CN101737880A - Method for balancing temperature of outdoor machine room and structure of outdoor machine room - Google Patents
Method for balancing temperature of outdoor machine room and structure of outdoor machine room Download PDFInfo
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- CN101737880A CN101737880A CN200810203427A CN200810203427A CN101737880A CN 101737880 A CN101737880 A CN 101737880A CN 200810203427 A CN200810203427 A CN 200810203427A CN 200810203427 A CN200810203427 A CN 200810203427A CN 101737880 A CN101737880 A CN 101737880A
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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
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/20554—Forced ventilation of a gaseous coolant
- H05K7/2059—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
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- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a method for balancing the temperature of an outdoor machine room and a structure of the outdoor machine room. The method for balancing the temperature comprises the modes of hot wind exchange and ventilation. The hot wind exchange mode consists of the following steps: assembling the phase-change materials in a cabinet of the outdoor machine room, and selecting the phase-change materials suitable for the temperature required to run an electronic device in the outdoor machine room. When the temperature of the environment is lower, the phase-change materials and the electronic device release heat to the environment; when the temperature of the environment is higher, the phase-change materials absorb the heat released by the electronic device to inhibit the temperature in the cabinet. The ventilation mode is to connect the cabinet provided with the phase-change materials to an air flue for forming a ventilation system. The method for balancing the temperature of the outdoor machine room and the structure have the advantages that the outdoor machine room has excellent heat capacity by adopting a passive refrigeration mode, the frequent starting of an air-conditioner is avoided by utilizing the natural cold source and the cold-storage capacities of the phase-change materials, the single running time of the air-conditioner is effectively prolonged, and dust prevention effect is achieved by utilizing the phase-change materials to separate the outer and inner air flues of the cabinet.
Description
Technical field
The present invention relates to heat dissipation technology, particularly phase-change material is applied to the method for balancing temperature and the structure thereof of outdoor communication equipment.
Background technology
Communication base station is the important component part of communication system, and ambient parameters such as its inner humiture and cleanliness factor not only directly affect the reliability service and the service life of communication equipment, more is related to the smooth and easy and safety of communication.The base station area is generally about 10～30m2, but internal heat dissipating strong (generally at 600-2500W) belongs to annual uninterrupted heavy-duty service, is annually continuing to consume a large amount of energy, and has formed huge electricity charge spending.Therefore, the air-conditioning temperature-reducing of communication base station, air cleaning and operational management thereof are one of focus of maintenance department all the time.
The power save mode of communications equipment room has a variety of now, as changing wind mode, independent heat exchange mode, air-conditioner temperature control mode, ethylene glycol mode etc. separately, but these modes all have certain defective, little as changing the wind mode separately with the accommodation of independent heat exchange mode, it can not be applied to high temperature humidity, machine room internal-external temperature difference circlet border, and it does not have dust reduction capability; Though the mode accommodation by air-conditioner temperature control is big and can prevent dust, need long-play air-conditioning, energy-saving effect is very little; Though can overcome the shortcoming of air-conditioner temperature control mode by the energy-conservation mode of ethylene glycol, its energy-saving effect is still undesirable; Thereby aforesaid way all can not satisfy the requirement of communication equipment room energy-conserving or operation fully.
Summary of the invention
The method for balancing temperature and the structure thereof that the purpose of this invention is to provide a kind of outdoor machine room utilize phase-change material in order to realize the temperature balance control to outdoor machine room, reach the purpose of temperature balance; Simultaneously by phase-change material and air-conditioning are joined and, use the air channel to connect, or phase-change material cooperated with ventilating system, use the air channel to connect, thereby the realization ventilation.
Phase-change material (Phase Change Material, abbreviation PCM) general reference has the material of a large amount of latent heat of meltings, this material can be used for passive storage and release energy when its typolysis temperature, ice is the phase-change material of common existence, can absorb or discharge lot of energy by isothermal when the solution temperature zero degrees celsius.Because phase-change material can be used as energy accumulator, utilizes this characteristic the energy storage of many forms so just can be able to be played energy-conservation effect.In addition, phase-change material is inorganic matter and mixtures of thickening agents, and it can not cause adverse effect to surrounding environment.
For solving the problems of the technologies described above, the method for balancing temperature of outdoor machine room of the present invention comprises heat exchange mode and changes the wind mode, described heat exchange mode is that phase-change material is installed in the rack in the outdoor machine room, selection is suitable for the phase-change material that the interior electronic equipment of described outdoor machine room moves desired temperature, when environment temperature is low, described phase-change material and electronic equipment release heat are in environment, when environment temperature is higher, described phase-change material absorbs the electronic equipment release heat, in order to suppress the rack temperature inside; The described wind mode of changing is that the rack that will be equiped with phase-change material connects the air channel in order to form ventilating system.
As a preferred embodiment of the present invention, it is below 32 degrees centigrade the time that described suitable outdoor machine room internal electronic equipment moves desired temperature, can select the phase-change material that undergoes phase transition in 5～35 degrees centigrade of scopes.
As a preferred embodiment of the present invention, the quality of described phase-change material is directly proportional with the latent heat of volume, environment temperature, solar radiation and the described phase-change material of the operate power of described electronic equipment, described outdoor machine room.
As a preferred embodiment of the present invention, described phase-change material is packaged in the housing, to adapt to the phase-change material of different shape.
As a preferred embodiment of the present invention, the rack of the housing of described encapsulation phase-change material in described outdoor machine room can adopt framework formula installation method, promptly can the single or multiple lift form be arranged in the top and/or the sidepiece of described rack.
As a preferred embodiment of the present invention, the housing of described encapsulation phase-change material can be arranged in the top and/or the sidepiece of described rack with respect to vertical plane in 0～40 degree scope.
As a preferred embodiment of the present invention, described outdoor machine room is designed to double-decker, the interlayer that it produced can be used to fill phase-change material.
As a preferred embodiment of the present invention, the described wind mode of changing is to be equipped with an air-conditioning, and by an air channel described rack is connected with described air-conditioning, wherein, the air outlet of described air-conditioning be connected with the air inlet of described rack by described air channel.
As a preferred embodiment of the present invention, the described wind mode of changing is to introduce external source by the air channel that is connected with rack in the described outdoor machine room, thereby form ventilating system in order to realize ventilation, wherein, make that by described phase-change material the inside and outside air channel of described rack is isolated.
The temperature balanced structure of outdoor machine room of the present invention as a preferred embodiment of the present invention, comprises some communication equipments, also comprises an air-conditioning; At least one air channel, this air channel links to each other with the air outlet that is positioned at described air-conditioning top; And at least one cold-storage rack, described air channel also links to each other with the air inlet of the air-conditioning cold air that is positioned at described cold-storage rack top simultaneously, and the top of described cold-storage rack also is provided with the air inlet of hot gas in the machine room, and its underpart is provided with an air outlet.
The temperature balanced structure of outdoor machine room of the present invention, as a preferred embodiment of the present invention, comprise some communication equipments, also comprise at least one cold-storage rack, it comprises the air inlet of the outdoor cold air that is positioned at described cold-storage rack top, the air inlet of machine room hot gas and the air outlet that is positioned at described cold-storage rack bottom; The air inlet of the outdoor cold air of described cold-storage rack links to each other with the outside by an air channel, and the inside of described cold-storage rack is equiped with described phase-change material and makes that described air outlet and air inlet are isolated.
As a preferred embodiment of the present invention, described cold-storage rack also comprises the inner loop blower fan that is positioned at described air inlet bottom, and the rack main body with accommodation space, the frame plate that is provided with single or multiple lift in the inside of described accommodation space is in order to lay phase-change material.
As a preferred embodiment of the present invention, described phase-change material is packaged in the board-like housing, and the described board-like housing that phase-change material is housed is arranged on the described frame plate in 0～40 degree scope with respect to vertical plane.
As a preferred embodiment of the present invention, described board-like housing can be arranged on the described frame plate with respect to vertical plane 15 degree that tilt, in order to form the air channel.
As a preferred embodiment of the present invention, described board-like housing can be arranged on the described frame plate with respect to vertical plane 15 degree that tilt, in order to form the air channel.
As a preferred embodiment of the present invention, described machine room adopts die Welding Structure skeleton, the guard board structure that the sandwich foamed plastic plate of two-sided plastic-aluminum is formed.
As a preferred embodiment of the present invention, described phase-change material is housed in described backplate.
Technique effect of the present invention is, utilizes the mode of phase-change material by passive refrigeration, makes outdoor machine room have good hot property, prolongs outdoor cabinet internal electronic equipment service life simultaneously and improves its reliability of operation.
Another technique effect of the present invention is, makes full use of the low-temperature receiver of nature and utilizes the cold-storage performance of phase-change material to avoid the frequent starting of air-conditioning, and effectively prolonged the single running time of air-conditioning, thereby produced desirable energy-saving effect.
Another technique effect of the present invention is, utilizes phase-change material to isolate the inside and outside air channel of rack, has played the dustproof effect.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and better embodiment.
Fig. 1 is the operation schematic diagram of the first embodiment of the present invention;
Fig. 1 a is the schematic diagram of the first embodiment of the present invention under running state of air conditioner;
Fig. 1 b is the schematic diagram of the first embodiment of the present invention under the air-conditioning halted state;
Fig. 2 is the structural representation of the cold-storage rack of the first embodiment of the present invention;
Fig. 3 is the operation schematic diagram of the second embodiment of the present invention;
Fig. 3 a is the schematic diagram when the high operation of environment temperature of the second embodiment of the present invention;
Fig. 3 b is the schematic diagram when the low operation of environment temperature of the second embodiment of the present invention; And
Fig. 4 is the structural representation of the cold-storage rack of the second embodiment of the present invention.
The specific embodiment
The method for balancing temperature of outdoor machine room of the present invention comprises heat exchange mode and changes the wind mode, described heat exchange mode is that phase-change material is installed in the rack in the outdoor machine room, selection is suitable for the phase-change material that the interior electronic equipment of described outdoor machine room moves desired temperature, when environment temperature is low, described phase-change material and electronic equipment release heat are in environment, when environment temperature was higher, described phase-change material absorbed the electronic equipment release heat, in order to suppress the rack temperature inside; The described wind mode of changing is that the rack that will be equiped with phase-change material connects the air channel in order to form ventilating system.
As follows to the selection of described phase-change material in present embodiment:
1. the type selecting of phase-change material: consider because the state of matter variation can cause the variation of environmental pressure, thus select to change relatively the phase-change material of less solid-liquid conversion, so that enforcement.
2. the fusing point of phase-change material is selected: according to environment temperature, select the phase-change material that undergoes phase transition in 5～35 degrees centigrade of scopes.Specifically at day and night temperature greater than 14 degrees centigrade; The mean temperature round the clock of environment is at 29 degrees centigrade; The sands are running out that is higher than 29 degrees centigrade every day was in 12 hours; Maximum temperature can still under the situation that can not exist in continuous three days, can be selected the phase-change material that undergoes phase transition greater than 38 degrees centigrade in 27～29 degrees centigrade of scopes.
3. the quality of phase-change material is selected: the operate power of the quality of phase-change material and its latent heat, environment temperature, solar radiation, electronic equipment, the positive correlations such as volume of rack can calculate by prior art.But should notice that phase-change material has very big latent heat in its melting point, when specifically being liquid state 80 times, when solid-state 130 times, and the average temperature value of environment for use should be as far as possible be close with the fusing point of phase-change material.
Described phase-change material can be packaged in the housing, and the loss to be suitable for the holding phase-change material of solid-liquid conversion modalities and can to avoid phase-change material is arranged in described housing in the accommodation space of described outdoor cabinet by the single or multiple lift form simultaneously.Consider cross-ventilated factor, for making the phase-change material high efficiency and heat radiation, the described housing that is packaged with phase-change material is arranged at the inside of outdoor cabinet accommodation space.The PCM plate vertically is given in the accommodation space of described rack, and the inclination that each PCM plate keeps certain clearance successively and keeps 15 degree with respect to vertical plane so just can form the air channel, in order to distribute heat.
Fig. 1 is the operation schematic diagram of the first embodiment of the present invention, and as shown in Figure 1, the outdoor machine room of present embodiment comprises some communication equipments 11, also comprises an air-conditioning 13; One air channel 12, this air channel 12 links to each other with the air outlet 131 that is positioned at described air-conditioning 13 tops; And a cold-storage rack 10, described air channel 131 also links to each other with the air inlet 101 of the air-conditioning cold air that is positioned at described cold-storage rack 10 tops simultaneously, and the top of described cold-storage rack 10 also is provided with the air inlet 102 of hot gas in the machine room, and its underpart is provided with an air outlet 105.
Fig. 2 is the structural representation of the cold-storage rack 10 of the first embodiment of the present invention, as shown in Figure 2, described cold-storage rack 10 also comprises the inner loop blower fan 103 that is positioned at described air inlet 101,102 bottoms, and the rack main body with accommodation space, the frame plate 104 that is provided with single or multiple lift in the inside of described accommodation space is in order to lay phase-change material.
Please when air-conditioning 13 operations, close the air inlet 102 of the interior hot gas of machine room on cold-storage rack 10 tops simultaneously in conjunction with Fig. 1 a and Fig. 1 b, give cold-storage rack 10 cold-storages earlier from the cold wind of air-conditioning 13, remaining cold is lowered the temperature to machine room; When the cold of cold-storage rack holds when full, promptly close air-conditioning 13, open the air inlet 102 of hot gas in the machine room on cold-storage rack 10 tops, use cold-storage rack 10 to lower the temperature to machine room this moment.That is to say, when environment temperature is low (at night), make the air-conditioning efficient operation, give the abundant cold-storage of cold-storage rack simultaneously; When (daytime), close external heat-exchange fan when environment temperature is high, utilizes cross-ventilation, the PCM plate absorbs the heat that communication equipment discharges, and is about to the cold energy that phase-change material stores and discharges, and reaches the purpose of heat absorption.By the use of PCM, air-conditioning (period that refrigerating efficiency is the highest) when environment temperature is low is fully freezed; Prolonged the running time of the single of air-conditioning, made air-conditioning fully to freeze for machine room and PCM, improved the refrigerating efficiency of whole equipment room, reduced the electric quantity consumption of air-conditioning, realized purpose of energy saving in situation efficiently.
Fig. 3 is the operation schematic diagram of the second embodiment of the present invention, as shown in Figure 3, the machine room of present embodiment comprises some communication equipments 21, also comprise a cold-storage rack 20, it comprises the air inlet 201 of the outdoor cold air that is positioned at described cold-storage rack 20 tops, the air inlet 202 of machine room hot gas and the air outlet 205 that is positioned at described cold-storage rack bottom; The air inlet 201 of the outdoor cold air of described cold-storage rack links to each other with the outside by an air channel 22, and the inside of described cold-storage rack 20 is equiped with described phase-change material and makes that described air outlet 205 and described air inlet 201,202 are isolated.
Fig. 4 is the structural representation of the cold-storage rack 20 of the second embodiment of the present invention, as shown in Figure 4, described cold-storage rack 20 also comprises the inner loop blower fan 203 that is positioned at described air inlet 201,202 bottoms, and the rack main body with accommodation space, the frame plate 204 that is provided with single or multiple lift in the inside of described accommodation space is in order to lay phase-change material.
Please be simultaneously in conjunction with Fig. 3 a and Fig. 3 b, when at the bottom of the environment temperature (at night), at first heat and the phase-change material exchange that communication equipment 21 is discharged, conduct cold air by the heat of PCM then to the outside, be that the PCM plate is in the heat that absorbs machine room inside, also releasing energy, for the absorption energy of high temperature is got ready; When (daytime), close external heat-exchange fan when environment temperature is high, utilizes cross-ventilation, PCM plate 204 absorbs the heat that communication equipments discharge, and is about to the cold energy that phase-change material stores and discharges, and reaches the purpose of heat absorption.The inside and outside air channel of heat exchange type phase transformation rack 20 isolates fully with phase-change material, has reached the dustproof purpose.The heat that communication equipment produces by with the exchange of phase-change material, the machine room temperature inside is reached meets in the temperature range of GB regulation.
Also can select power ratio little air-conditioning for use, when the environment temperature continuous high temperature, the deficiency of storage power when replenishing phase-change material low temperature.Only consume seldom electric energy (fan power consumption) in this process, shortened the running time of air-conditioning, thereby saved the power consumption of a large amount of refrigerating and air-conditionings.When environment temperature is high, utilize the phase-change material stored latent heat to give the cooling of the equipment in the machine room, avoid the operation of air-conditioning as far as possible, realized energy-conservation equally.
Below preferred embodiment of the present invention is specified, but the present invention is not limited to described embodiment, those of ordinary skill in the art also can make all modification that is equal to or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (10)
1. the method for balancing temperature of an outdoor machine room, comprise heat exchange mode and change the wind mode, it is characterized in that, described heat exchange mode is that phase-change material is installed in the rack in the outdoor machine room, selection is suitable for the phase-change material that the interior electronic equipment of described outdoor machine room moves desired temperature, when environment temperature is low, described phase-change material and electronic equipment release heat are in environment, when environment temperature is higher, described phase-change material absorbs the electronic equipment release heat, in order to suppress the rack temperature inside; The described wind mode of changing is that the rack that will be equiped with phase-change material connects the air channel in order to form ventilating system.
2. the method for balancing temperature of outdoor machine room as claimed in claim 1 is characterized in that: it is below 32 degrees centigrade the time that described suitable outdoor machine room internal electronic equipment moves desired temperature, selects the phase-change material that undergoes phase transition in 5～35 degrees centigrade of scopes.
3. the method for balancing temperature of outdoor machine room as claimed in claim 1 is characterized in that: described phase-change material is packaged in the housing, to adapt to the phase-change material of different shape.
4. the method for balancing temperature of outdoor machine room as claimed in claim 3, it is characterized in that: the described wind mode of changing is to be equipped with an air-conditioning, and by an air channel described rack is connected with described air-conditioning, wherein, the air outlet of described air-conditioning be connected with the air inlet of described rack by described air channel.
5. the temperature balanced structure of outdoor machine room as claimed in claim 4 comprises some communication equipments, it is characterized in that: also comprise an air-conditioning; At least one air channel, this air channel links to each other with the air outlet that is positioned at described air-conditioning top; And at least one cold-storage rack, described air channel also links to each other with the air inlet of the air-conditioning cold air that is positioned at described cold-storage rack top simultaneously, and the top of described cold-storage rack also is provided with the air inlet of hot gas in the machine room, and its underpart is provided with an air outlet.
6. the method for balancing temperature of outdoor machine room as claimed in claim 3, it is characterized in that: the described wind mode of changing is to introduce external source by the air channel that is connected with rack in the described outdoor machine room, thereby form ventilating system in order to realize ventilation, wherein, make that by described phase-change material the inside and outside air channel of described rack is isolated.
7. the temperature balanced structure of outdoor machine room as claimed in claim 6, comprise some communication equipments, it is characterized in that: also comprise at least one cold-storage rack, it comprises the air inlet of the outdoor cold air that is positioned at described cold-storage rack top, the air inlet of machine room hot gas and the air outlet that is positioned at described cold-storage rack bottom; The air inlet of the outdoor cold air of described cold-storage rack links to each other with the outside by an air channel, and the inside of described cold-storage rack is equiped with described phase-change material and makes that described air outlet and air inlet are isolated.
8. as the temperature balanced structure of claim 5 or 7 described outdoor machine rooms, it is characterized in that: described cold-storage rack also comprises the inner loop blower fan that is positioned at described air inlet bottom, and the rack main body with accommodation space, the frame plate that is provided with single or multiple lift in the inside of described accommodation space is in order to lay phase-change material.
9. the temperature balanced structure of outdoor machine room as claimed in claim 8, it is characterized in that: described phase-change material is packaged in the board-like housing, and the described board-like housing that phase-change material is housed is arranged on the described frame plate in 0～40 degree scope with respect to vertical plane.
10. the temperature balanced structure of outdoor machine room as claimed in claim 9 is characterized in that: described machine room adopts die Welding Structure skeleton, and the guard board structure that the sandwich foamed plastic plate of two-sided plastic-aluminum is formed is equipped with described phase-change material in described backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810203427A CN101737880A (en) | 2008-11-27 | 2008-11-27 | Method for balancing temperature of outdoor machine room and structure of outdoor machine room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810203427A CN101737880A (en) | 2008-11-27 | 2008-11-27 | Method for balancing temperature of outdoor machine room and structure of outdoor machine room |
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| CN101737880A true CN101737880A (en) | 2010-06-16 |
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| CN200810203427A Pending CN101737880A (en) | 2008-11-27 | 2008-11-27 | Method for balancing temperature of outdoor machine room and structure of outdoor machine room |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375511A (en) * | 2010-08-19 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Container data center |
| CN102607308A (en) * | 2011-03-02 | 2012-07-25 | Kdpcm株式会社 | Multi cooling type phase-change material thermal storage system |
| CN103347376A (en) * | 2013-06-29 | 2013-10-09 | 北京无线电测量研究所 | Outdoor radar machine cabinet |
| CN105841298A (en) * | 2016-03-30 | 2016-08-10 | 广东美的制冷设备有限公司 | Control method used for air conditioner and air conditioner |
| DE102017113446A1 (en) | 2016-06-17 | 2017-12-21 | Heliocentris Industry GmbH | Grid-independent power supply system for a telecom base station or residential building, supplementary module and operating procedure |
| CN111373203A (en) * | 2017-11-30 | 2020-07-03 | 法马通有限公司 | Ventilation air conditioning system with passive emergency cooling mode |
| CN112448276A (en) * | 2020-09-09 | 2021-03-05 | 北京潞电电气设备有限公司 | Self-circulation type shell suitable for low-temperature environment |
| CN113056181A (en) * | 2021-04-16 | 2021-06-29 | 上海交通大学 | Air-cooled direct-blowing modular data center emergency cooling tail end system |
| CN113453473A (en) * | 2021-07-08 | 2021-09-28 | 深圳市科信通信技术股份有限公司 | Communication cabinet supporting 700MHz and DRAN |
| WO2023067034A1 (en) * | 2021-10-22 | 2023-04-27 | Energy Cool Aps | Temperature-controlled enclosure for containing temperature-sensitive electronic and/or telecommunications equipment |
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- 2008-11-27 CN CN200810203427A patent/CN101737880A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375511A (en) * | 2010-08-19 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Container data center |
| CN102607308A (en) * | 2011-03-02 | 2012-07-25 | Kdpcm株式会社 | Multi cooling type phase-change material thermal storage system |
| CN102607308B (en) * | 2011-03-02 | 2014-10-29 | Kdpcm株式会社 | Multi cooling type phase-change material thermal storage system |
| CN103347376A (en) * | 2013-06-29 | 2013-10-09 | 北京无线电测量研究所 | Outdoor radar machine cabinet |
| CN105841298A (en) * | 2016-03-30 | 2016-08-10 | 广东美的制冷设备有限公司 | Control method used for air conditioner and air conditioner |
| DE102017113446A1 (en) | 2016-06-17 | 2017-12-21 | Heliocentris Industry GmbH | Grid-independent power supply system for a telecom base station or residential building, supplementary module and operating procedure |
| CN111373203A (en) * | 2017-11-30 | 2020-07-03 | 法马通有限公司 | Ventilation air conditioning system with passive emergency cooling mode |
| US11678459B2 (en) | 2017-11-30 | 2023-06-13 | Framatome Gmbh | Ventilation and air conditioning system with a passive emergency cooling mode |
| CN112448276A (en) * | 2020-09-09 | 2021-03-05 | 北京潞电电气设备有限公司 | Self-circulation type shell suitable for low-temperature environment |
| CN113056181A (en) * | 2021-04-16 | 2021-06-29 | 上海交通大学 | Air-cooled direct-blowing modular data center emergency cooling tail end system |
| CN113453473A (en) * | 2021-07-08 | 2021-09-28 | 深圳市科信通信技术股份有限公司 | Communication cabinet supporting 700MHz and DRAN |
| CN113453473B (en) * | 2021-07-08 | 2023-08-25 | 深圳市科信通信技术股份有限公司 | Communication cabinet supporting 700MHz and DRAN |
| WO2023067034A1 (en) * | 2021-10-22 | 2023-04-27 | Energy Cool Aps | Temperature-controlled enclosure for containing temperature-sensitive electronic and/or telecommunications equipment |
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Open date: 20100616 |