WO2011145685A1 - External-air introducing data center - Google Patents
External-air introducing data center Download PDFInfo
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- WO2011145685A1 WO2011145685A1 PCT/JP2011/061533 JP2011061533W WO2011145685A1 WO 2011145685 A1 WO2011145685 A1 WO 2011145685A1 JP 2011061533 W JP2011061533 W JP 2011061533W WO 2011145685 A1 WO2011145685 A1 WO 2011145685A1
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- outside air
- machine room
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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
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20745—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20345—Sprayers; Atomizers
Definitions
- the present invention relates to an outside air introduction type data center, and more particularly to an outside air introduction type data center that can save energy required for cooling.
- Patent Document 1 discloses a switch cabinet that stabilizes the humidity of the high-temperature exhaust gas by spraying the condensed water obtained in the heat exchanging part into the high-temperature exhaust gas, thereby enabling heat dissipation in the sealed enclosure. Has been.
- Patent Documents 2 and 3 cooling air-conditioning that is unlikely to generate static electricity can be realized with energy saving by mixing cold outdoor air that has been introduced and room exhaust and supplying low-temperature air with high humidity to the room. It is disclosed.
- the humidity of the outside air must be considered in addition to the temperature of the outside air to be introduced. That is, it is necessary to consider a data center configuration capable of humidity control and achieving energy saving.
- Patent Document 1 by condensing the condensed water obtained in the heat exchanging part during high-temperature exhaust, the humidity of the high-temperature exhaust can be stabilized and heat can be dissipated in the sealed casing.
- the switch cabinet is shown. However, this technique is limited to cases where the switch cabinet is sealed. In addition to energy savings by introducing outside air into the switch cabinet, there are concerns about the influence of the outside air temperature fluctuation on the humidification adjustment function, but no consideration is given to these problems.
- Patent Document 2 also shows that energy saving can be realized by stopping the operation of the cooling tower when the enthalpy of the indoor exhaust is smaller than the enthalpy of the outside air.
- humidity control during the introduction of outside air, and there is a concern about the adverse effects of static electricity on the equipment in the clean room.
- Patent Document 3 shows that the outside air can be directly introduced to improve the cooling performance and energy saving effect of the computer room.
- no consideration has been given to humidity control during the introduction of outside air, and there is a concern about the adverse effects of static electricity on the equipment in the clean room.
- the present invention has been made in view of these problems, and provides a cooling technology for IT equipment that can perform humidity control at the time of introduction of outside air with energy saving.
- the present invention employs the following means in order to solve the above problems.
- An air conditioner room that includes an outside air introduction blower that introduces outside air, an air conditioner, adjusts the temperature of the introduced outside air, and supplies the temperature-adjusted air to a machine room that houses IT equipment; and An air blower for exhausting air heated by IT equipment, and a water spraying device for spraying water into the air heated in the machine room and supplying the air sprayed with water to the air conditioning room, the air conditioning The machine adjusts the temperature of the mixed air composed of the air sprayed with the water and the air blown by the blower for introducing outside air and supplies the mixed air to the machine room.
- the temperature control at the time of introducing the outside air of the data center equipped with the IT device can be executed with energy saving.
- FIG. 1 is a diagram showing an example of a wet air diagram.
- reference numeral 2 denotes a recommended range of temperature and humidity environment for server intake air by ASHRAE (American Society for Heating, Refrigerating and Air Conditioning).
- the recommended conditions are a dry bulb temperature of 18 to 27 ° C., a dew point temperature of 5.5 to 15 ° C., and a relative humidity of 60% or less.
- This area is an environment range in which the generation of static electricity is prevented and the server can be stably operated without causing the server to fail or break.
- the temperature and humidity 3 of the introduced outside air is 5 ° C. and 40%.
- the intake air temperature and humidity 7a of the server representing IT equipment has a minimum temperature of 18 ° C. and a maximum humidity of 60% under the above recommended conditions.
- the temperature and humidity 4a of the exhaust from the server is 33 ° C. and 25%.
- the exhaust temperature varies depending on the heat generation amount and air volume of the server, but the temperature rise in intake and exhaust is generally designed at about 15K.
- the room where the IT equipment in the data center is installed is not provided with a humidifier because of fear of leakage due to water leakage. Therefore, the absolute humidity of the exhaust from the server is the same value as the absolute humidity of the intake air of the server.
- the temperature / humidity 5a of the humid air after water spraying is performed on the exhaust from the server, and (a) the temperature / humidity 3 (5 ° C., 40%) of the introduced outside air. Control is performed so that an extension of a straight line passing through two points of the intake temperature / humidity 7a (18 ° C., 60%) of the server and an isoenthalpy line of (b) exhaust from the server (temperature / humidity 4a).
- the flow distribution of the humid air (temperature / humidity 5a) and the introduced outside air (temperature / humidity 3) are proportionally distributed so that the absolute humidity of the intake air (temperature / humidity 7a) of the server becomes equal.
- the absolute humidity of the humid air (temperature and humidity 5a), the outside air to be introduced (temperature and humidity 3), and the intake air (temperature and humidity 7a) of the server are 0.0107, 0.0022, and 0.0076 kg / kg, respectively. .
- the humid air (temperature and humidity 5a) has a flow rate ratio of 64%
- the outside air to be introduced (temperature and humidity 3) has a flow rate ratio of 36%.
- the intake temperature / humidity 7a of the server is set to 18 ° C. and 60%.
- the flow rates of the humid air (temperature / humidity 5a) and the introduced outside air (temperature / humidity 3) can be estimated in the same manner.
- the temperature and humidity 3 of the introduced outside air is 5 ° C. and 40% as in the case of FIG.
- the intake air temperature and humidity 7b of a server representing an IT device has a minimum temperature of 18 ° C. and a minimum humidity of 45% under recommended conditions.
- the temperature and humidity 4b of the exhaust from the server is 33 ° C. and 25%.
- Fig. 3 shows a side view of a computer room such as a data center in which many racks equipped with IT equipment are installed.
- the data center 8 includes a machine room 9 in which an IT device 11 such as a server is mounted, and an air conditioner room 10 in which an air conditioner 12 is installed.
- the air conditioner room 12 is provided with a blower 13 for introducing outside air, and an exhaust blower 14 is provided on the outlet side of the machine room.
- a water spray device 15 is attached to the air conditioner room 10 side of the boundary surface between the machine room 9 and the air conditioner room 10.
- the air that has flowed in flows into the rack air intake surface on which the IT equipment 11 is mounted through lattice holes (gratings) for air inflow provided on the floor surface of the machine room 9 (not shown).
- the air flowing into the rack intake surface passes through the IT device 11 and exchanges heat, and then becomes hot air and flows into the ceiling 18 of the machine room 9.
- the exhaust blower 14 discharges air having the same flow rate as that of the introduced outside air to the outside of the machine room 9.
- the high-temperature air that is not discharged outside the machine room 9 passes through the water spray device 15 provided on the air conditioner room 10 side of the boundary surface between the machine room 9 and the air conditioner room 10 and flows into the air conditioner room 10.
- the water spray device 15 sprays water on high-temperature air and flows it into the air conditioner room 10 as moist air.
- the water spraying device 15 has a duct shape, and it is desirable to provide the entire area in the depth direction of the machine room 9 and the air conditioner room 10 in order to increase the humidity.
- the air 16 sprayed with water is mixed with the air 16 introduced from the outside air in the air conditioner room 10, sucked into the air inlet of the air conditioner 12, and flows out from the outlet of the air conditioner 10 as described above. To do.
- the air conditioner 12 only needs to function to blow the air 16, and the power of the air conditioner 12 can save energy. Further, when the temperature of the mixed air is lower than the discharge temperature of the air conditioner, the mixed air 16 can flow directly into the under floor 17 of the machine room 9 without going through the air conditioner 12.
- the amount of air 16 introduced from outside air can be adjusted by controlling the outside air introducing blower 13.
- the flow rate of outside air to be introduced is 36% and 45% of the total flow rate.
- the cooling power of the air conditioner 12 is stopped and only the blowing power is operated, or the mixed air 16 without flowing through the air conditioner 12 flows directly into the machine room. Therefore, the power supplied to the air conditioner 12 can be reduced.
- FIG. 4 is a diagram for explaining the second embodiment. Here, it demonstrates centering on a different location from 1st Embodiment (FIG. 3).
- the air 16 that has passed through the exhaust fan 14 is discharged to the outside through a heat exchange condenser 19 disposed on the computer room 8 side of the outer wall 20 of the computer room 8.
- a heat exchange condenser 19 disposed on the computer room 8 side of the outer wall 20 of the computer room 8.
- external cold air and hot exhaust gas exchange heat through the outer wall 20 and the heat exchanging condenser 19, and the hot exhaust gas 16 is cooled. For this reason, water drops adhere to the heat exchanging condenser 19, and the attached water drops are stored in the condensed water receiving tank 21.
- the condensate water receiving tank 21 is connected to the water spraying device 15 via a pump, and the water stored in the condensate water receiving tank 21 is supplied with high temperature from the machine room via the water spraying device 15. Sprayed into the air 16.
- the cooling power of the air conditioner 12 is stopped and only the blasting power is operated, or the mixed air 16 is allowed to flow directly into the machine room without passing through the air conditioner 12. Therefore, the power supplied to the air conditioner 12 can be reduced.
- FIG. 5 is a diagram for explaining the third embodiment. This is an example when the introduced outside air is within the recommended range of the inlet air temperature and humidity environment of the IT device in the second embodiment.
- All of the air introduced by the outside air introduction blower 13 passes through the IT equipment, and the high temperature air is discharged to the outside of the machine room 8 via the exhaust blower 14.
- the cold outside air and the high-temperature exhaust are heat-exchanged via the outer wall 20 and the heat exchange condenser 19, and when the high-temperature exhaust 16 is cooled, water drops adhere to the heat exchange condenser 19, and the attached water drops It is stored in the condensed water receiving tank 21.
- the water in the condensed water receiving tank 21 is supplied to the water spraying device 15 via a pump to operate the water spraying device 15.
- the air volume control of the outside air introduction blower 13, the exhaust blower 14, and the air conditioner 12 is performed, and high-temperature air is supplied to the water spray device 15 (the configuration shown in FIG. 3).
- the water stored in the condensed water receiving tank 21 is transported to the water spray device 15 by a pump.
- FIG. 6 is a diagram for explaining the fourth embodiment.
- the pump for guiding the water in the condensed water receiving tank to the water spray device 15 is omitted, and the reuse (circulation) of water is realized.
- the air 16 that has passed through the IT device 11 and has reached a high temperature passes through the exhaust blower 14 and the heat exchange condenser 19 in the same manner as in the examples of FIGS. 4 and 5. It is divided into air 16 for heat exchange and air 16 returning to the machine room 9.
- the condensed water receiving tank 21 is arranged to extend to a region where the air 16 that returns to the machine room 9 flows.
- a porous plate 22 is provided in an extended region of the condensed water receiving tank 21.
- the porous plate 22 has a function of easily absorbing water, and is composed of, for example, a sponge, a cloth, a metal wire mesh, or the like.
- the water stored in the condensed water receiving tank 21 is pumped up by the capillary action of the porous plate 22, and the hot air 16 flows there, so that the hot air 16 can contain moisture.
- the hot humid air containing water mixes with the air introduced from the outside air under the floor 17 of the machine room 9 and flows into the intake port of the IT device 11. Note that the temperature and humidity of the mixed air are within the recommended environmental range as described above. Thereby, the system which circulates water can be comprised, without driving a pump. Thereby, the effect of energy saving can further be improved.
- the humidity of the data center can be controlled with energy saving.
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Abstract
Provided is a technique for cooling IT equipment wherein it is possible to control the humidity when introducing external air while conserving energy. Disclosed is an external-air introducing data center provided with: an external-air introducing blower (13) for introducing external air; an air conditioning chamber (10) which is equipped with an air conditioner, adjusts the temperature of the introduced external air, and supplies the temperature adjusted air to a machine chamber which houses IT equipment; an exhaust blower (14) which emits the air heated by means of the IT equipment in the machine chamber; and a water spraying device (15) which sprays water to the air heated in the machine chamber and which supplies the air sprayed with water to the air conditioning chamber. The air conditioning chamber adjusts the temperature of the combined air of the air which was sprayed with water and the air which was blown from the external-air introducing blower and supplies said combined air to the machine chamber.
Description
本発明は、外気導入式データセンタに係り、特に冷却に要するエネルギーの省エネ化を図ることのできる外気導入式データセンタに関する。
The present invention relates to an outside air introduction type data center, and more particularly to an outside air introduction type data center that can save energy required for cooling.
IT機器を搭載したラックを多数設置したデータセンタ(あるいは計算機室)では、IT機器から発する熱を空調機により吸熱し、冷却している。しかし、IT機器の高性能化、高密度化により消費電力は増加し、空調機の消費電力は増大してきた。このため、空調電力の低減が課題となっている。
In a data center (or computer room) where many racks equipped with IT equipment are installed, the heat generated from the IT equipment is absorbed by the air conditioner and cooled. However, power consumption has increased due to higher performance and higher density of IT equipment, and power consumption of air conditioners has increased. For this reason, reduction of air-conditioning power has been a problem.
空調機電力の低減のためは、外気導入を行い、空調機の稼働時間を少なくして省電力化をする方式が導入されつつある。しかし、冬場の外気は、温度が低く湿度も低く、サーバを始めとするIT機器に対する環境湿度を満たさない。このため、そのまま外気を導入した場合には、静電気が発生し、IT機器に悪影響を与えることがある。
In order to reduce the power consumption of air conditioners, a system that introduces outside air and saves energy by reducing the operating time of air conditioners is being introduced. However, the outdoor air in winter has low temperature and low humidity, and does not satisfy the environmental humidity for IT equipment such as servers. For this reason, when outside air is introduced as it is, static electricity is generated, which may adversely affect IT equipment.
このため、温度の低い外気を導入したにも関わらず、空調機を稼働させて加熱加湿することが必要となり、空調電力の削減にならない場合がある。
For this reason, it may be necessary to operate the air conditioner to heat and humidify it despite the introduction of low temperature outside air, which may not reduce air conditioning power.
特許文献1には、高温の排気中に、熱交換部で得た凝縮水を噴霧することにより、前記高温の排気の湿度を安定化して、密閉筺体内における放熱を可能としたスイッチキャビネットが示されている。
Patent Document 1 discloses a switch cabinet that stabilizes the humidity of the high-temperature exhaust gas by spraying the condensed water obtained in the heat exchanging part into the high-temperature exhaust gas, thereby enabling heat dissipation in the sealed enclosure. Has been.
また、特許文献2,3には、導入された冷たい外気と室内排気を混合して、湿度の高い低温の空気を室内に供給することにより、静電気の起こりにくい冷却空調を省エネルギーで実現することが開示されている。
In Patent Documents 2 and 3, cooling air-conditioning that is unlikely to generate static electricity can be realized with energy saving by mixing cold outdoor air that has been introduced and room exhaust and supplying low-temperature air with high humidity to the room. It is disclosed.
サーバ、記憶装置、ネットワーク機器等のIT機器を搭載したラックを多数設置したデータセンタにおいては、IT機器で消費される電力のみならず、空調機で消費される電力を削減し、空調機を含むデータセンタ全体の省エネ化が望まれている。
In data centers with many racks equipped with IT equipment such as servers, storage devices, and network equipment, not only the power consumed by IT equipment but also the power consumed by air conditioners is reduced and includes air conditioners. Energy saving of the entire data center is desired.
発熱したIT機器を冷却する際に、従来通りの空調のやり方では大幅な省エネは図ることは不可能であり、例えば、外気温度が低い場合、その外気をデータセンタまたは計算機室に直接、または間接的に供給する必要がある。
When cooling heated IT equipment, it is impossible to achieve significant energy savings by conventional air conditioning. For example, when the outside air temperature is low, the outside air is directly or indirectly sent to the data center or computer room. Need to be supplied.
しかし、外気導入の際には、導入する外気の温度のほかに外気の湿度も考慮しなければならない。すなわち、湿度制御が可能であり、かつ省エネを達成することが可能なデータセンタの構成を考える必要がある。
However, when introducing the outside air, the humidity of the outside air must be considered in addition to the temperature of the outside air to be introduced. That is, it is necessary to consider a data center configuration capable of humidity control and achieving energy saving.
特許文献1には、上述のように、高温の排気中に、熱交換部で得た凝縮水を噴霧することにより、前記高温の排気の湿度を安定化して、密閉筺体内における放熱を可能としたスイッチキャビネットが示されている。しかし、この技術は、スイッチキャビネットが密閉されている場合に限定されている。また、スイッチキャビネットへの外気導入による省エネのほかに、外気温度変動の加湿調整機能に対する影響等が懸念されるが、これらの問題に関しては何ら配慮されていない。
In Patent Document 1, as described above, by condensing the condensed water obtained in the heat exchanging part during high-temperature exhaust, the humidity of the high-temperature exhaust can be stabilized and heat can be dissipated in the sealed casing. The switch cabinet is shown. However, this technique is limited to cases where the switch cabinet is sealed. In addition to energy savings by introducing outside air into the switch cabinet, there are concerns about the influence of the outside air temperature fluctuation on the humidification adjustment function, but no consideration is given to these problems.
特許文献2には、室内排気のエンタルピが外気のエンタルピよりも小さいとき冷却塔を運転を停止することにより省エネを実現できることも示されている。しかし、外気導入時における湿度制御については何ら検討されておらず、クリーンルーム内の機器の静電気による悪影響が懸念される。
Patent Document 2 also shows that energy saving can be realized by stopping the operation of the cooling tower when the enthalpy of the indoor exhaust is smaller than the enthalpy of the outside air. However, no consideration has been given to humidity control during the introduction of outside air, and there is a concern about the adverse effects of static electricity on the equipment in the clean room.
特許文献3には、外気を直接導入し、計算機室の冷却性能と省エネ効果が向上できることが示されている。しかし、外気導入時における湿度制御については何ら検討されておらず、クリーンルーム内の機器の静電気による悪影響が懸念される。
Patent Document 3 shows that the outside air can be directly introduced to improve the cooling performance and energy saving effect of the computer room. However, no consideration has been given to humidity control during the introduction of outside air, and there is a concern about the adverse effects of static electricity on the equipment in the clean room.
本発明は、これらの問題点に鑑みてなされたもので、外気導入時における湿度制御を省エネルギで実行することのできるIT機器の冷却技術を提供するものである。
The present invention has been made in view of these problems, and provides a cooling technology for IT equipment that can perform humidity control at the time of introduction of outside air with energy saving.
本発明は上記課題を解決するため、次のような手段を採用した。
The present invention employs the following means in order to solve the above problems.
外気を導入する外気導入用送風機と、空調機を具備し、導入した外気に温度調整を施し温度調整された空気をIT機器を収納したマシン室に供給する空調機室と、前記マシン室の前記IT機器により加熱された空気を排気する排気用送風機と、前記マシン室で加熱された空気中に水を噴霧し、水が噴霧された空気を空調室に供給する水噴霧装置を備え、前記空調機は、前記水が噴霧された空気と外気導入用送風機により送風された空気からなる混合空気に温度調整を施してマシン室に供給する。
An air conditioner room that includes an outside air introduction blower that introduces outside air, an air conditioner, adjusts the temperature of the introduced outside air, and supplies the temperature-adjusted air to a machine room that houses IT equipment; and An air blower for exhausting air heated by IT equipment, and a water spraying device for spraying water into the air heated in the machine room and supplying the air sprayed with water to the air conditioning room, the air conditioning The machine adjusts the temperature of the mixed air composed of the air sprayed with the water and the air blown by the blower for introducing outside air and supplies the mixed air to the machine room.
本発明は、以上の構成を備えるため、IT機器を搭載したデータセンタの外気導入時における温度制御を省エネルギで実行することができる。
Since the present invention has the above-described configuration, the temperature control at the time of introducing the outside air of the data center equipped with the IT device can be executed with energy saving.
以下、最良の実施形態を添付図面を参照しながら説明する。
Hereinafter, the best embodiment will be described with reference to the accompanying drawings.
図1は、湿り空気線図の一例を示す図である。図1において、2はASHRAE(米国暖房冷凍空調学会)によるサーバ吸気の温湿度環境推奨範囲を示している。図に示されるように、推奨条件は乾球温度18~27℃、露点温度5.5~15℃、相対湿度60%以下である。この領域が静電気の発生を防ぎ、サーバの故障、破損を生じさせないでサーバを安定稼働できる環境範囲である。導入した外気の温湿度3は5℃、40%である。
FIG. 1 is a diagram showing an example of a wet air diagram. In FIG. 1, reference numeral 2 denotes a recommended range of temperature and humidity environment for server intake air by ASHRAE (American Society for Heating, Refrigerating and Air Conditioning). As shown in the figure, the recommended conditions are a dry bulb temperature of 18 to 27 ° C., a dew point temperature of 5.5 to 15 ° C., and a relative humidity of 60% or less. This area is an environment range in which the generation of static electricity is prevented and the server can be stably operated without causing the server to fail or break. The temperature and humidity 3 of the introduced outside air is 5 ° C. and 40%.
また、IT機器を代表するサーバの吸気温湿度7aは上記の推奨条件で最小温度18℃、かつ最大湿度60%である。サーバからの排気の温湿度4aは33℃、25%となる。
In addition, the intake air temperature and humidity 7a of the server representing IT equipment has a minimum temperature of 18 ° C. and a maximum humidity of 60% under the above recommended conditions. The temperature and humidity 4a of the exhaust from the server is 33 ° C. and 25%.
排気温度はサーバの発熱量、風量によって異なるが、吸排気での温度上昇は一般的に15K程度で設計される。一方、データセンタ内のIT機器が設置されている部屋には、水漏れによる漏電発生を懸念して、加湿装置を設けない。したがって、サーバからの排気の絶対湿度はサーバの吸気の絶対湿度と同じ値となる。
The exhaust temperature varies depending on the heat generation amount and air volume of the server, but the temperature rise in intake and exhaust is generally designed at about 15K. On the other hand, the room where the IT equipment in the data center is installed is not provided with a humidifier because of fear of leakage due to water leakage. Therefore, the absolute humidity of the exhaust from the server is the same value as the absolute humidity of the intake air of the server.
このように高温のサーバからの排気(温湿度4a)に水噴霧装置を用いて加湿を行うことで、絶対湿度を上昇させることができる。水への加熱を行わないため、湿り空気線図1上では等エンタルピーで変化する。
As described above, it is possible to increase the absolute humidity by humidifying the exhaust gas (temperature and humidity 4a) from the high-temperature server using the water spray device. Since heating to water is not performed, it changes with equal enthalpy on the wet air diagram 1.
次に、温湿度の制御方法について説明する。
Next, the temperature and humidity control method will be described.
(1)まず、図1に示すように、サーバからの排気に水噴霧を行った後の湿り空気の温湿度5aを、(a)導入した外気の温湿度3(5℃、40%)とサーバの吸気温湿度7a(18℃、60%)の2点を通る直線の延長と、(b)サーバからの排気(温湿度4a)の等エンタルピー線の交点になるように制御する。
(1) First, as shown in FIG. 1, the temperature / humidity 5a of the humid air after water spraying is performed on the exhaust from the server, and (a) the temperature / humidity 3 (5 ° C., 40%) of the introduced outside air. Control is performed so that an extension of a straight line passing through two points of the intake temperature / humidity 7a (18 ° C., 60%) of the server and an isoenthalpy line of (b) exhaust from the server (temperature / humidity 4a).
(2)次に、湿り空気(温湿度5a)と導入する外気(温湿度3)の流量配分はサーバの吸気(温湿度7a)の絶対湿度となるように、両者を比例配分する。図1では湿り空気(温湿度5a)、導入する外気(温湿度3)、およびサーバの吸気(温湿度7a)の絶対湿度は、夫々0.0107、0.0022、0.0076kg/kgである。湿り空気(温湿度5a)は64%、導入する外気(温湿度3)は36%の流量比となる。図1ではサーバの吸気温湿度7aを18℃、60%としたが、他の場合でも同様にして湿り空気(温湿度5a)、導入する外気(温湿度3)の流量を見積もることができる。
(2) Next, the flow distribution of the humid air (temperature / humidity 5a) and the introduced outside air (temperature / humidity 3) are proportionally distributed so that the absolute humidity of the intake air (temperature / humidity 7a) of the server becomes equal. In FIG. 1, the absolute humidity of the humid air (temperature and humidity 5a), the outside air to be introduced (temperature and humidity 3), and the intake air (temperature and humidity 7a) of the server are 0.0107, 0.0022, and 0.0076 kg / kg, respectively. . The humid air (temperature and humidity 5a) has a flow rate ratio of 64%, and the outside air to be introduced (temperature and humidity 3) has a flow rate ratio of 36%. In FIG. 1, the intake temperature / humidity 7a of the server is set to 18 ° C. and 60%. However, in other cases, the flow rates of the humid air (temperature / humidity 5a) and the introduced outside air (temperature / humidity 3) can be estimated in the same manner.
なお、水噴霧前に、上記と同様、湿り空気(温湿度5a)64%、導入する外気(温湿度3)36%の流量割合で、高温のサーバからの排気(温湿度4a)と外気(温湿度3)を混合させることで、混合空気の温湿度6aは23℃、25%となる。この混合空気(温湿度6a)に水噴霧装置により水を噴霧させることで、サーバの吸気の温湿度7aを18℃、60%にすることは不可能ではないが、上述の高温の排気への水噴霧に比べ、外気導入の分だけ流量が多いことと、混合後でダクト等の設置が無いため、制御が極めて困難である。
Before spraying water, exhaust air (temperature / humidity 4a) and outside air (temperature / humidity 4a) and hot air (flow / humidity 3a) at a flow rate ratio of 64% wet air (temperature / humidity 5a) and outside air to be introduced (temperature / humidity 3) 36% as described above By mixing the temperature and humidity 3), the temperature and humidity 6a of the mixed air becomes 23 ° C. and 25%. It is not impossible to set the temperature and humidity 7a of the intake air of the server to 18 ° C. and 60% by spraying water on the mixed air (temperature and humidity 6a) with a water spray device. Compared with water spraying, the flow rate is larger by the amount of outside air introduced, and there is no installation of a duct or the like after mixing, so control is extremely difficult.
次に、図2に別の制御方法を示す。導入した外気の温湿度3は図1の場合と同様、5℃、40%である。また、IT機器を代表するサーバの吸気温湿度7bは推奨条件で最小温度18℃、かつ最小湿度45%である。サーバからの排気の温湿度4bは33℃、25%となる。この高温なサーバからの排気(温湿度4b)に水噴霧装置で加湿を行うことで、絶対湿度を上昇させることができる。図1の場合と同様にして、湿り空気(温湿度5b)は55%、導入する外気(温湿度3)は45%の流量比となる。
Next, another control method is shown in FIG. The temperature and humidity 3 of the introduced outside air is 5 ° C. and 40% as in the case of FIG. In addition, the intake air temperature and humidity 7b of a server representing an IT device has a minimum temperature of 18 ° C. and a minimum humidity of 45% under recommended conditions. The temperature and humidity 4b of the exhaust from the server is 33 ° C. and 25%. By humidifying the exhaust gas (temperature and humidity 4b) from the hot server with a water spray device, the absolute humidity can be increased. As in the case of FIG. 1, the flow rate of humid air (temperature / humidity 5b) is 55%, and the outside air to be introduced (temperature / humidity 3) is 45%.
また、水噴霧前に、図1と同様、湿り空気(温湿度5b)55%、導入する外気(温湿度3)45%の流量割合で、高温のサーバからの排気(温湿度4b)と導入する外気(温湿度3)を混合させることで、混合空気の温湿度6bは21.5℃、28%となる。しかし、高温の排気での水噴霧に比べ、外気導入の分だけ流量が多いことと、混合後でダクト等の設置が無いため、制御が極めて困難である。
Also, before water spraying, as in FIG. 1, exhaust air (temperature / humidity 4b) and introduction from a hot server at a flow rate of 55% moist air (temperature / humidity 5b) and 45% outside air (temperature / humidity 3) to be introduced. By mixing the outside air (temperature and humidity 3), the temperature and humidity 6b of the mixed air becomes 21.5 ° C. and 28%. However, compared to water spraying with high-temperature exhaust, control is extremely difficult because the flow rate is larger by the amount of outside air introduced and there is no duct or the like after mixing.
図3は、IT機器を搭載したラックを多数設置したデータセンタなどの計算機室の側面図を示す。データセンタ8はサーバ等のIT機器11を搭載したマシン室9、空調機12を設置した空調機室10で構成されている。空調機室12には外気導入用の送風機13が設けられ、また、マシン室の出口側には排気用送風機14が設けられている。マシン室9と空調機室10の境界面の空調機室10側に水噴霧装置15が取り付けられている。
Fig. 3 shows a side view of a computer room such as a data center in which many racks equipped with IT equipment are installed. The data center 8 includes a machine room 9 in which an IT device 11 such as a server is mounted, and an air conditioner room 10 in which an air conditioner 12 is installed. The air conditioner room 12 is provided with a blower 13 for introducing outside air, and an exhaust blower 14 is provided on the outlet side of the machine room. A water spray device 15 is attached to the air conditioner room 10 side of the boundary surface between the machine room 9 and the air conditioner room 10.
空調機室10内に配置した空調機12の吐出し口から出た空気16はマシン室9の床下17に流れ込む。流れ込んだ空気は、図示しないマシン室9の床面に設けた空気流入用の格子状の穴(グレーチング)を介してIT機器11を搭載したラック吸気面に流入する。ラック吸気面に流入した空気は、IT機器11内を通過し、熱交換した後、高温の空気となってマシン室9の天井18に流れ込む。
The air 16 exiting from the discharge port of the air conditioner 12 disposed in the air conditioner room 10 flows into the lower floor 17 of the machine room 9. The air that has flowed in flows into the rack air intake surface on which the IT equipment 11 is mounted through lattice holes (gratings) for air inflow provided on the floor surface of the machine room 9 (not shown). The air flowing into the rack intake surface passes through the IT device 11 and exchanges heat, and then becomes hot air and flows into the ceiling 18 of the machine room 9.
排気用送風機14は、前記導入した外気の流量と同じ流量の空気をマシン室9外へ排出する。マシン室9の外へ排出されない高温の空気はマシン室9と空調機室10の境界面の空調機室10側に設けた水噴霧装置15を通過して空調機室10へ流れ込む。
The exhaust blower 14 discharges air having the same flow rate as that of the introduced outside air to the outside of the machine room 9. The high-temperature air that is not discharged outside the machine room 9 passes through the water spray device 15 provided on the air conditioner room 10 side of the boundary surface between the machine room 9 and the air conditioner room 10 and flows into the air conditioner room 10.
水噴霧装置15は、高温の空気に水を噴霧し、湿った空気として空調機室10に流し込む。水噴霧装置15は、ダクト状であり、マシン室9及び空調機室10の奥行き方向に渡って全域に設けるのが湿度を上昇させる上で望ましい。
The water spray device 15 sprays water on high-temperature air and flows it into the air conditioner room 10 as moist air. The water spraying device 15 has a duct shape, and it is desirable to provide the entire area in the depth direction of the machine room 9 and the air conditioner room 10 in order to increase the humidity.
なお、水を噴霧された空気16は外気から導入した空気16と空調機室10内で混合しされ、空調機12の吸込口に吸い込まれ、前述したように空調機10の吐出し口から流出する。
The air 16 sprayed with water is mixed with the air 16 introduced from the outside air in the air conditioner room 10, sucked into the air inlet of the air conditioner 12, and flows out from the outlet of the air conditioner 10 as described above. To do.
この場合、空調機12は、空気16を送風するだけの機能でよく、空調機12の電力は省エネ化できる。また、空調機吐出温度より前記混合空気の温度が低い場合は空調機12を介することなく直接、前記混合空気16をマシン室9の床下17に流入することができる。
In this case, the air conditioner 12 only needs to function to blow the air 16, and the power of the air conditioner 12 can save energy. Further, when the temperature of the mixed air is lower than the discharge temperature of the air conditioner, the mixed air 16 can flow directly into the under floor 17 of the machine room 9 without going through the air conditioner 12.
なお、外気から導入する空気16の量は外気導入用送風機13を制御することにより調整することができる。図1、2に示す例では、導入する外気の流量は全体の流量の36%、および45%である。
It should be noted that the amount of air 16 introduced from outside air can be adjusted by controlling the outside air introducing blower 13. In the example shown in FIGS. 1 and 2, the flow rate of outside air to be introduced is 36% and 45% of the total flow rate.
以上説明したように、本実施形態によれば、空調機12の冷房用の動力を停止して送風用動力のみの運転、あるいは空調機12を介さないで混合した空気16を直接マシン室へ流入させることができるので、空調機12に供給する電力を削減することができる。
As described above, according to the present embodiment, the cooling power of the air conditioner 12 is stopped and only the blowing power is operated, or the mixed air 16 without flowing through the air conditioner 12 flows directly into the machine room. Therefore, the power supplied to the air conditioner 12 can be reduced.
図4は、第2の実施形態を説明する図である。ここでは第1の実施形態(図3)と異なる箇所を中心に説明する。
FIG. 4 is a diagram for explaining the second embodiment. Here, it demonstrates centering on a different location from 1st Embodiment (FIG. 3).
排気用送風機14を通過した空気16は、計算機室8の外壁20の計算機室8側に配置した熱交換用凝縮器19を通して外部に排出される。この例では、外部の冷たい空気と高温の排気が外壁20および熱交換用凝縮器19を介して熱交換し、高温の排気16が冷却される。このため、熱交換用凝縮器19には水滴が付着し、付着した水滴は凝縮水受けタンク21に蓄えられる。
The air 16 that has passed through the exhaust fan 14 is discharged to the outside through a heat exchange condenser 19 disposed on the computer room 8 side of the outer wall 20 of the computer room 8. In this example, external cold air and hot exhaust gas exchange heat through the outer wall 20 and the heat exchanging condenser 19, and the hot exhaust gas 16 is cooled. For this reason, water drops adhere to the heat exchanging condenser 19, and the attached water drops are stored in the condensed water receiving tank 21.
図示していないが、凝縮水受けタンク21はポンプを介して水噴霧装置15に繋がっており、凝縮水受けタンク21に蓄えられた水は水噴霧装置15を介して、マシン室からの高温の空気16に噴霧される。
Although not shown, the condensate water receiving tank 21 is connected to the water spraying device 15 via a pump, and the water stored in the condensate water receiving tank 21 is supplied with high temperature from the machine room via the water spraying device 15. Sprayed into the air 16.
これにより、噴霧用の水は循環して(リサイクル)利用することができ、外部から供給する必要はない。
This allows the water for spraying to be recycled (recycled) and not supplied from the outside.
また、第1の実施例と同様に、空調機12の冷房用の動力を停止して送風用動力のみの運転、あるいは空調機12を介さないで混合した空気16を直接マシン室へ流入させることができるので、空調機12に供給する電力を削減することができる。
Further, as in the first embodiment, the cooling power of the air conditioner 12 is stopped and only the blasting power is operated, or the mixed air 16 is allowed to flow directly into the machine room without passing through the air conditioner 12. Therefore, the power supplied to the air conditioner 12 can be reduced.
次に、図5は第3の実施形態を説明する図である。これは、第2の実施形態において、導入した外気がIT機器の入口空気温湿度環境推奨範囲内の場合の例である。
Next, FIG. 5 is a diagram for explaining the third embodiment. This is an example when the introduced outside air is within the recommended range of the inlet air temperature and humidity environment of the IT device in the second embodiment.
外気導入用送風機13により導入した空気の全てはIT機器を通過し、高温となった空気は排気用送風機14を介してマシン室8の外部へ放出される。なお、冷たい外気と高温の排気は外壁20と熱交換用凝縮器19を介して熱交換し、高温の排気16が冷やされることで熱交換用凝縮器19に水滴が付着し、付着した水滴は凝縮水受けタンク21に蓄えられる。
All of the air introduced by the outside air introduction blower 13 passes through the IT equipment, and the high temperature air is discharged to the outside of the machine room 8 via the exhaust blower 14. The cold outside air and the high-temperature exhaust are heat-exchanged via the outer wall 20 and the heat exchange condenser 19, and when the high-temperature exhaust 16 is cooled, water drops adhere to the heat exchange condenser 19, and the attached water drops It is stored in the condensed water receiving tank 21.
マシン室のIT機器入口空気の湿度が低下した場合、前記凝縮水受けタンク21の水をポンプを介して水噴霧装置15へ供給して水噴霧装置15を動作させる。このとき外気導入用送風機13、排気用送風機14、空調機12の風量制御を行い、水噴霧装置15に高温空気を供給する(図3の構成となる)。
When the humidity of the IT equipment inlet air in the machine room decreases, the water in the condensed water receiving tank 21 is supplied to the water spraying device 15 via a pump to operate the water spraying device 15. At this time, the air volume control of the outside air introduction blower 13, the exhaust blower 14, and the air conditioner 12 is performed, and high-temperature air is supplied to the water spray device 15 (the configuration shown in FIG. 3).
第2,3の実施形態(図4,5)は、凝縮水受けタンク21に蓄えられた水はポンプによって水噴霧装置15へ水を搬送される構造である。
In the second and third embodiments (FIGS. 4 and 5), the water stored in the condensed water receiving tank 21 is transported to the water spray device 15 by a pump.
図6は、第4の実施形態を説明する図である。この例では、凝縮水受けタンクの水を水噴霧装置15に導くためのポンプを省略し、かつ水の再利用(循環)を実現している。
FIG. 6 is a diagram for explaining the fourth embodiment. In this example, the pump for guiding the water in the condensed water receiving tank to the water spray device 15 is omitted, and the reuse (circulation) of water is realized.
図6に示すように、IT機器11を通過して高温となった空気16は、図4、図5の例の場合と同様に、排気用送風機14を通り熱交換用凝縮器19により外気と熱交換する空気16と、マシン室9へ戻る空気16に分かれる。なお、凝縮水受けタンク21は、がマシン室9に戻る空気16が流通する領域まで延長して配置されている。この凝縮水受けタンク21の延長して配置された領域には、多孔質板22が設けられてる。
As shown in FIG. 6, the air 16 that has passed through the IT device 11 and has reached a high temperature passes through the exhaust blower 14 and the heat exchange condenser 19 in the same manner as in the examples of FIGS. 4 and 5. It is divided into air 16 for heat exchange and air 16 returning to the machine room 9. The condensed water receiving tank 21 is arranged to extend to a region where the air 16 that returns to the machine room 9 flows. A porous plate 22 is provided in an extended region of the condensed water receiving tank 21.
多孔質板22は水を吸収し易い機能を有し、例えばスポンジ、布、金属金網等で構成されている。凝縮水受けタンク21に貯まった水はこの多孔質板22の毛細管現象で汲み上げられ、そこに高温の空気16が流れることでこの高温の空気16に水分を含ませることができる。水を含む高温の湿り空気はマシン室9の床下17で外気から導入された空気と混合して、IT機器11の吸気口へ流入する。なお、混合空気の温度、湿度は前述の通り、環境推奨範囲内とする。これにより、ポンプを駆動することなく、水を循環するシステムを構成することができる。これにより、省エネの効果を更に向上できる。
The porous plate 22 has a function of easily absorbing water, and is composed of, for example, a sponge, a cloth, a metal wire mesh, or the like. The water stored in the condensed water receiving tank 21 is pumped up by the capillary action of the porous plate 22, and the hot air 16 flows there, so that the hot air 16 can contain moisture. The hot humid air containing water mixes with the air introduced from the outside air under the floor 17 of the machine room 9 and flows into the intake port of the IT device 11. Note that the temperature and humidity of the mixed air are within the recommended environmental range as described above. Thereby, the system which circulates water can be comprised, without driving a pump. Thereby, the effect of energy saving can further be improved.
上記のような構成とすることによって、データセンタの湿度を省エネルギで制御することができる。
With the above configuration, the humidity of the data center can be controlled with energy saving.
8 データセンタ
9 マシン室
10 空調機室
11 IT機器(サーバ、記憶装置、ネットワーク機器)
12 空調機
13 外気導入用送風機
14 排気用送風機
15 水噴霧装置
16 空気の流れ
17 床下
18 天井
19 熱交換用凝縮器
20 外壁
21 凝縮水受けタンク
22 多孔質板 8Data Center 9 Machine Room 10 Air Conditioner Room 11 IT Equipment (Server, Storage Device, Network Equipment)
12 Air conditioner
13 Blower for introducing outside air
DESCRIPTION OFSYMBOLS 14 Exhaust blower 15 Water spray apparatus 16 Air flow 17 Underfloor 18 Ceiling 19 Condenser for heat exchange 20 Outer wall 21 Condensate receiving tank 22 Porous board
9 マシン室
10 空調機室
11 IT機器(サーバ、記憶装置、ネットワーク機器)
12 空調機
13 外気導入用送風機
14 排気用送風機
15 水噴霧装置
16 空気の流れ
17 床下
18 天井
19 熱交換用凝縮器
20 外壁
21 凝縮水受けタンク
22 多孔質板 8
12 Air conditioner
13 Blower for introducing outside air
DESCRIPTION OF
Claims (8)
- 外気を導入する外気導入用送風機と、
空調機を具備し、導入した外気に温度調整を施し温度調整された空気をIT機器を収納したマシン室に供給する空調機室と、
前記マシン室の前記IT機器により加熱された空気を排気する排気用送風機と、
前記マシン室で加熱された空気中に水を噴霧し、水が噴霧された空気を空調室に供給する水噴霧装置を備え、
前記空調機は、前記水が噴霧された空気と外気導入用送風機により送風された空気からなる混合空気に温度調整を施してマシン室に供給することを特徴とする外気導入式データセンタ。 An outside air introduction blower for introducing outside air;
An air conditioner room equipped with an air conditioner, adjusting the temperature of the introduced outside air, and supplying the temperature-adjusted air to the machine room containing the IT equipment;
An exhaust fan for exhausting air heated by the IT device in the machine room;
A water spray device for spraying water into the air heated in the machine room and supplying the air sprayed with water to the air conditioning room;
The outside air introduction type data center, wherein the air conditioner adjusts the temperature of the mixed air composed of the air sprayed with the water and the air blown by the outside air introduction blower and supplies the mixed air to the machine room. - 請求項1記載の外気導入式データセンタにおいて、
前記空調機は、前記混合空気の温度が空調機吐き出し温度より低いとき、前記混合空気を空調を施すことなく直接マシン室に供給することを特徴とする外気導入式データセンタ。 In the outside air introduction type data center according to claim 1,
When the temperature of the mixed air is lower than the discharge temperature of the air conditioner, the air conditioner supplies the mixed air directly to the machine room without performing air conditioning. - 請求項1記載の外気導入式データセンタにおいて、
水噴霧装置はマシン室の絶対湿度が設定値以下になったとき水を噴射することを特徴とする外気導入式データセンタ。 In the outside air introduction type data center according to claim 1,
An outside air introduction type data center characterized in that the water spraying device jets water when the absolute humidity of the machine room falls below a set value. - 外気を導入する外気導入用送風機と、
空調機を具備し、導入した外気に温度調整を施し温度調整された空気をIT機器を収納したマシン室に供給する空調機室と、
前記マシン室の前記IT機器により加熱された空気を排気する排気用送風機と、
前記加熱された空気と外気と熱交換する凝縮器を有し、前記凝縮器に凝縮された水分を貯蔵する凝縮水受けタンクと、
該タンクの水を水噴霧装置に供給する水循環装置と、
前記マシン室で加熱された空気中に水を噴霧し、水が噴霧された空気を空調室に供給する水噴霧装置を備え、
前記空調機は、前記水が噴霧された空気と外気導入用送風機により送風された空気からなる混合空気に温度調整を施してマシン室に供給することを特徴とする外気導入式データセンタ。 An outside air introduction blower for introducing outside air;
An air conditioner room equipped with an air conditioner, adjusting the temperature of the introduced outside air, and supplying the temperature-adjusted air to the machine room containing the IT equipment;
An exhaust fan for exhausting air heated by the IT device in the machine room;
A condenser for exchanging heat with the heated air and outside air, and a condensed water receiving tank for storing moisture condensed in the condenser;
A water circulation device for supplying water from the tank to a water spray device;
A water spray device for spraying water into the air heated in the machine room and supplying the air sprayed with water to the air conditioning room;
The outside air introduction type data center, wherein the air conditioner adjusts the temperature of the mixed air composed of the air sprayed with the water and the air blown by the outside air introduction blower and supplies the mixed air to the machine room. - 請求項4記載の外気導入式データセンタにおいて、
前記空調機は、前記混合空気の温度が空調機吐き出し温度より低いとき、前記混合空気を空調を施すことなく直接マシン室に供給することを特徴とする外気導入式データセンタ。 In the outside air introduction type data center according to claim 4,
When the temperature of the mixed air is lower than the discharge temperature of the air conditioner, the air conditioner supplies the mixed air directly to the machine room without performing air conditioning. - 請求項4記載の外気導入式データセンタにおいて、
水噴霧装置はマシン室の絶対湿度が設定値以下になったとき水を噴射することを特徴とする外気導入式データセンタ。 In the outside air introduction type data center according to claim 4,
An outside air introduction type data center characterized in that the water spraying device jets water when the absolute humidity of the machine room falls below a set value. - 外気を導入する外気導入用送風機と、
空調機を具備し、導入した外気に温度調整を施し温度調整された空気をIT機器を収納したマシン室に供給する空調機室と、
前記マシン室の前記IT機器により加熱された空気の一部を排気する排気用送風機と、 前記加熱された空気である排気と外気とを熱交換する凝縮器を有し、前記凝縮器に凝縮された水分を貯蔵する凝縮水受けタンクと、
前記加熱された空気の残部をマシン室に還流させる流路と、
前記タンクに貯蔵された水内に一端を浸漬し、多端を前記流路に配置した多孔質板とを備え、
前記空調機は、前記水が噴霧された空気と外気導入用送風機により送風された空気からなる混合空気に温度調整を施してマシン室に供給することを特徴とする外気導入式データセンタ。 An outside air introduction blower for introducing outside air;
An air conditioner room equipped with an air conditioner, adjusting the temperature of the introduced outside air, and supplying the temperature-adjusted air to the machine room containing the IT equipment;
An exhaust fan for exhausting part of the air heated by the IT device in the machine room, and a condenser for exchanging heat between the exhaust air that is the heated air and outside air, and is condensed in the condenser A condensed water receiving tank for storing the moisture,
A flow path for refluxing the remainder of the heated air to the machine chamber;
A porous plate having one end immersed in the water stored in the tank and having multiple ends disposed in the flow path;
The outside air introduction type data center, wherein the air conditioner adjusts the temperature of the mixed air composed of the air sprayed with the water and the air blown by the outside air introduction blower and supplies the mixed air to the machine room. - 請求項7記載の外気導入式データセンタにおいて、
前記空調機は、前記混合空気の温度が空調機吐き出し温度より低いとき、前記混合空気を空調を施すことなく直接マシン室に供給することを特徴とする外気導入式データセンタ。 In the outside air introduction type data center according to claim 7,
When the temperature of the mixed air is lower than the discharge temperature of the air conditioner, the air conditioner supplies the mixed air directly to the machine room without performing air conditioning.
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JP2010115602A JP5416032B2 (en) | 2010-05-19 | 2010-05-19 | Outside air type data center |
JP2010-115602 | 2010-05-19 |
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US10299414B2 (en) | 2013-02-12 | 2019-05-21 | Hidetoshi Kaneo | Cooling mechanism for data center |
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JP5932350B2 (en) | 2012-01-18 | 2016-06-08 | 株式会社東芝 | Air conditioning apparatus and air conditioning control method |
CN104755850B (en) | 2012-11-02 | 2017-05-10 | 富士通株式会社 | Modular data center and control method therefor |
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JP5416032B2 (en) | 2014-02-12 |
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