CN108317648A - With CO2Data machine room heat pipe air conditioning system as refrigerant - Google Patents
With CO2Data machine room heat pipe air conditioning system as refrigerant Download PDFInfo
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- CN108317648A CN108317648A CN201810078844.6A CN201810078844A CN108317648A CN 108317648 A CN108317648 A CN 108317648A CN 201810078844 A CN201810078844 A CN 201810078844A CN 108317648 A CN108317648 A CN 108317648A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 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
- 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
-
- 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
-
- 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
- F24F2005/0039—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 a cryogen, e.g. CO2 liquid or N2 liquid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
本发明提供了一种以CO2为冷媒的数据机房热管空调***，包括至少一个热管冷凝器和设置于各机柜侧面的多个热管蒸发器，每一个所述热管蒸发器与多个小型风机组成一个冷却单元，安装在每个机柜的侧面，相邻的机柜与机柜之间不设密封侧板，所述风机可从所述冷却单元中移出进行检修或更换；所述多个热管蒸发器之间并联，并通过气管和液管与所述热管冷凝器之间相连接，所述热管冷凝器设置在数据机房外，由来自冷却塔或冷机的冷水进行冷却；所述热管空调***采用CO2作为热管内的冷媒。本发明既能实现数据机房的高效排热，又能满足CO2热管高压运行的工作条件，促进环保工质的应用。
The present invention provides a data room heat pipe air conditioning system using CO2 as a refrigerant, comprising at least one heat pipe condenser and multiple heat pipe evaporators arranged on the side of each cabinet, each heat pipe evaporator is composed of multiple small fans A cooling unit is installed on the side of each cabinet, and there is no sealed side plate between adjacent cabinets, and the fan can be removed from the cooling unit for maintenance or replacement; among the plurality of heat pipe evaporators The heat pipe condenser is connected in parallel with the heat pipe condenser through the gas pipe and the liquid pipe. The heat pipe condenser is arranged outside the data room and cooled by cold water from a cooling tower or chiller; the heat pipe air conditioning system adopts CO 2 as a refrigerant in the heat pipe. The invention can not only realize the high-efficiency heat discharge of the data machine room, but also meet the working conditions of the high-pressure operation of the CO2 heat pipe, and promote the application of environment-friendly working fluid.
Description
技术领域technical field
本发明涉及数据机房空调领域，尤其涉及一种以CO2为冷媒的数据机房热管空调***。The invention relates to the field of air conditioning in a data computer room, in particular to a heat pipe air conditioning system for a data computer room using CO2 as a refrigerant.
背景技术Background technique
近年来，由于数据机房中产热量大、散热密度高，其空调***能耗备受关注。目前，机柜级分离式热管***因其就近排热、高效节能的特点已经受到越来越多的认可。机柜级分离式热管***是将热管的蒸发器安装在每个机柜的后背板上，多个机柜上的热管蒸发器并联，共用一个或多个热管冷凝器，热管蒸发器和冷凝器之间通过气管和液管相连接。热管冷凝器安装在机房外，可利用室外空气、来自冷却塔的冷水或来自冷机的冷水进行冷却。In recent years, due to the high heat generation and high heat dissipation density in the data center, the energy consumption of its air conditioning system has attracted much attention. At present, the cabinet-level separated heat pipe system has been more and more recognized because of its nearby heat dissipation, high efficiency and energy saving features. The cabinet-level separated heat pipe system installs the evaporator of the heat pipe on the back panel of each cabinet. The heat pipe evaporators on multiple cabinets are connected in parallel and share one or more heat pipe condensers. Between the heat pipe evaporator and the condenser It is connected by air pipe and liquid pipe. The heat pipe condenser is installed outside the machine room and can be cooled by outside air, cold water from a cooling tower, or cold water from a chiller.
现有的热管***多采用R22、R134a等氟利昂作为管内冷媒，氟利昂的工作压力并不高，因此，气管和液管与热管蒸发器的连接处采用一段软管连接，以便于机柜柜门开启对机柜内设备进行检修、维护等操作。众所周知，氟利昂的GWP值普遍较高，且部分氟利昂对于臭氧层具有破坏作用，新型环保制冷剂逐渐取代氟利昂将是大势所趋。CO2是一种天然环保工质，具有较好的流动和传热性能，将其作为冷媒替代氟利昂应用于数据机房的热管***中具有重要的节能和环保意义，但在数据机房的温度环境下，CO2作为管内冷媒时，热管的工作压力高达5-7MPa，考虑到***耐压要求，热管蒸发器的进出口不能采用软管连接，也就是要求热管蒸发器固定不动，如果依然按照现有的机柜后背板式热管蒸发器，必然会导致机柜后柜门无法开启而影响正常使用。针对CO2这种冷媒研究新型的热管***尤其是热管蒸发器末端方式具有较大的实际意义。The existing heat pipe system mostly uses Freon such as R22 and R134a as the refrigerant in the pipe. The working pressure of Freon is not high. The equipment in the cabinet is inspected and maintained. As we all know, the GWP value of freon is generally high, and some freon has a destructive effect on the ozone layer. It will be the general trend that new environmentally friendly refrigerants will gradually replace freon. CO 2 is a natural and environmentally friendly working fluid with good flow and heat transfer performance. It is of great significance for energy saving and environmental protection to use it as a refrigerant instead of Freon in the heat pipe system of the data center. However, under the temperature environment of the data center , when CO 2 is used as the refrigerant in the pipe, the working pressure of the heat pipe is as high as 5-7MPa. Considering the pressure resistance requirements of the system, the inlet and outlet of the heat pipe evaporator cannot be connected by hoses, which means that the heat pipe evaporator is required to be fixed. Some cabinet rear panel heat pipe evaporators will inevitably cause the rear cabinet door to fail to open and affect normal use. It is of great practical significance to study new heat pipe systems, especially the end of heat pipe evaporator, for CO 2 as a refrigerant.
发明内容Contents of the invention
为实现环保工质CO2在数据机房的应用，本发明提出一种以CO2为冷媒的数据机房热管空调***，以CO2这种环保冷媒替代常规的氟利昂，同时提出一种适用于CO2的热管蒸发器末端型式，满足CO2热管的承压要求，本热管空调***具有传热能力强、传热效率高、节能、环保等优势。In order to realize the application of environmentally friendly CO 2 in the data room, the present invention proposes a data room heat pipe air conditioning system using CO 2 as the refrigerant, replacing the conventional Freon with CO 2 as an environmentally friendly refrigerant, and proposes a CO 2 The end type of the heat pipe evaporator meets the pressure requirements of the CO 2 heat pipe. This heat pipe air conditioning system has the advantages of strong heat transfer capacity, high heat transfer efficiency, energy saving, and environmental protection.
为解决上述技术问题，本发明采用以下技术方案予以实现：In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to achieve:
一种以CO2为冷媒的数据机房热管空调***，包括数据机房，所述数据机房内设置若干机柜，还包括至少一个热管冷凝器和设置于各机柜侧面的多个热管蒸发器，每一个所述热管蒸发器与多个小型风机组成一个冷却单元，安装在每个机柜的侧面，室内空气从排头第一个机柜的外侧面进入，贯穿整排机柜后，从排尾最后一个机柜的外侧面排出，即相邻的机柜与机柜之间不设密封侧板，排头与排尾两个机柜的外侧面也不设密封板，在所述风机的作用下，室内空气从排头第一个机柜的外侧面进入机柜，被服务器等设备产生的热量加热后，再被第一个机柜与第二个机柜之间的热管蒸发器冷却至室温，冷却后的空气再进入第二个机柜，重复上述过程，直至空气被排尾最后一个机柜外侧面的热管蒸发器冷却后排出；所述多个热管蒸发器之间并联，并通过气管和液管与所述热管冷凝器之间相连接，所述气管由所述热管蒸发器顶部接出，连接到所述热管冷凝器顶部，所述液管由所述热管蒸发器底部接出，连接到所述热管冷凝器底部；所述热管冷凝器设置在数据机房外，由来自冷却塔或冷机的冷水进行冷却。A data room heat pipe air conditioning system using CO2 as a refrigerant, including a data room, a number of cabinets are arranged in the data room, and at least one heat pipe condenser and a plurality of heat pipe evaporators arranged on the side of each cabinet, each of which The heat pipe evaporator and multiple small fans form a cooling unit, which is installed on the side of each cabinet. The indoor air enters from the outer side of the first cabinet at the head of the row, passes through the entire row of cabinets, and flows from the outer side of the last cabinet at the end of the row. Discharge, that is, there is no sealing side plate between the adjacent cabinets, and there is no sealing plate on the outer sides of the two cabinets at the head and the end of the row. Under the action of the fan, the indoor air flows from the first cabinet at the head The outer side enters the cabinet, is heated by the heat generated by the server and other equipment, and then is cooled to room temperature by the heat pipe evaporator between the first cabinet and the second cabinet, and the cooled air enters the second cabinet, repeating the above process , until the air is discharged after being cooled by the heat pipe evaporator on the outer side of the last cabinet in the row; the plurality of heat pipe evaporators are connected in parallel and connected with the heat pipe condenser through air pipes and liquid pipes. connected from the top of the heat pipe evaporator and connected to the top of the heat pipe condenser; the liquid pipe is connected from the bottom of the heat pipe evaporator and connected to the bottom of the heat pipe condenser; Outside the machine room, it is cooled by cold water from a cooling tower or chiller.
进一步地，所述热管空调***采用CO2作为热管内的冷媒。Further, the heat pipe air conditioning system uses CO 2 as the refrigerant in the heat pipe.
所述数据机房通常是指建筑中的房间；机柜是指数据机房内放置服务器等电子设备的柜子，通常数据机房内会设置多个机柜。The data room generally refers to a room in a building; a cabinet refers to a cabinet in which electronic equipment such as a server is placed in the data room, and usually a plurality of cabinets are arranged in the data room.
进一步地，所述热管蒸发器布满整个机柜侧面，且不可移动，所述多个小型风机呈矩阵排列在机柜侧面热管蒸发器的一侧，并且可从所述冷却单元中移出进行检修或更换。Further, the heat pipe evaporator covers the entire side of the cabinet and is not movable, and the plurality of small fans are arranged in a matrix on one side of the heat pipe evaporator on the side of the cabinet, and can be removed from the cooling unit for maintenance or replacement .
进一步地，所述热管蒸发器采用翅片管式换热器，换热段采用多管并联同程式结构，管材为纯铜，管内径4mm，管壁厚1mm。Further, the heat pipe evaporator adopts a finned tube heat exchanger, and the heat exchange section adopts a parallel multi-tube structure, the tube material is pure copper, the inner diameter of the tube is 4 mm, and the tube wall thickness is 1 mm.
进一步地，所述热管冷凝器以水为冷却介质，采用管壳式换热器或板式换热器。Further, the heat pipe condenser uses water as a cooling medium, and adopts a shell-and-tube heat exchanger or a plate heat exchanger.
所述气管和液管的管材为纯铜，管径根据实际负荷设计确定，管壁厚需保证8MPa以上的耐压强度。The pipe material of the gas pipe and the liquid pipe is pure copper, the pipe diameter is determined according to the actual load design, and the pipe wall thickness needs to ensure the compressive strength above 8MPa.
所述气管和液管与所述热管蒸发器和冷凝器的连接采用不锈钢卡套接头。The connection between the air pipe and the liquid pipe and the heat pipe evaporator and condenser adopts stainless steel ferrule joints.
所述热管空调***须保证管内CO2温度不高于其临界温度31.4℃，如果在所述热管空调***停止运行期间存在温度过高的危险，应采取适当的冷却措施，或者排出热管内的CO2。The heat pipe air-conditioning system must ensure that the temperature of CO in the pipe is not higher than its critical temperature of 31.4°C. If there is a danger of overheating during the shutdown of the heat pipe air-conditioning system, appropriate cooling measures should be taken, or the CO in the heat pipe should be discharged. 2 .
相对于现有技术，本发明具有以下优点：采用CO2替代常规的氟利昂用于数据机房的热管空调***，既环保，又具备更高的传热能力和传热性能。提出一种机柜侧送风的热管蒸发器末端型式，一方面取消***中的软管连接，使***具备较高的承压能力，满足CO2这种工质的应用条件，另一方面由于机柜侧面积大于机柜后背板面积，增大了机柜送风的迎风面积，进一步减小风速，降低风机能耗。Compared with the prior art, the present invention has the following advantages: CO2 is used instead of conventional Freon for the heat pipe air conditioning system of the data room, which is not only environmentally friendly, but also has higher heat transfer capacity and performance. A heat pipe evaporator terminal type with air supply from the side of the cabinet is proposed. On the one hand, the hose connection in the system is eliminated, so that the system has a higher pressure bearing capacity and meets the application conditions of CO2 as a working medium. On the other hand, due to the The side area is larger than the area of the back panel of the cabinet, which increases the windward area of the cabinet for air supply, further reduces the wind speed, and reduces the energy consumption of the fan.
附图说明Description of drawings
下面将结合附图及实施例对本发明作进一步说明，附图中：The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:
图1是本发明的***结构示意图；Fig. 1 is a schematic diagram of the system structure of the present invention;
图2是本发明所述热管蒸发器末端俯视图。Fig. 2 is a top view of the end of the heat pipe evaporator according to the present invention.
其中：1-热管蒸发器，2-风机，3-气管，4-液管，5-热管冷凝器，6-冷却水管，7-机柜后柜门。Among them: 1-heat pipe evaporator, 2-fan, 3-gas pipe, 4-liquid pipe, 5-heat pipe condenser, 6-cooling water pipe, 7-cabinet rear cabinet door.
具体实施方式Detailed ways
下面结合附图和实施例对本发明做进一步的详细说明。可以理解的是，此处所描述的具体实施例仅用于解释本发明，而非对本发明的限定。另外还需说明的是，为了便于描述，附图中仅标示出与本发明相关的部分而非全部内容。The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. It should also be noted that, for the convenience of description, only parts related to the present invention are marked in the drawings but not all content.
如图1和图2所示，本发明的以CO2为冷媒的数据机房热管空调***，包括一个热管冷凝器5、多个机柜和与机柜数量相同的热管蒸发器1，多个机柜并排连接，且机柜的两个侧面均不设密封板，空气可横穿各个机柜，每个热管蒸发器1连同多个小型风机2构成一个冷却单元，设置在各机柜的侧面，各热管蒸发器1之间并联，共用一个热管冷凝器5。As shown in Fig. 1 and Fig. 2, the data room heat pipe air conditioning system using CO as the refrigerant of the present invention includes a heat pipe condenser 5, a plurality of cabinets and heat pipe evaporators 1 having the same number as the cabinets, and the plurality of cabinets are connected side by side , and there are no sealing plates on both sides of the cabinet, the air can cross each cabinet, each heat pipe evaporator 1 together with a plurality of small fans 2 constitute a cooling unit, which is arranged on the side of each cabinet, between each heat pipe evaporator 1 They are connected in parallel and share a heat pipe condenser 5.
热管空调***内充注CO2作为冷媒，其充液率为100％，即在热管不运行的状态下，管内液态CO2的体积与热管蒸发器1的总体积之比为100％。机柜内电子设备的发热量被横穿机柜的空气带走，被加热后的空气与热管蒸发器1进行换热而被冷却，热管蒸发器1被空气加热，管内的CO2吸热沸腾、密度减小，沿气管3上升并进入热管冷凝器5，CO2在热管冷凝器5中被冷水冷却而放热凝结，密度增大，最终沿液管4下降流回到热管蒸发器1，完成一个循环。热管冷凝器5的位置高于各热管蒸发器1，两者之间需具有一定的高差。The heat pipe air conditioning system is filled with CO2 as a refrigerant, and its liquid filling rate is 100%, that is, when the heat pipe is not running, the ratio of the volume of liquid CO2 in the pipe to the total volume of the heat pipe evaporator 1 is 100%. The calorific value of the electronic equipment in the cabinet is taken away by the air crossing the cabinet, and the heated air exchanges heat with the heat pipe evaporator 1 to be cooled. The heat pipe evaporator 1 is heated by the air, and the CO2 in the pipe absorbs heat and boils, and the density Decrease, rise along the gas pipe 3 and enter the heat pipe condenser 5, CO2 is cooled by cold water in the heat pipe condenser 5 to release heat and condense, the density increases, and finally descends along the liquid pipe 4 and returns to the heat pipe evaporator 1, completing a cycle. The position of the heat pipe condenser 5 is higher than that of each heat pipe evaporator 1, and there must be a certain height difference between them.
室内空气从排头第一个机柜(图1和图2中的最右侧机柜)的外侧面进入，贯穿整排机柜后，从排尾最后一个机柜的外侧面排出，空气的加热和冷却过程几乎都在机柜内进行，进入和排出机柜的空气温度基本相同。采用机柜侧送风方式，利用机柜侧面进行排热，不影响机柜前、后两个面上的检修和维护操作。Indoor air enters from the outer side of the first cabinet in the row (the rightmost cabinet in Figure 1 and Figure 2), passes through the entire row of cabinets, and is discharged from the outer side of the last cabinet in the row. The heating and cooling process of the air is almost It is all done inside the cabinet, and the temperature of the air entering and exiting the cabinet is basically the same. The side air supply mode of the cabinet is adopted, and the side of the cabinet is used for heat dissipation, which does not affect the inspection and maintenance operations on the front and rear sides of the cabinet.
热管冷凝器5由来自冷却塔或冷机的冷水6进行冷却，当室外温度不高、冷却塔出水温度可以满足冷却要求时，冷机不需要开启，直接利用自然冷源进行排热，当室外温度较高、冷却塔出水温度不能满足冷却要求时，开启冷机以制得更低温度的冷水。The heat pipe condenser 5 is cooled by the cold water 6 from the cooling tower or chiller. When the outdoor temperature is not high and the outlet water temperature of the cooling tower can meet the cooling requirements, the chiller does not need to be turned on, and the natural cooling source is directly used to discharge heat. When the outdoor When the temperature is high and the outlet water temperature of the cooling tower cannot meet the cooling requirements, the chiller is turned on to produce cold water at a lower temperature.
热管蒸发器1采用翅片管式换热器，采用多管并联同程式结构，管材为纯铜，管内径4mm，管壁厚1mm，换热器布满整个机柜侧面，且不可移动。多个小型风机2呈矩阵排列在机柜侧面热管蒸发器的一侧，风机可脱离热管蒸发器而整体移出，以进行检修或更换。Heat pipe evaporator 1 adopts finned tube heat exchanger, adopts multi-tube parallel structure, the tube is made of pure copper, the inner diameter of the tube is 4mm, and the wall thickness of the tube is 1mm. The heat exchanger covers the entire side of the cabinet and cannot be moved. A plurality of small fans 2 are arranged in a matrix on one side of the heat pipe evaporator on the side of the cabinet, and the fans can be removed from the heat pipe evaporator as a whole for maintenance or replacement.
气管3的一端连接到热管蒸发器1的顶部，另一端连接到热管冷凝器5的顶部，液管4的一端连接到热管蒸发器1的底部，另一端连接到热管冷凝器5的底部。气管3和液管4的管材为纯铜，由于CO2的气、液密度相差不是太大，因此气管3和液管4选取相同的管径，管径大小根据实际负荷设计确定，负荷越大，则管径越大。气管3和液管4的管壁厚需保证8MPa以上的耐压强度。气管3、液管4与热管蒸发器1和冷凝器5的连接采用不锈钢卡套接头。One end of gas pipe 3 is connected to the top of heat pipe evaporator 1, and the other end is connected to the top of heat pipe condenser 5. One end of liquid pipe 4 is connected to the bottom of heat pipe evaporator 1, and the other end is connected to the bottom of heat pipe condenser 5. The pipe material of gas pipe 3 and liquid pipe 4 is pure copper. Since the gas and liquid density difference of CO2 is not too large, the same pipe diameter is selected for gas pipe 3 and liquid pipe 4. The diameter of the pipe is determined according to the actual load design. The greater the load , the larger the pipe diameter. The pipe wall thickness of gas pipe 3 and liquid pipe 4 needs to ensure the compressive strength above 8MPa. The gas pipe 3, the liquid pipe 4 are connected with the heat pipe evaporator 1 and the condenser 5 using stainless steel ferrule joints.
热管空调***须保证管内CO2温度不高于其临界温度31.4℃，正常情况下，数据机房内的热管空调***需全年每天24小时连续运行，在运行状态下，热管工作温度是不会超过CO2临界温度的，但如果出现热管空调***停止运行的特殊情况，其间可能存在温度过高的危险，此时应采取适当的冷却措施，或者排出热管内的CO2。The heat pipe air conditioning system must ensure that the CO2 temperature in the pipe is not higher than its critical temperature of 31.4°C. Under normal circumstances, the heat pipe air conditioning system in the data room needs to run continuously 24 hours a day throughout the year. However, if there is a special situation where the heat pipe air-conditioning system stops running , there may be a danger of overheating. At this time, appropriate cooling measures should be taken, or the CO 2 in the heat pipe should be discharged.
以上所述，仅是本发明的较佳实施例而已，并非是对本发明作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本发明技术方案的保护范围。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belong to the protection scope of the technical solution of the present invention.
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