CN103615780A - System for reducing machine room temperature - Google Patents
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- CN103615780A CN103615780A CN201310606934.5A CN201310606934A CN103615780A CN 103615780 A CN103615780 A CN 103615780A CN 201310606934 A CN201310606934 A CN 201310606934A CN 103615780 A CN103615780 A CN 103615780A
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Abstract
The invention provides a system for reducing machine room temperature. The system comprises an air conditioner, a return air channel, an outdoor air channel, a heat transfer plate and a controller. The return air channel is used for enabling hot air in a machine room to flow back to the air conditioner. The outdoor air channel is used for enabling outdoor air to circulate in the outdoor air channel. The heat transfer plate is arranged between the return air channel and the outdoor air channel, and carries out heat exchange on the hot air in the return air channel and the outdoor air in the outdoor air channel. The controller is used for controlling the air conditioner to carry out refrigeration according to a preset condition. According to the system, the machine room temperature is reduced, the cooling load of the machine room is reduced, mechanical refrigeration operating time is shortened, the total energy consumption of a data center is reduced, and the energy saving effect is obvious.
Description
Technical field
The present invention relates to center monitoring technical field, relate in particular to a kind of system that reduces computer room temperature.
Background technology
Along with the constantly soaring and attention of people to environmental protection of energy cost, the energy-conservation demand of data center is more and more stronger.Guaranteeing under the prerequisite of data center machine room information technoloy equipment safety, high-performance operation, fully utilize various energy saving means, improve the efficiency of energy utilization of data center, reduce PUE(Power Usage Effectiveness, the index of evaluating data center energy efficiency).In other words, energy-saving and emission-reduction have become one of important goal of data center's infrastructure pursuit.
At present, available data center adopts mechanical refrigeration mode to reduce machine room return air temperature conventionally, and high temperature return air enters precision air conditioner, by precision air conditioner, is cooled to by blower fan, deliver to machine room to information technoloy equipment cooling after ventilation state point.In addition, adopting air side directly to carry out the cooling system ， data center of nature also has small-scale application,, after outdoor new wind is processed, directly introduces machine room to information technoloy equipment cooling that is.
Yet there is following shortcoming in current existing mode, adopt the mode that is reduced machine room return air temperature by precision air conditioner completely, air-conditioning system will be carried out mechanical refrigeration in the annual most of the time, and therefore, energy consumption is very large; Adopt directly naturally cooling power save mode of air side, because needs are introduced outdoor new wind in machine room, cause machine room can be subject to the risk that outdoor pollutant is invaded, be difficult to assurance information technoloy equipment safely, stable operation, and cooling effect is bad, cooling effectiveness is low.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, the object of the invention is to propose a kind of system that reduces computer room temperature.This system can reduce computer room temperature, reduces machine room refrigeration duty, reduces mechanical refrigeration running time, reduces data center's overall energy consumption, and energy-saving effect is remarkable.
To achieve these goals, the system of the reduction computer room temperature of the embodiment of the present invention, comprising: air-conditioning; Return air channel, described return air channel is for making the thermal air current of machine room be back to described air-conditioning; Outdoor wind passage, described outdoor wind passage is used for making outdoor air to circulate at described outdoor wind passage; Heat-conducting plate, described heat-conducting plate is arranged between described return air channel and described outdoor wind passage, and described heat-conducting plate carries out heat exchange to the described outdoor air in the described hot-air in described return air channel and described outdoor wind passage; And controller, described controller freezes for controlling described air-conditioning according to default condition.
The system of the reduction computer room temperature of the embodiment of the present invention, by using heat-conducting plate, realized the indirect heat exchange of the hot-air of machine room high temperature and the outdoor air of outdoor low temperature, effectively utilized on the one hand the cold of outdoor air in outdoor environment, reduce the refrigeration duty of mechanical refrigeration equipment, reduce the running time of mechanical refrigeration equipment simultaneously, reduce the overall energy consumption of data center, reached the object of energy-saving and emission-reduction; Can reduce on the other hand machine room and be subject to the risk that outdoor pollutant is invaded machine room, guarantee the operation that information technoloy equipment is safe, stable.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein,
Fig. 1 is the flow chart of system of the reduction computer room temperature of one embodiment of the invention;
Fig. 2 is the structural representation of the folding shape heat-conducting plate of one embodiment of the invention;
Fig. 3 is the structural representation of the zigzag heat-conducting plate of one embodiment of the invention; And
Fig. 4 is the structural representation of system of the reduction computer room temperature of another embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.On the contrary, embodiments of the invention comprise spirit and all changes within the scope of intension, modification and the equivalent that falls into additional claims.
In description of the invention, it will be appreciated that, term " first ", " second " etc. are only for describing object, and can not be interpreted as indication or hint relative importance.In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connects integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.In addition,, in description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In flow chart or any process of otherwise describing at this or method describe and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of the step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The system of the reduction computer room temperature of the embodiment of the present invention is described below with reference to accompanying drawing.
At present, data center machine room adopts mechanical refrigeration mode to reduce the hot-air in machine room return air channel conventionally.Yet, adopt mechanical refrigeration mode to move mechanical refrigeration equipment in the annual most of the time, therefore, energy consumption is larger, can not meet the target of data center's energy-saving and emission-reduction.If the machine room for furred ceiling air-return, can in machine room return air furred ceiling, heat-conducting plate be installed, original furred ceiling region is divided into two parts, the latter half is the furred ceiling return air district of air-conditioning, and the first half is outdoor wind flow district, and the furred ceiling return air district in machine room and outdoor wind district are by heat-conducting plate indirect heat exchange, can reduce mechanical refrigeration equipment refrigeration duty, reduce mechanical refrigeration running time, thereby reduced the overall energy consumption of data center, reached the object of energy-saving and emission-reduction.For this reason, the present invention proposes a kind of system that reduces computer room temperature.
Fig. 1 is the flow chart of system of the reduction computer room temperature of one embodiment of the invention.Fig. 2 is the structural representation of the folding shape heat-conducting plate of one embodiment of the invention.Fig. 3 is the structural representation of the zigzag heat-conducting plate of one embodiment of the invention.
As shown in Figure 1, the system of reduction computer room temperature comprises: air-conditioning 1, return air channel 2, outdoor wind passage 3, heat-conducting plate 4, controller 5, motor-driven valve 6, the first blower fan 7 and high pressure sprays fog equipment 8.
Particularly, the hot-air that in machine room, a plurality of racks produce can flow into return air channel 2 under the fan action of air-conditioning 1 from machine room, by return air channel 2, flow into air-conditioning 1,1 pair of hot-air cooling of air-conditioning, and the air after cooling is returned in machine room by raised flooring again, give a plurality of racks and the cooling of the information technoloy equipment in rack in machine room.
Outdoor wind passage 3 is for making outdoor air in outdoor wind passage 3 circulations.Wherein, outdoor wind passage 3 can be formed on the top of machine room.
Heat-conducting plate 4 is arranged between return air channel 2 and outdoor wind passage 3, and the hot-air in 4 pairs of return air channels 2 of heat-conducting plate and the outdoor air in outdoor wind passage 3 carry out heat exchange.Wherein, the material of heat-conducting plate 4 preferably can be used the good metal of heat-conducting effect, for example, and aluminium sheet, copper coin etc.The shape of heat-conducting plate 4 can be but is not limited to folding shape as shown in Figure 2, or zigzag as shown in Figure 3.More specifically, folding shape or zigzag heat-conducting plate 4 can increase the area that hot-air and outdoor air carry out heat exchange.That is to say, heat-conducting plate 4 is installed in the furred ceiling of machine room, original furred ceiling region is divided into two parts.The latter half is the return air channel 2 of hot-air, the outdoor wind passage 3 that the first half is outdoor air.Hot-air in machine room flows into in return air channel 2 time, can to hot-air, carry out indirectly heat exchange by outdoor air mobile in heat-conducting plate 4 and outdoor wind passage 3, thus, can reduce the temperature of hot-air in return air channel 2.Should be appreciated that folding shape or zigzag heat-conducting plate 4 in the present invention are only the exemplary illustrations in the embodiment of the present invention, the shape of heat-conducting plate 4 also can be other shapes that is conducive to heat exchange.
Controller 5(is not shown) for controlling air-conditioning 1 according to default condition, freeze.Wherein, default condition can be to give tacit consent in system, can be also that keeper arranges according to demand in system.Following middle meeting is introduced in detail controller 5 and is controlled the mode that air-conditioning 1 freezes.
In one embodiment of the invention, the system of reduction computer room temperature also comprises motor-driven valve 6.Particularly, motor-driven valve 6 is arranged on air inlet or the air outlet place of outdoor wind passage 3, preferably, can motor-driven valve 6 be all installed at air inlet and the air outlet place of outdoor wind passage 3, when summer, outside air temperature was higher, in order to prevent that refrigeration duty from importing machine room into, the temperature of outdoor air is higher than the hot-air in return air channel 2, and controller 5 can control the motor-driven valve 6 of cutting out air inlet and air outlet place.When outside air temperature is during lower than hot-air in return air channel 2, controller 5 can be controlled the motor-driven valve 6 that reopens air inlet and air outlet place.
In one embodiment of the invention, the system of reduction computer room temperature also comprises the first blower fan 7.Particularly, the first blower fan 7 is arranged on the air inlet of outdoor wind passage 3/or air outlet place, the first blower fan 7 for outdoor air is introduced/or draw outdoor wind passage 3.Preferably, the first blower fan 7 can be arranged on the air outlet place of outdoor wind passage 3, and the first blower fan 7 makes the flow direction of hot-air in the flow direction of outdoor air in outdoor wind passage 3 and return air channel 2 contrary.In other words, the trend of the hot-air in return air channel 2 and outdoor air in outdoor wind passage 3 should be consistent with the conduit direction in heat-conducting plate 4.Thus, can reduce air drag, and can strengthen the flow effect of outdoor air in outdoor wind passage 3 by the first blower fan 7, make outdoor air and hot-air carry out the better effects if of heat exchange.
In one embodiment of the invention, the system of reduction computer room temperature also comprises high pressure sprays fog equipment 8.Particularly, high pressure sprays fog equipment 8 is arranged on the air inlet place of outdoor wind passage 3, and high pressure sprays fog equipment 8 is for spraying high-pressure water mist to outdoor wind passage 3.More specifically, at the air inlet place of outdoor wind passage 3 installation high-voltage sprayer unit 8, when condition is suitable, for example, when the dry-bulb temperature of outdoor air is higher than wet-bulb temperature, open high pressure sprays fog equipment 8.Thus, can reduce the dry-bulb temperature of outdoor air in outdoor wind passage 3, further strengthen the effect that outdoor air and hot-air carry out heat exchange.
In one embodiment of the invention, controller 5 is specifically for the wet-bulb temperature when outdoor air during lower than the first predetermined threshold value, and motor-driven valves 6 controlled by controller 5 or the first blower fan 7 is opened, and controls air-conditioning 1 and stop refrigeration; When the wet-bulb temperature of outdoor air higher than/or equal the first predetermined threshold value and during lower than the second predetermined threshold value, motor-driven valves 6 controlled by controller 5 or the first blower fan 7 is opened, and control air-conditioning 1 and freeze; When the wet-bulb temperature of outdoor air higher than/or while equaling the second predetermined threshold value, motor-driven valves 6 controlled by controller 5 or the first blower fan 7 cuts out, and control air-conditioning 1 and freeze.Wherein, first and second predetermined threshold value can be the temperature value of giving tacit consent in system, can also be the temperature value that keeper arranges in system according to different demands.For example, the first predetermined threshold value can be 20 ℃, and the second predetermined threshold value can be 35 ℃.Should be appreciated that the second predetermined threshold value should be greater than the first predetermined threshold value.
In one embodiment of the invention, controller 5 is also for when the dry-bulb temperature of outdoor air is greater than or equal to the first predetermined threshold value, and the wet-bulb temperature of outdoor air is during lower than the second predetermined threshold value, and controller 5 is controlled high pressure sprays fog equipments 8 and opened.
Illustrate the mode that controller 5 control systems are lowered the temperature below: the air-conditioning temperature of supposing machine room is 23 degree, the temperature of the hot-air of return air is 35 degree, and the first predetermined threshold value is 20 degree, and the second predetermined threshold value is 35 degree.Controller 5 can be lowered the temperature to machine room according to following pre-conditioned control system respectively:
(1) when, the wet-bulb temperature of the outdoor air in entering outdoor wind passage 3 is spent lower than 20, motor-driven valve 6 controlled by controller 5 and the first blower fan 7 is opened, and controlling air-conditioning 1 does not freeze, directly utilize the hot-air in outdoor air and return air channel 2 to carry out indirect heat exchange, reduce the temperature of hot-air to the wind pushing temperature of setting, then by the blower fan in air-conditioning 1, directly cooled return air being sent into again to machine room is that information technoloy equipment is lowered the temperature.
(2) when, the dry-bulb temperature of the outdoor air in entering outdoor wind passage 3 is spent higher than 20, and when the wet-bulb temperature of outdoor air is spent lower than 20, controller 5 is controlled motor-driven valve 6 and the first blower fan 7 and high pressure sprays fog equipment 8 and is opened, and controlling air-conditioning 1 does not freeze, utilize the wet-bulb temperature of outdoor air to lower the temperature to dry-bulb temperature, strengthen heat transfer effect.And directly utilize the hot-air in outdoor air and return air channel 2 to carry out indirect heat exchange, reduce the temperature of hot-air to the wind pushing temperature of setting, then by the blower fan in air-conditioning 1, directly cooled return air being sent into again to machine room is that information technoloy equipment is lowered the temperature.
(3), the wet-bulb temperature of the outdoor air in entering outdoor wind passage 3 is higher than 20 degree and while not spending higher than 35, controller 5 is controlled motor-driven valve 6 and the first blower fan 7 and high pressure sprays fog equipment 8 and is opened, and controlling air-conditioning 1 freezes, utilize 8 pairs of dry-bulb temperatures of high pressure sprays fog equipment to lower the temperature, strengthen heat transfer effect.And the hot-air in outdoor air and return air channel 2 carries out indirect heat exchange, then by the cooling tube in air-conditioning 1, further reduce the temperature of return air, and be down to after wind pushing temperature in the temperature of return air, then by blower fan, cooled return air being sent into machine room is again that information technoloy equipment is lowered the temperature.
(4), the wet-bulb temperature of the outdoor air in entering outdoor wind passage 3 is higher than 35 time; controller 5 controls motor-driven valve 6 and the first blower fan 7 and high pressure sprays fog equipment 8 and cuts out; that is to say; close chamber's exogenous wind passage 3; controller 5 is controlled air-conditioning 1 and is freezed, and bears the refrigeration duty of machine room completely by air-conditioning 1.
The system of the reduction computer room temperature of the embodiment of the present invention, by using heat-conducting plate, realized the indirect heat exchange between the hot-air of machine room high temperature and the outdoor air of outdoor low temperature, and by motor-driven valve, the first blower fan, and high pressure sprays fog equipment strengthens radiating effect, effectively utilized on the one hand the cold of outdoor air in outdoor environment, reduce the refrigeration duty of mechanical refrigeration equipment, reduce the running time of mechanical refrigeration equipment simultaneously, reduce the overall energy consumption of data center, reached the object of energy-saving and emission-reduction; Can reduce on the other hand machine room and be subject to the risk that outdoor pollutant is invaded machine room, guarantee the operation that information technoloy equipment is safe, stable.
In another embodiment, outdoor wind passage 3 can also be formed on the side of machine room.Can also adopt heat exchanger to carry out the hot-air of machine room and the indirect heat exchange of outdoor Cryogenic air.Particularly, Fig. 4 is the structural representation of system of the reduction computer room temperature of another embodiment of the present invention.As shown in Figure 4, the system of reduction computer room temperature also comprises: heat exchanger 9, the second blower fan 10 and the 3rd blower fan 11.
Particularly, heat exchanger 9 is arranged on the side of machine room, and heat exchanger 9 dispels the heat for the hot-air that return air channel 2 is flowed out.Wherein, heat exchanger 9 is comprised of a plurality of heat pipes, heat pipe can for but be not limited to the good metal of heat-conducting effect, for example, aluminum pipe, copper pipe etc.
The second blower fan 10, the second blower fans 10 are arranged on the air outlet place of return air channel 2, and the second blower fan 10 is for being introduced into heat exchanger 9 by the hot-air of return air channel 2.
The 3rd blower fan 11, the three blower fans 11 are arranged on the top of heat exchanger 9, and the 3rd blower fan 11 is for discharging the outdoor air of heat exchanger 9 peripheries.Particularly, the hot-air in return air channel 2 can be introduced in heat exchanger 9 by the second blower fan 10.Outdoor air is in the direction of the heat pipe perpendicular to heat exchanger 9, by the 3rd blower fan 11 flowing from bottom to top.Hot-air in heat pipe and the outdoor air outside heat pipe carry out heat exchange indirectly, reduce the temperature of hot-air, then by air-conditioning 1, the hot air treatment after processing to be sent into machine room again to the return air of default temperature be that information technoloy equipment is lowered the temperature.
Be to be understood that, system in the embodiment of the present invention is also to strengthen radiating effect by motor-driven valve and high pressure sprays fog equipment, and the installation site of motor-driven valve and high pressure sprays fog equipment and working method, and the working method of controller control motor-driven valve, the second blower fan, the 3rd blower fan and high pressure sprays fog equipment all can, with reference to the mode in previous embodiment, repeat no more herein.
The system of the reduction computer room temperature of the embodiment of the present invention, by using heat exchanger, hot-air in return air channel is introduced in heat exchanger and carries out indirect heat exchange with outdoor air, take full advantage of outdoor free low-temperature receiver, can reduce mechanical refrigeration equipment refrigeration duty on the one hand, reduce mechanical refrigeration running time, reduce the overall energy consumption of data center, reached the object of energy-saving and emission-reduction.Can reduce on the other hand machine room simultaneously and be subject to the risk that outdoor pollutant is invaded, guarantee the operation that information technoloy equipment is safe, stable.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, a plurality of steps or method can realize with being stored in memory and by software or the firmware of suitable instruction execution system execution.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: have for data-signal being realized to the discrete logic of the logic gates of logic function, the special IC with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (13)
1. a system that reduces computer room temperature, is characterized in that, comprising:
Air-conditioning;
Return air channel, described return air channel is for making the thermal air current of machine room be back to described air-conditioning;
Outdoor wind passage, described outdoor wind passage is used for making outdoor air to circulate at described outdoor wind passage;
Heat-conducting plate, described heat-conducting plate is arranged between described return air channel and described outdoor wind passage, and described heat-conducting plate carries out heat exchange to the described outdoor air in the described hot-air in described return air channel and described outdoor wind passage; And
Controller, described controller freezes for controlling described air-conditioning according to default condition.
2. the system as claimed in claim 1, is characterized in that, also comprises:
Motor-driven valve, described motor-driven valve is arranged on air inlet or the air outlet place of described outdoor wind passage, and described motor-driven valve is used for opening /Huo close chamber exogenous wind passage.
3. the system as claimed in claim 1, is characterized in that, also comprises:
The first blower fan, described the first assembling is at the air inlet of described outdoor wind passage/or air outlet place, described the first blower fan for described outdoor air is introduced/or draw described outdoor wind passage.
4. system as claimed in claim 2 or claim 3, is characterized in that, described controller specifically for:
When the wet-bulb temperature of described outdoor air is during lower than the first predetermined threshold value, described motor-driven valve controlled by described controller or described the first blower fan is opened, and controls described air-conditioning and stop refrigeration;
When the wet-bulb temperature of described outdoor air higher than/or equal the first predetermined threshold value and during lower than the second predetermined threshold value, described motor-driven valve controlled by described controller or described the first blower fan is opened, and control described air-conditioning and freeze; And
When the wet-bulb temperature of described outdoor air higher than/or while equaling the second predetermined threshold value, described motor-driven valve controlled by described controller or described the first blower fan cuts out, and control described air-conditioning and freeze.
5. system as claimed in claim 4, is characterized in that, also comprises:
High pressure sprays fog equipment, described high pressure sprays fog equipment is arranged on the air inlet place of described outdoor wind passage, and described high pressure sprays fog equipment is for spraying high-pressure water mist to described outdoor wind passage.
6. system as claimed in claim 5, is characterized in that, described controller specifically for:
When the dry-bulb temperature of described outdoor air is greater than or equal to described the first predetermined threshold value, and the wet-bulb temperature of described outdoor air is during lower than described the second predetermined threshold value, and described controller is controlled described high pressure sprays fog equipment and opened.
7. the system as claimed in claim 1, is characterized in that, described the first blower fan makes the flow direction of hot-air in the flow direction of outdoor air in described outdoor wind passage and described return air channel contrary.
8. the system as claimed in claim 1, is characterized in that, described heat-conducting plate be shaped as folding shape or zigzag.
9. the system as claimed in claim 1, is characterized in that:
Described outdoor wind passage is formed on the top of described machine room.
10. the system as claimed in claim 1, is characterized in that:
Described outdoor wind passage is formed on the side of described machine room.
11. systems as claimed in claim 10, is characterized in that, also comprise:
Heat exchanger, described heat exchanger is arranged on the side of described machine room, and described heat exchanger dispels the heat for the hot-air that described return air channel is flowed out.
12. systems as claimed in claim 10, is characterized in that, also comprise:
The second blower fan, described the second assembling is at the air outlet place of described return air channel, and described the second blower fan is for being introduced into described heat exchanger by the hot-air of described return air channel.
13. systems as claimed in claim 10, is characterized in that, also comprise:
The 3rd blower fan, described the 3rd assembling is above described heat exchanger, and described the 3rd blower fan is for discharging the outdoor air of described heat exchanger periphery.
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| CN104238689A (en) * | 2014-09-12 | 2014-12-24 | 北京百度网讯科技有限公司 | Data center and hot air exhaust method of data center |
| CN104456768A (en) * | 2014-09-26 | 2015-03-25 | 北京百度网讯科技有限公司 | System and method capable of adjusting temperature |
| CN105066303A (en) * | 2015-08-21 | 2015-11-18 | 北京百度网讯科技有限公司 | Data center computer room |
| CN105338793A (en) * | 2015-11-17 | 2016-02-17 | 深圳市易信科技有限公司 | Container-type data center energy-saving and heat dissipation method |
| CN105805866A (en) * | 2014-12-31 | 2016-07-27 | 中国移动通信集团公司 | Air cooling system for machine room |
| CN105804444A (en) * | 2016-01-29 | 2016-07-27 | 浙江电联通信机房工程技术有限公司 | Circulating heat conduction type energy-saving and environment-friendly machine room |
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| CN111076473A (en) * | 2020-01-03 | 2020-04-28 | 珠海格力电器股份有限公司 | Air duct structure of evaporator and refrigerator |
| CN111511174A (en) * | 2020-05-19 | 2020-08-07 | 张礼 | Method for establishing airflow structure with partition effect in communication or data center machine room |
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