CN112097353A - Cooling system and cooling method for data center room - Google Patents

Abstract

The present disclosure discloses a cooling system and a cooling method for a data center computer room. The cooling system for a data center computer room includes a gas heat exchange chamber, and the gas heat exchange chamber is provided with an air inlet and an air return port; the air inlet is used for supplying The outdoor fresh air enters the gas heat exchange room, and the return air port is used for the hot air in the data center room to enter the gas heat exchange room; the gas heat exchange room is provided with at least a first heat exchanger and a second heat exchanger, and the first heat exchanger is connected to the gas heat exchange room. The second heat exchangers are connected in series; the hot air passes through the second heat exchanger and the first heat exchanger in sequence and forms the inner circulating cold air; the outdoor fresh air passes through the first heat exchanger and the second heat exchanger in sequence and forms the outer circulating hot air The gas heat exchange room is also provided with an air supply port for the internal circulating cold air to enter the data center room and an exhaust port for the external circulating hot air to exhaust the gas heat exchange room.

Description

Cooling system and cooling method for data center room

technical field

The present disclosure relates to the technical field of indoor air cooling, and more particularly, to a cooling system and a cooling method for a data center room.

Background technique

The equipment in the data center computer room generates a huge amount of heat during operation. In order to ensure the normal operation of the equipment, it is necessary to cool the equipment room of the data center to keep it at a stable temperature and humidity. In the prior art, when cooling the equipment room of the data center, the traditional indirect evaporative cooling unit only includes a single heat exchange device, which has a poor cooling effect; when the outdoor fresh air temperature is high, it cannot provide the equipment room of the data center. Effective cooling and cooling effect.

In view of this, it is necessary to provide a new technical solution to solve the above technical problems.

SUMMARY OF THE INVENTION

An object of the present disclosure is to provide a new technical solution for a cooling system and a cooling method for a data center room.

According to a first aspect of the present disclosure, there is provided a cooling system for a data center computer room, the cooling system for a data center computer room comprising:

a gas heat exchange chamber, the gas heat exchange chamber is provided with an air inlet and a return air outlet;

The air inlet is used for outdoor fresh air to enter the gas heat exchange chamber, and the air return port is used for the hot air in the data center room to enter the gas heat exchange chamber;

At least a first heat exchanger and a second heat exchanger are arranged in the gas heat exchange chamber, and the first heat exchanger and the second heat exchanger are connected in series;

The hot air passes through the second heat exchanger and the first heat exchanger in sequence and forms an inner circulating cold air; the outdoor fresh air passes through the first heat exchanger and the second heat exchanger in sequence and forms External circulation of hot air;

The gas heat exchange chamber is also provided with an air supply port for the inner circulating cold air to enter the computer room of the data center and an air outlet for the outer circulation hot air to be discharged from the gas heat exchange chamber.

Optionally, the first heat exchanger and the second heat exchanger are connected in series at a preset angle; the preset angle ranges from 90° to 180°.

Optionally, the first heat exchanger and the second heat exchanger are formed with a first air duct and a second air duct, the first end of the first air duct is connected to the air inlet, and the second end is connected to the air inlet. The air exhaust port is connected; the first end of the second air duct is connected with the air return port, and the second end is connected with the air supply port.

Optionally, a supplementary cooling component is further provided in the gas heat exchange chamber, and the supplementary cooling component is configured to cool the inner circulating cold air before the inner circulating cold air enters the data center equipment room.

Optionally, the supplementary cooling component includes a supplemental cooling evaporator, a supplemental cooling compressor, and a supplemental cooling condenser; the supplemental cooling evaporator is located in the second air duct and is arranged corresponding to the air supply port, and the supplemental cooling The cold condenser is located in the first air duct and is arranged corresponding to the air outlet.

Optionally, a wet film is further disposed in the gas heat exchange chamber, and the wet film is located in the first air duct and is disposed corresponding to the air inlet.

Optionally, a humidification water pump and a spray device are provided in the gas heat exchange chamber, and the humidification water pump is used to provide spray water for the spray device; the spray device is used to spray the wet film Cool down.

According to a second aspect of the present disclosure, there is provided a cooling method using the cooling system of the first aspect, the method comprising:

The outdoor fresh air passes through the first heat exchanger and forms the first outer circulation hot air, and the first outer circulation hot air passes through the second heat exchanger and forms the outer circulation hot air; at the same time, in the data center room The hot air passes through the second heat exchanger and forms the first inner circulation cold air, and the first inner circulation cold air passes through the first heat exchanger and forms the inner circulation cold air;

The data center equipment room is cooled by using the inner circulating cold air.

Optionally, before using the internal circulating cold air to cool the data center equipment room, the method further includes:

Filter and purify the inner circulating cold air.

Optionally, the cooling system further includes a wet film, and when the temperature of the outdoor fresh air is higher than a first threshold, before the outdoor fresh air passes through the first heat exchanger, the method further includes:

The outdoor fresh air is pre-cooled by using the wet film.

Optionally, the cooling system further includes a supplemental cooling component; when the temperature of the outdoor fresh air is higher than the second threshold, before using the inner circulating cold air to cool the data center equipment room, the method further includes:

The inner circulating cold air is cooled and lowered by the supplementary cooling component.

In the cooling system provided by the embodiments of the present disclosure, at least two heat exchangers, namely the first heat exchanger and the second heat exchanger, are arranged in series in the gas heat exchange room, so that the outdoor fresh air and the hot air from the data center room After two heat exchanges in the first heat exchanger and the second heat exchanger respectively, the outdoor fresh air performs indirect evaporative cooling on the hot air twice, so that the hot air can be cooled twice to obtain internal circulating cold air, so that the internal circulating cold air is cooled. The air can reach a lower temperature, which improves the cooling effect of cooling the data center room.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural diagram 1 of a cooling system used in a data center room according to the disclosure;

FIG. 2 is a second structural schematic diagram of a cooling system used in a data center room according to the disclosure.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

In all examples shown and discussed herein, any specific values should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may have different values.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

An embodiment of the present disclosure provides a cooling system for a data center computer room. Referring to FIG. 1 , the cooling system for a data center computer room includes a gas heat exchange chamber 101 , and the gas heat exchange chamber 101 is provided with an air inlet. 102 and air return port 103; the air inlet 102 is used for outdoor fresh air to enter the gas heat exchange chamber 101, and the return air port 103 is used for the hot air in the data center room to enter the gas heat exchange chamber 101; the The gas heat exchange chamber 101 is provided with at least a first heat exchanger 106 and a second heat exchanger 107, the first heat exchanger 106 and the second heat exchanger 107 are connected in series; the hot air passes through the The second heat exchanger 107 and the first heat exchanger 106 form internal circulating cold air; the outdoor fresh air passes through the first heat exchanger 106 and the second heat exchanger 107 in sequence and forms external circulating heat Air; the gas heat exchange chamber 101 is also provided with an air supply port 111 for the inner circulating cold air to enter the data center room and an air outlet 112 for the outer circulation hot air to exhaust the gas heat exchange chamber 101 .

In the cooling system provided by the embodiment of the present disclosure, at least two heat exchangers, namely the first heat exchanger 106 and the second heat exchanger 107 are arranged in series in the gas heat exchange chamber 101, so that the outdoor fresh air and the data from the The hot air in the central computer room undergoes two heat exchanges in the first heat exchanger 106 and the second heat exchanger 107 respectively, and the outdoor fresh air performs indirect evaporative cooling on the hot air twice, so that the hot air is cooled twice to obtain an internal circulation cooling. air, so that the inner circulating cold air can reach a lower temperature, which improves the cooling effect of the data center equipment room.

In one embodiment, the first heat exchanger 106 and the second heat exchanger 107 are formed with a first air duct and a second air duct, and the first end of the first air duct is connected to the air inlet 102 , the second end is connected with the exhaust port 112 ; the first end of the second air duct is connected with the air return port 103 , and the second end is connected with the air supply port 111 . In one embodiment, further, the first heat exchanger 106 and the second heat exchanger 107 are connected in series at a preset angle; the preset angle ranges from 90° to 180°.

Further, when the outdoor fresh air and hot air pass through the first heat exchanger 106 and the second heat exchanger 107 in the gas heat exchange chamber 101, two air ducts are formed, that is, the first air from the air inlet 102 to the air outlet 112. duct and the second air duct from the return air port 103 to the air supply port 111 . 1 and 2, by adjusting the angle between the first heat exchanger 106 and the second heat exchanger 107 within a preset angle range of 90°-180°, the flow of outdoor fresh air and hot air can be changed. It can realize the change of wind direction in the range of 90°-180°, which not only greatly saves the space for forming the air duct in the gas heat exchange chamber 101, but also compresses the overall size; The hot air passes through the path of the first heat exchanger 106 and the second heat exchanger 107, thereby increasing the heat exchange area, further reducing the temperature of the finally obtained inner circulating cold air, and improving the cooling effect.

In an embodiment, further, a supplemental cooling component is further provided in the gas heat exchange chamber 101, and the supplementary cooling component is configured to cool the inner circulation before the inner circulation cold air enters the data center equipment room Air to cool down.

In this specific example, since the supplementary cooling component is used to further cool the inner circulating cold air, a better cooling effect can be produced for the data center equipment room. Preferably, the supplementary cooling component adopts an environment-friendly supplemental cooling refrigerant, and the environment-friendly supplemental cooling refrigerant has the characteristics of being clean, environmentally friendly, highly efficient and energy-saving, and has a good cooling effect.

In one embodiment, further, the supplemental cooling component includes a supplemental cooling evaporator 108, a supplemental cooling compressor 109 and a supplemental cooling condenser 110; the supplemental cooling evaporator 108 is located in the second air duct and is connected to the The air supply openings 111 are correspondingly arranged, and the supplementary cooling condenser 110 is located in the first air duct and arranged corresponding to the air exhaust openings 112 .

Specifically, the supplemental cooling evaporator 108 is one of the components of the supplemental cooling assembly, wherein the low-temperature condensed liquid exchanges heat with the outside air through the supplemental cooling evaporator 108, and vaporizes and absorbs heat to achieve a cooling effect. The supplementary cooling condenser 110 is another component of the supplementary cooling assembly, which belongs to a type of heat exchanger, which can convert gas or steam into liquid, and transfer heat to the air at a very fast speed. The working process of 110 is an exothermic process. The supplemental cooling compressor 109 is another component of the supplemental cooling assembly, and the supplemental cooling component inputs electrical energy through the supplemental cooling compressor 109 to discharge heat from a low temperature environment to a high temperature environment. In addition, by arranging the supplementary cooling evaporator 108 at the position corresponding to the air supply port 111 in the second air duct, and disposing the supplemental cooling condenser 110 at the position corresponding to the first air duct and the air outlet 112, on the one hand, in the Before the inner circulating cold air enters the data center room through the air supply port 111, the inner circulating cold air will pass through the supplemental cooling evaporator 108, so that the supplemental cooling evaporator 108 can further cool the inner circulating cold air; on the other hand, the supplementary cooling condenser 110 is arranged corresponding to the air outlet 112, so that the heat dissipated by the supplementary cooling condenser 110 during operation can be discharged out of the gas heat exchange chamber 101 together with the external circulating hot air.

In one embodiment, further, in the gas heat exchange chamber 101 , a blower 113 is provided corresponding to the air supply port 111 , and the arrangement of the blower 113 can help accelerate and promote the internal circulation of cold air into the data center room. In one embodiment, further, in the gas heat exchange chamber 101 , an exhaust fan 114 is provided corresponding to the exhaust port 112 , and the exhaust fan 114 can help to accelerate the external circulation hot air to be discharged from the gas heat exchange chamber 101 .

In one embodiment, further, a wet film 104 is further disposed in the gas heat exchange chamber 101 , and the wet film 104 is located in the first air duct and is disposed corresponding to the air inlet 102 .

In this specific example, after the outdoor fresh air enters the gas heat exchange chamber 101 from the air inlet 102, it will first pass through the wet film 104. The wet film 104 is made of polymer composite material, which has strong water absorption and good The wet film 104 can provide a large contact area between the outdoor fresh air and its surface. When the outdoor fresh air passes through the wet film 104, the moisture in the wet film 104 can fully absorb the heat of the outdoor fresh air and vaporize and evaporate. So that the outdoor fresh air can achieve the purpose of humidification.

In one embodiment, further, a humidification water pump 105 and a spray device are provided in the gas heat exchange chamber 101, and the humidification water pump 105 is used to provide spray water for the spray device; the spray device It is used for spraying and cooling the wet film 104 .

In this specific example, the wet film 104 is sprayed, humidified and cooled by the spray device, and the spray water is provided by the humidification water pump 105 for the spray device. Among them, since the spraying device needs to spray moisture for the wet film 104, the spraying device needs to be set near the wet film 104; and the setting position of the humidification water pump 105 is relatively flexible, and it can be set at any position in the gas heat exchange chamber 101. vacant place.

Another embodiment of the present disclosure also provides a cooling method using the above cooling system, the method comprising:

S101, the outdoor fresh air passes through the first heat exchanger 106 and forms a first outer circulation hot air, and the first outer circulation hot air passes through the second heat exchanger 107 and forms an outer circulation hot air; at the same time, The hot air in the computer room of the data center passes through the second heat exchanger 107 and forms a first inner circulation cold air, and the first inner circulation cold air passes through the first heat exchanger 106 and forms an inner circulation cold air;

S102 , using the inner circulating cold air to cool the computer room of the data center.

In the cooling method provided by the embodiment of the present disclosure, the outdoor fresh air and the hot air from the data center equipment room undergo two heat exchanges in the first heat exchanger 106 and the second heat exchanger 107 respectively, and the outdoor fresh air performs two heat exchanges on the hot air. Second indirect evaporative cooling; after two heat exchanges, the hot air becomes the internal circulating cold air and returns to the data center computer room to cool down the data center computer room. The two heat exchanges enable the internal circulating cold air to reach a lower temperature and improve the In order to cool the cooling effect of the data center equipment room. The outdoor fresh air is transformed into external circulating hot air and is discharged out of the gas heat exchange chamber 101 . In the above process of cooling and cooling the data center equipment room, the outdoor fresh air does not directly enter the data center equipment room, but only uses the cooling capacity of the outdoor fresh air, so as to avoid bringing the dust and impurities in the outdoor fresh air into the data center equipment room. The data center equipment room will pollute the data center equipment room.

In an embodiment, further, before using the inner circulating cold air to cool the data center equipment room, the method further includes: filtering and purifying the inner circulating cold air.

In this specific example, the internal circulating cold air is first filtered and purified, and then the internal circulating cold air is sent into the data center computer room to cool down the data center computer room, which can ensure the cleanliness of the air in the data center computer room.

In one embodiment, the cooling system further includes a wet film 104, and when the temperature of the outdoor fresh air is higher than a first threshold, before the outdoor fresh air passes through the first heat exchanger 106, the method further includes : Use the wet film 104 to pre-cool the outdoor fresh air.

When the temperature of the outdoor fresh air is higher than the first threshold, such as in summer, the outdoor fresh air needs to be pre-cooled. In this embodiment, the wet film 104 is used to pre-cool the outdoor fresh air. During the process of the outdoor fresh air passing through the wet film 104, the humidity of the outdoor fresh air increases and the temperature decreases to achieve the effect of pre-cooling. Therefore, after the outdoor fresh air (that is, the pre-cooled outdoor fresh air) after being humidified and cooled by the wet film 104 enters the heat exchanger, it can be combined with the air generated in the data center equipment room and entering the heat exchanger through the air return port 103. The hot air performs good indirect evaporative cooling. During this indirect evaporative cooling process, the pre-cooled outdoor fresh air exchanges heat with the hot air, and the pre-cooled outdoor fresh air transfers the cooling capacity to the hot air, which reduces the cooling temperature of the hot air and forms an internal circulation Cold air, the inner circulating cold air will return to the data center computer room to cool down the data center computer room. In this embodiment, the spray water is not directly sprayed on the outdoor fresh air, but the water is sprayed on the wet film 104, so on the one hand, the spray water can be saved; The scale is brought into the heat exchanger by the outdoor fresh air and damages the heat exchanger. The wet film 104 is used to directly evaporate and cool the outdoor fresh air, and the spray water is directly sprayed on the wet film 104. The heat exchanger is in a pure dry mode for heat exchange, and does not directly contact with water, so as to avoid the generation of scale and scale in the heat exchanger. It is mainly produced in the wet film, and the effect of scale on the heat exchange efficiency and durability of the heat exchanger can be completely avoided by replacing the wet film regularly. In addition, in the cooling system provided by the embodiment of the present disclosure, the indirect evaporative cooling unit using the wet film realizes the single-side air intake and exhaust of the fresh air passage and the return air passage, which is different from the fresh air passage and return air of the traditional indirect evaporative cooling unit. The two or more sides of the air channel for air intake and exhaust in the embodiments of the present disclosure have less requirements on the building, do not need to specially customize the data center computer room building, and are easier to arrange in the traditional data center computer room building.

In an embodiment, further, the cooling system further includes a supplementary cooling component; when the temperature of the outdoor fresh air is higher than a second threshold, before using the inner circulating cold air to cool the data center equipment room, the method It also includes: using the supplementary cooling component to cool down the inner circulating cold air.

When the temperature of the outdoor fresh air is higher than the second threshold, that is, when the temperature of the outdoor fresh air is further higher than the first threshold, it is necessary to perform electric cooling auxiliary cooling, that is, the supplementary cooling component is turned on to further cool the inner circulating cold air, and then use further cooling The internal circulating cold air after cooling and cooling cools down the data center equipment room. Further, after using supplementary cooling components to cool down the inner circulating cold air, filter and purify the inner circulating cold air, and then send the inner circulating cold air into the data center room, which can ensure the air in the data center room. of cleanliness.

While some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are provided for illustration only, and are not intended to limit the scope of the present disclosure. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (11)

1. A cooling system for a data center room, characterized in that it includes: a gas heat exchange chamber (101), the gas heat exchange chamber (101) is provided with an air inlet (102) and a return air outlet (103); The air inlet (102) is used for outdoor fresh air to enter the gas heat exchange chamber (101), and the air return port (103) is used for the hot air in the data center room to enter the gas heat exchange chamber (101); At least a first heat exchanger (106) and a second heat exchanger (107) are arranged in the gas heat exchange chamber (101), and the first heat exchanger (106) and the second heat exchanger ( 107) series connection; The hot air passes through the second heat exchanger (107) and the first heat exchanger (106) in sequence and forms an inner circulating cold air; the outdoor fresh air passes through the first heat exchanger (106) and the the second heat exchanger (107) and form external circulating hot air; The gas heat exchange chamber (101) is also provided with an air supply port (111) for the inner circulating cold air to enter the data center room and an air outlet (111) for the outer circulation hot air to be discharged from the gas heat exchange chamber (101). 112). 2. The cooling system for a data center room according to claim 1, wherein the first heat exchanger (106) and the second heat exchanger (107) are connected in series at a preset angle ; The range of the preset included angle is 90°-180°. 3. The cooling system for a data center room according to claim 1, wherein the first heat exchanger (106) and the second heat exchanger (107) are formed with a first air duct and a second an air duct, the first end of the first air duct is connected with the air inlet (102), and the second end is connected with the air outlet (112); the first end of the second air duct is connected with the air outlet (112) The air return port (103) is connected, and the second end is connected with the air supply port (111). 4. The cooling system for a data center computer room according to claim 3, wherein a supplementary cooling component is further provided in the gas heat exchange chamber (101), and the supplemental cooling component is configured to The inner circulating cold air is cooled before entering the data center computer room. 5. The cooling system for a data center computer room according to claim 4, wherein the supplementary cooling component comprises a supplemental cooling evaporator (108), a supplemental cooling compressor (109) and a supplemental cooling condenser (110) ); the supplemental cooling evaporator (108) is located in the second air duct and is arranged corresponding to the air supply port (111), and the supplementary cooling condenser (110) is located in the first air duct and is connected to the air supply port (111). The air outlet (112) is correspondingly arranged. 6. The cooling system for a data center computer room according to claim 1, wherein a wet film (104) is further provided in the gas heat exchange chamber (101), and the wet film (104) is located in the The first air duct is arranged corresponding to the air inlet (102). 7. The cooling system for a data center computer room according to claim 6, wherein a humidification water pump (105) and a spray device are provided in the gas heat exchange chamber (101), and the humidification water pump (105) ) is used to provide spray water for the spray device; the spray device is used to spray and cool the wet film (104). 8. The cooling method using the cooling system according to any one of claims 1-7, wherein the method comprises: The outdoor fresh air passes through the first heat exchanger (106) and forms a first outer circulation hot air, and the first outer circulation hot air passes through the second heat exchanger (107) and forms an outer circulation hot air; and At the same time, the hot air in the computer room of the data center passes through the second heat exchanger (107) and forms a first inner circulation cold air, and the first inner circulation cold air passes through the first heat exchanger (106) and forms an inner circulation circulating cold air; The data center equipment room is cooled by using the inner circulating cold air. 9 . The cooling method according to claim 8 , wherein before using the inner circulating cold air to cool the equipment room of the data center, the method further comprises: 10 . Filter and purify the inner circulating cold air. 10. The cooling method according to claim 8, wherein the cooling system further comprises a wet film (104), and when the temperature of the outdoor fresh air is higher than a first threshold, the outdoor fresh air passes through the first heat exchange Before the device (106), the method further includes: The outdoor fresh air is pre-cooled by using the wet film (104). 11 . The cooling method according to claim 10 , wherein the cooling system further comprises a supplementary cooling component; when the temperature of the outdoor fresh air is higher than a second threshold, the cooling system of the data center room is cooled by the inner circulating cold air. 12 . Before performing refrigeration, the method further includes: The inner circulating cold air is cooled and lowered by the supplementary cooling component.

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