CN211695237U - Air conditioning system for underground command center - Google Patents
Air conditioning system for underground command center Download PDFInfo
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- CN211695237U CN211695237U CN201922071126.9U CN201922071126U CN211695237U CN 211695237 U CN211695237 U CN 211695237U CN 201922071126 U CN201922071126 U CN 201922071126U CN 211695237 U CN211695237 U CN 211695237U
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Abstract
The utility model discloses an air conditioning system for underground command center, including air conditioning room, controller, cooling tower, exhaust unit, exhaust pipe, air inlet unit, air-supply line, new trend processing unit, blast pipe, hierarchical cold water unit, condenser tube, first refrigerated water pipe and second refrigerated water pipe, the cooling tower passes through the condenser tube and is connected with hierarchical cold water unit, new trend processing unit passes through condenser tube and first refrigerated water pipe respectively and is connected with hierarchical cold water unit, hierarchical cold water unit passes through first refrigerated water pipe and second refrigerated water pipe respectively and is connected with the air conditioner in the air conditioning room, the air inlet unit passes through the air-supply line and is connected with new trend processing unit, new trend processing unit and air conditioning room intercommunication, exhaust unit and underground command center intercommunication; the utility model provides an air conditioning system for underground command center, its hierarchical cold water unit can provide the cold water of hot water and two kinds of different temperatures simultaneously, and the subregion of the underground command center of being convenient for is adjusted.
Description
Technical Field
The utility model relates to an air conditioning technology field, in particular to an air conditioning system for underground command center.
Background
At present, the underground command center has large scale and large longitudinal span and transverse span of space, so that the energy consumption for conveying air and water is high; in addition, the working conditions of all areas of the underground command center are different, the requirements on the environment are different, the air conditioner operation requirements in different air conditioning rooms are also different, the air conditioners in some air conditioning rooms need to be kept in a full-year dehumidification working state, the local areas need to be cooled and refrigerated, and part of the areas need to be heated.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art's weak point, the utility model aims to provide an air conditioning system for underground command center, hierarchical cold water unit can provide hot water and the cold water of two kinds of different temperatures simultaneously, and the subregion of underground command center of being convenient for is adjusted.
In order to achieve the purpose, the utility model adopts the following technical proposal:
an air conditioning system for an underground command center comprises an air conditioning room and a controller, and further comprises a cooling tower, an exhaust unit, an exhaust pipe, an air inlet unit, an air inlet pipe, a fresh air processing unit, an air supply pipe, a grading cold water unit, a cooling water pipe, a first freezing water pipe and a second freezing water pipe, the cooling tower is connected with the grading cold water unit through the cooling water pipe, the fresh air processing unit is respectively connected with the grading cold water unit through the cooling water pipe and the first freezing water pipe, the grading cold water unit is respectively connected with an air conditioner in an air conditioning room through the first freezing water pipe and the second freezing water pipe, the air inlet unit is connected with the fresh air processing unit through the air inlet pipe, the fresh air processing unit is communicated with an air conditioning room through the air supply pipe, and the air exhaust unit is communicated with an underground command center through the air exhaust pipe.
The air conditioning system for the underground command center is characterized in that the air exhaust unit comprises an exhaust fan and an air exhaust diffusion chamber, the exhaust pipe comprises a first exhaust pipe and a second exhaust pipe, the exhaust fan is communicated with the underground command center through the first exhaust pipe, and the exhaust fan is communicated with the air exhaust diffusion chamber through the second exhaust pipe.
The air conditioning system for the underground command center is characterized in that the air inlet unit comprises an air inlet diffusion chamber and an air inlet machine, the air inlet pipe comprises a first air inlet pipe and a second air inlet pipe, the air inlet diffusion chamber is connected with the air inlet machine through the first air inlet pipe, and the air inlet machine is connected with the fresh air processing unit through the second air inlet pipe.
The air conditioning system for the underground command center is characterized in that the fresh air processing unit comprises a fresh air processing mechanism and an air feeder, the air feeder comprises a first air feeder pipe and a second air feeder pipe, the fresh air processing mechanism is connected with the grading cold water unit through a cooling water pipe and a first freezing water pipe respectively, the fresh air processing mechanism is connected with the air feeder through the first air feeder pipe, and the air feeder is communicated with an air conditioning room through the second air feeder pipe.
The air conditioning system for the underground command center is characterized in that the cooling water pipe comprises a first water pipe, a second water pipe, a third water pipe and a fourth water pipe, the first freezing water pipe comprises a fifth water pipe, a sixth water pipe and a seventh water pipe, and the second freezing water pipe comprises an eighth water pipe and a ninth water pipe.
The air conditioning system for the underground command center is characterized in that the grading cold water unit comprises a cooling water tank, a freezing water tank and a grading cold water mechanism, the grading cold water mechanism is connected with the cooling water tank through the first water pipe, the cooling water tank is connected with a high-temperature cooling tower through the second water pipe, the cooling water tank is connected with a fresh air treatment mechanism through the third water pipe, and the cooling water tank is connected with an air conditioner in an air conditioning room through the fourth water pipe; the grading water cooling mechanism is connected with a freezing water tank through the fifth water pipe and the eighth water pipe respectively, the freezing water tank is connected with the fresh air processing mechanism through the sixth water pipe, and the freezing water tank is connected with an air conditioner in an air conditioner room through the seventh water pipe and the ninth water pipe respectively.
A air conditioning system for secret command center in, new trend processing mechanism is including first compressor, heating coil, filter and the cold coil pipe of table that end to end pipe connection in proper order, heating coil pipe passes through the third water pipe and is connected with cooling water pool, the cold coil pipe of table passes through the sixth water pipe and is connected with freezing water pool.
The graded water cooling mechanism comprises an evaporator, a first condenser, a second compressor, a third compressor, a first expansion valve and a second expansion valve, wherein the second compressor, the first condenser, the first expansion valve and the evaporator are sequentially connected end to end through pipelines, and the third compressor, the second condenser, the second expansion valve and the evaporator are sequentially connected end to end through pipelines; the first condenser and the second condenser are connected with a cooling water pool through a first water pipe, and the evaporator is connected with the freezing water pool through a fifth water pipe and an eighth water pipe respectively.
Has the advantages that:
the utility model provides an air conditioning system for underground command center, it has following advantage:
(1) compared with the air conditioning system in the prior art, the air conditioning system for underground commanding is simple in structure, small in occupied space, convenient to install in the underground space, capable of reducing installation amount of projects, improving installation efficiency and reducing installation cost;
(2) the grading cold water unit can provide hot water for a high-temperature cooling tower, a fresh air processing mechanism and an air conditioner in an air conditioning room, can also provide cold water for the fresh air processing mechanism and provide two kinds of cold water with different temperatures for the air conditioner in the air conditioning room, meets the requirements of working conditions in different areas of an underground command center and the operation requirements of the air conditioners in different air conditioning rooms, and is convenient for the zonal adjustment of the underground command center; and the conveying pipe diameter is reduced, and the installation amount and the conveying energy consumption of the project are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning system for an underground command center according to the present invention;
FIG. 2 is an enlarged view of part A provided by the present invention;
fig. 3 is a schematic structural diagram of a graded cooling water mechanism provided by the present invention;
fig. 4 is a schematic diagram illustrating the operation of the air conditioning system provided by the present invention;
fig. 5 is an enlarged view of the portion B provided by the present invention.
Description of the main element symbols: 1-cooling tower, 2-air exhaust unit, 21-air exhaust diffusion chamber, 22-air exhaust fan, 3-air inlet unit, 31-air inlet diffusion chamber, 32-air inlet fan, 4-fresh air processing unit, 41-first compressor, 42-heating coil, 43-filter, 44-surface cooling coil, 45-blower, 5-graded cold water unit, 51-cooling water tank, 52-freezing water tank, 53-graded cold water mechanism, 531-evaporator, 532-first condenser, 533-second condenser, 534-second compressor, 535-third compressor, 536-first expansion valve, 537-second expansion valve, 61-first water pipe, 62-second water pipe, 63-third water pipe, 64-fourth water pipe, 65-a fifth water pipe, 66-a sixth water pipe, 67-a seventh water pipe, 68-an eighth water pipe and 69-a ninth water pipe.
Detailed Description
The utility model provides an air conditioning system for underground command center, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
Referring to fig. 1 to 5, the present invention provides an air conditioning system for an underground command center, comprising an air conditioning room and a controller, wherein the air conditioning system for the underground command center further comprises a cooling tower 1, an air exhaust unit 2, an air exhaust pipe, an air intake unit 3, an air intake pipe, a fresh air processing unit 4, an air supply pipe, a graded cooling water unit 5, a cooling water pipe, a first chilled water unit 5 and a second chilled water unit, the cooling tower 1 is connected with the graded cooling water unit 5 through the cooling water pipe, the fresh air processing unit 4 is connected with the graded cooling water unit 5 through the cooling water pipe and the first chilled water pipe, the graded cooling water unit 5 is connected with an air conditioner in the air conditioning room through the first chilled water pipe and the second chilled water pipe, the air intake unit 3 is connected with the fresh air processing unit 4 through the air intake pipe, the fresh air processing unit 4 is communicated with the air conditioning room through the air supply pipe, and the exhaust unit 2 is communicated with an underground command center through the exhaust pipe.
The working principle of the utility model is as follows: fresh air of an external environment is fed into a fresh air processing unit 4 through an air inlet unit 3, the fresh air processing unit 4 processes the fresh air according to the environment requirements of different air conditioning rooms of an underground command center, the processed fresh air is fed into the air conditioning rooms through an air supply pipe, a grading cold water unit 5 provides hot water of 50 ℃ for the fresh air processing unit 4 through a cooling water pipe, cold water of 7 ℃ is provided for the fresh air processing unit 4 through a first freezing water pipe, the grading cold water unit 5 provides hot water of 50 ℃ and cold water of 7 ℃ for air conditioners in the air conditioning rooms through the cooling water pipe and the first freezing water pipe at the same time, and provides hot water of 50 ℃ and cold water of 12 ℃ for the air conditioners in the air conditioning rooms through the cooling water pipe and a second freezing water pipe respectively; namely, the grading cold water unit 5 can provide hot water and two kinds of cold water with different temperatures, can meet the requirements of working conditions in different areas of the underground command center and the operation requirements of air conditioners in different air conditioning rooms, and is convenient for zonal adjustment of the underground command center; the fresh air enters the air conditioning room and returns to the underground command center, is exhausted into the exhaust diffusion chamber 21 through the exhaust pipe and the exhaust fan 22, and is exhausted out of the outdoor environment through the exhaust diffusion chamber 21.
Further, referring to fig. 1 and 4, the exhaust unit 2 includes an exhaust fan 22 and an exhaust diffusion chamber 21, the exhaust duct includes a first exhaust duct and a second exhaust duct, the exhaust fan 22 is communicated with the underground command center through the first exhaust duct, and the exhaust fan 22 is communicated with the exhaust diffusion chamber 21 through the second exhaust duct; the air in the underground command center is exhausted to the exhaust diffusion chamber 21 through the exhaust fan 22 and then exhausted to the external environment through the exhaust diffusion chamber 21, so that the underground command center can form an effective air intake and exhaust circulation and can exhaust pollutants in the air to the outside of the underground command center.
Further, referring to fig. 1 and 4, the air intake unit 3 includes an air intake diffusion chamber 31 and an air intake blower 32, the air intake pipe includes a first air intake pipe and a second air intake pipe, the air intake diffusion chamber 31 is connected to the air intake blower 32 through the first air intake pipe, and the air intake blower 32 is connected to the fresh air processing unit 4 through the second air intake pipe; fresh air of the external environment firstly enters the air inlet diffusion chamber 31, then is sent into the fresh air processing unit 4 through the air inlet fan 32, and is provided for the air-conditioning room and the underground command center through the fresh air processing unit 4.
Further, referring to fig. 1 and 4, the fresh air processing unit 4 includes a fresh air processing mechanism and a blower 45, the blower includes a first blower pipe and a second blower pipe, the fresh air processing mechanism is connected to the graded cold water unit 5 through a cooling water pipe and a first chilled water pipe, the fresh air processing mechanism is connected to the blower 45 through the first blower pipe, and the blower 45 is communicated with the air-conditioned room through the second blower pipe; the fresh air processing mechanism processes fresh air according to the environmental requirements of different areas and the environmental requirements of different air-conditioning rooms, and the processed fresh air is sent into the air-conditioning rooms through the blower 45.
Further, referring to fig. 1, 4 and 5, the cooling water pipes include a first water pipe 61, a second water pipe 62, a third water pipe 63 and a fourth water pipe 64, the first chilled water pipe includes a fifth water pipe 65, a sixth water pipe 66 and a seventh water pipe 67, the second chilled water pipe includes an eighth water pipe 68 and a ninth water pipe 69; the first water pipe 61, the second water pipe 62, the third water pipe 63, the fourth water pipe 64, the fifth water pipe 65, the sixth water pipe 66, the seventh water pipe 67, the eighth water pipe 68 and the ninth water pipe 69 respectively comprise a water inlet pipe and a water outlet pipe, the water inlet pipes and the water outlet pipes of the second water pipe 62, the third water pipe 63, the fourth water pipe 64, the sixth water pipe 66, the seventh water pipe 67 and the ninth water pipe 69 are respectively provided with a water regulating valve, and the water regulating valves are electrically connected with the controller.
Further, referring to fig. 1 and 3, the graded cold water unit 5 includes a cooling water tank 51, a freezing water tank 52 and a graded cold water mechanism 53, the graded cold water mechanism 53 is connected to the cooling water tank 51 through the first water pipe 61, the cooling water tank 51 is connected to the high temperature cooling tower 1 through the second water pipe 62, the cooling water tank 51 is connected to the fresh air processing mechanism through the third water pipe 63, and the cooling water tank 51 is connected to the air conditioner in the air conditioning room through the fourth water pipe 64; the grading cold water mechanism 53 is connected with the freezing water tank 52 through the fifth water pipe 65 and the eighth water pipe 68 respectively, the freezing water tank 52 is connected with the fresh air processing mechanism through the sixth water pipe 66, and the freezing water tank 52 is connected with an air conditioner in an air conditioning room through the seventh water pipe 67 and the ninth water pipe 69 respectively.
Further, referring to fig. 2, the fresh air processing mechanism includes a first compressor 41, a heating coil 42, a filter 43, and a surface cooling coil 44, which are sequentially connected by end-to-end pipelines, the heating coil 42 is connected to the cooling water tank 51 through a third water pipe 63, and the surface cooling coil 44 is connected to the freezing water tank 52 through a sixth water pipe 66.
The air inlet diffusion chamber 31 is internally provided with a first temperature sensor and a first humidity sensor, the air conditioning room is internally provided with a second temperature sensor and a second humidity sensor, the first temperature sensor and the first humidity sensor respectively feed back a detected outdoor temperature value and a detected outdoor humidity value to the controller, and the controller calculates an outdoor enthalpy value according to the outdoor temperature value and the outdoor humidity value; the second temperature sensor and the second humidity sensor respectively feed back the detected indoor temperature value and the detected indoor humidity value to the controller, and the controller calculates the indoor enthalpy value according to the indoor temperature value and the indoor humidity value; the controller compares the indoor enthalpy value with the outdoor enthalpy value; when the outdoor enthalpy is larger than the indoor enthalpy, the fresh air processing unit 4 starts a cooling and dehumidifying mode, fresh air is cooled and dehumidified in a surface cooling coil 44 in the fresh air processing unit 4 through chilled water of 7 ℃ provided by a graded cold water unit 5, and then the fresh air is sent into an air-conditioning room; when the outdoor enthalpy is smaller than the indoor enthalpy, the fresh air starts the ventilation mode, and the fresh air is directly sent into an air-conditioning room after being filtered by the filter 43 of the fresh air processing unit 4; in the ventilation mode, when the first temperature sensor detects that the outdoor temperature is lower than 5 ℃, a fresh air heating mode is started, and fresh air is heated by hot water at 50 ℃ provided by the graded cold water unit 5 through a heating coil 42 in the fresh air processing unit 4 and then is sent to an air-conditioning room.
Further, a preset value of the indoor temperature in the air-conditioning room is preset in the controller, the second temperature sensor feeds back the indoor temperature value detected in real time to the controller, and if the indoor temperature value is larger than the preset value, the controller firstly controls and increases the water flow of cold water provided by the grading cold water unit for the surface cooling coil pipe, and then controls the air speed of the air feeder to be increased; if the indoor temperature value is less than the preset value, the controller firstly controls and reduces the water flow of cold water provided by the grading cold water unit for the surface cooling coil pipe, and then controls the air speed of the air feeder to be reduced; if the indoor temperature value is equal to a preset value, the controller controls the grading cold water unit, and the working states of the surface cooling coil and the air feeder are kept unchanged.
The cooling water pool 51 delivers hot water of 50 ℃ to the cooling tower 1 through a second water pipe 62, the cooling water pool 51 provides hot water of 50 ℃ to the air conditioner in the air-conditioning room through a third water pipe 63, and the cooling water pool 51 provides hot water of 50 ℃ to the heating coil 42 in the fresh air processing mechanism through a fourth water pipe 64; the freezing water tank 52 provides cold water with the temperature of 7 ℃ to the surface cooling coil 44 in the fresh air processing mechanism through a sixth water pipe 66; for the air-conditioned room with personnel working in the underground command center, the temperature reduction and dehumidification are needed, and the freezing water tank 52 provides cold water with the temperature of 7 ℃ for the air-conditioned room through a seventh water pipe 67; for the air-conditioned room for storing the equipment and the air-conditioned room for communication, only cooling is required, and the cold water tank 52 supplies cold water of 12 c to the air-conditioned room through the ninth water pipe 69.
Further, referring to fig. 3, the graded cold water mechanism 53 includes an evaporator 531, a first condenser 532, a second condenser 533, a second compressor 534, a third compressor 535, a first expansion valve 536, and a second expansion valve 537, the second compressor 534, the first condenser 532, the first expansion valve 536, and the evaporator 531 are sequentially connected end to end through a pipeline, and the third compressor 535, the second condenser 533, the second expansion valve 537, and the evaporator 531 are sequentially connected end to end through a pipeline; the first condenser 532 and the second condenser 533 are connected to the cooling water reservoir 51 through a first water pipe 61, and the evaporator 531 is connected to the freezing water reservoir 52 through a fifth water pipe 65 and an eighth water pipe 68, respectively.
In this embodiment, the evaporator 531 is a four-pipe evaporator 531, and can provide chilled water with a water supply temperature of 7 ℃ and a water return temperature of 12 ℃ and chilled water with a water supply temperature of 12 ℃ and a water return temperature of 17 ℃, so as to facilitate zonal adjustment of an underground command center; the water supply temperature of the first condenser 532 and the water return temperature of the second condenser 533 are 50 ℃, the water return temperature is 35 ℃, the high-temperature cooling water is conveyed by adopting the temperature difference of 15 ℃, the conveying pipe diameter is reduced, the installation is facilitated, and the conveying energy consumption is 20% less than that of the conventional conveying with the temperature difference of 5 ℃; in addition, under the condition that the energy efficiency is not changed, the volume of the condenser is greatly reduced, the occupied space of the grading cold water unit is reduced, and the underground space is convenient to install.
It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.
Claims (8)
1. An air conditioning system for an underground command center comprises an air conditioning room and a controller, and is characterized by further comprising a cooling tower, an air exhaust unit, an exhaust pipe, an air inlet unit, an air inlet pipe, a fresh air processing unit, an air supply pipe, a grading cold water unit, a cooling water pipe, a first freezing water pipe and a second freezing water pipe; the cooling tower passes through condenser tube and hierarchical cold water unit connection, the new trend processing unit passes through respectively condenser tube with first freezing water pipe and hierarchical cold water unit connection, hierarchical cold water unit passes through respectively first freezing water pipe and second freezing water pipe are connected with the air conditioner in the air conditioner room, the air inlet unit passes through the air-supply line is connected with new trend processing unit, new trend processing unit passes through blast pipe and air conditioner room intercommunication, the unit of airing exhaust passes through exhaust pipe and underground command center intercommunication.
2. The air conditioning system of claim 1, wherein the exhaust unit comprises an exhaust fan and an exhaust diffusion chamber, the exhaust duct comprises a first exhaust duct and a second exhaust duct, the exhaust fan is communicated with the underground command center through the first exhaust duct, and the exhaust fan is communicated with the exhaust diffusion chamber through the second exhaust duct.
3. The air conditioning system for the underground command center as claimed in claim 1, wherein the air intake unit comprises an air intake diffusion chamber and an air intake blower, the air intake pipe comprises a first air intake pipe and a second air intake pipe, the air intake diffusion chamber is connected with the air intake blower through the first air intake pipe, and the air intake blower is connected with the fresh air processing unit through the second air intake pipe.
4. The air conditioning system for the underground command center as claimed in claim 1, wherein the fresh air processing unit comprises a fresh air processing mechanism and a blower, the blower comprises a first blower pipe and a second blower pipe, the fresh air processing mechanism is connected with the graded cooling water unit through a cooling water pipe and a first chilled water pipe, the fresh air processing mechanism is connected with the blower through the first blower pipe, and the blower is communicated with the air conditioning room through the second blower pipe.
5. The air conditioning system for an underground command center according to claim 1, wherein the cooling water pipes comprise a first water pipe, a second water pipe, a third water pipe and a fourth water pipe, the first chilled water pipe comprises a fifth water pipe, a sixth water pipe and a seventh water pipe, and the second chilled water pipe comprises an eighth water pipe and a ninth water pipe.
6. The air conditioning system for the underground command center as claimed in claim 5, wherein the grading cold water unit comprises a cooling water tank, a freezing water tank and a grading cold water mechanism, the grading cold water mechanism is connected with the cooling water tank through the first water pipe, the cooling water tank is connected with the high-temperature cooling tower through the second water pipe, the cooling water tank is connected with the fresh air treatment mechanism through the third water pipe, and the cooling water tank is connected with the air conditioner in the air conditioning room through the fourth water pipe; the grading water cooling mechanism is connected with a freezing water tank through the fifth water pipe and the eighth water pipe respectively, the freezing water tank is connected with the fresh air processing mechanism through the sixth water pipe, and the freezing water tank is connected with an air conditioner in an air conditioner room through the seventh water pipe and the ninth water pipe respectively.
7. The air conditioning system for the underground command center according to claim 6, wherein the fresh air processing mechanism comprises a first compressor, a heating coil, a filter and a surface cooling coil which are sequentially connected through an end-to-end pipeline, the heating coil is connected with the cooling water tank through a third water pipe, and the surface cooling coil is connected with the freezing water tank through a sixth water pipe.
8. The air conditioning system for the underground command center according to claim 6, wherein the graded water cooling mechanism comprises an evaporator, a first condenser, a second compressor, a third compressor, a first expansion valve and a second expansion valve, the second compressor, the first condenser, the first expansion valve and the evaporator are sequentially connected end to end through pipelines, and the third compressor, the second condenser, the second expansion valve and the evaporator are sequentially connected end to end through pipelines; the first condenser and the second condenser are connected with a cooling water pool through a first water pipe, and the evaporator is connected with the freezing water pool through a fifth water pipe and an eighth water pipe respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922071126.9U CN211695237U (en) | 2019-11-26 | 2019-11-26 | Air conditioning system for underground command center |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922071126.9U CN211695237U (en) | 2019-11-26 | 2019-11-26 | Air conditioning system for underground command center |
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| CN211695237U true CN211695237U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059656A (en) * | 2019-11-26 | 2020-04-24 | 广东申菱环境系统股份有限公司 | Air conditioning system for underground command center and control method thereof |
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2019
- 2019-11-26 CN CN201922071126.9U patent/CN211695237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059656A (en) * | 2019-11-26 | 2020-04-24 | 广东申菱环境系统股份有限公司 | Air conditioning system for underground command center and control method thereof |
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