CN219797563U - Air conditioning system for data center - Google Patents
Air conditioning system for data center Download PDFInfo
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- CN219797563U CN219797563U CN202320402240.9U CN202320402240U CN219797563U CN 219797563 U CN219797563 U CN 219797563U CN 202320402240 U CN202320402240 U CN 202320402240U CN 219797563 U CN219797563 U CN 219797563U
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- valve
- air conditioning
- condenser
- data center
- heat exchange
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 239000003507 refrigerant Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 description 15
- 238000001704 evaporation Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- Other Air-Conditioning Systems (AREA)
Abstract
The utility model provides an air conditioning system for a data center, and belongs to the technical field of air conditioning. The system comprises: the system comprises a compressor unit, a first condenser, a second condenser, a heat exchange device, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a pump driving system and an indoor system; the compressor unit, the first condenser, the sixth valve and the primary side of the heat exchange device are sequentially connected in series end to end; the compressor unit, the fifth valve, the second condenser, the fourth valve and the sixth valve are sequentially connected with the primary side of the heat exchange device in series from beginning to end; the pump driving system, the indoor system and the secondary side of the heat exchange device are sequentially connected with the first valve in series from beginning to end; the pump driving system, the indoor system, the secondary side of the heat exchange device, the third valve, the second condenser and the second valve are sequentially connected in series from beginning to end. The utility model can realize the stepless regulation of natural cooling and mechanical cooling, and saves the electric energy and water resource consumption of the system.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to an air conditioning system for a data center.
Background
In recent years, data centers have been moving toward higher power densities, and the amount of heat generated by computer equipment in a machine room has been increasing. Data center rooms typically employ mechanical refrigeration to address heat dissipation issues. Mechanical refrigeration consumes a large amount of electrical energy and occupies a large proportion of the total power consumption of the data center.
Currently, large data centers may use air conditioning systems that include chilled water units to dissipate heat. In some cases, chilled water units cannot be used due to site and energy efficient constraints. And, the condensation side uses water evaporation cooling to consume a large amount of water resources.
Disclosure of Invention
In order to solve some or all of the problems in the prior art, an embodiment of the present utility model provides an air conditioning system for a data center. The technical scheme is as follows:
in a first aspect, there is provided an air conditioning system for a data center, comprising: the system comprises a compressor unit, a first condenser, a second condenser, a heat exchange device, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a pump driving system and an indoor system;
the compressor unit, the first condenser, the sixth valve and the primary side of the heat exchange device are sequentially connected in series from beginning to end to form a first loop;
the compressor unit, the fifth valve, the second condenser, the fourth valve and the sixth valve are sequentially connected with the primary side of the heat exchange device in series from beginning to end to form a second loop;
the pump driving system, the indoor system and the secondary side of the heat exchange device are sequentially connected in series with the first valve in an end-to-end manner to form a third loop;
the pump driving system, the indoor system, the secondary side of the heat exchange device, the third valve, the second condenser and the second valve are sequentially connected in series from head to tail to form a fourth loop.
Further, a condensing fan is further arranged on the outer sides of the first condenser and the second condenser.
Further, an oil filter is further connected to the liquid outlet pipeline of the compressor unit.
Further, the heat exchange device is a plate heat exchanger.
Further, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are electromagnetic valves.
Further, the sixth valve is an electronic expansion valve.
Further, the pump drive system includes: at least one refrigerant pump and at least one liquid storage tank;
if a plurality of refrigerant pumps are provided, a plurality of refrigerant pumps are connected in parallel;
if the number of the liquid storage tanks is multiple, the liquid storage tanks are connected in parallel or in series.
Further, each of the refrigerant pumps is connected in series with a check valve through a pipe.
Further, the indoor system includes at least one set of indoor ends.
The utility model realizes flexible switching of the refrigerating modes of the air conditioning system by reasonably configuring each part in the air conditioning system and controlling the working states of the compressor and the plurality of valves. Compared with a data center air conditioning system adopting a chilled water unit, the system can fully utilize natural cold sources, and save the electric energy consumption of the system. In addition, the air cooling mode can avoid water evaporation and condensation, thereby reducing the fax risk of the compressor and saving water resource consumption.
Drawings
In order to more clearly illustrate the technical solutions of the inventive embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the inventive embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an overall structure of an air conditioning system for a data center according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a pump driving system of an air conditioning system for a data center according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of an indoor system of an air conditioning system for a data center according to an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings. Terms such as "upper," "lower," "first end," "second end," "one end," "the other end," and the like used herein to refer to a spatially relative position are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Furthermore, the terms "mounted," "disposed," "provided," "connected," "slidingly connected," "secured," and "sleeved" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; either directly, indirectly, through intermediaries, or through internal connections between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The inventive embodiment of the utility model provides an air conditioning system for a data center, which comprises: the system comprises a compressor unit, a first condenser, a second condenser, a heat exchange device, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a pump driving system and an indoor system; the compressor unit, the first condenser, the sixth valve and the primary side of the heat exchange device are sequentially connected in series from beginning to end to form a first loop; the compressor unit, the fifth valve, the second condenser, the fourth valve and the sixth valve are sequentially connected with the primary side of the heat exchange device in series from beginning to end to form a second loop; the pump driving system, the indoor system and the secondary side of the heat exchange device are sequentially connected in series with the first valve in an end-to-end manner to form a third loop; the pump driving system, the indoor system, the secondary side of the heat exchange device, the third valve, the second condenser and the second valve are sequentially connected in series from head to tail to form a fourth loop.
Referring to fig. 1, an electromagnetic valve S1 is disposed on an outlet line of a secondary side of the plate heat exchanger, an electromagnetic valve S2 is disposed between an outlet line of the second condenser and an inlet line of the pump driving system, an electromagnetic valve S3 is disposed between an outlet line of the air conditioning indoor system and an inlet line of the second condenser, an electromagnetic valve S4 is disposed between an outlet line of the second condenser and a first inlet line of the heat exchanger, and an electromagnetic valve S5 is disposed between an outlet line of the compressor and an inlet line of the second condenser. In practice, the cooling mode may be switched by controlling the solenoid valves S1, S2, S3, S4 and S5. The cooling modes may include a mechanical cooling mode, a natural cooling mode, and a hybrid cooling mode.
In one embodiment, a condensing fan may be further provided outside the first condenser and the second condenser. The fan may provide flow power to the air surrounding the condenser, absorbing and exhausting heat at the condenser to the atmosphere through the air flow.
In practice, the compressor may be an oil-free centrifugal compressor or an oil-containing scroll compressor.
It is worth mentioning that the refrigeration capacity of the oil-free centrifugal compressor is smaller than that of the oil-containing scroll compressor; when the outdoor temperature is high, the risk of surge and shutdown is caused by the rise of the condensing pressure, and continuous refrigeration can be influenced to cause service interruption, so that the service life and reliability of the oil-free centrifugal compressor are low; the centrifugal compressor commonly uses R134a (tetrafluoroethane) low-pressure refrigerant, which can cause larger efficiency loss and influence energy efficiency under the condition of long-joint pipes with longer indoor and outdoor machine distances. Thus, in a preferred embodiment, an oil scroll compressor may be employed.
In practice, if an oil scroll compressor is used, an oil filter may be connected to the outlet line of the compressor unit in order to ensure that the secondary side is oil free. The oil filter may isolate the primary side oil and return the trapped oil to the suction side of the compressor (not shown in fig. 1).
In addition, each compressor or the outlet pipeline of the whole compressor unit can be connected with a check valve, and the check valve can block the refrigerant in the pipeline from flowing backwards, so that the compressor is prevented from being damaged, and the normal operation of the compressor is ensured.
In one embodiment, a condenser of an air conditioning outdoor system may be provided with a double layer coil to isolate a fluorine pump system (a circulation loop containing a refrigerant pump, such as a third loop and a fourth loop) and a compressor system (a refrigerant circulation loop containing a compressor, such as a first loop and a second loop). At this time, the condensing fan needs to bear larger air resistance, resulting in higher energy consumption. And, the double-layer coil has higher cost, resulting in higher cost of the condenser equipment. Thus, in a preferred embodiment, the condenser may employ a single layer coil, which may reduce air resistance and equipment costs as compared to a double layer coil.
In one embodiment, the heat exchange device may be a plate heat exchanger. The side of the heat exchange device connected to the compressor unit may be referred to as the primary side of the heat exchange device, and the side of the heat exchange device connected to the indoor system may be referred to as the secondary side.
In one embodiment, the first valve, the second valve, the third valve, the fourth valve, and the fifth valve may be solenoid valves.
In one embodiment, the sixth valve may be an electronic expansion valve. Electronic expansion valves may be used to regulate the amount of liquid supplied. By adjusting the opening degree of the electronic expansion valve, the liquid supply amount of the primary side loop can be adjusted, which is equivalent to adjusting the proportion of the mechanical refrigerating capacity and the natural refrigerating capacity, and stepless adjustment of the natural cooling and the mechanical cooling in the mixed refrigerating mode can be realized.
In one embodiment, each group of indoor ends may also be connected in series with an electronic expansion valve via a conduit. By adjusting the respective electronic expansion valves, the amount of liquid supplied in the secondary side loop through the respective indoor ends can be adjusted. If the indoor air-conditioning system comprises a plurality of groups of indoor ends, the adjusting parameters of the electronic expansion valves corresponding to the different indoor ends can be the same or different. Therefore, the cooling capacity can be flexibly adjusted for different indoor tail ends according to the difference of the environments.
Referring to fig. 2, in one embodiment, the pump drive system may include: at least one refrigerant pump and at least one liquid storage tank; if a plurality of refrigerant pumps are provided, a plurality of refrigerant pumps are connected in parallel; if the number of the liquid storage tanks is multiple, the liquid storage tanks are connected in parallel or in series.
In one embodiment, each of the refrigerant pumps may be connected in series with a check valve through a pipeline. The check valve can prevent the refrigerant from flowing back, avoid damaging the refrigerant pump and ensure the normal operation of the refrigerant pump.
Referring to fig. 3, in one embodiment, an air conditioning indoor system may include one or more sets of indoor terminals. The indoor terminal type can be various terminal types such as room air conditioner, inter-row air conditioner, air wall, back board air conditioner, back board air wall and the like, and a plurality of groups of indoor terminals (or called multi-connected terminals) can also be used in a combined mode.
It is worth mentioning that the arrows in fig. 1-3 may indicate the flow direction of the refrigerant (gaseous or liquid) in the piping.
Based on the structure provided by the embodiments above, the data center machine room can be cooled reasonably and effectively. Specifically, the refrigeration mode of the air conditioning system can be switched by the cooperation of the compressor and the plurality of valves. The switch states of the compressor and the respective valves in the different cooling modes can be seen in table 1.
Table 1: switch state in different refrigeration modes
Referring to fig. 1, the first valve may be a solenoid valve S1 for mechanical cooling, the second and third valves may be solenoid valves S2 and S3 for natural cooling, and the fourth and fifth valves may be DX (direct expansion) solenoid valves S4 and S5.
And closing the first valve S1, the fourth valve S4, the fifth valve S5 and the compressor unit, and opening the second valve S2 and the third valve S3 to enable a natural refrigeration mode.
It should be noted that turning off the compressor unit may refer to turning off the refrigeration function of the compressor unit, wherein the pipeline may not be cut off, and the refrigerant may still flow in the compressor unit. At this time, the refrigerant in the first circuit and the fourth circuit can flow for heat exchange.
And the first valve S1, the fourth valve S4 and the fifth valve S5 are closed, the second valve S2, the third valve S3 and the compressor unit are opened, and a mixed refrigeration mode can be started. At this time, the refrigerant in the first circuit and the fourth circuit can flow for heat exchange.
And closing the second valve S2 and the third valve S3, and opening the first valve S1, the fourth valve S4, the fifth valve S5 and the compressor unit, so that a mechanical refrigeration mode can be started. At this time, the refrigerant in the second circuit and the third circuit can flow for heat exchange.
In one embodiment, when the mechanical refrigeration mode or the hybrid refrigeration mode is employed, the compressor train may be energy conditioned with the evaporating pressure of the plate heat exchanger or other conditions as a control target, as the present utility model is not limited in this regard.
Based on the same technical conception, the inventive embodiment of the utility model also provides an air conditioning adjustment method of a data center machine room, which is applied to the air conditioning system for the data center in the first aspect; the method comprises the following steps:
closing the first valve, the fourth valve, the fifth valve and the compressor unit, and opening the second valve and the third valve to enable a natural refrigeration mode;
closing the first valve, the fourth valve and the fifth valve, and opening the second valve, the third valve and the compressor unit to enable a mixed refrigeration mode;
closing the second valve and the third valve, and opening the first valve, the fourth valve, the fifth valve, and the compressor unit to enable a mechanical refrigeration mode.
In one embodiment, the method further comprises: and adjusting the ratio of the mechanical refrigerating capacity to the natural refrigerating capacity by adjusting the opening degree of the sixth valve.
By adopting the embodiments, the utility model realizes flexible switching of the refrigerating modes of the air conditioning system by reasonably configuring all parts in the air conditioning system and controlling the working states of the compressor and the plurality of valves. Compared with a data center air conditioning system adopting a chilled water unit, the system can fully utilize natural cold sources, and save the electric energy consumption of the system. In addition, the air cooling mode can avoid water evaporation and condensation, thereby reducing the fax risk of the compressor and saving water resource consumption.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. An air conditioning system for a data center, comprising: the system comprises a compressor unit, a first condenser, a second condenser, a heat exchange device, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a pump driving system and an indoor system;
the compressor unit, the first condenser, the sixth valve and the primary side of the heat exchange device are sequentially connected in series from beginning to end to form a first loop;
the compressor unit, the fifth valve, the second condenser, the fourth valve and the sixth valve are sequentially connected with the primary side of the heat exchange device in series from beginning to end to form a second loop;
the pump driving system, the indoor system and the secondary side of the heat exchange device are sequentially connected in series with the first valve in an end-to-end manner to form a third loop;
the pump driving system, the indoor system, the secondary side of the heat exchange device, the third valve, the second condenser and the second valve are sequentially connected in series from head to tail to form a fourth loop.
2. The air conditioning system for a data center according to claim 1, wherein a condensing fan is further provided outside the first condenser and the second condenser.
3. The air conditioning system for a data center of claim 1, wherein an oil filter is further connected to a discharge line of the compressor unit.
4. The air conditioning system for a data center of claim 1, wherein the heat exchanging device is a plate heat exchanger.
5. The air conditioning system for a data center of claim 1, wherein the first valve, the second valve, the third valve, the fourth valve, and the fifth valve are solenoid valves.
6. The air conditioning system for a data center of claim 1, wherein the sixth valve is an electronic expansion valve.
7. The air conditioning system for a data center of claim 1, wherein the pump drive system comprises: at least one refrigerant pump and at least one liquid storage tank;
if a plurality of refrigerant pumps are provided, a plurality of refrigerant pumps are connected in parallel;
if the number of the liquid storage tanks is multiple, the liquid storage tanks are connected in parallel or in series.
8. The air conditioning system for a data center as set forth in claim 7, wherein each of said refrigerant pumps is connected in series with a check valve through a pipe.
9. The air conditioning system for a data center of claim 1, wherein said indoor system comprises at least one set of indoor terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320402240.9U CN219797563U (en) | 2023-03-06 | 2023-03-06 | Air conditioning system for data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320402240.9U CN219797563U (en) | 2023-03-06 | 2023-03-06 | Air conditioning system for data center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219797563U true CN219797563U (en) | 2023-10-03 |
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ID=88175523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320402240.9U Active CN219797563U (en) | 2023-03-06 | 2023-03-06 | Air conditioning system for data center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219797563U (en) |
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- 2023-03-06 CN CN202320402240.9U patent/CN219797563U/en active Active
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