and the method is particularly suitable for dry areas or areas with insufficient power resources.
Drawings
Fig. 1 is a schematic structural diagram of the indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for the data center.
In the figure, 1, a primary air inlet, 2, a filter a, 3, a plate-fin indirect evaporative cooling heat exchanger, 4, a condenser, 5, a secondary exhaust fan, 6, a secondary exhaust outlet, 7, a filler, 8, a water distributor a, 9, an evaporator, 10, a primary air blower, 11, a primary air supply outlet, 12, a water pipe, 13, a thermal expansion valve, 14, a compressor, 15, a water tank, 16, a circulating water pump, 17, a high-pressure spray type water distributor, 18, a filter b, 19, a secondary air inlet and 20, a shell.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses an indirect evaporative cooling and mechanical refrigeration composite air conditioning unit suitable for data center, as shown in figure 1, includes a shell 20, and a primary air channel and a secondary air channel which are crossed are arranged in the shell 20;
the primary air channel comprises a primary air inlet 1 and a primary air supply outlet 11 which are arranged at two opposite sides of the shell 20, and a filter a2, an indirect evaporative cooling module, a direct evaporative cooling module, an evaporator 9 and a primary air supply device 10 are sequentially arranged in the primary air inlet 1 according to the air flowing direction;
the evaporator 9 is connected with a thermostatic expansion valve 13, a compressor 14 and a condenser 4 in sequence through refrigerant pipelines to form a closed pipeline, namely a mechanical refrigeration module. The thermostatic expansion valve 13 and the compressor 14 are both located at the bottom of the direct evaporative cooling module. The mechanical refrigeration module directly places the evaporator 9 in the shell 20, thereby saving the unit size, reducing the fan resistance and reducing the initial investment; under the condition that mechanical refrigeration module need be opened, the indoor return air through plate-fin indirect evaporative cooling heat exchanger 3 core directly blows over evaporimeter 9 surface, gives evaporimeter 9 heat transfer, compares with traditional mechanical refrigeration mode, under the prerequisite of the same cold load, and the unit energy consumption reduces.
The direct evaporative cooling module comprises a filler 7, a water distributor a8 is arranged at the top of the filler 7, a water tank 15 is arranged at the bottom of the filler 7, the water distributor a8 is connected with the water tank 15 through a water pipe 12, and a circulating water pump 16 is arranged on the water pipe 12. The filler 7 is a metal aluminum foil filler which belongs to a non-combustible material and can effectively prevent fire. The bottom of the filler 7 is provided with a water tank 15, and the direct evaporative cooling module can be selectively opened according to the actual working condition of air in the data center, so that the air return of the data center can be humidified and cooled.
The secondary air channel comprises a secondary air inlet 19 which is positioned at the bottom of the indirect evaporative cooling module and corresponds to the shell 20, a filter b18, the indirect evaporative cooling module, a condenser 4 and a secondary air outlet 6 are sequentially arranged in the secondary air inlet 19 according to the air flowing direction, and a secondary exhaust fan 5 is arranged in the secondary air outlet 6.
The indirect evaporative cooling module comprises a plate-fin indirect evaporative cooling heat exchanger 3, and a high-pressure spray type water distributor 17 which sprays towards the plate-fin indirect evaporative cooling heat exchanger 3 is arranged at the bottom of the plate-fin indirect evaporative cooling heat exchanger 3.
The core material of the plate-fin indirect evaporative cooling heat exchanger 3 is a hydrophilic aluminum foil, wherein the surface of the aluminum foil is coated with a hydrophilic coating, so that the hydrophilicity is enhanced, a water film in a wet channel is easier to form and is more uniformly distributed, and the heat exchange efficiency is improved; the plate-fin indirect evaporative cooling heat exchanger 3 is provided with a high-pressure spray water distributor 17 at the lower part of the core body, which is different from the commonly adopted spray form at the upper part of the core body: the sprayed water mist is directly in full contact with outdoor fresh air passing through the secondary air inlet 19, a water tank is not required to be arranged on the lower portion of the core body, the size of the unit is reduced, the plate-fin core body is difficult to block in a spraying mode, and the service life of the unit core body is prolonged. The condenser 4 is arranged on the upper portion of the plate-fin indirect evaporative cooling core, and after outdoor fresh air is subjected to isenthalpic cooling through a wet channel of the plate-fin indirect evaporative cooling core, a part of heat from return air of the data center is absorbed and flows through the surface of the condenser 4 to absorb the heat of the condenser again, so that the mechanical refrigeration efficiency is greatly improved, and the energy consumption of mechanical refrigeration is reduced.
The utility model discloses compound air conditioning unit's working process as follows:
(1) and in winter, when the external environment temperature is lower, the unit operates in the dry mode.
The suitable temperature is as follows: the temperature of the dry ball is less than 16 ℃;
closing the high-pressure spray type water distributor 17 and the mechanical refrigeration module, selectively opening or closing the direct evaporative cooling module according to the humidification requirement, allowing outdoor low-temperature air to enter from the secondary air inlet 19, filtering by the filter b18, entering the core of the plate-fin indirect evaporative cooling heat exchanger 3 for heat exchange, and then discharging from the secondary air outlet 6 through the secondary exhaust fan 5; return air with higher temperature in the data center firstly enters the unit through the primary air inlet 1, is filtered by the filter a2, flows through the core body of the plate-fin indirect evaporative cooling heat exchanger 3, is directly cooled by outdoor low-temperature air, and then is sent into a data room through the primary air supply outlet 11 by the primary air supply machine 10.
(2) Wet mode: in the transition season, when the external environment temperature is relatively mild, the unit operates in a wet mode.
The suitable temperature is as follows: the dry bulb temperature is more than 16 ℃, and the wet bulb temperature is less than 19 ℃;
and starting the high-pressure spray type water distributor 17, closing the mechanical refrigeration module, and selectively opening or closing the direct evaporative cooling module according to the humidification requirement. The high-pressure spray type water distributor 17 sprays and distributes water to the plate-fin indirect evaporative cooling heat exchanger 3, outdoor air enters from a secondary air inlet 19, is filtered by a filter b18, enters the plate-fin indirect evaporative cooling heat exchanger 3 for heat exchange, and then passes through a secondary exhaust fan 5 and is discharged from a secondary exhaust outlet 6; the return air with higher temperature in the data center firstly enters the unit through the primary air inlet 1, is filtered by the filter 2, flows through the plate-fin indirect evaporative cooling heat exchanger 3 to exchange heat with the fresh air which is directly subjected to evaporative cooling treatment outdoors, and the cooled return air in the data center is sent into a data machine room through the primary air supply opening 11 by the primary air supply blower 10.
(3) Mixed mode: in hot summer, when the outdoor temperature is high and the wet bulb temperature is also high, the unit operates in a mixed mode.
The suitable temperature is as follows: wet bulb temperature is higher than 19 ℃;
and starting the high-pressure spray type water distributor 17 and the mechanical refrigeration module, and selectively opening or closing the direct evaporative cooling device 7 according to the humidification requirement. The high-pressure spray type water distributor 17 sprays and distributes water to the plate-fin indirect evaporative cooling heat exchanger 3, outdoor air enters from a secondary air inlet 19, is filtered by a filter 18, enters the plate-fin indirect evaporative cooling heat exchanger 3 for heat exchange, then takes away the heat of a condenser through the condenser 4, passes through a secondary exhaust fan 5 and is discharged from a secondary air outlet 6; return air with higher temperature in the data center firstly enters the unit through the primary air inlet 1, is filtered by the filter a2, flows through the plate-fin indirect evaporative cooling heat exchanger 3 to exchange heat with fresh air which is directly subjected to evaporative cooling treatment outdoors, precools the return air in the data center, is cooled by the evaporator 9, is returned to the cooled data center, and is sent to a data room through the primary air supply outlet 11 by the primary air supply blower 10, so that the circulation is realized.
The utility model discloses compound air conditioning unit is through combining direct evaporative cooling, indirect evaporative cooling, mechanical refrigeration organically, to the operation of rationally switching under the different work condition to reach the requirement that satisfies the data center humiture, reduced the waste of energy simultaneously as far as, abundant utilization outdoor natural cold source has also enlarged evaporative cooling technique application form and application range.
Claims (7)
1. The indirect evaporative cooling and mechanical refrigeration combined air conditioning unit is suitable for a data center and is characterized by comprising a shell (20), wherein a primary air channel and a secondary air channel which are crossed are arranged in the shell (20);
the primary air channel comprises a primary air inlet (1) and a primary air supply outlet (11) which are arranged on two opposite sides of the shell (20), and a filter a (2), an indirect evaporative cooling module, a direct evaporative cooling module, an evaporator (9) and a primary air feeder (10) are sequentially arranged in the primary air inlet (1) according to the air flowing direction;
the evaporator (9) is sequentially connected with a thermostatic expansion valve (13), a compressor (14) and a condenser (4) through refrigerant pipelines to form a closed pipeline.
2. The combined air conditioning unit as set forth in claim 1, wherein the secondary air passage includes a secondary air inlet (19) located at the bottom of the indirect evaporative cooling module and corresponding to the housing (20), and a filter b (18), the indirect evaporative cooling module, the condenser (4) and the secondary air outlet (6) are sequentially disposed in the secondary air inlet (19) in the air flowing direction.
3. Combined air conditioning unit according to claim 2, characterized in that a secondary exhaust fan (5) is arranged in the secondary exhaust outlet (6).
4. The combined air conditioning unit according to claim 1, characterized in that the direct evaporative cooling module comprises a filler (7), a water distributor a (8) is arranged on the top of the filler (7), a water tank (15) is arranged on the bottom of the filler (7), and the water distributor a (8) and the water tank (15) are connected through a water pipe (12).
5. Compound air conditioning unit according to claim 4, characterized in that a circulating water pump (16) is provided on the water pipe (12).
6. The combined air conditioning unit as claimed in claim 1 or 2, characterized in that the indirect evaporative cooling module comprises a plate-fin indirect evaporative cooling heat exchanger (3), and a high-pressure spray-type water distributor (17) which sprays towards the plate-fin indirect evaporative cooling heat exchanger (3) is arranged at the bottom of the plate-fin indirect evaporative cooling heat exchanger (3).
7. Combined air conditioning unit according to claim 1, characterized in that the thermostatic expansion valve (13) and the compressor (14) are both located at the bottom of the direct evaporative cooling module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369353.3U CN210463393U (en) | 2019-08-22 | 2019-08-22 | Indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for data center |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369353.3U CN210463393U (en) | 2019-08-22 | 2019-08-22 | Indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for data center |
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| CN210463393U true CN210463393U (en) | 2020-05-05 |
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| CN201921369353.3U Active CN210463393U (en) | 2019-08-22 | 2019-08-22 | Indirect evaporative cooling and mechanical refrigeration combined air conditioning unit suitable for data center |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593480A (en) * | 2022-04-18 | 2022-06-07 | 沈阳澳蓝节能科技有限公司 | Indirect evaporation and compression type refrigeration composite air conditioning system for data center |
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2019
- 2019-08-22 CN CN201921369353.3U patent/CN210463393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593480A (en) * | 2022-04-18 | 2022-06-07 | 沈阳澳蓝节能科技有限公司 | Indirect evaporation and compression type refrigeration composite air conditioning system for data center |
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