Data center machine room environment temperature control system and method based on indirect evaporative cooling technology

Abstract

The invention discloses a data center machine room environment temperature control system and method based on an indirect evaporative cooling technology, and the system comprises an indirect evaporative cooling air conditioner machine room, a buffer room and a data center machine room which are sequentially arranged in each floor. A plurality of indirect evaporative cooling air conditioning units are arranged in the indirect evaporative cooling air conditioning machine room, air outlet pipelines of the indirect evaporative cooling air conditioning units are communicated with an exhaust shaft, and the air supply pipeline and the air return pipeline extend into the buffer room; a machine cabinet, electronic equipment, an open type cold air supply channel, a closed type hot air return channel and a fresh air system are arranged in the data center machine room, and an air return pipeline of the indirect evaporative cooling air conditioning unit in the buffer room is communicated with the transverse hot air return channel. The data center machine room and the electronic equipment in the data center machine room can be cooled through the indirect evaporative cooling air conditioning unit in multiple floors, energy consumption is reduced, the environment temperature in the data center machine room is changed, and damage to the electronic equipment caused by water leakage is avoided.

Description

Technical Field

[0001] The present invention relates to the field of data center environment temperature control, and in particular to a data center computer room environment temperature control system and method based on indirect evaporative cooling technology. Background Art

[0002] With the rapid development of emerging technologies such as big data, cloud computing and the Internet of Things, the demand for transmission, storage and processing of massive data generated in the process of their technical application has arisen, and the construction of data centers has come into being. Data centers are equipped with a large number of electronic devices, which consume a lot of electricity and generate a lot of heat. Electronic devices have high requirements for the ambient temperature of their stable operation. In order to ensure the normal and stable operation of electronic information and equipment, it is necessary to monitor and control their physical environment through a series of environmental temperature monitoring equipment, including different forms of refrigeration equipment. These environmental monitoring equipment will also consume a lot of electricity. In order to reduce the energy consumption of data centers. At present, indirect evaporative cooling technology has been widely used in data centers in many regions, especially in the north. Indirect evaporative cooling technology can effectively utilize outdoor ambient temperature resources to reduce building energy consumption, but its equipment is generally installed on the outdoor roof, with air intake on the facade, exhaust on the top, and return air on the remaining two sides. This will cause the distance of the return air duct to be too long, affecting the cooling effect. When the air intake and exhaust distance are too close, the efficiency of outdoor temperature on heat exchange is affected. In addition, the equipment cannot be placed in multiple layers, and the space utilization rate of the outdoor roof is low. Therefore, the computer rooms of traditional data centers that apply indirect evaporative cooling technology are often only on the top one or two floors of multi-story buildings, and this energy-saving technology cannot be applied to the lower floors of multi-story buildings. At the same time, the previous indirect evaporative cooling technology adopted the underfloor air supply form or diffuse air supply form with closed cold channels. The underfloor air supply form causes the computer room except the cabinet area to be a high-temperature heat dissipation area, which is not a good comfort experience for the operation and maintenance operators entering the computer room and poses certain hazards to human health. The diffuse air supply form causes local mixing of cold and hot air flows, resulting in poor cooling effect and easy generation of local hot spots. Summary of the invention

[0003] The purpose of the present invention is to provide a data center computer room environmental temperature control system and method based on indirect evaporative cooling technology, so as to solve the problem that the computer room of the traditional indirect evaporative cooling technology is set on the roof with poor heat exchange efficiency and can only cool the data center computer room within two floors below the roof, resulting in a narrow application range; and solve the problem that the traditional indirect evaporative cooling technology uses the underfloor air supply form of closed cold channel to cool the data center equipment, but the cooling effect of the ambient temperature in the room is poor, resulting in maintenance personnel being unable to enter the data center computer room for a long time to perform equipment maintenance.

[0004] In order to solve the above technical problems, the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, comprising an indirect evaporative cooling air-conditioning room, a buffer room and a data center computer room which are arranged in sequence on each floor of a building, and the indirect evaporative cooling air-conditioning rooms on each floor are located on the same side; a plurality of indirect evaporative cooling air-conditioning units are arranged in the indirect evaporative cooling air-conditioning room, and the indirect evaporative cooling air-conditioning units have an air inlet, an air supply duct, a return air duct and an air outlet duct, and the indirect evaporative cooling air-conditioning room is provided with a vent on the wall corresponding to the air inlet, a vent corresponding to the air outlet duct An exhaust shaft is connected to the wall at the location, the exhaust shaft is arranged vertically and connected to each floor of the building, the supply air duct and the return air duct extend into the buffer room; the data center computer room is arranged with cabinets and electronic equipment thereon, the two rows of cabinets are a group arranged back to back, the data center computer room has an open cold supply air channel and a closed hot return air channel, the closed hot return air channel includes a horizontal hot return air channel in the ceiling and a plurality of vertical hot return air channels connected and arranged below the horizontal hot return air channel, the horizontal hot return air channel extends into the buffer room, and the indirect evaporative cooling air conditioning unit in the buffer room The return air duct is connected with the horizontal hot return air channel, each of the vertical hot return air channels is aligned with a group of cabinets and is sealed in the middle area of ​​each group of cabinets. A fresh air system is arranged in the computer room of the data center, and the fresh air system includes a fan, an air duct, a fresh air outlet and a pressure difference sensor. The fan is arranged on the outdoor roof of the building, and the air duct and the fan are vertically extended into each floor of the building. The air duct conveys fresh air to the computer room of the data center on each floor through the fresh air outlet connected thereto; the indirect evaporative cooling air-conditioning unit inhales outdoor fresh air through its air inlet through the ventilating port of the indirect evaporative cooling air-conditioning room. The air, after heat exchange and refrigeration of the hot air flow organization in the return air duct of the indirect evaporative cooling air-conditioning unit, uses its supply air duct to generate the cold air flow organization to cool the data center room, the cabinets inside it, and the electronic equipment thereon. The hot air flow organization in the data center room and the hot air flow organization generated by the electronic equipment on the cabinet are sent back to the indirect evaporative cooling air-conditioning unit through the closed hot return air channel and the return air duct, and heat exchange is carried out in the air heat exchanger in the indirect evaporative cooling air-conditioning unit, and the hot air after heat exchange is discharged into the exhaust shaft through its outlet duct, and the hot air is discharged outside the building through the exhaust port on the exhaust shaft.

[0005] Furthermore, the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, wherein a constant humidity machine is provided in the buffer room for drying or humidifying air, and supply air louvers and return air louvers are provided on the wall between the buffer room and the data center computer room; after the cold air flow organization generated by the air supply duct of the indirect evaporative cooling air-conditioning unit interacts with the dried or humidified air flow, the data center computer room and the cabinets therein and the electronic equipment thereon are cooled and lowered through the above-mentioned supply air louvers, and the hot air flow organization in the data center computer room and the hot air flow organization generated by the electronic equipment on the cabinets are returned to the indirect evaporative cooling air-conditioning unit through the closed hot return air channel, return air louvers and return air ducts, heat exchange is carried out in the air heat exchanger in the indirect evaporative cooling air-conditioning unit, and the hot air after heat exchange is discharged into the exhaust shaft through its outlet duct, and the hot air is discharged outside the building through the exhaust port on the exhaust shaft.

[0006] Furthermore, the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, wherein the constant humidity machine is communicatively connected to the controller of the indirect evaporative cooling air-conditioning unit, and the constant humidity machine dries or humidifies the air according to the instructions of the indirect evaporative cooling air-conditioning unit.

[0007] Furthermore, in the data center computer room environmental temperature control system based on indirect evaporative cooling technology provided by the present invention, a plurality of temperature and humidity sensors are provided in the open cold supply air duct area, the closed return air duct area, and the supply air duct openings and return air duct openings of the indirect evaporative cooling air-conditioning unit. The temperature and humidity sensors are connected to the controller of the indirect evaporative cooling air-conditioning unit to monitor the temperature and humidity of the open cold supply air duct area and the closed return air duct area in the data center computer room in real time and feed back to the controller of the indirect evaporative cooling air-conditioning unit. The controller of the indirect evaporative cooling air-conditioning unit adjusts the refrigeration temperature of the indirect evaporative cooling air-conditioning unit according to the monitored temperature and humidity data and controls the constant humidity machine to dry or humidify the air.

[0008] Furthermore, the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, wherein the air inlet of the indirect evaporative cooling air-conditioning unit is installed with a filter, the air supply duct is installed with an electric control valve and a fire damper, the return air duct is installed with an electric control valve and a fire damper, and the air outlet duct is installed with a fire damper and a check valve, the electric control valve and the fire damper are both connected to the controller of the indirect evaporative cooling air-conditioning unit, the controller of the indirect evaporative cooling air-conditioning unit adjusts the opening of the electric control valve according to the temperature and humidity data monitored in the data center computer room over a period of time to adjust the wind speed and air volume; the fire damper is in a normally open state and automatically closes when a fire is sensed, and the fire damper feeds back a signal of whether a fire has occurred to the controller of the indirect evaporative cooling air-conditioning unit.

[0009] Furthermore, the data center computer room environmental temperature control system based on indirect evaporative cooling technology provided by the present invention, the indirect evaporative cooling air-conditioning units are two indirect evaporative cooling air-conditioning units arranged back to back in a mirror image, and the air inlet is located on the other side of the two indirect evaporative cooling air-conditioning units away from each other.

[0010] Furthermore, in the data center computer room environmental temperature control system based on indirect evaporative cooling technology provided by the present invention, the cross-sectional area of ​​the exhaust shaft on each floor is a stepped shaft that increases from bottom to top according to the exhaust volume.

[0011] In order to solve the above technical problems, the present invention also provides a data center computer room environmental temperature control method based on indirect evaporative cooling technology, in each floor of the building, an indirect evaporative cooling air-conditioning room, a buffer room and a data center computer room are arranged in sequence in the same direction, so that the indirect evaporative cooling air-conditioning room and the data center computer room are arranged on the same floor, the indirect evaporative cooling air conditioner is arranged in the indirect evaporative cooling air conditioner, the data center cabinets and the electronic equipment thereon are arranged in the data center computer room, and the two rows of the cabinets are arranged back to back as a group;

[0012] An exhaust shaft is vertically arranged in an indirect evaporative cooling air conditioning room connected to each floor of the building, and an air outlet duct of the indirect evaporative cooling air conditioning unit is connected to the exhaust shaft;

[0013] A fresh air system is vertically arranged in a data center computer room connected to each floor of the building, a fan of the fresh air system is arranged on the roof outside the building, an air duct connected to the fan is vertically connected to the data center computer room on each floor and a fresh air outlet is arranged, and a pressure difference sensor connected to the fan is arranged in the data center computer room on each floor; an open cold air supply channel and a closed hot return air channel are arranged in the data center computer room, the closed hot return air channel includes a horizontal hot return air channel in the ceiling and a plurality of vertical hot return air channels arranged below the horizontal hot return air channel, the return air duct of the indirect evaporative cooling air conditioning unit extends into the horizontal hot return air channel to be connected thereto, and each of the vertical hot return air channels is aligned with a group of cabinets and is sealed in the middle area of ​​each group of cabinets;

[0014] The supply air duct and return air duct of the indirect evaporative cooling air-conditioning unit are extended into the buffer room, and the cold air flow generated by the indirect evaporative cooling air-conditioning unit is transported to the open cold air supply channel in the data center computer room through the supply air louver on the wall between the buffer room and the data center computer room through the supply air duct, so as to cool the data center computer room, the cabinets therein and the electronic equipment thereon, and the hot air flow organization in the data center computer room and the hot air flow organization generated by the electronic equipment on the cabinet are transported back to the indirect evaporative cooling air-conditioning unit for heat exchange through the closed hot return air channel, the return air louver on the wall between the data center computer room and the buffer room, and the return air duct, and the hot air after heat exchange is discharged into the exhaust shaft through its outlet duct, and the hot air is discharged outside the building through the exhaust outlet on the exhaust shaft.

[0015] Furthermore, the data center computer room environmental temperature control method based on indirect evaporative cooling technology provided in an embodiment of the present invention connects each indirect evaporative cooling air conditioner of each indirect evaporative cooling air-conditioning unit through a communication interface, uses one of the indirect evaporative cooling air conditioners as a master control device, and uses the remaining indirect evaporative cooling air conditioners as slave control devices, so as to perform group control of the indirect evaporative cooling air-conditioning units in the indirect evaporative cooling air-conditioning room.

[0016] Furthermore, in the data center computer room environmental temperature control method based on indirect evaporative cooling technology provided by the embodiment of the present invention, the operating power of the indirect evaporative cooling air-conditioning unit is controlled within a predetermined range; when the temperature and humidity detected by the temperature and humidity sensors in the data center computer room exceed the set temperature and humidity upper limits, and the currently operating indirect evaporative cooling air-conditioning units are close to full load operation, the remaining indirect evaporative cooling air-conditioning units will be turned on, and the operating power of the original indirect evaporative cooling air-conditioning units will be reduced to a certain range; when the temperature and humidity detected by the temperature and humidity sensors in the data center computer room exceed the set temperature and humidity lower limits, if one of the currently operating indirect evaporative cooling air-conditioning units is operating at low load, the load of the indirect evaporative cooling air-conditioning unit will be cut off and shut down, and the remaining indirect evaporative cooling air-conditioning units that have been operating will increase their operating power to receive the load.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided by the present invention arranges the indirect evaporative cooling air-conditioning room, the buffer room and the data center computer room in sequence in the same direction on each floor of the building, thereby transferring the indirect evaporative cooling air-conditioning traditionally set on the outdoor roof of the building to the indirect evaporative cooling air-conditioning room on the same floor of the data center computer room, and the indirect evaporative cooling air-conditioning on the same floor on each floor evenly transports the cold air flow organization to the open cold supply air channel of the data center computer room on the same floor through the air supply louvers of the buffer room, so as to cool the data center computer room and the cabinets therein and the electronic equipment thereon, and evenly transports the generated hot air flow organization back to the indirect evaporative cooling air-conditioning unit through the closed hot return air channel and the return air louvers for heat exchange and refrigeration, and discharges the hot air after heat exchange into the exhaust shaft through the air outlet duct, and then passes through the exhaust shaft The exhaust vents discharge hot air outside the building, thereby realizing cooling of the data center computer room on any floor. By changing the application mode, control method and airflow organization and closed isolation method of the refrigeration equipment in the data center computer room, the electric energy consumed for processing the heat generated by the operation of the electronic equipment on the cabinets in the data center computer room is reduced, thereby reducing the energy consumption of the data center. It is realized that the data center computer room is arranged on multiple floors and the energy consumption of the data center is reduced by changing the control environment temperature mode. The scope of application of indirect evaporative cooling technology for cooling the data center computer room and reducing energy consumption is expanded, and the limitation of traditional indirect evaporative cooling air conditioners set on the outdoor roof of the building can only cool the environment of the data center on the floors below 2 floors is avoided. Indirect evaporative cooling technology can be applied to each data room in a multi-story building to achieve large-scale energy saving and consumption reduction.

[0019] The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided by the present invention arranges the indirect evaporative cooling air-conditioning unit in the indirect evaporative cooling air-conditioning room, so that the indirect evaporative cooling air-conditioning unit can be flexibly arranged without restriction, and the indirect evaporative cooling air-conditioning unit and the data center computer room can be arranged in close proximity, thereby reducing the loss during the transmission process of the cold air flow organization output by the air conditioner, enhancing the refrigeration effect, and reducing the possibility of local hot spots generated by the cold air flow organization transmitted over long distances. At the same time, the close arrangement increases the temperature difference between the supply and return air, thereby improving the heat exchange efficiency of the indirect evaporative cooling air-conditioning unit and further reducing energy consumption.

[0020] The data center computer room environmental temperature control system and method based on indirect evaporative cooling technology provided by the present invention sets return air louvers on the return air path to organize the hot air flow for uniform transportation, thereby avoiding the problem of uneven air flow organization and accumulation of local hot spots during the hot air flow organization and transportation process, and reducing the probability of fire.

[0021] The data center computer room environmental temperature control system and method based on indirect evaporative cooling technology provided by the present invention improves the closed cold air supply duct under the floor of the data center computer room into an open cold air supply duct, so that while cooling down the cabinets in the data center computer room and the electronic equipment thereon, the data center computer room can also be cooled down, thereby changing the environmental temperature in the data center computer room, avoiding the problem that the closed cold air supply duct has a poor cooling effect on the data center computer room, making it difficult for maintenance personnel to perform maintenance work in the data center computer room, and overcoming the problem that the environmental temperature in the data center computer room is too high and affects the health of maintenance personnel.

[0022] The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided by the present invention isolates the indirect evaporative cooling air-conditioning room and the data center computer room through a buffer room. Water generated during the operation of the indirect evaporative cooling air-conditioning unit is blocked by the wall under the air supply louvers of the buffer room, thereby preventing the water generated during the operation of the indirect evaporative cooling air-conditioning unit from leaking into the data center computer room and causing damage to the electronic equipment therein, thereby ensuring the safe operation of the data center computer room. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the elevation structure of the data center room environment temperature control system based on indirect evaporative cooling technology;

[0024] Figure 2 This is a schematic diagram of the plan structure of the data center room environment temperature control system based on indirect evaporative cooling technology;

[0025] Figure 3 It is a structural schematic diagram of a closed hot return air channel node;

[0026] As shown in the figure:

[0027] 100. Indirect evaporative cooling air-conditioning room, 110. Indirect evaporative cooling air-conditioning unit, 111. Air inlet, 112. Air supply duct, 113. Return air duct, 114. Air outlet duct, 115. Electric control valve, 116. Fire damper, 117. Check valve, 118. Exhaust static pressure box, 120. Exhaust shaft, 121. Exhaust outlet;

[0028] 200, buffer room, 210, constant humidity machine, 220, air supply louver, 230, return air louver;

[0029] 300, data center room, 310, cabinet, 320, open cold air supply channel, 330, closed hot return air channel, 331, vertical hot return air channel, 332, horizontal hot return air channel, 333, closed hot channel door, 340, fresh air system, 341, fan, 342, air duct, 343, fresh air outlet, 344, differential pressure sensor, 350, temperature and humidity sensor;

[0030] 400. Building, 410. Structural columns, 420. Walls, 430. Doors, 440. Ventilation holes, 450. Floors, 451. Structural beams and slabs, 452. Ceilings, 460. Foundation and floor layers. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0032] Please refer to Figures 1 to 3 An embodiment of the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, including an indirect evaporative cooling air-conditioning computer room 100, a buffer room 200 and a data center computer room 300 arranged in sequence on each floor 450 of a building 400, and the indirect evaporative cooling air-conditioning computer room 100 on each floor 450 is located on the same side.

[0033] A plurality of indirect evaporative cooling air-conditioning units 110 are arranged in the indirect evaporative cooling air-conditioning room 100, and the indirect evaporative cooling air-conditioning unit 110 has an air inlet 111, an air supply duct 112, a return air duct 113 and an air outlet duct 114. A vent 440 with structures such as shutters is arranged on the wall 420 corresponding to the air inlet 111 of the indirect evaporative cooling air-conditioning room 100, and an exhaust shaft 120 is connected to the wall 420 corresponding to the air outlet duct 114. The exhaust shaft 120 is arranged vertically and connected to each floor 450 of the building 400. The air supply duct 112 and the return air duct 113 extend into the buffer room 200. One group of indirect evaporative cooling air-conditioning units 110 is two indirect evaporative cooling air-conditioning units arranged back to back in a mirror-like manner. The inner sides of the two indirect evaporative cooling air-conditioning units fitted back to back can be closed with a steel plate, and the outer side serves as a side for the indirect evaporative cooling air-conditioning unit 110 to inhale outdoor fresh air. The air inlet 111 can be located below the side facade of the indirect evaporative cooling air-conditioning unit 110, and a filter is installed to filter the outdoor air inhaled by the indirect evaporative cooling air-conditioning unit 110; the air outlet duct 114 can be located above the front facade of the indirect evaporative cooling air-conditioning unit 110, the air supply duct can be located below the back facade of the indirect evaporative cooling air-conditioning unit 110, and the return air duct 113 can be located in the middle and outer side of the back facade of the indirect evaporative cooling air-conditioning unit 110. The air inlet 111 is separated from the exhaust vent 121 of the exhaust shaft 120 located on the roof and the distance is relatively large, so as to prevent the hot air exhausted through the exhaust shaft 120 from entering the air inlet 111 of the indirect evaporative cooling air conditioning unit 110 in the indirect evaporative cooling air conditioning room 100 through the vent 440. In order to reduce noise, the indirect evaporative cooling air conditioning unit 110 may include an exhaust plenum 118, which is connected to the air outlet duct 114. The hot air sucked from the outside is formed into hot air after passing through the air heat exchanger in the indirect evaporative cooling air conditioning unit 110, and is discharged into the exhaust shaft 120 through the air outlet duct 114 after noise reduction through the exhaust plenum 118.

[0034] The data center room 300 is provided with cabinets 310 and servers and other electronic equipment thereon. The two rows of cabinets 310 are arranged back to back. The data center room 300 has an open cold air supply channel 320 and a closed hot return air channel 330. The closed hot return air channel 330 includes a transverse hot return air channel 332 in the ceiling 452 and a plurality of vertical hot return air channels 331 arranged below the transverse hot return air channel 332. The transverse hot return air channel 332 extends into the buffer room 200. In the buffer room 200, the return air duct 113 of the indirect evaporative cooling air conditioning unit 110 is connected to the transverse hot return air channel 331. 2, each of the vertical hot return air channels 331 is aligned with a group of cabinets 310 and is sealed and arranged in the middle area of ​​each group of cabinets 310. A fresh air system 340 is arranged in the data center room 300, and the fresh air system 340 includes a fan 341, an air duct 342, a fresh air outlet 343 with shutters and a pressure difference sensor 344. The fan 341 is arranged on the outdoor roof of the building 400, and the air duct 342 and the fan 341 are vertically extended into each floor 450 of the building 400. The air duct 342 transports fresh air to the data center room 300 on each floor 450 through the fresh air outlet 343 connected thereto.

[0035] The data center computer room environmental temperature control system based on the indirect evaporative cooling technology provided by the embodiment of the present invention has the following working principle: the indirect evaporative cooling air-conditioning unit 110 inhales outdoor fresh air through its air inlet 111 via the vent 440 of the indirect evaporative cooling air-conditioning room 100, and after heat exchange and cooling the hot air flow organization in the return air duct 113 of the indirect evaporative cooling air-conditioning unit 110, the cold air flow organization generated by the indirect evaporative cooling air-conditioning unit 110 is radiated to the data center computer room 300 and the cabinets 310 therein and the electronic equipment thereon through its air supply duct 112. During cooling, the hot air flow organization in the data center room 300 and the hot air flow organization generated by the electronic equipment on the cabinet 310 are sent back to the indirect evaporative cooling air conditioning unit 110 through the closed hot return air duct 330 and the return air duct 113, and heat is exchanged in the air heat exchanger in the indirect evaporative cooling air conditioning unit 110, and the hot air after heat exchange is discharged into the exhaust shaft 120 through its outlet duct 114, and the hot air flow organization in the data center room 300 is discharged outside the building 400 through the exhaust port 121 on the exhaust shaft 120. At this time, in the data center room 300, the hot air flow organization generated by the electronic equipment during operation flows out through the closed hot return air duct 330, and does not exchange heat with the cold air flow organization in the data center room 300, thereby reducing the ambient temperature in the data center room 300, forming a comfortable temperature suitable for human body, which is convenient for maintenance personnel to perform long-term maintenance work in it.

[0036] The vertical hot return air channel 331 of the closed hot return air channel 330 may include a heat-insulating transparent material sealing plate and a closed hot channel door 333. The heat-insulating transparent material sealing plate may be fixed under the ceiling 452 by means of C-shaped steel and corresponding frames, and the vertical hot return air channel 331 may be surrounded by a block. The hot return air channel 331 may be sealed at the contact point with the cabinet 310 by means of a soft brush or a sealing strip. The closed hot channel door 333 is respectively installed at both ends of the middle channel of the two rows of cabinets 310, and the middle channel is surrounded to form a closed vertical hot return air channel 331, wherein the closed hot channel door 333 is arranged between the basic floor layer 460 and the hot return air channel 331. The horizontal hot return air duct 332 at the suspended ceiling 452 is interconnected with the vertical hot return air duct 331, so that the hot air flow organization enters the horizontal hot return air duct 332 in the suspended ceiling 452 from the vertical hot return air duct 331. The other positions of the suspended ceiling can be separated by aluminum gussets to separate the horizontal hot return air duct 332 above the suspended ceiling from the open cold supply air duct 320 area below the suspended ceiling 452. The suspended ceiling 452 and the horizontal hot return air duct 332 therein can extend into the buffer room 200, that is, the cold air flow organization gathering area and the hot air flow organization gathering area are separated by the open cold supply air duct 320 and the closed hot return air duct 330, so as to ensure that the cold air flow organization delivered by the indirect evaporative cooling air-conditioning unit 110 dissipates heat for the data center room 300 and the cabinets 310 therein and the electronic equipment thereon, and avoid the counter-mixing of the cold air flow organization gathering area and the hot air flow organization gathering area, thereby improving the cooling effect of the data center room 300 and the electronic equipment thereon.

[0037] The front and rear doors of cabinet 310 are both mesh-designed to facilitate the flow of cold air to remove heat from electronic equipment.

[0038] Please refer to Figure 2In order to control the temperature and humidity in the data center computer room 300, the data center computer room environmental temperature control system based on the indirect evaporative cooling technology provided by the embodiment of the present invention is provided with a constant humidity machine 210 in the buffer room 200 for drying or humidifying the air, and a supply air louver 220 and a return air louver 230 are provided on the wall 420 between the buffer room 200 and the data center computer room 300; the cold airflow organization generated by the air supply duct 112 of the indirect evaporative cooling air conditioning unit 110 interacts with the dry or humidified airflow, and then passes through the above-mentioned air supply louver 220 to the data center computer room 300. 00 and the cabinets 310 therein and the electronic equipment thereon are cooled down, and the hot air flow organization in the data center computer room 300 and the hot air flow organization generated by the electronic equipment on the cabinets 310 are sent back to the indirect evaporative cooling air conditioning unit 110 through the closed hot return air channel 330, the return air louver 230, and the return air duct 113, and heat is exchanged in the air heat exchanger in the indirect evaporative cooling air conditioning unit 110, and the hot air after heat exchange is discharged into the exhaust shaft 120 through its outlet duct 114, and the hot air flow organization is discharged outside the building 400 through the exhaust port 121 on the exhaust shaft 120. In order to effectively and uniformly control the humidity and dryness in the data center computer room 300, the data center computer room environmental temperature control system based on the indirect evaporative cooling technology provided by the embodiment of the present invention, the humidistat 210 is communicatively connected with the controller of the indirect evaporative cooling air conditioning unit 110, and the humidistat 210 dries or humidifies the air according to the instructions of the indirect evaporative cooling air conditioning unit 110. By connecting the constant humidity machine 210 to the controller of the indirect evaporative cooling air-conditioning unit 110 for communication, the constant humidity machine 210 can be controlled by the indirect evaporative cooling air-conditioning unit 110 to avoid the humidity or dryness provided by the constant humidity machine 210 independently controlling not matching the humidity and dryness in the data center room 300, thereby affecting the operation of electronic equipment and the ambient temperature and humidity in the data center room 300.

[0039] Please refer to Figure 2In order to effectively adjust the ambient temperature and humidity in the data center computer room 300 and the cooling temperature of the electronic equipment, the data center computer room ambient temperature control system based on the indirect evaporative cooling technology provided by the embodiment of the present invention is provided with a plurality of temperature and humidity sensors 350 in the open cold air supply channel 320 area, the closed return air channel area, and the air supply duct opening and return air duct opening of the indirect evaporative cooling air conditioning unit 110. The temperature and humidity sensors 350 are connected to the controller of the indirect evaporative cooling air conditioning unit 110, and are used to monitor the temperature and humidity of the open cold air supply channel 320 area, the closed return air channel area, the air supply duct opening and the return air duct opening in the data center computer room 300 in real time and feed back to the controller of the indirect evaporative cooling air conditioning unit 110. The controller of the indirect evaporative cooling air conditioning unit 110 adjusts the refrigeration temperature of the indirect evaporative cooling air conditioning unit 110 according to the monitored temperature and humidity data, and controls the humidistat 210 to dry or humidify the air. Thus, the temperature and humidity of the data center computer room 300 are adjusted in a coordinated manner, and the ambient temperature and humidity in the data center computer room 300 are improved. The temperature and humidity sensors 350 installed in the open cold air duct 320 area and the closed hot return air duct 330 area are arranged at multiple points according to the length of each row of cabinets 310. They are generally installed near the ends of each row of cabinets 310 to facilitate the determination of the overall temperature and humidity conditions of the area between the two points. When the length of the cabinet 310 is too long, the corresponding points can be added evenly in the middle position to achieve more accurate measurement and value acquisition of the temperature and humidity conditions in the area. The temperature and humidity sensors in the open cold air duct 320 area are installed in the open cold air duct 320 area under the ceiling 452 through the support bracket. The temperature and humidity sensors 350 in the closed hot return air duct 330 area can be directly installed on its door or inner wall through bolts. The points added in the middle can be cross-symmetrically installed on the C-shaped steel and the corresponding frame through bolts or brackets.

[0040] Please refer to Figure 1 to Figure 2, an embodiment of the present invention provides a data center computer room environmental temperature control system based on indirect evaporative cooling technology, wherein an air inlet 111 of the indirect evaporative cooling air-conditioning unit 110 is installed with a filter (not shown), an air supply duct 112 is installed with an electric control valve 115 and a fire damper 116, a return air duct 113 is installed with an electric control valve 115 and a fire damper 116, and an air outlet duct 114 is installed with a fire damper 116 and a check valve 117, the electric control valve 115 and the fire damper 116 are connected to the controller of the indirect evaporative cooling air-conditioning unit 110, and the controller of the indirect evaporative cooling air-conditioning unit 110 adjusts the opening of the electric control valve 115 according to the temperature and humidity data within a period of time in the data center computer room 300 monitored to adjust the wind speed and air volume; the fire damper 116 is in a normally open state and automatically closes when a fire is sensed, and the fire damper 116 feeds back a signal of whether a fire has occurred to the controller of the indirect evaporative cooling air-conditioning unit 110. The filter can filter the incoming air to prevent large particles from entering; the check valve 117 prevents the exhaust hot air from other floors from flowing back into the indirect evaporative cooling air conditioning unit 110.

[0041] The fan 341 of the fresh air system 340 can be a variable frequency fan, which can control the air supply volume and wind speed. The air duct 342 of each floor is equipped with an electric control valve 115 and a fire damper 116. The electric control valve 115 is connected to the indirect evaporative cooling air conditioning unit 110 through a communication interface. The electric control valve 115 receives the instructions of the controller of the indirect evaporative cooling air conditioning unit 110 and feeds back its own action status to adjust the air supply volume and wind speed; the fire damper 116 is connected to the controller of the indirect evaporative cooling air conditioning unit 110 through a communication interface, automatically closes in the event of a fire, and feeds back its action status to the controller of the indirect evaporative cooling air conditioning unit 110. The fresh air outlet 343 can be a double-layer louver structure to provide a certain diversion effect for the fresh air flow to enter the open cold air supply channel 320 area of ​​the data center computer room 300. The pressure difference sensor 344 is connected to the controller of the fan 341 through a communication interface and is installed on the inner side of the entrance door 430 of the data center room 300. The pressure difference on both sides of the entrance door 430 is monitored and fed back to the controller of the fan 341 to ensure that a slightly positive pressure environment is formed indoors to outdoors in the data center room 300, so that external dust will not be blown into the room, thereby ensuring the cleanliness of the data center room 300 and providing sufficient fresh air for maintenance personnel in the data center room 300. The control method of the micro-positive pressure environment is as follows: set the value range of the pressure difference sensor 344 of each data center room 310 in the controller of the fan 341. When the pressure difference between the data center room 300 and the outside of the entrance door 430 increases, the air supply volume and wind speed of the fan 341 decrease, the opening of the electric control valve 115 decreases, and the air supply of the fresh air system 340 decreases; when the pressure difference between the data center room 300 and the outside of the entrance door 430 decreases, the air supply volume and wind speed of the fan 341 increase, the opening of the electric control valve 115 increases, and the air supply of the fresh air system 340 increases, thereby ensuring that a micro-positive pressure environment is formed indoors to outdoors in the data center room 300.

[0042] Please refer to Figure 1 In the data center computer room environmental temperature control system based on the indirect evaporative cooling technology provided by the embodiment of the present invention, the cross-sectional area of ​​the exhaust shaft 120 in each floor 450 is a stepped shaft that increases from bottom to top according to the exhaust volume. At this time, the exhaust shaft 120 is designed according to the exhaust volume, and the hot air after heat exchange is discharged to the outside of the building 400. The exhaust volume of the lowest floor of the building 400 is the smallest, and the cross-sectional area of ​​the exhaust shaft 120 is the smallest. The exhaust volume gradually increases as you go up the floor, and the cross-sectional area of ​​the exhaust shaft 120 also increases accordingly. The exhaust shaft 120 is a stepped shaft, and the hot air discharged from the upper floor 450 is blocked by the transverse cross-section of the stepped shaft. Combined with the function of the exhaust port 121 and the check valve 117, the hot air is prevented from flowing into the indirect evaporative cooling air-conditioning room 110, and is discharged from the top instead.

[0043] The embodiment of the present invention further provides a method for controlling the ambient temperature of a data center computer room based on indirect evaporative cooling technology, which is based on the above-mentioned ambient temperature control system of a data center computer room based on indirect evaporative cooling technology, and includes:

[0044] Step 501, in each floor 450 of the building 400, an indirect evaporative cooling air-conditioning room 100, a buffer room 200 and a data center room 300 are arranged in sequence in the same direction, so that the indirect evaporative cooling air-conditioning room 100 and the data center room 300 are arranged on the same floor 450, the indirect evaporative cooling air conditioner is arranged in the indirect evaporative cooling air-conditioning room 100, the cabinets 310 of the data center and the electronic equipment thereon are set in the data center room 300, and the two rows of the cabinets 310 are arranged back to back as a group.

[0045] Step 502 , an exhaust shaft 120 is vertically arranged in the indirect evaporative cooling air conditioning room 100 connecting each floor 450 on the building 400 , and the air outlet duct 114 of the indirect evaporative cooling air conditioning unit 110 is connected to the exhaust shaft 120 .

[0046] Step 503, vertically install a fresh air system 340 in a data center room 300 connected to each floor 450 on the building 400, install a fan 341 of the fresh air system 340 on the roof outside the building 400, vertically connect the air duct 342 connected to the fan 341 to the data center room 300 on each floor 450 and install a fresh air outlet 343, install a differential pressure sensor 344 connected to the fan 341 in the data center room 300 on each floor 450; install a fresh air outlet 343 in the data center room 300; An open cold supply air channel 320 and a closed hot return air channel 330 are arranged, and the closed hot return air channel 330 includes a horizontal hot return air channel 332 in the ceiling 452 and a plurality of vertical hot return air channels 331 connected and arranged below the horizontal hot return air channel 332, and the return air duct 113 of the indirect evaporative cooling air-conditioning unit 110 extends into the horizontal hot return air channel 332 to be connected thereto, and each of the vertical hot return air channels 331 is aligned with a group of cabinets 310 and is sealed in the middle area of ​​each group of cabinets 310.

[0047] Step 504, the air supply duct 112 and the return air duct 113 of the indirect evaporative cooling air conditioning unit 110 are extended into the buffer room 200, and the cold air flow generated by the indirect evaporative cooling air conditioning unit 110 is transported to the open cold air supply channel 320 in the data center room 300 through the air supply louver 220 on the wall 420 between the buffer room 200 and the data center room 300 through the air supply duct 112, so as to cool down the data center room 300 and the cabinets 310 therein and the electronic equipment thereon, and the inside of the data center room 300. The hot air flow organization and the hot air flow organization generated by the electronic equipment on the cabinet 310 are sent back to the indirect evaporative cooling air conditioning unit 110 through the closed hot return air duct 330, the return air louver 230 on the wall 420 between the data center computer room 300 and the buffer room 200, and the return air duct 113, and heat is exchanged in the air heat exchanger in the indirect evaporative cooling air conditioning unit 110, and the hot air after heat exchange is discharged into the exhaust shaft 120 through its outlet duct 114, and the hot air is discharged outside the building 400 through the exhaust port 121 on the exhaust shaft 120. In order to maximize the efficiency of the indirect evaporative cooling air conditioning unit 110 and avoid energy waste, the data center computer room environment temperature control method based on the indirect evaporative cooling technology provided in the embodiment of the present invention can also include in step 504:

[0048] Each indirect evaporative cooling air conditioner of each indirect evaporative cooling air conditioning unit 110 is connected through a communication interface, and one of the indirect evaporative cooling air conditioners is used as a master control device, and the remaining indirect evaporative cooling air conditioners are used as slave control devices to perform group control on each indirect evaporative cooling air conditioning unit 110 in the indirect evaporative cooling air conditioning room 100. One of the remaining indirect evaporative cooling air conditioners can also be retained as a spare device. The figure shows a total of 6 indirect evaporative cooling air conditioners, 5 of which are for daily use and 1 is a spare. Each unit has a unit controller. The unit controllers are connected in series through control lines and communication interfaces. The control levels are consistent with each other, and they are redundant. The main and standby controls can be seamlessly connected to ensure that the room environment requirements will not be interrupted and affected. The unit controller refers to the controller of the indirect evaporative cooling air conditioning unit 110.

[0049] The group control method includes: the indirect evaporative cooling air conditioning unit 110 has a performance curve when initially set, and is usually most efficient when operating at 50% to 80% of the maximum power. The unit controllers are interconnected to perform calculations to control the operating power of the indirect evaporative cooling air conditioning unit 110 within this range; when the temperature and humidity detected by the temperature and humidity sensor 350 in the data center computer room 300 exceeds the set temperature and humidity upper limit, and the currently operating indirect evaporative cooling air conditioning unit 110 is close to full load operation, the remaining indirect evaporative cooling air conditioning units 110 will be turned on to turn the original The operating power of the indirect evaporative cooling air-conditioning unit 110 in operation is reduced to an appropriate range; on the contrary, when the temperature and humidity detected by the temperature and humidity sensor 350 in the data center computer room 300 exceed the set temperature and humidity lower limits, if one of the currently operating indirect evaporative cooling air-conditioning units 110 is running at low load, the load of the indirect evaporative cooling air-conditioning unit 110 will be cut off and shut down, and the remaining indirect evaporative cooling air-conditioning units 110 in operation will increase their operating power to receive the load, which will enable multiple indirect evaporative cooling air-conditioning units 110 to form a group control community with higher operating efficiency.

[0050] The group control method may also include: since the electronic equipment in the cabinet 310 in the data center room 300 has different power and heat dissipation, and the number and location of the installation are unevenly distributed, resulting in a large amount of heat dissipation in some local areas; the temperature and humidity sensors in the data center room 300 are evenly distributed in multiple points in the hot and cold channels, and can detect changes in the temperature and humidity field within the effective range. When the temperature of a certain area is higher or lower than that of other areas, the unit controller can determine the location of the area according to the address code of the temperature and humidity sensor, and at the same time send a control signal to the main indirect evaporative cooling air-conditioning unit 110 that supplies air to the area, increase or decrease the air supply cooling capacity of the indirect evaporative cooling air-conditioning unit 110, so that the environment of the data center room 300 can be positioned and quantitatively controlled. For example:

[0051] When a data center room 300 only uses a general cabinet 310 near the door, the temperature and humidity sensor 350 will detect that there is a temperature change in half of the area, and the temperature in the other half of the area is the set normal air temperature. At this time, the unit controller will send an operation signal to the indirect evaporative cooling air-conditioning unit 110 that mainly provides air supply for this half of the area, so that these devices can be operated to ensure that the temperature of the area in production meets the demand. If the indirect evaporative cooling air-conditioning unit 110 that is already in operation cannot cover the temperature requirement, a new adjacent indirect evaporative cooling air-conditioning unit 110 will be put into operation, and so on, until the temperature requirement of the data center room 300 is met. The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided by the embodiment of the present invention arranges the indirect evaporative cooling air-conditioning room 100, the buffer room 200 and the data center computer room 300 in the same direction in sequence on each floor 450 of the building 400, thereby transferring the indirect evaporative cooling air-conditioning traditionally set on the outdoor roof of the building 400 to the indirect evaporative cooling air-conditioning room 100 on the same floor of the data center computer room 300, and the indirect evaporative cooling air-conditioning on the same floor of each floor 450 is used to uniformly heat the data center on the floor 450 through the air supply louvers 220 of the buffer room 200. The open cold air supply duct 320 of the computer room 300 transports cold air flow to cool the data center computer room 300, the cabinets 310 therein, and the electronic equipment thereon, and evenly returns the generated hot air flow to the indirect evaporative cooling air-conditioning unit 110 through the closed hot return air duct 330 and the return air louver 230 for heat exchange and refrigeration, and the hot air after heat exchange is discharged into the exhaust shaft 120 through the air outlet duct 114, and then the outdoor hot air is discharged to the outside of the building 400 through the exhaust port 121 on the exhaust shaft 120, thereby realizing the cooling of the data center computer room 300 on any floor 450. By changing the application mode, control mode and closed isolation mode of the refrigeration equipment in the data center room 300, the electric energy consumed for processing the heat generated by the electronic equipment on the data center room 300 and the internal cabinet 310 during operation is reduced, thereby reducing the energy consumption of the data center. It is realized that the data center room 300 is arranged in a multi-story 450 and the energy consumption of the data center is reduced by changing the control environment temperature mode. The application scope of indirect evaporative cooling technology for cooling the data center room 300 and reducing energy consumption is expanded, avoiding the limitation that the traditional indirect evaporative cooling air conditioner set on the outdoor roof of the building 400 can only cool the environment of the data center on the floor 450 below the lower two floors. In the multi-story building, each data center room 300 can apply indirect evaporative cooling technology to achieve large-scale energy saving and consumption reduction.The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided in the embodiment of the present invention arranges the indirect evaporative cooling air-conditioning unit 110 in the indirect evaporative cooling air-conditioning room 100, so that the indirect evaporative cooling air-conditioning unit 110 can be flexibly arranged without restriction, so that the indirect evaporative cooling air-conditioning unit 110 and the data center computer room 300 can be arranged in close proximity, thereby reducing the loss during the transmission process of the cold air flow organization output by the air conditioner, enhancing the refrigeration effect, and reducing the possibility of local hot spots generated by the cold air flow organization transmitted over long distances. At the same time, the close arrangement increases the temperature difference between the supply and return air, thereby improving the heat exchange efficiency of the indirect evaporative cooling air-conditioning unit 110 and further reducing energy consumption.

[0052] The data center computer room environmental temperature control system and method based on indirect evaporative cooling technology provided by the embodiment of the present invention sets a return air louver 230 on the return air path to evenly transport the hot air flow, avoiding the problem of uneven air flow organization and accumulation of local hot spots during the hot air flow organization and transportation process, and reducing the probability of fire. The air supply louver 220 set on the air supply path can evenly transport the cold air flow organization. That is, the air supply louver 220 and the return air louver 230 have a balanced guiding effect on the air flow, ensuring the uniform distribution of the cold air flow organization.

[0053] The data center computer room environmental temperature control system and method based on indirect evaporative cooling technology provided in the embodiment of the present invention improves the closed cold air supply duct under the floor of the data center computer room 300 into an open cold air supply duct 320, so that while cooling the cabinets 310 in the data center computer room 300 and the electronic equipment thereon, the data center computer room 300 can also be cooled, thereby changing the ambient temperature in the data center computer room 300, avoiding the problem that the closed cold air supply duct has a poor cooling effect on the data center computer room 300, making it difficult for maintenance personnel to perform maintenance operations in the data center computer room 300, and overcoming the problem that the ambient temperature in the data center computer room 300 is too high and affects the health of maintenance personnel.

[0054] The data center computer room environmental temperature control system and method based on the indirect evaporative cooling technology provided by the embodiment of the present invention isolates the indirect evaporative cooling air-conditioning room 100 from the data center computer room 300 through the buffer room 200, so that the water generated by the indirect evaporative cooling air-conditioning unit 110 during operation is blocked by the wall 420 (herein, the wall 420 is called a water retaining sill) under the air supply louver 220 of the buffer room 200, thereby preventing the water generated by the indirect evaporative cooling air-conditioning unit 110 during operation from leaking into the data center computer room 300 and damaging the electronic equipment therein, thereby ensuring the operation safety of the data center computer room 300. That is, the buffer room 200 is used to ensure that the equipment areas such as the indirect evaporative cooling air-conditioning unit 110 and the humidistat 210, which need to be installed with water supply pipes and drainage pipes, will not cause damage to important electronic equipment in the data center computer room 300 in the event of water leakage.

[0055] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A data center room environment temperature control system based on indirect evaporative cooling technology. It is characterized in that It includes an indirect evaporative cooling air-conditioning room, a buffer room and a data center room which are sequentially arranged on each floor of the building, and the indirect evaporative cooling air-conditioning room on each floor is located on the same side; The indirect evaporative cooling air-conditioning room is provided with a plurality of indirect evaporative cooling air-conditioning units, each of which has an air inlet, an air supply duct, a return air duct and an air outlet duct. A vent is provided on the wall corresponding to the air inlet of the indirect evaporative cooling air-conditioning room, and an exhaust shaft is connected to the wall corresponding to the air outlet duct. The exhaust shaft is arranged vertically and connected to each floor of the building. The air supply duct and the return air duct extend into the buffer room. The data center computer room is arranged with cabinets and electronic equipment thereon, the two rows of cabinets are arranged back to back as a group, the data center computer room has an open cold supply air channel and a closed hot return air channel, the closed hot return air channel includes a horizontal hot return air channel in the ceiling and a plurality of vertical hot return air channels connected and arranged below the horizontal hot return air channel, the horizontal hot return air channel extends into the buffer room, the return air duct of the indirect evaporative cooling air conditioning unit in the buffer room is connected with the horizontal hot return air channel, each of the vertical hot return air channels is aligned with a group of cabinets and is sealed in the middle area of ​​each group of cabinets, the data center computer room is provided with a fresh air system, the fresh air system includes a fan, an air duct, a fresh air outlet and a pressure difference sensor, the fan is arranged on the outdoor roof of the building, the air duct and the fan extend vertically into each floor of the building, and the air duct transports fresh air to the data center computer room on each floor through the fresh air outlet connected thereto; The indirect evaporative cooling air-conditioning unit draws in outdoor fresh air through its air inlet via the vent of the indirect evaporative cooling air-conditioning room, performs heat exchange and refrigeration on the hot air flow organization in the return air duct of the indirect evaporative cooling air-conditioning unit, and then uses its supply air duct to cool the data center room, the cabinets therein, and the electronic equipment thereon. The hot air flow organization in the data center room and the hot air flow organization generated by the electronic equipment on the cabinet are sent back to the indirect evaporative cooling air-conditioning unit through the closed hot return air channel and the return air duct, perform heat exchange in the air heat exchanger in the indirect evaporative cooling air-conditioning unit, and discharge the hot air after heat exchange into the exhaust shaft through its outlet duct, and discharge the hot air outside the building through the exhaust port on the exhaust shaft.

2. The data center computer room environmental temperature control system based on indirect evaporative cooling technology according to claim 1, It is characterized in that The buffer room is provided with a constant humidity machine for drying or humidifying the air, and supply air louvers and return air louvers are provided on the wall between the buffer room and the data center room; after the cold air flow organization generated by the air supply duct of the indirect evaporative cooling air-conditioning unit interacts with the dried or humidified air flow, the data center room and the cabinets therein and the electronic equipment thereon are cooled down through the above-mentioned supply air louvers, and the hot air flow organization in the data center room and the hot air flow organization generated by the electronic equipment on the cabinets are sent back to the indirect evaporative cooling air-conditioning unit through the closed hot return air channel, return air louvers and return air ducts, and heat exchange is carried out in the air heat exchanger in the indirect evaporative cooling air-conditioning unit, and the hot air after heat exchange is discharged into the exhaust shaft through its outlet duct, and the hot air is discharged outside the building through the exhaust port on the exhaust shaft.

3. The data center computer room environmental temperature control system based on indirect evaporative cooling technology according to claim 2, It is characterized in that The humidistat is communicatively connected with the controller of the indirect evaporative cooling air conditioning unit, and the humidistat dries or humidifies the air according to the instruction of the indirect evaporative cooling air conditioning unit.

4. The data center computer room environmental temperature control system based on indirect evaporative cooling technology according to claim 3, It is characterized in that A plurality of temperature and humidity sensors are provided in the open cold air supply channel area, the closed return air channel area, and the air supply duct openings and return air duct openings of the indirect evaporative cooling air-conditioning unit. The temperature and humidity sensors are connected to the controller of the indirect evaporative cooling air-conditioning unit, and are used to monitor the temperature and humidity of the open cold air supply channel area and the closed return air channel area in the data center computer room in real time and feed back to the controller of the indirect evaporative cooling air-conditioning unit. The controller of the indirect evaporative cooling air-conditioning unit adjusts the refrigeration temperature of the indirect evaporative cooling air-conditioning unit according to the monitored temperature and humidity data, and controls the constant humidity machine to dry or humidify the air.

5. The data center computer room environment temperature control system based on indirect evaporative cooling technology according to claim 4, It is characterized in that The air inlet of the indirect evaporative cooling air-conditioning unit is installed with a filter, the air supply duct is installed with an electric control valve and a fire damper, the return air duct is installed with an electric control valve and a fire damper, and the air outlet duct is installed with a fire damper and a check valve. The electric control valve and the fire damper are connected to the controller of the indirect evaporative cooling air-conditioning unit. The controller of the indirect evaporative cooling air-conditioning unit adjusts the opening of the electric control valve according to the temperature and humidity data monitored in the computer room of the data center over a period of time to adjust the wind speed and air volume; the fire damper is in a normally open state and automatically closes when a fire is sensed. The fire damper feeds back a signal of whether a fire has occurred to the controller of the indirect evaporative cooling air-conditioning unit.

6. The data center computer room environment temperature control system based on indirect evaporative cooling technology according to claim 1, It is characterized in that The indirect evaporative cooling air conditioning units are two indirect evaporative cooling air conditioning units arranged back to back in a mirror image, and the air inlet is located on the other side of the two indirect evaporative cooling air conditioning units away from each other.

7. The data center computer room environmental temperature control system based on indirect evaporative cooling technology according to claim 1, It is characterized in that The cross-sectional area of ​​the exhaust shaft on each floor increases from bottom to top in a stepped manner according to the exhaust volume.

8. A method for controlling the ambient temperature of a data center computer room based on indirect evaporative cooling technology. It is characterized in that Arrange the indirect evaporative cooling air-conditioning room, the buffer room and the data center room in the same direction on each floor of the building, so that the indirect evaporative cooling air-conditioning room and the data center room are arranged on the same floor, the indirect evaporative cooling air conditioner is arranged in the indirect evaporative cooling air-conditioning room, the cabinets of the data center and the electronic equipment thereon are arranged in the data center room, and the two rows of the cabinets are arranged back to back as a group; An exhaust shaft is vertically arranged in an indirect evaporative cooling air conditioning room connected to each floor of the building, and an air outlet duct of the indirect evaporative cooling air conditioning unit is connected to the exhaust shaft; A fresh air system is vertically arranged in a data center computer room connected to each floor of the building, a fan of the fresh air system is arranged on the roof outside the building, an air duct connected to the fan is vertically connected to the data center computer room on each floor and a fresh air outlet is arranged, and a pressure difference sensor connected to the fan is arranged in the data center computer room on each floor; an open cold air supply channel and a closed hot return air channel are arranged in the data center computer room, the closed hot return air channel includes a horizontal hot return air channel in the ceiling and a plurality of vertical hot return air channels arranged below the horizontal hot return air channel, the return air duct of the indirect evaporative cooling air conditioning unit extends into the horizontal hot return air channel to be connected thereto, and each of the vertical hot return air channels is aligned with a group of cabinets and is sealed in the middle area of ​​each group of cabinets; The supply air duct and return air duct of the indirect evaporative cooling air-conditioning unit are extended into the buffer room, and the cold air flow generated by the indirect evaporative cooling air-conditioning unit is transported to the open cold air supply channel in the data center computer room through the supply air louver on the wall between the buffer room and the data center computer room through the supply air duct, so as to cool the data center computer room, the cabinets therein and the electronic equipment thereon, and the hot air flow organization in the data center computer room and the hot air flow organization generated by the electronic equipment on the cabinet are transported back to the indirect evaporative cooling air-conditioning unit for heat exchange through the closed hot return air channel, the return air louver on the wall between the data center computer room and the buffer room, and the return air duct, and the hot air after heat exchange is discharged into the exhaust shaft through its outlet duct, and the hot air is discharged outside the building through the exhaust outlet on the exhaust shaft.

9. The method for controlling the ambient temperature of a data center computer room based on indirect evaporative cooling technology according to claim 8, It is characterized in that Each indirect evaporative cooling air conditioner of each indirect evaporative cooling air conditioner unit is connected through a communication interface, one of the indirect evaporative cooling air conditioners is used as a master control device, and the remaining indirect evaporative cooling air conditioners are used as slave control devices, so as to perform group control on each indirect evaporative cooling air conditioner unit in the indirect evaporative cooling air conditioner room.

10. The method for controlling the ambient temperature of a data center computer room based on indirect evaporative cooling technology according to claim 9, It is characterized in that The operating power of the indirect evaporative cooling air-conditioning unit is controlled within a predetermined range; when the temperature and humidity detected by the temperature and humidity sensors in the computer room of the data center exceeds the set upper temperature and humidity limits, and the currently operating indirect evaporative cooling air-conditioning units are close to full load operation, the remaining indirect evaporative cooling air-conditioning units will be turned on, and the operating power of the original indirect evaporative cooling air-conditioning units will be reduced to a certain range; when the temperature and humidity detected by the temperature and humidity sensors in the computer room of the data center exceeds the set lower temperature and humidity limits, and one of the currently operating indirect evaporative cooling air-conditioning units is operating at low load, the load of the indirect evaporative cooling air-conditioning unit will be cut off and shut down, and the remaining indirect evaporative cooling air-conditioning units that have been operating will increase their operating power to receive the load.

Images