CN210107617U - Air conditioning system with natural cooling function - Google Patents
Air conditioning system with natural cooling function Download PDFInfo
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- CN210107617U CN210107617U CN201920862255.7U CN201920862255U CN210107617U CN 210107617 U CN210107617 U CN 210107617U CN 201920862255 U CN201920862255 U CN 201920862255U CN 210107617 U CN210107617 U CN 210107617U
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Abstract
The utility model discloses a take natural cooling type air conditioning system, including indoor, outdoor module. The outdoor module includes a compressor, a condenser, an accumulator, a refrigerant pump, a bypass valve, and a bypass valve. The indoor module includes a throttling device and an end evaporator. The compressor is composed of one or more compressors connected in parallel; the inlet of the condenser is connected with the exhaust port of the compressor; the inlet of the liquid storage device is connected with the outlet of the condenser; the inlet of the refrigerant pump is connected with the outlet of the liquid storage device; the inlet of the throttling device is connected with the outlet of the refrigerant pump; the inlet and outlet of the end evaporator are respectively connected with the outlet of the throttling device and the return air port of the compressor; the inlet and outlet of the bypass valve are respectively connected with the inlet and outlet of the refrigerant pump, and the outlet of the bypass valve is also connected with the cooling motor port of the compressor; the inlet and outlet of the by-pass valve are connected with the discharge and return air ports of the compressor respectively. The utility model discloses an air conditioning system can effectively utilize round the clock, transition season and winter outdoor natural cold source.
Description
Technical Field
The utility model relates to a take natural cooling type air conditioning system for data center.
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 take natural cooling type air conditioning system, it can effectively utilize round the clock, transition season and winter outdoor natural cold source, reduces the running energy consumption by a wide margin, has excellent energy saving and emission reduction effect.
Realize the utility model discloses a technical scheme of purpose is: an air conditioning system with natural cooling comprises an outdoor module and an indoor module; the outdoor module comprises a compressor, a condenser, an accumulator and a refrigerant pump; the indoor module comprises a throttling device and a tail end evaporator; 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 and a cooling motor port; the inlet of the condenser is connected with the exhaust port of the compressor; an inlet of the liquid storage device is connected with an outlet of the condenser; the inlet of the refrigerant pump is connected with the outlet of the liquid accumulator; the inlet of the throttling device is connected with the outlet of the refrigerant pump; the inlet of the tail end evaporator is connected with the outlet of the throttling device, and the outlet of the tail end evaporator is connected with the return air port of the compressor; the outdoor module further comprises a bypass valve and a bypass valve; the inlet and the outlet of the 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 bypass valve and is directly conveyed to a motor cooling port of the compressor; the inlet and outlet of the bypass valve are connected to the discharge and return ports of the compressor, respectively.
In the air conditioning system with natural cooling, the 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.
In the above air conditioning system with natural cooling, the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
In the air conditioning system with natural cooling, the outdoor module further includes a dry filter and a sight glass connected between the accumulator and the refrigerant pump.
Realize the utility model discloses another kind of technical scheme of purpose is: an air conditioning system with natural cooling comprises an outdoor module and an indoor module; the outdoor module comprises a compressor, a condenser, an accumulator and a refrigerant pump; the indoor module comprises a throttling device and a tail end evaporator; 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; an inlet of the liquid storage device is connected with an outlet of the condenser; the inlet of the refrigerant pump is connected with the outlet of the liquid accumulator; the inlet of the throttling device is connected with the outlet of the refrigerant pump; the inlet of the tail end evaporator is connected with the outlet of the throttling device, and the outlet of the tail end evaporator is connected with the return air port of the compressor; the outdoor module also comprises a bypass valve, an economizer and an auxiliary way throttling device; the inlet and the outlet of the 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 bypass valve and is directly conveyed to a motor cooling port of the compressor; the inlet and the outlet of the bypass valve are respectively connected with the exhaust port and the return port of the compressor; 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 liquid storage device; the bypass outlet of the economizer is connected with the air jet of the compressor; and two ends of the auxiliary path throttling device are respectively connected with an auxiliary path inlet and a main path inlet of the economizer.
In the air conditioning system with natural cooling, the 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.
In the above air conditioning system with natural cooling, the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
In the air conditioning system with natural cooling, the outdoor module further includes a dry filter and a sight glass connected between the accumulator and the refrigerant pump.
The utility model discloses a take natural cooling type air conditioning system has following characteristics, can be according to outdoor temperature and indoor load size, the operating condition of adjustment system, make air conditioning system switch over respectively into refrigeration cycle mode, mixed mode, liquid pump heat pipe mode or gravity heat pipe cycle mode, reduced the unit cost of current air conditioning system, simplified system architecture, 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 first air conditioning system with natural cooling of the present invention;
FIG. 2 is a schematic diagram of the structure of the air conditioning system without a refrigerant pump according to the present invention;
fig. 3 is a schematic structural diagram of the air conditioning system of the present invention in a refrigeration cycle mode;
fig. 4 is a schematic structural diagram of the air conditioning system of the present invention in a mixed circulation mode;
FIG. 5 is a schematic diagram of the air conditioning system according to the present invention in the liquid pump heat pipe circulation mode;
FIG. 6 is a schematic diagram of the air conditioning system of the present invention in a gravity assisted heat pipe circulation mode;
fig. 7 is a schematic structural diagram of a second air conditioning system with natural cooling according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 6, a first air conditioning system with natural cooling of the present invention includes an outdoor module and an indoor module. An outdoor module compressor 1, a condenser 2, an accumulator 3, a refrigerant pump 4, a bypass valve 7 and a bypass valve 8; wherein the content of the first and second substances,
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 with an exhaust port, an air return port 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 inlet of the liquid storage device 3 is connected with the outlet of the condenser 2;
the inlet of the refrigerant pump 4 is connected with the outlet of the liquid accumulator 3;
the inlet and outlet of the bypass valve 7 are connected to the outlet and inlet of the refrigerant pump 4, respectively; a small part of refrigerant is bypassed at the outlet of the bypass valve 7 and is directly conveyed to a motor cooling port of the compressor 1;
the inlet and outlet of the bypass valve 8 are connected to the exhaust port and return port of the compressor 1, respectively;
the outdoor module further comprises a dry filter and a sight glass (not shown) connected between the accumulator 3 and the refrigerant pump 4;
the indoor module comprises a throttling device 5 and a tail end evaporator 6; wherein the content of the first and second substances,
the inlet of the throttling device 5 is connected with the outlet of the refrigerant pump 4, the throttling device 5 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 in parallel with an electromagnetic valve, or an electric flow adjusting valve is connected in parallel with the electronic expansion valve, and has the function of adjusting the flow in a wide range;
the inlet of the end evaporator 6 is connected to the outlet of the throttle means 5, and the outlet of the end evaporator 6 is connected to the return air port of the compressor 1.
The utility model discloses a first area natural cooling type air conditioning system when the mounted position of condenser 2 and the mounted position of terminal evaporimeter 6 have sufficient difference in height (being greater than 1 meter), can cancel reservoir 3, refrigerant pump 4 and bypass valve 7, and the concrete structure of system is seen in figure 2 this moment.
The utility model discloses a take natural cooling type air conditioning system 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 no natural cold source which can be utilized exists outdoors, the first air conditioning system with the natural cooling function of the utility model operates in a refrigeration cycle mode, at the moment, the bypass valve 7 is opened, and the bypass valve 8 is closed; the compressor 1, the condenser 2, the accumulator 3, the bypass valve 7, the throttle device 5, and the end evaporator 6 constitute a circulation circuit. A small part of refrigerant is bypassed at the outlet of the bypass valve 7 and is directly conveyed to a motor cooling port of the compressor 1 to cool the motor of the compressor 1; other refrigeration working media are directly evaporated in the tail end evaporator 6 to realize refrigeration; the refrigeration working medium evaporates and absorbs heat in the tail end evaporator 6, after refrigeration is finished and the refrigeration leaves the tail end evaporator 6, the refrigeration working medium is changed into a gaseous refrigerant, the gaseous refrigerant enters the compressor 1 for compression, then the gaseous refrigerant is discharged by the compressor 1, enters the condenser 2 and is cooled into a liquid working medium, the liquid working medium enters the liquid storage device 3 for storage, and directly enters the throttling device 5 through the opened bypass valve 7 for throttling and pressure reduction, and then enters the tail end evaporator 6 again for evaporation and heat absorption, so that the refrigeration purpose is realized, and the circulation is formed. In addition, a small part of refrigerant is bypassed from the front of the throttling device 5 and is conveyed to a motor cooling port of the compressor 1, so that the compressor is cooled (see fig. 3).
When a certain outdoor natural cold source can be utilized, the first air conditioning system with the natural cooling function of the utility model operates in a mixed circulation mode, the bypass valve 7 is closed at the moment, the bypass valve 8 is closed, and the compression ratio of the compressor 1 is small due to the certain natural cold source at the moment, so that the shortage of the pressure head is compensated through the action of the refrigerant pump 4; a circulation circuit is constituted by the compressor 1, the condenser 2, the accumulator 3, the refrigerant pump 4, the throttle device 5, and the end evaporator 6. The refrigeration working medium evaporates and absorbs heat in the tail end evaporator 6, after refrigeration is finished and the refrigeration leaves the tail end evaporator 6, the refrigeration working medium is changed into a gaseous refrigerant, the gaseous refrigerant enters the compressor 1 for compression, then the gaseous refrigerant is discharged by the compressor 1, enters the condenser 2 and is cooled into a liquid working medium, the liquid working medium enters the liquid storage device 3 for storage, enters the throttling device 5 for throttling and pressure reduction under the pressurization effect of the refrigerant pump 4, enters the tail end evaporator 6 again for evaporation and heat absorption, the refrigeration purpose is achieved, and circulation is formed in the way. And a bypass part of refrigerant at the outlet of the refrigerant pump 4 is directly conveyed to a motor cooling port of the compressor 1 for cooling the motor of the compressor (see figure 4).
When can utilize outdoor sufficient natural cold source, the utility model discloses a take natural cooling type air conditioning system's operation in liquid pump heat pipe circulation mode, close bypass valve 7 this moment, bypass valve 8 is opened. The bypass valve 8, the condenser 2, the accumulator 3, the refrigerant pump 4, the throttle device 5, and the end evaporator 6 constitute a circulation circuit. The refrigeration working medium evaporates and absorbs heat in the tail end evaporator 6, and directly enters the condenser 2 through the opened bypass valve 8 after refrigeration is finished and leaves the tail end evaporator 6, and because the outdoor natural cold source is enough, the refrigerant does not need to be pressurized by the compressor 1 and enters the condenser 2 for condensation, the gaseous refrigerant directly enters the condenser 2 to be condensed into liquid refrigerant, and enters the tail end evaporator 6 for evaporation and heat absorption under the action of the refrigerant pump 4 and the throttling device 5 again, so that the refrigeration purpose is realized, and the circulation is formed (see fig. 5).
When can utilize outdoor sufficient natural cold source to the mounted position of condenser 2 and the mounted position of terminal evaporimeter 6 have certain difference in height, the utility model discloses a take natural cooling type air conditioning system can also operate in gravity heat pipe circulation mode, opens bypass valve 7 this moment, and bypass valve 8 is opened. The bypass valve 8, the condenser 2, the bypass valve 7, the throttle device 5, and the end evaporator 6 constitute a circulation circuit. The refrigeration working medium evaporates and absorbs heat in the tail end evaporator 6, and directly enters the condenser 2 through the opened bypass valve 8 after refrigeration is finished and leaves the tail end evaporator 6, and because the outdoor natural cold source is enough, the refrigerant does not need to be pressurized by the compressor 1 and then enters the condenser 2 for condensation, the gaseous refrigerant directly enters the condenser 2 to be condensed into liquid refrigerant, and then enters the tail end evaporator 6 for evaporation and heat absorption after passing through the throttling device 5 again under the action of gravity, so that the refrigeration purpose is realized, and the circulation is formed (see fig. 6).
Referring to fig. 7, a second air conditioning system with natural cooling of the present invention includes an outdoor module and an indoor module; the outdoor module comprises a compressor 1, a condenser 2, an accumulator 3, a refrigerant pump 4, a bypass valve 7, a bypass valve 8, an economizer 9 and an auxiliary throttle device 10; wherein the content of the first and second substances,
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 inlet of the liquid storage device 3 is connected with the outlet of the condenser 2;
the inlet of the refrigerant pump 4 is connected with the outlet of the liquid accumulator 3;
the inlet and outlet of the bypass valve 7 are connected to the outlet and inlet of the refrigerant pump 4, respectively; a small part of refrigerant is bypassed at the outlet of the bypass valve 7 and is directly conveyed to a motor cooling port of the compressor 1;
the inlet and outlet of the bypass valve 8 are connected to the exhaust port and return port of the compressor 1, respectively;
a main path inlet of the economizer 9 is connected with a liquid outlet of the condenser 2, an auxiliary path outlet of the economizer 9 is connected with an air jet of the compressor 1, and a main path outlet of the economizer 9 is connected with an inlet of the liquid storage device 3;
two ends of the auxiliary road throttling device 10 are respectively connected with an auxiliary road inlet and a main road inlet of the economizer 9;
the indoor module comprises a throttling device 5 and a tail end evaporator 6; wherein the content of the first and second substances,
the inlet of the throttling device 5 is connected with the outlet of the refrigerant pump 4, the throttling device 5 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 regulating valve is connected with the electronic expansion valve in parallel, and the throttling device has the function of regulating flow in a wide range;
the inlet of the end evaporator 6 is connected to the outlet of the throttle means 5, and the outlet of the end evaporator 6 is connected to the return air port of the compressor 1.
The utility model discloses an air conditioning system of second kind compares first air conditioning system and has increased the enhanced vapor injection mode.
When the refrigeration cycle mode is operated, the bypass valve 7 is opened, and the bypass valve 8 is closed; the circulating loop is formed by a compressor 1, a condenser 2, a main path of an economizer 9, a bypass valve 7, a throttling device 5 and a tail end evaporator 6, an auxiliary path throttling device 10, an auxiliary path of the economizer 9 and an air jet port of the compressor 1 form an air jet loop, and a bypass part of refrigerant at the outlet of the bypass valve 7 is directly conveyed to a motor cooling port of the compressor 1 for cooling a motor of the compressor.
When the compressor operates in the mixed circulation mode, the bypass valve 7 is closed, the bypass valve 8 is closed, the circulation loop is formed by the compressor 1, the condenser 2, the main path of the economizer 9, the refrigerant pump 4, the throttling device 5 and the tail end evaporator 6, the auxiliary path throttling device 10, the auxiliary path of the economizer 9 and the air jet port of the compressor 1 form an air jet loop, and a part of refrigerant is bypassed at the outlet of the refrigerant pump 4 and is directly conveyed to the motor cooling port of the compressor 1 for cooling the motor of the compressor.
In the liquid pump heat pipe circulation mode, the bypass valve 7 is closed, the bypass valve 8 is opened, and the circulation circuit condenser 2, the main path of the economizer 9, the refrigerant pump 4, the throttle device 5, the end evaporator 6, and the bypass valve 8 constitute a circulation circuit.
In the gravity heat pipe circulation mode, the bypass valve 7 is opened, the bypass valve 8 is opened, and the circulation circuit is constituted by the condenser 2, the main path of the economizer 9, the bypass valve 7, the throttle device 5, the end evaporator 6, and the bypass valve 8.
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 (8)
1. An air conditioning system with natural cooling comprises an outdoor module and an indoor module; the outdoor module comprises a compressor, a condenser, an accumulator and a refrigerant pump; the indoor module comprises a throttling device and a tail end evaporator; 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 and a cooling motor port; the inlet of the condenser is connected with the exhaust port of the compressor; an inlet of the liquid storage device is connected with an outlet of the condenser; the inlet of the refrigerant pump is connected with the outlet of the liquid accumulator; the inlet of the throttling device is connected with the outlet of the refrigerant pump; the inlet of the tail end evaporator is connected with the outlet of the throttling device, and the outlet of the tail end evaporator is connected with the return air port of the compressor; wherein the outdoor module further comprises a bypass valve and a bypass valve;
the inlet and the outlet of the 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 bypass valve and is directly conveyed to a motor cooling port of the compressor;
the inlet and outlet of the bypass valve are connected to the discharge and return ports of the compressor, respectively.
2. The air conditioning system with natural cooling of claim 1, wherein the throttling device 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.
3. The air conditioning system with natural cooling of claim 1, wherein the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
4. The air conditioning system with natural cooling of claim 1, wherein the outdoor module further comprises a dry filter and a sight glass connected between the accumulator and the refrigerant pump.
5. An air conditioning system with natural cooling comprises an outdoor module and an indoor module; the outdoor module comprises a compressor, a condenser, an accumulator and a refrigerant pump; the indoor module comprises a throttling device and a tail end evaporator; 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; an inlet of the liquid storage device is connected with an outlet of the condenser; the inlet of the refrigerant pump is connected with the outlet of the liquid accumulator; the inlet of the throttling device is connected with the outlet of the refrigerant pump; the inlet of the tail end evaporator is connected with the outlet of the throttling device, and the outlet of the tail end evaporator is connected with the return air port of the compressor; the outdoor module is characterized by also comprising a bypass valve, an economizer and a bypass throttling device;
the inlet and the outlet of the 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 bypass valve and is directly conveyed to a motor cooling port of the compressor;
the inlet and the outlet of the bypass valve are respectively connected with the exhaust port and the return port of the compressor;
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 liquid storage device; the bypass outlet of the economizer is connected with the air jet of the compressor;
and two ends of the auxiliary path throttling device are respectively connected with an auxiliary path inlet and a main path inlet of the economizer.
6. The air conditioning system with natural cooling of claim 5, wherein the throttling device 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.
7. The air conditioning system with natural cooling of claim 5, wherein the condenser is an air-cooled condenser, a water-cooled condenser or an evaporative condenser.
8. The air conditioning system with free cooling of claim 5, wherein the outdoor module further comprises a dry filter and a sight glass connected between the economizer and the accumulator.
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| CN110160185A (en) * | 2019-06-10 | 2019-08-23 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of band natural cooling type air-conditioning system and its control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110160185A (en) * | 2019-06-10 | 2019-08-23 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of band natural cooling type air-conditioning system and its control system |
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