CN210107616U - Natural cooling type air conditioning system for data center - Google Patents
Natural cooling type air conditioning system for data center Download PDFInfo
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- CN210107616U CN210107616U CN201920862250.4U CN201920862250U CN210107616U CN 210107616 U CN210107616 U CN 210107616U CN 201920862250 U CN201920862250 U CN 201920862250U CN 210107616 U CN210107616 U CN 210107616U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 35
- 238000001816 cooling Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003507 refrigerant Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002274 desiccant Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000007704 transition Effects 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 description 25
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a natural cooling type air conditioning system for data center, including compressor, condenser, refrigerant pump, economic ware, auxiliary road throttling arrangement, first bypass valve, second bypass valve, main road throttling arrangement and water side heat exchanger. The inlet of the main path throttling device is connected with the outlet of the refrigerant pump; the inlet and the outlet of the water side heat exchanger are respectively connected with the outlet of the main path throttling device and the return air port of the compressor; the main inlet and the outlet of the economizer are respectively connected with the liquid outlet of the condenser and the inlet of the refrigerant pump; the auxiliary outlet of the economizer is connected with the air jet of the compressor; two ends of the auxiliary road throttling device are respectively connected with an auxiliary road inlet and a main road inlet of the economizer; the inlet and outlet of the first bypass valve are respectively connected with the exhaust and return ports of the compressor; the inlet and outlet of the second bypass valve are respectively connected with the inlet and outlet of the refrigerant pump. The utility model discloses an air conditioning system can effectively utilize round the clock, transition season and winter outdoor natural cold source, reduces the running energy consumption by a wide margin.
Description
Technical Field
The utility model relates to a data center is with natural cooling type air conditioning system.
Background
Human beings have entered the big data era, and along with a series of information engineering proposals and advances such as "internet +", "big data application" in "thirteen five" plans, the scale and the quantity of data center obtain rapid development to become the power consumption consumer of information society. In order to ensure efficient and reliable operation of the data center, heat generated by the servers of the data center during operation needs to be rapidly exhausted. According to statistics, the electricity consumption of the modern social data center accounts for 5% of the total electricity of the whole society. IDC industry research reports have shown that by 2016, data centers scale to 714.5 billion dollars. The 2016 year electricity consumption of the Chinese data center exceeds 1200 hundred million kilowatt hours, which is equivalent to the annual electricity generation of the three gorges hydropower station. For enterprises, the electricity consumption cost of the data center is a large expenditure, and the profit of the enterprises is greatly eroded. According to statistics, the energy consumption of the air conditioners of the machine room and the base station accounts for 40% -50% of the total energy consumption. The enclosure structure of the data center is closed, the sensible heat load is large, the wet load is small, when the indoor temperature of the data center is higher than the outdoor temperature in spring and autumn transition seasons or even winter, the traditional air conditioning system still operates in a compression refrigeration mode to provide refrigeration capacity for the interior of a machine room, the energy consumption is large, and the problems of low-temperature starting of a compressor, poor lubrication effect, energy regulation and the like exist. In order to reduce the energy consumption of the data center and reasonably configure social resources, a refrigeration system of the data center needs to be optimized, wherein a natural cold source is a preferred mode for solving the problem of high energy consumption of a data center machine room at present, and the natural cold source is renewable energy. The utilization of outdoor natural cold sources has been the focus of researchers and engineers in the industry, and engineering research is being conducted in different forms, such as fresh air systems, gas-gas heat exchange systems, and gas-water heat exchange systems. In addition, composite air conditioners comprising various heat pipes, such as gravity-type separated heat pipes, liquid pump-powered separated heat pipes, and air pump-powered separated heat pipes, have been proposed and used. However, most of the above solutions are limited to be used in small data center rooms, and are not well used in large data centers.
The invention patent application zl201510350859.x proposes a three-mode composite water chilling unit, which has a refrigeration mode, an air pump mode and a gravity heat pipe mode, but the performance of the scheme is enhanced in the refrigeration mode, and the scheme is suitable for occasions with long conveying distance, so that certain defects exist.
The invention patent application ZL201710180390.9 provides a refrigeration and fluorine pump driven natural cooling air-cooled water chilling unit which has only two working modes and has certain defects in the aspects of natural cold source utilization and refrigeration performance improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide a natural cooling type air conditioning system for data center, it can effectively utilize round the clock, transition season and winter outdoor natural cold source, reduces the operation energy consumption by a wide margin, has excellent energy saving and emission reduction effect.
The purpose of the utility model is realized like this: a natural cooling type air conditioning system for a data center, the air conditioning system including a compressor, a condenser, a refrigerant pump, a main path throttling device, and a water side heat exchanger; the compressor is composed of one compressor or a plurality of compressors connected in parallel, and each compressor is provided with an exhaust port, a return air port, an air injection port and a cooling motor port; the inlet of the condenser is connected with the exhaust port of the compressor; the inlet of the main path throttling device is connected with the outlet of the refrigerant pump; the inlet of the water side heat exchanger is connected with the outlet of the main path throttling device, and the outlet of the water side heat exchanger is connected with the return air port of the compressor; the air conditioning system also comprises an economizer, an auxiliary way throttling device, a first bypass valve and a second bypass valve; wherein,
the main path inlet of the economizer is connected with the liquid outlet of the condenser, and the main path outlet of the economizer is connected with the inlet of the refrigerant pump; the bypass outlet of the economizer is connected with the air jet of the compressor;
two ends of the auxiliary road throttling device are respectively connected with an auxiliary road inlet and a main road inlet of the economizer;
the inlet and the outlet of the first bypass valve are respectively connected with the exhaust port and the return port of the compressor;
and the inlet and the outlet of the second bypass valve are respectively connected with the outlet and the inlet of the refrigerant pump, and a small part of refrigerant is bypassed at the outlet of the second bypass valve and is directly conveyed to a motor cooling port of the compressor.
The natural cooling air conditioning system for the data center is characterized in that the main path throttling device is a single electronic expansion valve, or two electronic expansion valves are connected in parallel, or the electronic expansion valve is connected in parallel with the electromagnetic valve, or the electric flow regulating valve is connected in parallel with the electronic expansion valve; the auxiliary path throttling device is a single electronic expansion valve.
The data center is used for the natural cooling type air conditioning system, wherein the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
The natural cooling type air conditioning system for the data center further comprises an accumulator and a dry filter, wherein the accumulator and the dry filter are connected between the economizer and the refrigerant pump.
The utility model discloses a natural cooling type air conditioning system for data center has following characteristics, can be according to outdoor temperature and indoor load size, the adjustment system running state, makes air conditioning system switch into refrigeration cycle mode, mixed mode, liquid pump heat pipe mode or gravity heat pipe circulation mode respectively, has reduced the unit cost of current air conditioning system, has simplified system architecture, has reduced the maintenance degree of difficulty; meanwhile, outdoor natural cold sources in day and night, transition seasons and winter can be effectively utilized, the operation energy consumption is greatly reduced, and the energy-saving and emission-reducing effects are excellent.
Drawings
Fig. 1 is a schematic structural diagram of a natural cooling type air conditioning system for a data center according to the present invention;
FIG. 2 is a schematic diagram of the air conditioning system of the present invention without a refrigerant pump;
fig. 3 is a schematic structural diagram of the air conditioning system of the present invention in the cooling mode;
fig. 4 is a schematic structural diagram of the air conditioning system of the present invention in the mixed mode;
FIG. 5 is a schematic diagram of the air conditioning system of the present invention in the liquid pump heat pipe mode;
fig. 6 is a schematic structural diagram of the air conditioning system of the present invention in the gravity assisted heat pipe mode.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 6, the natural cooling type air conditioning system for a data center of the present invention includes a compressor 1, a condenser 2, a refrigerant pump 3, a main path throttling device 4, a water side heat exchanger 5, an economizer 7, an auxiliary path throttling device 8, a first bypass valve 6, and a second bypass valve 9; wherein,
the compressor 1 is composed of one compressor or a plurality of compressors connected in parallel; each compressor is a magnetic suspension compressor, an air suspension compressor or a centrifugal compressor which is provided with an exhaust port, an air return port, an air jet and a cooling motor port;
the inlet of the condenser 2 is connected with the exhaust port of the compressor 1; the condenser 2 is an air-cooled condenser, a water-cooled condenser or an evaporative condenser;
the main path inlet of the economizer 7 is connected with the liquid outlet of the condenser 2, and the main path outlet of the economizer 7 is connected with the inlet of the refrigerant pump 3; the auxiliary outlet of the economizer 7 is connected with the air jet of the compressor 1;
two ends of the auxiliary road throttling device 8 are respectively connected with an auxiliary road inlet and a main road inlet of the economizer 7; the auxiliary road flow device 8 and the auxiliary road of the economizer 7 form an air supply loop; the auxiliary throttle device 8 is a single electronic expansion valve;
the inlet and outlet of the first bypass valve 6 are connected to the exhaust port and return port of the compressor 1, respectively;
the inlet and the outlet of the second bypass valve 9 are respectively connected with the outlet and the inlet of the refrigerant pump 3, and a small part of refrigerant is bypassed at the outlet of the second bypass valve 9 and is directly conveyed to the motor cooling port of the compressor 1;
the inlet of the main path throttling device 4 is connected with the outlet of the refrigerant pump 3; the main path throttling device 4 has the function of adjusting the flow in a wide range and is a single electronic expansion valve, or two electronic expansion valves are connected in parallel, or the electronic expansion valve is connected with an electromagnetic valve in parallel, or an electric flow adjusting valve is connected with the electronic expansion valve in parallel;
the inlet of the water side heat exchanger 5 is connected with the outlet of the main path throttling device 4, and the outlet of the water side heat exchanger 5 is connected with the return air port of the compressor 1.
The utility model discloses a natural cooling type air conditioning system for data center still includes reservoir and the drier-filter (not shown in the figure) of connection between economizer 7 and refrigerant pump 3.
When the installation position of the condenser 2 and the installation position of the water side heat exchanger 5 have a sufficient height difference (more than 1 m), the refrigerant pump 3 and the second bypass valve 9 can be eliminated, and the specific structure of the system is shown in fig. 2.
The utility model discloses a natural cooling type air conditioning system for data center to different outdoor temperature or indoor load, corresponding switching is for operating in refrigeration cycle mode, mixed cycle mode, liquid pump heat pipe circulation mode and gravity heat pipe circulation mode.
When there is no natural cold source available outdoors, the utility model discloses an air conditioning system operates in the refrigeration mode, second bypass valve 9 is opened this moment, first bypass valve 6 is closed, refrigerant pump 3 is shut down, by compressor 1, condenser 2, the main road of economizer 7, second bypass valve 9, main road throttling arrangement 4, water side heat exchanger 5 constitute circulation circuit, and constitute the jet-propelled circuit by auxiliary road throttling arrangement 8, the auxiliary road of economizer 7 and the jet orifice of compressor 1, by the part refrigerant of the exit bypass of second bypass valve 9 directly carry to the motor cooling mouth of compressor 1 and carry out compressor motor cooling; the refrigeration working medium is directly evaporated in the water side heat exchanger 5 to realize refrigeration, the refrigerating capacity of the working medium is transferred to water, low-temperature cold water is conveyed to the inside of the data center through the action of a water pump, the tail end of chilled water completes the heat dissipation of the data center, hot water after evaporation and heat absorption is returned to the water side heat exchanger 5, heat in the hot water is transferred to the working medium in the water side heat exchanger 5, and the working medium is evaporated and heat absorbed to become gaseous working medium. The gaseous working medium enters the compressor 1 for compression, and the compressed gaseous working medium enters the condenser 2 and is cooled into a liquid working medium. The liquid working medium is divided into two paths, the main path working medium enters the main path throttling device 4 for throttling and pressure reduction through the main path of the economizer 7 and the second bypass valve 9, and then enters the water side heat exchanger 5 again for evaporation and heat absorption to achieve the purpose of refrigeration, and thus circulation is formed. The auxiliary path working medium achieves the purpose of supercooling the main path working medium through the auxiliary path of the economizer 7, increases the refrigerating capacity, and changes the auxiliary path working medium into a medium-pressure gaseous working medium to enter the air jet port of the compressor 1, thereby achieving the purpose of increasing the enthalpy by air jet; in addition, a small part of refrigerant is bypassed from the front of the main path throttling device 4 and is conveyed to a motor cooling port of the compressor 1, so that the motor cooling of the compressor is realized (see fig. 3).
When can utilize outdoor certain natural cold source, the utility model discloses an air conditioning system moves in mixed mode, and second by-pass valve 9 is closed this moment, and first by-pass valve 6 is closed, constitutes circulation circuit by compressor 1, condenser 2, the main road of economic ware 7, refrigerant pump 3, main road throttling arrangement 4, water side heat exchanger 5 to constitute jet loop by the jet-propelled mouth of the auxiliary road throttling arrangement 8, the auxiliary road of economic ware 7 and compressor 1, directly carry out compressor motor cooling to the motor cooling mouth of compressor 1 by the exit by-pass part refrigerant of refrigerant pump 3; the refrigeration working medium is directly evaporated in the water side heat exchanger 5 to realize refrigeration, the refrigerating capacity of the working medium is transmitted to water, low-temperature cold water is conveyed to the inside of the data center through the action of a water pump, the tail end of chilled water completes the heat dissipation of the data center, hot water after evaporation and heat absorption is returned to the water side heat exchanger 5, heat in the hot water is transmitted to the working medium in the water side heat exchanger 5, the working medium is evaporated and heat absorbed to be changed into a gaseous working medium, the gaseous working medium enters the compressor 1 to be compressed, and the compressed gaseous working medium enters the condenser 2 and is cooled into a. The liquid working medium is divided into two paths, the main path working medium enters the refrigerant pump 3 through the main path of the economizer 7, the outdoor temperature is low at the moment, the condensation effect is good, the condensation pressure is low, the unit is required to be smoothly circulated under the pressurization effect of the refrigerant pump 3, the liquid working medium enters the main path throttling device 4 after being pressurized by the refrigerant pump 3 to be throttled and depressurized, and then enters the water side heat exchanger 5 again to be evaporated and absorb heat, so that the refrigeration purpose is realized, and the circulation is formed. The auxiliary path working medium achieves the purpose of supercooling the main path working medium through the auxiliary path of the economizer 7, increases the refrigerating capacity, and changes the auxiliary path working medium into a medium-pressure gaseous working medium to enter the air jet port of the compressor 1, thereby achieving the purpose of increasing the enthalpy by air jet; in addition, a small part of refrigerant is bypassed from the refrigerant pump 3 and is conveyed to a motor cooling port of the compressor 1, so that the motor cooling of the compressor is realized (see fig. 4).
When the outdoor sufficient natural cold source can be utilized, the air conditioning system of the utility model operates in the liquid pump heat pipe circulation mode, at the moment, the second bypass valve 9 is closed, the first bypass valve 6 is opened, and the condenser 2, the main path of the economizer 7, the refrigerant pump 3, the main path throttling device 4, the water side heat exchanger 5 and the first bypass valve 6 form a circulation loop; because the outdoor temperature is lower at this moment, the unit can directly run a liquid pump heat pipe mode to replace a vapor compression refrigeration mode, refrigeration working media are directly evaporated in the water side heat exchanger 5 to realize refrigeration, the refrigerating capacity of the working media is transferred to water, low-temperature cold water is conveyed to the inside of the data center through the water pump effect, the tail end of the refrigerated water completes the heat dissipation of the data center, hot water after evaporation and heat absorption is returned to the water side heat exchanger 5, heat in the hot water is transferred to the working media in the water side heat exchanger 5, the working media are changed into gaseous working media after evaporation and heat absorption, the gaseous working media bypass the compressor 1, and directly enter the condenser 2 through the opened first bypass valve 6 and are cooled. The liquid working medium enters the refrigerant pump 3, enters the main path throttling device 4 after being pressurized by the refrigerant pump 3, enters the water side heat exchanger 5 again for evaporation and heat absorption, the refrigeration purpose is realized, and the circulation is formed in this way. At this time the sub-road throttling device 8 is closed and the sub-road of the economizer 7 is not operating (see fig. 5).
When can utilize outdoor sufficient natural cold source to condenser 2's mounted position and water side heat exchanger 5's mounted position have sufficient difference in height (being greater than 1 meter), the utility model discloses an air conditioning system operates in gravity heat pipe circulation mode, and second bypass valve 9 is opened this moment, and first bypass valve 6 is opened, and circulation loop comprises condenser 2, the main road of economic ware 7, second bypass valve 9, main road throttling arrangement 4, water side heat exchanger 5 and first bypass valve 6 circulation loop. Because the outdoor temperature is lower and the indoor load is small, the unit can directly run a gravity heat pipe mode to replace a vapor compression refrigeration mode, the refrigeration working medium is directly evaporated in the water side heat exchanger 5 to realize refrigeration, the refrigeration quantity of the working medium is transferred to water, low-temperature cold water is conveyed to the inside of the data center through the action of the water pump, the tail end of the chilled water completes the heat dissipation of the data center, and the hot water after evaporation and heat absorption is returned to the water side heat exchanger 5, the heat in the hot water is transferred to the working medium in the water side heat exchanger 5, the working medium is evaporated and absorbs heat to be changed into a gaseous working medium, the gaseous working medium bypasses the compressor 1, directly enters the condenser 2 through the opened first bypass valve and is cooled into a liquid working medium, the liquid working medium enters the main path throttling device 4 through the opened second bypass valve 9, and enters the water side heat exchanger 5 again to be evaporated and absorbed heat, so that the refrigeration purpose is realized, and the circulation is formed. At this time the sub-road throttling device 8 is closed and the sub-road of the economizer 7 is not operating (see fig. 6).
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A natural cooling type air conditioning system for a data center, the air conditioning system including a compressor, a condenser, a refrigerant pump, a main path throttling device, and a water side heat exchanger; the compressor is composed of one compressor or a plurality of compressors connected in parallel, and each compressor is provided with an exhaust port, a return air port, an air injection port and a cooling motor port; the inlet of the condenser is connected with the exhaust port of the compressor; the inlet of the main path throttling device is connected with the outlet of the refrigerant pump; the inlet of the water side heat exchanger is connected with the outlet of the main path throttling device, and the outlet of the water side heat exchanger is connected with the return air port of the compressor; the air conditioning system is characterized by further comprising an economizer, an auxiliary way throttling device, a first bypass valve and a second bypass valve;
the main path inlet of the economizer is connected with the liquid outlet of the condenser, and the main path outlet of the economizer is connected with the inlet of the refrigerant pump; the bypass outlet of the economizer is connected with the air jet of the compressor;
two ends of the auxiliary road throttling device are respectively connected with an auxiliary road inlet and a main road inlet of the economizer;
the inlet and the outlet of the first bypass valve are respectively connected with the exhaust port and the return port of the compressor;
and the inlet and the outlet of the second bypass valve are respectively connected with the outlet and the inlet of the refrigerant pump, and a small part of refrigerant is bypassed at the outlet of the second bypass valve and is directly conveyed to a motor cooling port of the compressor.
2. The natural cooling type air conditioning system for data center according to claim 1, wherein the main path throttling means is a single electronic expansion valve, or two electronic expansion valves are connected in parallel, or an electronic expansion valve is connected in parallel with a solenoid valve, or an electric flow regulating valve is connected in parallel with an electronic expansion valve; the auxiliary path throttling device is a single electronic expansion valve.
3. The free-cooling air conditioning system for data centers as claimed in claim 1, wherein the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
4. The free-cooling air conditioning system for data centers as recited in claim 1 further comprising an accumulator and a desiccant filter connected between the economizer and the refrigerant pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920862250.4U CN210107616U (en) | 2019-06-10 | 2019-06-10 | Natural cooling type air conditioning system for data center |
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| CN201920862250.4U CN210107616U (en) | 2019-06-10 | 2019-06-10 | Natural cooling type air conditioning system for data center |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212531A (en) * | 2020-08-31 | 2021-01-12 | 青岛海尔空调电子有限公司 | Compressor cooling system and cooling method |
| CN113928084A (en) * | 2021-10-21 | 2022-01-14 | 浙江吉利控股集团有限公司 | Air conditioner heat management system, control method and vehicle |
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2019
- 2019-06-10 CN CN201920862250.4U patent/CN210107616U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212531A (en) * | 2020-08-31 | 2021-01-12 | 青岛海尔空调电子有限公司 | Compressor cooling system and cooling method |
| CN112212531B (en) * | 2020-08-31 | 2023-06-16 | 青岛海尔空调电子有限公司 | Compressor cooling system and cooling method |
| CN113928084A (en) * | 2021-10-21 | 2022-01-14 | 浙江吉利控股集团有限公司 | Air conditioner heat management system, control method and vehicle |
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