CN106247501A - Data center is with closing the passage of heat full return air dry air energy central air conditioner system - Google Patents
Data center is with closing the passage of heat full return air dry air energy central air conditioner system Download PDFInfo
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- 238000001816 cooling Methods 0.000 claims abstract description 106
- 238000004378 air conditioning Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 97
- 239000000945 filler Substances 0.000 claims description 36
- 239000007921 spray Substances 0.000 claims description 23
- 238000005057 refrigeration Methods 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 5
- 239000000463 material Substances 0.000 claims 4
- 239000006200 vaporizer Substances 0.000 claims 2
- 238000013480 data collection Methods 0.000 claims 1
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 239000005336 safety glass Substances 0.000 claims 1
- 230000000739 chaotic effect Effects 0.000 abstract description 2
- 230000009290 primary effect Effects 0.000 description 13
- 238000012856 packing Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0227—Ducting arrangements using parts of the building, e.g. air ducts inside the floor, walls or ceiling of a building
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Thermal Sciences (AREA)
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Abstract
本发明公开的数据中心用封闭热通道‑全回风干空气能中央空调系统，包括有干空气能中央空调机组，干空气能中央空调机组通过回风管与数据中心连接，干空气能中央空调机组能回收数据中心内的回风并对回风进行处理，使其变成符合送风条件的空气；干空气能中央空调机组还通过送风管与数据中心连接，符合送风条件的空气能经送风管和机房送风口送入数据中心内。本发明数据中心用封闭热通道‑全回风干空气能中央空调系统，能有效保证数据中心全年供冷需求，能避免数据中心内出现气流组织混乱的现象，还能根据不同的气象条件实现三种运行模式的合理调节。
The closed hot aisle-full return air dry air energy central air conditioning system for data centers disclosed by the present invention includes a dry air energy central air conditioning unit connected to the data center through a return air pipe, and a dry air energy central air conditioning unit It can recover the return air in the data center and process the return air to make it meet the air supply conditions; the dry air energy central air conditioning unit is also connected to the data center through the air supply pipe, and the air that meets the air supply conditions can be passed through The air supply pipe and the air supply outlet of the computer room are sent into the data center. The closed hot aisle-full-return dry air energy central air-conditioning system for the data center of the present invention can effectively ensure the year-round cooling demand of the data center, avoid the phenomenon of chaotic air flow in the data center, and realize three-dimensional air conditioning according to different meteorological conditions. Reasonable adjustment of the operation mode.
Description
技术领域technical field
本发明属于空调系统技术领域，具体涉及一种数据中心用封闭热通道-全回风干空气能中央空调系统。The invention belongs to the technical field of air-conditioning systems, and in particular relates to a closed hot aisle-full return dry air energy central air-conditioning system for a data center.
背景技术Background technique
在国家大力倡导节能减排的大环境下，节约数据中心空调系统能耗尤为重要。现有的部分数据中心空调采用架高地板下送风的方式，完全依靠精密空调独揽数据中心内的全部负荷，能量消耗巨大。也有些数据中心内采用新风与蒸发冷却降温联合的技术，这种技术的优势在于能大大降低暖通系统的费用，降低PUE值，但是由于蒸发冷却易受到季节性和地域性影响，在夏季极端天气情况下难以保证其降温效果。In the environment where the country vigorously advocates energy conservation and emission reduction, it is particularly important to save energy consumption of air conditioning systems in data centers. Some existing data center air conditioners use the air supply method under the raised floor, relying entirely on precision air conditioners to monopolize all the loads in the data center, which consumes a lot of energy. Some data centers also use the combination of fresh air and evaporative cooling technology. The advantage of this technology is that it can greatly reduce the cost of the HVAC system and reduce the PUE value. It is difficult to guarantee its cooling effect under weather conditions.
数据中心内的环境具有回风温度高及干湿球温差大的特点，特别适合利用蒸发冷却技术处理回风，以达到对数据中心降温、加湿和净化的要求，但考虑到数据中心后期需要不断增容，单靠蒸发冷却无法满足后期的供冷需求，因此必须适当增加机械制冷装置来满足供冷需求，但是机械制冷装置的大量使用容易导致数据中心内气流组织混乱，冷热掺混现象严重，导致冷却效果不佳。The environment in the data center has the characteristics of high return air temperature and large temperature difference between dry and wet bulbs. It is especially suitable for using evaporative cooling technology to process the return air to meet the requirements for cooling, humidifying and purifying the data center. Capacity increase, evaporative cooling alone cannot meet the cooling demand in the later stage, so mechanical refrigeration devices must be appropriately increased to meet the cooling demand, but the extensive use of mechanical refrigeration devices can easily lead to disordered air flow in the data center, and serious mixing of cold and hot , leading to poor cooling effect.
发明内容Contents of the invention
本发明的目的在于提供一种数据中心用封闭热通道-全回风干空气能中央空调系统，能有效保证数据中心全年供冷需求，能避免数据中心内出现气流组织混乱的现象，还能根据不同的气象条件实现三种运行模式的合理调节。The purpose of the present invention is to provide a closed hot aisle-full-return dry air energy central air-conditioning system for data centers, which can effectively ensure the year-round cooling demand of the data center, avoid the phenomenon of chaotic air flow in the data center, and can also according to Different weather conditions realize the reasonable adjustment of the three operating modes.
本发明所采用的技术方案是，数据中心用封闭热通道-全回风干空气能中央空调系统，包括有干空气能中央空调机组，干空气能中央空调机组通过回风管与数据中心连接，干空气能中央空调机组能回收数据中心内的回风并对回风进行处理，使其变成符合送风条件的空气；干空气能中央空调机组还通过送风管与数据中心连接，符合送风条件的空气能经送风管和机房送风口送入数据中心内。The technical solution adopted in the present invention is that the data center uses a closed hot aisle-full return air dry air energy central air conditioning system, including a dry air energy central air conditioning unit, and the dry air energy central air conditioning unit is connected to the data center through the return air pipe, dry The air energy central air conditioning unit can recycle the return air in the data center and process the return air to make it meet the air supply conditions; the dry air energy central air conditioning unit is also connected to the data center through the air supply pipe, which meets the air supply requirements. Conditioned air can be sent into the data center through the air supply pipe and the air supply outlet of the computer room.
本发明的特点还在于：The present invention is also characterized in that:
数据中心内的上层为吊顶层，整个吊顶层形成回风通道；吊顶层的一侧壁上设置有机房排风口，干空气能中央空调机组通过回风管与该机房排风口连接；数据中心内设置有多个服务器机柜组，每个服务器机柜组由两个服务器机柜构成，且两个服务器机柜出风侧呈相对设置，在两个服务器机柜的出风侧之间形成封闭热通道，每条封闭热通道均与回风通道连通，用于将服务器机柜排出的热风经封闭热通道送入回风通道中，每个服务器机柜的进风侧形成冷风通道；数据中心的侧墙下部设置有机房送风口，干空气能中央空调机组通过送风管与该机房送风口连接，机房送风口能实现弥漫送风，从而将经干空气能中央空调机组处理后符合送风条件的空气送至每个服务器机柜的冷风通道，用于冷却服务器机柜内的服务器。The upper floor of the data center is the suspended ceiling, and the entire suspended ceiling forms a return air channel; the side wall of the suspended ceiling is provided with an exhaust outlet of the machine room, and the central air-conditioning unit of the dry air energy is connected to the exhaust outlet of the machine room through the return duct; the data There are multiple server cabinet groups in the center, and each server cabinet group is composed of two server cabinets, and the air outlet sides of the two server cabinets are set opposite to each other, forming a closed hot passage between the air outlet sides of the two server cabinets. Each closed hot aisle is connected with the return air channel, which is used to send the hot air discharged from the server cabinet into the return air channel through the closed hot aisle, and the air inlet side of each server cabinet forms a cold air channel; the lower part of the side wall of the data center is set The air supply port of the machine room, the dry air energy central air conditioning unit is connected to the air supply port of the machine room through the air supply pipe, and the air supply port of the machine room can realize diffuse air supply, so that the air that meets the air supply conditions after being processed by the dry air energy central air conditioning unit is sent to The cold air channel of each server cabinet is used to cool the servers in the server cabinet.
干空气能中央空调机组，包括有机组壳体，机组壳体内分隔成上、下布置的两个风道；上风道的结构为：机组壳体相对的两侧壁上分别设置有二次风进风口、二次风排风口，二次风进风口与二次风排风口之间依次设置有袋式初效过滤器b、第一直接蒸发冷却单元、二次风室、涡旋式压缩机、风冷式冷凝器、节流阀及二次排风机；下风道的结构为：机组壳体相对的两侧壁上分别设置有回风进风口和送风口，回风进风口与回风管连接，送风口与送风管连接；回风进风口与送风口之间依次设置有袋式初效过滤器a、盘管间接蒸发冷却器、回风室、第二直接蒸发冷却单元、直接膨胀式蒸发器及送风机；袋式初效过滤器b与袋式初效过滤器a联合构成空气过滤单元；第一直接蒸发冷却单元与盘管间接蒸发冷却器经连接构成直接-盘管间接蒸发冷却单元；二次风室与回风室联合构成新/回风混合单元，且在回风室内设置有预热器，回风室对应的机组壳体侧壁上设置有空调回风口；涡旋式压缩机、风冷式冷凝器、节流阀及直接膨胀式蒸发器经铜管依次连接构成闭合回路形成机械制冷蒸发器/冷凝器单元；二次排风机和送风机联合构成风机单元。The dry air energy central air-conditioning unit includes an organic unit shell, which is divided into two air ducts arranged on the upper and lower sides; The tuyere, the secondary air exhaust port, the bag-type primary effect filter b, the first direct evaporative cooling unit, the secondary air chamber, the scroll compression machine, air-cooled condenser, throttle valve and secondary exhaust fan; the structure of the lower air duct is: the return air inlet and the air supply port are respectively arranged on the opposite side walls of the unit shell, and the return air inlet and the return air The air supply port is connected to the air supply pipe; between the return air inlet and the air supply port, there are bag-type primary effect filter a, coil indirect evaporative cooler, return air chamber, second direct evaporative cooling unit, direct Expansion evaporator and blower; bag type primary effect filter b and bag type primary effect filter a are combined to form an air filter unit; the first direct evaporative cooling unit and coil indirect evaporative cooler are connected to form direct-coil indirect evaporation Cooling unit; the secondary air chamber and the return air chamber are combined to form a new/return air mixed unit, and a preheater is installed in the return air chamber, and an air conditioner return air outlet is provided on the side wall of the unit shell corresponding to the return air chamber; the vortex Type compressor, air-cooled condenser, throttling valve and direct expansion evaporator are sequentially connected through copper tubes to form a closed circuit to form a mechanical refrigeration evaporator/condenser unit; the secondary exhaust fan and supply fan are combined to form a fan unit.
第一直接蒸发冷却单元，包括有直接蒸发冷却填料b，直接蒸发冷却填料b的上方设置有布水单元；直接蒸发冷却填料b的出风侧设置有填料式挡水板b，直接蒸发冷却填料b和填料式挡水板b的下方设置有集水箱，集水箱通过蓄水管与盘管间接蒸发冷却器连接，蓄水管上设置有循环水泵b，盘管间接蒸发冷却器还通过供水管a与布水单元连接。The first direct evaporative cooling unit includes a direct evaporative cooling filler b, and a water distribution unit is arranged above the direct evaporative cooling filler b; A water collecting tank is arranged under b and the packing type water baffle b, and the water collecting tank is connected with the indirect evaporative cooler of the coil through the water storage pipe. a is connected to the water distribution unit.
布水单元由布水管和多个均匀设置于布水管上且面向直接蒸发冷却填料b喷淋的喷嘴构成；布水管与供水管a连接。The water distribution unit is composed of a water distribution pipe and a plurality of nozzles evenly arranged on the water distribution pipe and facing the direct evaporative cooling filler b for spraying; the water distribution pipe is connected with the water supply pipe a.
第二直接蒸发冷却单元，包括有直接蒸发冷却填料a，直接蒸发冷却填料a的上方设置有喷淋单元；直接蒸发冷却填料a的出风侧设置有填料式挡水板a，直接蒸发冷却填料a和填料式挡水板a的下方设置有蓄水槽，蓄水槽通过第二供水管b与喷淋单元连接，第二供水管b上设置有循环水泵a。The second direct evaporative cooling unit includes a direct evaporative cooling filler a, and a spray unit is arranged above the direct evaporative cooling filler a; a packing type water baffle a is arranged on the air outlet side of the direct evaporative cooling filler a, and the direct evaporative cooling filler a and the packing type water baffle a are provided with a water storage tank, the water storage tank is connected with the spray unit through the second water supply pipe b, and the circulating water pump a is arranged on the second water supply pipe b.
喷淋单元由喷淋供水管和多个均匀设置于喷淋供水管上且面向直接蒸发冷却填料a喷淋的喷头组成，喷淋供水管与第二供水管b连接。The spray unit is composed of a spray water supply pipe and a plurality of spray heads evenly arranged on the spray water supply pipe and facing the direct evaporative cooling filler a for spraying, and the spray water supply pipe is connected with the second water supply pipe b.
送风管和回风管均为铝制风管，且送风管和回风管外壁均敷设有保温层。The air supply pipe and the air return pipe are all aluminum air pipes, and the outer walls of the air supply pipe and the return air pipe are covered with insulation layers.
封闭热通道配设有钢化玻璃防火门。The closed hot aisle is equipped with tempered glass fire doors.
二次排风机和送风机均为离心式变频风机。Both the secondary exhaust fan and the blower fan are centrifugal frequency conversion fans.
本发明的有益效果在于：The beneficial effects of the present invention are:
(1)本发明数据中心用封闭热通道-全回风干空气能中央空调系统具有结构简单的优点，与现有水冷冷冻水型空调系统相比，省去了冷却塔、板式换热器等设备以及复杂的管网系统，运行维护较方便；除此之外，将本发明数据中心用封闭热通道-全回风干空气能中央空调系统应用于数据中心内时，数据中心中无需架设防静电地板，降低了工程造价。(1) The closed hot aisle-full-return dry air energy central air-conditioning system for the data center of the present invention has the advantage of simple structure, compared with the existing water-cooled chilled water type air-conditioning system, equipment such as cooling towers and plate heat exchangers are omitted And the complex pipe network system, the operation and maintenance are more convenient; in addition, when the closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention is applied to the data center, there is no need to erect an anti-static floor in the data center , reducing the project cost.
(2)本发明数据中心用封闭热通道-全回风干空气能中央空调系统是将蒸发冷却技术与机械制冷技术结合起来，能根据数据中心内的温、湿度波动情况，灵活开启机组不同功能段，实现三种不同的运行模式。(2) The closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention combines evaporative cooling technology with mechanical refrigeration technology, and can flexibly open different functional sections of the unit according to the temperature and humidity fluctuations in the data center , to achieve three different operating modes.
(3)本发明数据中心用封闭热通道-全回风干空气能中央空调系统内采用了填料式直接蒸发冷却器，能为机械制冷系统内的冷凝器提供低于室外空气温度的冷风，进而能在一定程度上降低冷凝温度，使输入功率减小，制冷量增加，同时又由于填料式直接蒸发冷却器消耗的电能较少，最终使得系统的COP有较大提高。(3) In the data center of the present invention, a closed hot aisle-full return air dry air energy central air conditioning system adopts a packing type direct evaporative cooler, which can provide cold air lower than the outdoor air temperature for the condenser in the mechanical refrigeration system, and then can To a certain extent, the condensing temperature is reduced, the input power is reduced, and the cooling capacity is increased. At the same time, because the packed direct evaporative cooler consumes less power, the COP of the system is greatly improved.
(4)本发明数据中心用封闭热通道-全回风干空气能中央空调系统能处理全回风，不直接引入新风，能使数据中心内含尘浓度较低，保证了数据中心内洁净度的要求，同时对空调机组过滤要求能适当降低，减少了空气过滤的代价。(4) The closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention can handle the full return air without directly introducing fresh air, which can make the dust concentration in the data center lower and ensure the cleanliness of the data center. Requirements, at the same time, the requirements for air conditioning unit filtration can be appropriately reduced, reducing the cost of air filtration.
(5)本发明数据中心用封闭热通道-全回风干空气能中央空调系统内采用封闭热通道，将数据中心内冷热气流隔离，避免了冷热气流的掺混现象，对数据中心内冷却的更加均匀。(5) The closed hot aisle used in the data center of the present invention-full return air dry air energy central air-conditioning system adopts a closed hot aisle to isolate the hot and cold air flow in the data center, avoiding the mixing phenomenon of hot and cold air flow, and cooling the data center. more evenly.
附图说明Description of drawings
图1是本发明数据中心用封闭热通道-全回风干空气能中央空调系统的结构示意图；Fig. 1 is a schematic structural view of a closed hot aisle-full return air dry air energy central air conditioning system for a data center of the present invention;
图2是本发明数据中心用封闭热通道-全回风干空气能中央空调系统内干空气能中央空调机组的结构示意图。Fig. 2 is a schematic structural view of the dry air energy central air conditioning unit in the closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention.
图中，A.空气过滤单元，B.直接-盘管间接蒸发冷却单元，C.新/回风混合单元，D.机械制冷蒸发器/冷凝器单元，E.风机单元；In the figure, A. Air filter unit, B. Direct-coil indirect evaporative cooling unit, C. Fresh/return air mixed unit, D. Mechanical refrigeration evaporator/condenser unit, E. Fan unit;
1.干空气能中央空调机组，2.送风管，3.机房送风口，4.服务器机柜，5.封闭热通道，6.吊顶层，7.机房排风口，8.回风管，9.回风进风口，10.袋式初效过滤器a，11.盘管间接蒸发冷却器，12.预热器，13.空调回风口，14.直接蒸发冷却填料a，15.循环水泵a，16.填料式挡水板a，17.直接膨胀式蒸发器，18.送风机，19.送风口，20.二次风进风口，21.袋式初效过滤器b，22.循环水泵b，23.直接蒸发冷却填料b，24.填料式挡水板b，25.涡旋式压缩机，26.风冷式冷凝器，27.节流阀，28.二次排风机，29.二次风排风口，30.蓄水管，31.供水管a，32.供水管b。1. Dry air energy central air-conditioning unit, 2. Air supply pipe, 3. Air supply outlet in the computer room, 4. Server cabinet, 5. Closed hot aisle, 6. Ceiling floor, 7. Air outlet in the computer room, 8. Return air duct, 9. Return air inlet, 10. Bag type primary filter a, 11. Coil indirect evaporative cooler, 12. Preheater, 13. Air conditioner return air outlet, 14. Direct evaporative cooling filler a, 15. Circulating water pump a, 16. Packed water baffle a, 17. Direct expansion evaporator, 18. Blower fan, 19. Air supply outlet, 20. Secondary air inlet, 21. Bag type primary filter b, 22. Circulating water pump b, 23. Direct evaporative cooling packing b, 24. Packing water baffle b, 25. Scroll compressor, 26. Air-cooled condenser, 27. Throttle valve, 28. Secondary exhaust fan, 29. Secondary air outlet, 30. water storage pipe, 31. water supply pipe a, 32. water supply pipe b.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明数据中心用封闭热通道-全回风干空气能中央空调系统，其结构如图1所示，包括有干空气能中央空调机组1，干空气能中央空调机组1通过回风管8与数据中心内吊顶层6处设置的机房排风口7连接，干空气能中央空调机组1能回收数据中心内的回风并对回风进行处理，使其变成符合送风条件的空气；干空气能中央空调机组1还通过送风管2与数据中心侧墙上设置的机房送风口3连接，符合送风条件的空气能经送风管2和机房送风口3送入数据中心内。The closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention has a structure as shown in FIG. The exhaust outlet 7 of the machine room set at 6 places on the suspended ceiling in the center is connected, and the dry air energy central air-conditioning unit 1 can recover the return air in the data center and process the return air to make it meet the air supply conditions; dry air The central air-conditioning unit 1 is also connected to the machine room air supply port 3 provided on the side wall of the data center through the air supply pipe 2, and the air that meets the air supply conditions can be sent into the data center through the air supply pipe 2 and the machine room air supply port 3.
机房送风口3和机房排风口7内均设置有风量控制阀。Both the air supply port 3 of the machine room and the air exhaust port 7 of the machine room are provided with air volume control valves.
数据中心内的上层为吊顶层6，整个吊顶层6形成回风通道；数据中心内设置有多个服务器机柜组，每个服务器机柜组由两个服务器机柜4构成，且两个服务器机柜4出风侧呈相对设置，在两个服务器机柜4的出风侧之间形成封闭热通道5，每条封闭热通道5均与回风通道连通，用于将服务器机柜4排出的热风经封闭热通道5送入回风通道中，每个服务器机柜4的进风侧形成冷风通道；机房送风口3位于数据中心的侧墙下部，机房送风口3能实现弥漫送风，从而将经干空气能中央空调机组1处理后符合送风条件的空气送至每个服务器机柜4的冷风通道，用于冷却服务器机柜4内的服务器。The upper layer in the data center is the suspended ceiling layer 6, and the entire suspended ceiling layer 6 forms a return air passage; multiple server cabinet groups are arranged in the data center, and each server cabinet group is composed of two server cabinets 4, and the two server cabinets 4 have outlets The wind side is oppositely arranged, and a closed hot aisle 5 is formed between the air outlet sides of the two server cabinets 4, and each closed hot aisle 5 is connected with the return air channel, and is used to pass the hot air discharged from the server cabinet 4 through the closed hot aisle 5 into the air return channel, and the air inlet side of each server cabinet 4 forms a cold air channel; the air supply outlet 3 of the computer room is located at the lower part of the side wall of the data center, and the air supply outlet 3 of the computer room can realize diffuse air supply, so that the dried air can be centrally The air that meets the air supply conditions after being processed by the air conditioning unit 1 is sent to the cold air channel of each server cabinet 4 for cooling the servers in the server cabinet 4 .
送风管2和回风管8均为铝制风管，且外部均敷设保温层，该保温层由保温材料制成。The air supply pipe 2 and the air return pipe 8 are all aluminum air pipes, and an insulation layer is laid on the outside, and the insulation layer is made of an insulation material.
封闭热通道5配设有钢化玻璃防火门。The closed hot aisle 5 is equipped with tempered glass fire doors.
干空气能中央空调机组1，其结构具体如图2所示，包括有机组壳体，机组壳体内分隔成上、下布置的两个风道；上风道的结构为：机组壳体相对的两侧壁上分别设置有二次风进风口20、二次风排风口29，二次风进风口20与二次风排风口29之间依次设置有袋式初效过滤器b21、第一直接蒸发冷却单元、二次风室、涡旋式压缩机25、风冷式冷凝器26、节流阀27及二次排风机28；下风道的结构为：机组壳体相对的两侧壁上分别设置有回风进风口9、送风口19，回风进风口9与回风管8连接，送风口19与送风管2连接；回风进风口9与送风口19之间依次设置有袋式初效过滤器a10、盘管间接蒸发冷却器11、回风室、第二直接蒸发冷却单元、直接膨胀式蒸发器17(冷却效果更明显)及送风机18；袋式初效过滤器b21与袋式初效过滤器a10联合构成空气过滤单元A；第一直接蒸发冷却单元与盘管间接蒸发冷却器11经连接构成直接-盘管间接蒸发冷却单元B；二次风室与回风室联合构成新/回风混合单元C，且在回风室内设置有预热器12，回风室对应的机组壳体侧壁上设置有空调回风口13；涡旋式压缩机25、风冷式冷凝器26、节流阀27及直接膨胀式蒸发器17经铜管依次连接构成闭合回路形成机械制冷蒸发器/冷凝器单元D；二次排风机28和送风机18联合构成风机单元E。Dry air energy central air-conditioning unit 1, its structure is shown in Figure 2, including an organic unit casing, the unit casing is divided into two air ducts arranged upper and lower; the structure of the upper air duct is: the two opposite sides of the unit housing The side walls are respectively provided with a secondary air inlet 20 and a secondary air exhaust port 29, and between the secondary air inlet 20 and the secondary air exhaust port 29, a bag-type primary filter b21, a first Direct evaporative cooling unit, secondary air chamber, scroll compressor 25, air-cooled condenser 26, throttle valve 27 and secondary exhaust fan 28; A return air inlet 9 and an air supply port 19 are arranged respectively, the return air inlet 9 is connected to the return air pipe 8, and the air supply port 19 is connected to the air supply pipe 2; between the return air inlet 9 and the air supply port 19, there are bags Type primary effect filter a10, coil indirect evaporative cooler 11, return air chamber, second direct evaporative cooling unit, direct expansion evaporator 17 (cooling effect is more obvious) and blower 18; bag type primary effect filter b21 and The bag-type primary effect filter a10 is combined to form an air filter unit A; the first direct evaporative cooling unit and the coil indirect evaporative cooler 11 are connected to form a direct-coil indirect evaporative cooling unit B; the secondary air chamber and the return air chamber are combined A new/return air mixing unit C is formed, and a preheater 12 is provided in the return air chamber, and an air conditioner return air outlet 13 is provided on the side wall of the unit shell corresponding to the return air chamber; scroll compressor 25, air-cooled condensing The device 26, the throttle valve 27 and the direct expansion evaporator 17 are sequentially connected through copper pipes to form a closed circuit to form a mechanical refrigeration evaporator/condenser unit D; the secondary exhaust fan 28 and the blower 18 jointly form a fan unit E.
二次排风机28和送风机18均为离心式变频风机。Both the secondary exhaust fan 28 and the blower fan 18 are centrifugal frequency conversion fans.
第一直接蒸发冷却单元，如图2所示，包括有直接蒸发冷却填料b23，直接蒸发冷却填料b23的上方设置有布水单元；直接蒸发冷却填料b 23的出风侧设置有填料式挡水板b24，直接蒸发冷却填料b 23和填料式挡水板b24的下方设置有集水箱，集水箱通过蓄水管30与盘管间接蒸发冷却器11连接，盘管间接蒸发冷却器11还通过供水管a31与布水单元连接。The first direct evaporative cooling unit, as shown in Figure 2, includes a direct evaporative cooling filler b23, and a water distribution unit is arranged above the direct evaporative cooling filler b23; Plate b24, direct evaporative cooling packing b 23 and packing water baffle b24 are provided with a water collection tank, the water collection tank is connected to the coil indirect evaporative cooler 11 through the water storage pipe 30, and the coil indirect evaporative cooler 11 is also supplied with water The pipe a31 is connected with the water distribution unit.
布水单元由布水管和多个均匀设置于布水管上且面向直接蒸发冷却填料b 23喷淋的喷嘴构成，布水管与供水管a31连接。The water distribution unit is composed of a water distribution pipe and a plurality of spray nozzles evenly arranged on the water distribution pipe and facing the direct evaporative cooling filler b23 for spraying, and the water distribution pipe is connected with the water supply pipe a31.
蓄水管30上设置有循环水泵b22；循环水泵b22为潜水泵。The water storage pipe 30 is provided with a circulating water pump b22; the circulating water pump b22 is a submersible pump.
第二直接蒸发冷却单元，如图2所示，包括有直接蒸发冷却填料a14，直接蒸发冷却填料a14的上方设置有喷淋单元；直接蒸发冷却填料a14的出风侧设置有填料式挡水板a16，直接蒸发冷却填料a14和填料式挡水板a16的下方设置有蓄水槽，蓄水槽通过第二供水管b32与喷淋单元连接。The second direct evaporative cooling unit, as shown in Figure 2, includes a direct evaporative cooling packing a14, a spray unit is arranged above the direct evaporative cooling packing a14; a packing type water baffle is arranged on the air outlet side of the direct evaporative cooling packing a14 a16, a water storage tank is provided under the direct evaporative cooling filler a14 and the filler water baffle a16, and the water storage tank is connected to the spray unit through the second water supply pipe b32.
喷淋单元由喷淋供水管和多个均匀设置于喷淋供水管上且面向直接蒸发冷却填料a14喷淋的喷头组成，喷淋供水管与第二供水管b32连接。The spray unit is composed of a spray water supply pipe and a plurality of spray heads evenly arranged on the spray water supply pipe and facing the direct evaporative cooling filler a14 for spraying, and the spray water supply pipe is connected with the second water supply pipe b32.
第二供水管b32上设置有循环水泵a15；循环水泵a15为潜水泵。The second water supply pipe b32 is provided with a circulating water pump a15; the circulating water pump a15 is a submersible pump.
本发明数据中心用封闭热通道-全回风干空气能中央空调系统中主要部件的作用分别如下：The functions of the main components in the closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention are as follows:
空气过滤单元A：由袋式初效过滤器b21和袋式初效过滤器a10构成；其中，袋式初效过滤器b21位于二次风进风口20处，袋式初效过滤器a10位于进风口9处，袋式初效过滤器b21和袋式初效过滤器a10联合起来用于对进入干空气能中央空调机组1内的回风进行过滤处理。Air filter unit A: It is composed of bag type primary effect filter b21 and bag type primary effect filter a10; among them, bag type primary effect filter b21 is located at the secondary air inlet 20, and bag type primary effect filter a10 is located at the inlet At the tuyere 9, the bag type primary effect filter b21 and the bag type primary effect filter a10 are combined to filter the return air entering the dry air energy central air conditioning unit 1 .
直接-盘管间接蒸发冷却单元B：将第一直接蒸发冷却单元与盘管间接蒸发冷却器11通过蓄水管30和第一供水管a31连接形成回路；第一直接蒸发冷却单元内集水箱中的水通过蓄水管30进入盘管间接蒸发冷却器11，此时能利用盘管间接蒸发冷却器11对经回风进风口9进入的新风进行预冷处理，而盘管间接蒸发冷却器11内的水吸收回风中的热量后，再由第一供水管a31送至布水单元内，由布水单元将水喷淋在直接蒸发冷却填料b 23上，并以此完成循环。Direct-coil indirect evaporative cooling unit B: connect the first direct evaporative cooling unit and the coil indirect evaporative cooler 11 through the water storage pipe 30 and the first water supply pipe a31 to form a circuit; The water enters the coil indirect evaporative cooler 11 through the water storage pipe 30. At this time, the coil indirect evaporative cooler 11 can be used to pre-cool the fresh air entering through the return air inlet 9, and the coil indirect evaporative cooler 11 After the water absorbs the heat in the return air, it is sent to the water distribution unit by the first water supply pipe a31, and the water distribution unit sprays the water on the direct evaporative cooling filler b23 to complete the cycle.
新/回风混合单元C：由呈上下设置的二次风室和回风室构成；且在回风室内设置有预热器12，回风室对应的机组壳体侧壁上设置有空调回风口13。Fresh/return air mixing unit C: It is composed of a secondary air chamber and a return air chamber arranged up and down; and a preheater 12 is installed in the return air chamber, and an air conditioner return is installed on the side wall of the unit shell corresponding to the return air chamber. Tuyere 13.
机械制冷蒸发器/冷凝器单元D：由涡旋式压缩机25、风冷式冷凝器26、节流阀27和直接膨胀式蒸发器17依次通过铜管连接构成闭合回路；其中，风冷式冷凝器26产生的冷凝热由工作空气带走，直接膨胀式蒸发器17能对产出空气进行除湿冷却。Mechanical refrigeration evaporator/condenser unit D: a closed circuit is formed by connecting a scroll compressor 25, an air-cooled condenser 26, a throttle valve 27 and a direct expansion evaporator 17 through copper tubes in sequence; among them, the air-cooled The condensation heat generated by the condenser 26 is taken away by the working air, and the direct expansion evaporator 17 can dehumidify and cool the produced air.
风机单元E：由二次排风机28和送风机18构成；二次排风机28用于将处理后的二次空气排出，送风机18用于将符合送风条件的冷风经送风管2、机房送风口3送入数据中心内的各条冷风通道内，实现对服务器机柜4内所有服务器的降温。Fan unit E: composed of a secondary exhaust fan 28 and a blower 18; the secondary exhaust fan 28 is used to discharge the treated secondary air, and the blower 18 is used to send cold air that meets the air supply conditions through the air supply pipe 2 and the machine room. The tuyere 3 is sent into each cold air channel in the data center to cool down all the servers in the server cabinet 4 .
本发明数据中心用封闭热通道-全回风干空气能中央空调系统的工作过程如下：The working process of the closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention is as follows:
在送风机18的动力作用下，来自数据中心中所有封闭热通道5内的热空气经回风管8输送至回风通道内，再由回风通道和回风进风口9将热空气送入干空气能中央空调机组1内的下风道中；Under the power of the blower 18, the hot air from all the closed hot aisles 5 in the data center is delivered to the return air passage through the return air duct 8, and then the hot air is sent into the dry air by the return air passage and the return air inlet 9. In the downwind channel of air energy central air conditioning unit 1;
由袋式初效过滤器a10对热空气进行过滤，形成洁净的热空气；The hot air is filtered by the bag-type primary filter a10 to form clean hot air;
通过开启干空气能中央空调机组1内不同的部件，对洁净的热空气进行相应的处理后，就能形成符合送风条件的空气；By turning on the different components in the central air-conditioning unit 1 of the dry air, the clean hot air can be processed accordingly to form air that meets the air supply conditions;
在送风机18的作用下，符合送风条件的空气经送风管2和机房送风口3输送至数据中心内，符合送风条件的空气在数据中心内弥漫送风的方式进入各条冷风通道内，接着进入每个服务器机柜4内，用于冷却服务器机柜4内的服务器，待服务器冷却完成后，符合送风条件的空气因吸收了服务器的热量而温度升高，再次成为热空气；Under the action of the air blower 18, the air that meets the air supply conditions is transported to the data center through the air supply pipe 2 and the air supply outlet 3 of the machine room, and the air that meets the air supply conditions enters the cold air channels in the data center in the form of diffuse air supply , and then enter each server cabinet 4 to cool the servers in the server cabinet 4. After the cooling of the servers is completed, the air that meets the air supply conditions will increase in temperature due to absorbing the heat of the servers, and become hot air again;
热空气流入封闭热通道5内，之后将这部分热空气作为数据中心内的回风，回风经数据中心内吊顶层6内的回风通道、回风管8进入干空气能中央空调机组1内的下风道中，并以此完成循环。The hot air flows into the closed hot aisle 5, and then this part of the hot air is used as the return air in the data center, and the return air enters the dry air energy central air conditioning unit 1 through the return air channel and the return air pipe 8 in the ceiling layer 6 of the data center In the downdraft inside, and thus complete the cycle.
本发明数据中心用封闭热通道-全回风干空气能中央空调系统能实现以下三种运行模式：The closed hot aisle-full return air dry air energy central air-conditioning system for the data center of the present invention can realize the following three operating modes:
(1)盘管间接蒸发冷却与机械制冷联合运行模式(IEC+DX)：该模式主要针对夏季工况，且数据中心负荷很大的情况；在该运行模式下要开启直接-盘管间接蒸发冷却单元B和机械制冷蒸发器/冷凝器单元D，具体的工作过程如下：(1) Coil indirect evaporative cooling and mechanical refrigeration combined operation mode (IEC+DX): This mode is mainly for summer working conditions, and the data center load is heavy; in this operation mode, direct-coil indirect evaporation should be turned on Cooling unit B and mechanical refrigeration evaporator/condenser unit D, the specific working process is as follows:
在送风机18的动力作用下，来自数据中心中封闭热通道5内的热空气经回风管8进入干空气能中央空调机组1内的下风道中；热空气经袋式初效过滤器a10过滤后形成洁净的热空气；洁净的热空气经直接-盘管间接蒸发冷却单元B内管间接蒸发冷却器11等湿冷却，之后进入机械制冷蒸发器/冷凝器单元D内，由直接膨胀式蒸发器17对其进行进一步的降温；最后在送风机18的作用下经送风管2和机房送风口3送入数据中心内的各条冷风通道内，用于冷却数据中心内的服务器。Under the power of the blower 18, the hot air from the closed hot aisle 5 in the data center enters the downwind duct of the dry air energy central air conditioning unit 1 through the return air duct 8; the hot air is filtered by the bag-type primary filter a10 Clean hot air is formed; the clean hot air is wet-cooled by the direct-coil indirect evaporative cooling unit B, the inner tube indirect evaporative cooler 11, etc., and then enters the mechanical refrigeration evaporator/condenser unit D, where the direct expansion evaporator 17 to further cool it; finally, under the action of the blower 18, it is sent into each cold air channel in the data center through the air supply pipe 2 and the air supply port 3 of the machine room, for cooling the servers in the data center.
室外空气在二次排风机28的作用下，由二次风进风口20进入干空气能中央空调机组1内的上风道中；室外空气经过袋式初效过滤器b21过滤后，形成洁净的二次空气；洁净的二次空气进入第一直接蒸发冷却单元内，在直接蒸发冷却填料b23处与直接蒸发冷却填料b23表面上的水膜发生热湿交换(由布水单元将水喷淋在直接蒸发冷却填料b23上，在直接蒸发冷却填料b23表面形成水膜)，形成二次冷风；二次冷风吹向风冷式冷凝器26，为其降温散热；最后吸收了冷凝热的空气在二次排风机28的作用下经二次风排风口29排到室外。Under the action of the secondary exhaust fan 28, the outdoor air enters the upper air duct of the dry air energy central air conditioning unit 1 from the secondary air inlet 20; the outdoor air is filtered by the bag type primary filter b21 to form a clean secondary air outlet. Air: clean secondary air enters the first direct evaporative cooling unit, and exchanges heat and moisture with the water film on the surface of the direct evaporative cooling filler b23 at the direct evaporative cooling filler b23 (the water is sprayed by the water distribution unit on the direct evaporative cooling On the filler b23, a water film is formed on the surface of the direct evaporative cooling filler b23) to form a secondary cold air; the secondary cold air is blown to the air-cooled condenser 26 to cool and dissipate heat for it; Under the effect of 28, discharge to the outside through secondary air outlet 29.
(2)盘管间接蒸发冷却与直接蒸发冷却联合运行模式(IDEC)：该模式主要针对过渡季节，且数据中心内发热量较小，同时又需要一定加湿的情况下；该运行模式下主要开启直接-盘管间接蒸发冷却单元B和第二直接蒸发冷却单元，具体工作过程如下：(2) Coil indirect evaporative cooling and direct evaporative cooling combined operation mode (IDEC): This mode is mainly for the transition season, and the heat generation in the data center is small, and a certain amount of humidification is required at the same time; in this operation mode, it is mainly turned on Direct-coil indirect evaporative cooling unit B and the second direct evaporative cooling unit, the specific working process is as follows:
在送风机18的动力作用下，来自数据中心中封闭热通道5内的热空气经回风管8进入干空气能中央空调机组1内的下风道中；热空气经袋式初效过滤器a10过滤后形成洁净的热空气；洁净的热空气经直接-盘管间接蒸发冷却单元B内盘管间接蒸发冷却器11等湿冷却，之后进入第二直接蒸发冷却单元内进行等焓降温，形成符合送风条件的空气；最后，符合送风条件的空气在送风机18的作用下经送风管2和机房送风口3送入数据中心内的各条冷风通道内，用于冷却数据中心内的各个服务器。Under the power of the blower 18, the hot air from the closed hot aisle 5 in the data center enters the downwind duct of the dry air energy central air conditioning unit 1 through the return air duct 8; the hot air is filtered by the bag-type primary filter a10 Form clean hot air; the clean hot air is wet-cooled by the direct-coil indirect evaporative cooling unit B inner coil indirect evaporative cooler 11, and then enters the second direct evaporative cooling unit for isenthalpic cooling to form a conforming air supply Conditional air; finally, the air that meets the air supply conditions is sent into each cold air channel in the data center through the air supply pipe 2 and the air supply port 3 of the machine room under the action of the air blower 18, and is used for cooling each server in the data center.
室外空气在二次排风机28的作用下，由二次风进风口20进入干空气能中央空调机组1内的上风道内；室外空气经袋式初效过滤器b21过滤后形成洁净的二次空气；洁净的二次空气进入第一直接蒸发冷却单元内，在直接蒸发冷却填料b23处与直接蒸发冷却填料b23表面上的水膜发生热湿交换(由布水单元将水喷淋在直接蒸发冷却填料b23上，在直接蒸发冷却填料b23表面形成水膜)，形成二次冷风；二次冷风吹向风冷式冷凝器26，为其降温散热；最后吸收了冷凝热的空气在二次排风机28的作用下经二次风排风口29排到室外。Under the action of the secondary exhaust fan 28, the outdoor air enters the upper air duct of the dry air energy central air conditioning unit 1 from the secondary air inlet 20; the outdoor air is filtered by the bag type primary filter b21 to form clean secondary air ; The clean secondary air enters the first direct evaporative cooling unit, and exchanges heat and moisture with the water film on the surface of the direct evaporative cooling filler b23 at the direct evaporative cooling filler b23 (the water is sprayed on the direct evaporative cooling filler by the water distribution unit On b23, a water film is formed on the surface of the direct evaporative cooling filler b23) to form a secondary cold wind; the secondary cold wind is blown to the air-cooled condenser 26 to cool down and dissipate heat for it; Under the effect of secondary air exhaust outlet 29, it is discharged to the outside.
(3)直接蒸发冷却(DEC)运行模式：主要针对过渡季节，且数据中心发热量小的情况下，此运行模式下只需开启第二直接蒸发冷却单元，具体工作过程如下：(3) Direct evaporative cooling (DEC) operating mode: mainly for transitional seasons, and when the heat generation of the data center is small, in this operating mode, only the second direct evaporative cooling unit needs to be turned on. The specific working process is as follows:
在送风机18的动力作用下，来自数据中心中封闭热通道5内的热空气经回风管8进入干空气能中央空调机组1内的下风道中；热空气经袋式初效过滤器a10过滤后，形成洁净的热空气；洁净的热空气进入第二直接蒸发冷却单元内，由第二直接蒸发冷却单元对洁净的热空气进行等焓降温处理，形成符合送风条件的空气；符合送风条件的空气在送风机18的作用下经送风管2和机房送风口3送入数据中心内的各条冷通道内，用于冷却数据中心内的各个服务器。Under the power of the blower 18, the hot air from the closed hot aisle 5 in the data center enters the downwind duct of the dry air energy central air conditioning unit 1 through the return air duct 8; the hot air is filtered by the bag-type primary filter a10 , forming clean hot air; the clean hot air enters the second direct evaporative cooling unit, and the second direct evaporative cooling unit performs isenthalpic cooling on the clean hot air to form air that meets the air supply conditions; meets the air supply conditions Under the action of the blower 18, the air is sent into each cold aisle in the data center through the air supply pipe 2 and the air supply port 3 of the machine room, and is used for cooling each server in the data center.
本发明数据中心用封闭热通道-全回风干空气能中央空调系统主要有以下两个工作循环过程：The closed hot aisle-full return air dry air energy central air conditioning system for the data center of the present invention mainly has the following two working cycle processes:
(1)机械制冷工作循环，具体过程如下：(1) Mechanical refrigeration working cycle, the specific process is as follows:
低温、低压的气态制冷剂经过涡旋式压缩机25压缩成高温、高压的气态制冷剂，然后进入风冷式冷凝器26内，经凝结放热变为低温、高压的液态制冷剂，之后通过节流阀27节流变为低温、低压的液态制冷剂，最后在直接膨胀式蒸发器17中吸热汽化变为低温、低压的气态制冷剂后流回涡旋式压缩机25继续循环。The low-temperature, low-pressure gaseous refrigerant is compressed by the scroll compressor 25 into a high-temperature, high-pressure gaseous refrigerant, and then enters the air-cooled condenser 26, where it becomes a low-temperature, high-pressure liquid refrigerant through condensation and exothermic heat. The throttling valve 27 turns the flow into a low-temperature, low-pressure liquid refrigerant, and finally absorbs heat and vaporizes in the direct expansion evaporator 17 to become a low-temperature, low-pressure gaseous refrigerant, and then flows back to the scroll compressor 25 to continue the cycle.
(2)盘管间接蒸发冷却工作循环，具体过程如下：(2) Coil indirect evaporative cooling working cycle, the specific process is as follows:
在直接-盘管间接蒸发冷却单元B内，循环水泵b22把集水箱内的水送入盘管间接蒸发冷却器11中，利用盘管间接蒸发冷却器11进入干空气能中央空调机组1内下风道中的回风进行等湿冷却(预冷)；经换热后的水由布水单元喷淋至上风道内直接蒸发冷却填料b23的表面，形成水膜，此时洁净的室外空气能在直接蒸发冷却填料b23处与水膜发生热湿交换，之后多余的水流回到集水箱内，以此往复循环。In the direct-coil indirect evaporative cooling unit B, the circulating water pump b22 sends the water in the water collection tank to the indirect evaporative cooler 11 of the coil, and the indirect evaporative cooler 11 enters the dry air energy downwind of the central air-conditioning unit 1 The return air in the channel is subjected to iso-humid cooling (pre-cooling); the water after heat exchange is sprayed by the water distribution unit to the surface of the direct evaporative cooling filler b23 in the upper air channel to form a water film. At this time, the clean outdoor air can be directly evaporatively cooled Heat and moisture exchange occurs between the filler b23 and the water film, and then the excess water flows back into the water collection tank, thus reciprocating.
本发明数据中心用封闭热通道-全回风干空气能中央空调系统，将蒸发冷却技术与机械制冷技术合理的结合，能有效保证数据中心全年供冷需求(能根据不同的气象条件实现三种运行模式的合理调节)；将数据中心内冷热气流隔离，很好的避免了冷热气流掺混的现象；全回风模式处理数据中心内高温干燥的空气，延长了蒸发冷却全年的运行时间，同时避免了直接引出新风冷却带来的空气过滤问题。The closed hot channel-full return air dry air energy central air-conditioning system for the data center of the present invention reasonably combines the evaporative cooling technology and the mechanical refrigeration technology, and can effectively guarantee the cooling demand of the data center throughout the year (three types can be realized according to different meteorological conditions) Reasonable adjustment of operation mode); isolate the hot and cold airflow in the data center, which avoids the mixing of hot and cold airflow; the full return air mode handles the high-temperature and dry air in the data center, prolonging the operation of evaporative cooling throughout the year At the same time, it avoids the air filtration problem caused by direct fresh air cooling.
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| CN112930073A (en) * | 2019-12-05 | 2021-06-08 | 北京京东尚科信息技术有限公司 | Heat exchange system for data center |
| CN111520929B (en) * | 2020-03-09 | 2021-06-29 | 华电电力科学研究院有限公司 | Method for power supply and three-stage cooling based on gas distributed energy and data center |
| CN111520929A (en) * | 2020-03-09 | 2020-08-11 | 华电电力科学研究院有限公司 | System and method based on gas distributed energy and data center power supply and three-level cooling |
| CN111447808B (en) * | 2020-05-13 | 2022-02-15 | 上海上证数据服务有限责任公司 | Diffuse type lateral air supply system |
| CN111447808A (en) * | 2020-05-13 | 2020-07-24 | 上海上证数据服务有限责任公司 | Diffuse type lateral air supply system |
| CN111623448A (en) * | 2020-06-02 | 2020-09-04 | 深圳市中科恒源技术有限公司 | Indirect evaporative cooling refrigerating unit and heat dissipation unit for data center machine room |
| CN111623448B (en) * | 2020-06-02 | 2025-04-22 | 深圳市中科恒源技术有限公司 | Indirect evaporative cooling refrigeration unit and heat dissipation unit for data center computer room |
| CN113108386A (en) * | 2021-04-30 | 2021-07-13 | 西藏宁算科技集团有限公司 | Air conditioning unit with wet film humidification function |
| CN113873833A (en) * | 2021-09-18 | 2021-12-31 | 珠海格力电器股份有限公司 | Machine room air conditioning system and corresponding control method |
| CN113873833B (en) * | 2021-09-18 | 2022-07-22 | 珠海格力电器股份有限公司 | Machine room air conditioning system and corresponding control method |
| CN114396672A (en) * | 2022-01-17 | 2022-04-26 | 沈阳澳蓝节能科技有限公司 | A composite evaporative cooling air unit for cooling the machine room |
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