JP6673968B2 - Air conditioning system for rooms containing information and communication equipment - Google Patents

Description

  The present invention relates to an air conditioning system for a room, such as a data center, that accommodates a plurality of heat-generating information communication devices such as electric and communication devices and servers.

  Information and communication devices that generate heat, such as electrical / communication devices and servers (hereinafter sometimes simply referred to as “ICT devices”), generally include a small cooling fan, also called a server fan, and In addition, cool air is sucked in from the front side of the device, and the heated air is exhausted to the rear side. In addition, these ICT devices are mounted in multiple stages on a rack, and rows (rack rows) of the racks are arranged such that the front surfaces and the rear surfaces of the ICT devices mounted on the rack face each other via a space. The space facing the intake surface where cooling air exists is called a cold aisle, and the space facing the exhaust surface and where high-temperature air from a server or the like exists is called a hot aisle.

  Conventionally, the rack rows are arranged so that the cold aisles formed by facing the intake surfaces and the hot aisles formed by facing the exhaust surfaces are alternately arranged. Have been. In such a layout, the air supply from the air conditioner passes through a row of racks from the cold aisle at right angles, is discharged to the hot aisle side, and follows a one-pass flow path returning to the air conditioner (Patent Document 1).

JP 2010-71482 A

  Meanwhile, recent ICT devices include a standard ICT device whose operation is guaranteed in a standard temperature range of about 15 ° C. to 27 ° C., and a high-temperature resistant ICT device whose operation is guaranteed even in a higher temperature range of 35 ° C. or higher. . Since the high-temperature resistant ICT device can be operated without any problem even in a higher temperature environment than before, adopting the ICT device can set the blow-out air temperature of the air-conditioning device high, and accordingly, the air conditioning It is expected that the use of high-temperature resistant ICT equipment will increase in the future because energy can be saved.

  However, at present, standard ICT devices are installed in most server rooms, and it is not practical to immediately replace all of them with high-temperature-resistant ICT devices. Therefore, a part of the existing standard ICT equipment is gradually replaced with the high-temperature resistant ICT equipment, and in reality, it is considered that the standard ICT equipment and the high-temperature resistant ICT equipment coexist in the server room.

  In view of this point, in the technology of Patent Document 1, when air-conditioning air having a temperature matching the standard ICT device is supplied when air-conditioning a room in which the standard ICT device and the high-temperature ICT device coexist, the high-temperature ICT For the equipment, it is necessary to supply air at an excessively low temperature, which wastes energy. Conversely, if air-conditioned air is supplied at a temperature suitable for the high-temperature ICT equipment, the operation of the standard ICT equipment will be hindered. In order to prevent these, there is a problem that the room must be partitioned into a standard ICT equipment area and a high-temperature resistant ICT equipment area, and a system for individually supplying conditioned air at a temperature suitable for each must be constructed.

  The present invention has been made in view of such a point, and an object of the present invention is to cool each ICT device more efficiently in a room where the standard ICT device and the high-temperature resistant ICT device coexist as described above.

To achieve the above object, the present invention provides a standard information communication device having an intake surface on the front side, an exhaust surface on the back side, and operation guaranteed in a standard temperature range, an intake surface on the front side, and a rear side. An air conditioning system for a room that has an exhaust surface, and a high-temperature durable information and communication device that is guaranteed to operate up to a temperature range higher than the standard temperature range,
The standard information communication device is a plurality of standard device rows arranged with their fronts aligned,
The high-temperature-resistant information communication device forms a high-temperature-resistant device array in which a plurality of high-temperature-resistant information communication devices are arranged with their front surfaces aligned.
The front side space of the standard equipment row constitutes a cold aisle to which low-temperature air is supplied,
The back side space of the standard equipment row constitutes a hot aisle from which exhaust air from the standard equipment row is exhausted, the front side of the high temperature durable equipment row faces the hot aisle, and the rear side of the high temperature durable equipment row. The space constitutes a super hot aisle from which exhaust gas from the high temperature resistant equipment row is discharged,
The standard device row, having a bypass flow path to bypass the high temperature resistant equipment row,
The bypass flow path is a first bypass flow path that introduces the low-temperature air into the hot aisle without passing through the standard equipment row from the cold aisle, and the high-temperature resistant equipment row from the hot aisle. A second bypass flow path for introducing the air of the hot aisle to the super hot aisle without passing through;
The first bypass flow path is formed in a part of the standard device row in a longitudinal direction,
The flow rate passing through the first bypass flow path is smaller than the flow rate passing through the standard device row,
The second bypass flow path is formed in a part of the high-temperature resistant equipment row in a longitudinal direction,
The flow rate passing through the second bypass flow path is smaller than the flow rate passing through the high-temperature resistant equipment row,
The cold aisle and the hot aisle, and the hot aisle and the super hot aisle are separated by a partition member, and the first bypass passage has a flow rate according to a pressure difference between the hot aisle and the cold aisle. A flow control mechanism for controlling the
The second bypass passage is provided with a flow rate adjusting mechanism for controlling a flow rate in accordance with a pressure difference between the super hot aisle and the hot aisle .
Here, to align the front surfaces of the standard information communication device and the high-temperature resistant information communication device means that the front side, which is the intake surface of each device, is all directed in the same direction, that is, toward the front side. This does not mean that the front surfaces of the devices are aligned without deviation and the front surfaces are aligned without protruding forward.
In addition, the standard equipment row and high-temperature resistant equipment row are composed of rows in which standard equipment and high-temperature resistant equipment themselves are stacked in multiple stages, or high-standard equipment and high-temperature resistant equipment are arranged in a horizontal direction. In addition to the case where it is mounted, a rack row of standard equipment and a rack row of high-temperature resistant equipment may be mounted on a rack, or a mixed form thereof.
Further, the air of the super hot aisle may be used for preheating a heat source of an air conditioner or make-up water of a boiler. Furthermore, the standard equipment row and the high-temperature resistant equipment row may be arranged in parallel in a plan view. The cold aisle and the standard equipment such that the direction of air flowing from the cold aisle to the super hot aisle through the standard equipment row, the hot aisle, and the high-temperature resistant equipment row is one direction. A row, the hot aisle, the high temperature resistant equipment row, and the super hot aisle may be arranged.

According to the present invention, the low-temperature air of the cold aisle in the space on the front side of the standard equipment row is sucked in from the intake surface by a small fan provided in the standard information communication equipment of the standard equipment row, and after cooling the equipment, The temperature is raised and the air is exhausted to the hot aisle on the back side, that is, on the front side of the high-temperature resistant device row. The heated air is sucked in from the intake surface by a small fan provided in the high-temperature resistant information and communication equipment of the high-temperature resistant equipment row, and after cooling the equipment, the temperature is further increased and the super hot air in the rear space is increased. Exhausted in the aisle . Since the operation of high-temperature resistant information and communication equipment is guaranteed in a temperature range higher than the standard temperature range, the air taken in by the high-temperature durable information and communication equipment has a higher temperature than the air taken in by the standard information and communication equipment, that is, Even air that has passed through the standard equipment row and is exhausted to the rear side by the standard information communication equipment can be used for cooling the high-temperature resistant information communication equipment, and does not hinder the operation of the high-temperature resistant information communication equipment.

If above, the cold aisle on the front side space of the standard instrument column, the high-temperature service apparatus columns of the hot aisle in the front side space, and the high-temperature service apparatus column the hot service equipment column and hot aisle of the front side space The super hot aisle in the back side space may be partitioned by a partition member. Here, the front side space of the standard equipment row is not necessarily limited to the space located on the front side of the standard equipment row, and the air supply from the air conditioner is directly supplied in communication with the front side space. Is included.

  In addition, the bypass flow path referred to here is not only a closed flow path in which the respective spaces communicate with each other by a duct or the like, but also, for example, each space is adjacent to each other and there is no partition between them, or an opening is provided in a member for partitioning. It may be an open air flow path, for example.

  The bypass channel has an opening in accordance with a pressure difference between the front space of the standard equipment row, the front space of the high-temperature resistant equipment row, and the rear space of the high-temperature resistant equipment row. A flow rate adjusting mechanism for adjusting may be provided. In the case of a closed system flow path such as a duct, a variable damper may be provided in the duct. Regarding the open bypass passage, an opening may be formed in the partition member, and for example, a shutter, a door, or the like having a variable opening / closing degree may be provided in the opening.

  According to the present invention, in a room where a standard ICT device and a high-temperature resistant ICT device coexist, it is possible to efficiently cool each ICT device with less waste than before.

It is explanatory drawing which showed typically the plane of the air-conditioning system concerning embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 2nd Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 3rd Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 4th Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 5th Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 6th Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 7th Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 8th Embodiment. It is explanatory drawing which showed typically the plane of the air-conditioning system concerning 9th Embodiment.

  Hereinafter, an air conditioning system for a room accommodating information communication equipment according to the embodiment will be described. FIG. 1 schematically illustrates a plane of an air conditioning system 1 according to the embodiment. A standard equipment row SL in which racks 10 each having a plurality of stages of standard information communication devices guaranteed to operate at a temperature range of, for example, 15 ° C. to 27 ° C. are arranged in a longitudinal direction, and a temperature range higher than the standard temperature range, for example, 35 ° C. High-temperature resistant equipment rows HL in which racks 20 each having a plurality of stages of high-temperature resistant information and communication equipment whose operation is guaranteed even in the above-described temperature atmosphere are arranged in the longitudinal direction are installed in parallel at intervals in front and rear. .

Air conditioner 2, for example, packaged air conditioners 2, is installed outside the chamber R, incorporating return air RA from the chamber R, After descending temperature with cold water coil or the like, into the chamber R as the supply air SA Supply. In this example, the supply air SA is supplied to the front space of the standard equipment row SL, and the front space forms a cold aisle C (for example, about 25 ° C.). As a supply route of the air supply SA from the air conditioner 2, a known technique applied to a so-called server room or the like of this type can be applied. For example, supply from the floor through the underfloor space, supply from the ceiling through the space above the ceiling, supply from a supply port formed in the wall surface of the room R, and the like can be adopted. This is the same in the examples of FIGS. 2 and 3 described later.

  The low-temperature air of the cold aisle C is taken in by a small fan provided in the standard information communication device mounted on the standard device line SL, and is used to cool each standard information communication device, and after the temperature rises, the rear side That is, the air is exhausted to the front side of the high-temperature resistant equipment row HL. The front side space, that is, the space between the standard equipment row SL and the high-temperature resistant equipment row HL forms a hot aisle H (for example, about 35 ° C.).

  The air of the hot aisle H is taken in by a small fan provided in the high-temperature durable information communication device mounted on the high-temperature durable device line HL, and is used for cooling each high-temperature durable information communication device, and further heated. Is exhausted to the space between the back surface of the high-temperature resistant equipment line HL and the wall surface of the room R. The space forms a so-called super hot aisle SH (for example, about 35 ° C. to 50 ° C.) at a higher temperature than the hot aisle H.

  Then, the high-temperature air of the super hot aisle SH is introduced into the air conditioner 2 as return air RA. As the introduction route to the air conditioner 2, a known technique applied to a so-called server room or the like of this type can be applied. For example, a route from the air return opening formed on the floor surface to the space under the floor, a route from the air return opening formed on the ceiling surface to a route through the space above the ceiling, a route from the air return opening formed on the wall surface of the room R, etc. are adopted. it can. This is the same in the examples of FIGS. 2 and 3 described later.

  As described above, according to the air conditioning system 1 according to this embodiment, the air supply SA supplied to the cold aisle C on the front side of the standard equipment row SL first receives the standard information communication equipment mounted on the standard equipment row SL. The air used for cooling, and then heated and exhausted to the hot aisle H between the standard equipment row SL and the high-temperature resistant equipment row HL is the high-temperature resistant information and communication equipment mounted on the high-temperature resistant equipment row HL. Used for cooling. The high-temperature air used for cooling the high-temperature durable information and communication equipment and thus further heated is returned from the super hot aisle SH on the rear side of the high-temperature durable equipment row HL to the air conditioner 2 as return air RA. .

  Therefore, according to the air-conditioning system 1 according to the embodiment, both the standard information communication device whose operation is guaranteed in the standard temperature range and the high-temperature durable information communication device whose operation is guaranteed even in the temperature range higher than the standard temperature range are accommodated. Each of the ICT devices can be efficiently cooled even in the closed room R.

In addition, the air conditioner used in the conventional one-pass type air conditioner operates at a temperature difference equal to the intake / exhaust temperature difference (10 to 15 ° C.) of the ICT device. On the other hand, in the air-conditioning system 1 according to the embodiment, the temperature difference between the intake and exhaust air of the ICT device is two stages of the standard information communication device and the high-temperature durable information communication device. For example, assuming that the intake and exhaust temperature difference of the standard information communication device is 10 to 15 ° C., the intake and exhaust temperature difference of the high-temperature durable information communication device is the same as normal (10 to 15 ° C.) Can secure a difference in intake and exhaust temperatures of the air conditioner 2 of 20 to 30 ° C. For this reason, the amount of air supplied to the air conditioner is reduced to handle the heat load of the ICT device. That is, the amount of heat to be processed is represented by: heat amount [kW] = specific heat of air [kJ / (kg · K)] × air amount [m ³ /s]×1.2 [kg / m ³ ] × temperature difference [K]. However, in the case of the same amount of heat, if the temperature difference is made large, the air volume becomes small. Therefore, as in the above example, the hot air in the hot aisle H is further used as the intake air for the high-temperature durable information communication device, so that the temperature difference between the air supply and exhaust air of the air conditioner increases, and the air supply air volume of the air increases accordingly. Since the temperature can be reduced and the temperature difference between the supply and exhaust air is large, the efficiency of the air conditioner is improved.

  In addition, since the air conditioning is performed with a larger temperature difference as described above than the return air temperature difference of the conventional air conditioner, the temperature span of the heat source device can also shift to a large temperature difference, and the height of the heat source device can be increased. Efficient operation is expected. In addition, the standard information communication device and the high-temperature resistant information communication device are mounted on separate rack rows, and their exhausts are separated to be used for cooling the standard information communication device mounted on the standard device row SL. Since the high-temperature exhaust gas is used for cooling the high-temperature endurable information communication device, the exhaust gas after the use of the standard information communication device is effectively used. Moreover, since the exhaust air after cooling the high-temperature-resistant information communication device in this way has a high temperature of, for example, 35 ° C. to 50 ° C., the use value of waste heat is increasing. Such high-temperature air can be used as a heat source for air conditioners in server rooms, or for data centers that cool by operating absorption chillers using steam generated by boilers or factory waste heat. By preheating the make-up water of the boiler with the heat of the air to assist steam production, it can assist cooling as a result. Of course, other than the above-mentioned cooling of the communication information equipment, it can be used as a heat source for air conditioning in another place or room, for example, in another different application.

  In the air-conditioning system 1 according to the embodiment, in order to avoid air from entering the cold aisle C, the hot aisle H, and the super hot aisle SH, the rear end portions of the standard equipment row SL and the high-temperature resistant equipment row HL ( The partition members 4 and 5 may be installed between the (peripheral portion), the ceiling, the vicinity of the ceiling, and the floor surface to increase the airtightness and independence of each space. It is preferable to use a heat-insulating material for this kind of partitioning material, and it is preferable to select and install a panel-like or sheet-like material depending on the location.

Further, the amount of air blown from the air conditioner 2 is determined by the air volume of the entire fan of the standard information communication device mounted on the standard device line SL, and the entire fan of the high temperature resistant information communication device mounted on the high temperature resistant device line HL. It is desirable to control the air flow to be equal to or larger than the larger air flow. By doing so, it is possible to prevent an airflow from flowing from the high temperature region side such as the hot aisle H or the super hot aisle SH to the low temperature region side. For example, the air flow of the entire fan of the standard information communication device mounted on the standard device row SL is 7,000 m ³ , and the air flow of the entire fan of the high temperature durable information communication device mounted on the high temperature resistant device line HL is 10 , indicating an 000M ^3, blowing air volume of the air conditioner 2 is controlled to be 10,000 m ^3. When the air flow of the entire fan of the standard information communication device mounted on the standard device row SL is 10,000 m ³ and the air flow of the entire fan of the high temperature resistant information communication device is 7,000 m ³ , the air conditioner 2 Is preferably controlled to be 10,000 m ³ .

  FIG. 2 schematically shows a plane of an air conditioning system 31 according to the second embodiment. In a room R, an intake surface of standard information communication equipment mounted with two standard equipment rows SL1 and SL2. Are arranged so as to face each other across a space to be a cold aisle C. On the back side of each of the standard equipment rows SL1 and SL2, high-temperature resistant equipment rows HL1 and HL2 are respectively installed in parallel with a space serving as a hot aisle H.

  Also in this air conditioning system 31, the high-temperature air of the super hot aisle SH on the back side of the high-temperature durable equipment rows HL1 and HL2 is taken in as return air RA, the temperature is reduced by an air conditioner, and supplied to the cold aisle C. In the example, in consideration of the number of ICT devices housed in the room R, a total of four air conditioners 32, 33, 34, and 35 are arranged outside one side wall Ra of the room R.

  That is, the air conditioner 32 takes in the high-temperature air of the super hot aisle SH on the back side of the high-temperature durable equipment row HL1 as the return air RA to perform the primary temperature lowering process, and temporarily removes the air after the primary temperature lowering process to the air conditioner 33. The air which has been further cooled by the air conditioner 33 is supplied into the room R as air supply SA. Similarly, the air conditioner 34 takes in the high-temperature air of the super hot aisle SH on the rear side of the high-temperature durable equipment line HL2 as the return air RA to perform the primary temperature lowering process, and temporarily removes the air after the primary temperature lowering process to the air conditioner 35. , And the air further cooled by the air conditioner 35 is supplied into the room R as air supply SA.

  The supply air SA from each of the air conditioners 33 and 35 is not directly supplied to the cold aisle C between the standard equipment rows SL1 and SL2, but is supplied to one of the standard equipment rows SL1 and SL2 that communicates with the cold aisle C. The air is supplied to the space Z between the side end of the side wall Ra and the one side wall Ra. Therefore, the partitioning member 41 partitions between the hot aisle H, the super hot aisle SH and the space Z, and between the high-temperature endurable equipment rows HL1 and HL2 on one side of the side wall Ra.

  A cold aisle C and a hot aisle C are provided between the other side wall Rb of the room R and the other side wall Rb of the standard equipment rows SL1 and SL2 and between the rear end of the standard equipment rows SL1 and SL2 and the ceiling surface and the floor surface. A partition member 42 for partitioning the aisle H is provided. Similarly, a hot aisle is provided between the other side wall Rb of R and the other side walls Rb of the high-temperature resistant equipment rows HL1 and HL2 and between the rear end of the high-temperature resistant equipment rows HL1 and HL2 and the ceiling surface and the floor surface. A partition member 43 for partitioning the H and the super hot aisle SH is provided.

  A bypass opening 42a for a first bypass flow passage is formed between the other side wall Rb and the end of the standard device rows SL1 and SL2 on the other side wall Rb of the partition member 42. A bypass opening 43a for a second bypass flow path is formed between the other side wall Rb end of the device rows HL1 and HL2 and the other side wall Rb. Each of the bypass openings 42a and 43a is provided with a shutter with a variable opening for adjusting the flow rate and a backflow prevention mechanism.

  According to the air conditioning system 31 configured as described above, first, the two air conditioners 32 and 33 and the air conditioners 34 and 35 are cascade-connected, so that the preceding air conditioners 32 and 34 are used for pre-cooling. be able to. For example, normally, when only the air conditioners 33 and 35 are operated, and the heat generation load of the ICT equipment housed in the room R increases and the return air RA from the super hot aisle H becomes 45 ° C., If this is cooled to about 35 ° C. corresponding to the standard return air by the air conditioners 32 and 34, even if the heat load of the ICT equipment housed in the room R increases, it is possible to quickly respond. Can be. Moreover, since cold air can be supplied to the cold aisle C from both of the two air conditioners 33 and 35, if there is room in the capacity or air volume of the air conditioner, even if one of the air conditioners fails, Cooling can be continued.

  In addition, in the example of FIG. 2, since the bypass opening 42a forming the first bypass passage and the bypass opening 43a forming the second bypass passage are provided, the following measures are possible.

That is, as described above, the ICT device has a server fan for cooling therein, and is generally configured such that the rotation speed of the fan is controlled according to the amount of heat generated by the operation of the ICT device. Therefore, the air volume for each rack row varies depending on the operation status of the ICT equipment. For example, the air flow rate of the entire fan of the standard information communication device mounted on the standard device rows SL1 and SL2 is larger than the air flow rate of the entire fan of the high temperature durable information communication device mounted on the high temperature resistant device line HL1 and HL2. If it is large, an excessive amount of air is supplied to the high-temperature endurable equipment rows HL1 and HL2, so that the back pressure of the server fan increases and the server fan breaks down.

  Conversely, the air volume of the entire fan of the standard information communication device mounted on the standard device rows SL1 and SL2 is reduced by the air volume of the entire fan of the high temperature resistant information communication device mounted on the high temperature resistant device line HL1 and HL2. If it is smaller than this, the airflow to the high-temperature durable equipment rows HL1 and HL2 is insufficient, causing a failure due to overheating of the high-temperature durable information communication equipment, a shutdown for self-protection, and a backflow of hot exhaust gas even in the high-temperature durable information communication equipment. This causes problems such as the high-temperature durable information and communication equipment itself running away from heat.

  In this regard, in the air conditioning system 31 of FIG. 2, first, since the bypass opening 42 a that forms the first bypass flow path is provided, the airflow flows between the cold aisle S and the hot aisle H, and the standard equipment row SL 1, This can be bypassed and passed without passing through SL2. In addition, the airflow passes between the hot aisle H and the super hot aisle SH without passing through the high-temperature endurable equipment rows HL1 and HL2 because of having the bypass opening 43a that forms the second bypass flow path. It is possible. Therefore, it is possible to prevent a failure of the server fan, a failure due to overheating due to insufficient air volume, a shutdown, and a thermal runaway caused by the air volume fluctuation for each rack row due to the operation status of the ICT device as described above.

  Next, an air conditioning system 51 according to the third embodiment shown in FIG. 3 will be described. This air conditioning system 51 is basically an air conditioning system installed outside the room R in the air conditioning system 31 of FIG. The machines 32, 33, 34, 35 are installed at the position of the space Z in the room R. Specifically, as shown in FIG. 3, the corresponding air conditioners 32 and 34 are respectively installed at the end portions of the side walls Ra of the high-temperature resistant equipment rows HL1 and HL2, and the respective side walls Ra of the standard equipment rows SL1 and SL2. The corresponding air conditioners 33 and 35 are installed at the side ends.

  The space surrounded by the air conditioners 32 and 33, the partition member 41, and the side walls Ra constitutes a flow path P1 of the air after the temperature reduction processing by the air conditioner 32 to the air conditioner 33, and is separated from the air conditioners 34 and 35 by the partition. The space surrounded by the material 41 and the side walls Ra constitutes a flow path P2 of the air after the temperature reduction by the air conditioner 34 to the air conditioner 35. In the partition member 41, bypass openings 41a are formed in portions facing the flow paths P1 and P2, respectively. A bypass opening 41a, a shutter with a variable opening for flow adjustment, and a backflow prevention mechanism are provided. This bypass opening 41a forms a third flow path.

  According to the air conditioning system 51, the airflow properties are controlled in a loop from the outlets of the air conditioners 33 and 35 to the cold aisle C, the hot aisle H, the super hot aisle SH, and the return air intakes of the air conditioners 32 and 34. Thus, the pressure loss in the flow path can be reduced, and the transfer power of the fans of the air conditioners 32, 33, 34, 35 can be reduced. In addition, in the air conditioning system 51, in addition to the bypass openings 42a and 43a, a bypass opening 41a that communicates with the hot aisle H is provided at a portion facing the flow paths P1 and P2. In addition, it is possible to further fine-tune the bypass adjustment, and furthermore, the server fan failure due to the fluctuation of the air flow for each rack row due to the operation status of the ICT equipment, the failure due to overheating due to insufficient air flow, the shutdown, and the thermal runaway It can be prevented efficiently.

  In addition, as a device (flow rate adjustment mechanism) for adjusting the bypass air flow, a damper, an MD (motor damper), a VD (air flow adjustment damper), a balance damper, and a differential pressure damper can be exemplified as an air conditioning device for controlling the air flow. Regarding the control method, for example, when the opening degree of the bypass damper is adjusted according to the pressure difference between each space of the cold aisle C, the hot aisle H, and the super hot aisle SH, or when the automatic control is not used, for example, When a differential pressure is applied, the amount of bypass can be adjusted by installing a check damper or the like that opens according to the direction of the differential pressure. In addition, it can be proposed that the intake air temperature of the rack is measured, and even if a part of the temperature exceeds a predetermined temperature, the bypass damper is closed to increase the air volume of the air conditioner so that the cool air can flow through the rack. It is also possible to measure the power used in each rack and control the degree of opening of the bypass damper according to the magnitude of the power.

  Next, another embodiment will be described. FIG. 4 schematically shows a plane of an air conditioning system 61 according to the fourth embodiment. In this air conditioning system 61, a low-temperature air conditioner 62 and a high-temperature air conditioner 63 are provided in the room R. At the same time, the air conditioners 62 are arranged side by side in the standard equipment row SL, and the air conditioners 63 are arranged side by side in the high temperature resistant equipment row HL. In addition, the air-conditioner (cooler) 63 is configured to be flush with the high-temperature resistant equipment so that the return air suction direction and the cool air supply direction are opposite to those of the high-temperature resistant equipment. Similarly, the relationship between the air conditioner (cooler) 62 and the standard durable equipment also reverses the direction of the airflow. The air supply SA of, for example, 25 ° C. from the air conditioner 62 is supplied to the cold aisle C on the front side of the standard equipment row SL, and is used for cooling the standard information communication equipment mounted on the standard equipment row SL. Thereafter, the temperature is raised and the air exhausted to the hot aisle H between the standard equipment row SL and the high-temperature durable equipment row HL is used for cooling the high-temperature durable information communication equipment mounted on the high-temperature durable equipment row HL. . The high-temperature air used for cooling the high-temperature durable information communication device and further heated is returned from the super hot aisle SH on the rear side of the high-temperature durable device line HL to the air conditioner 63 as return air RA. .

  The high-temperature air of, for example, 45 ° C., which is taken in as the return air RA by the air conditioner 63, is cooled to, for example, about 35 ° C. in the air conditioner 63 and supplied to the hot aisle H. And is used again for cooling the high-temperature durable information and communication equipment mounted on the high-temperature durable equipment row HL. Here, the hot aisle H also functions as an air reservoir that mixes cool air exhaust. Then, the remaining part is cooled down to about 25 ° C. by the air conditioner 62 and thereafter supplied to the cold aisle C as air supply SA.

  According to this example, two types of air conditioners 62 and 63 are arranged in a cascade in the room, and operation is guaranteed in the standard temperature range as in the example of FIG. 1 without setting a special return air path or the like. Even if the room R accommodates both the standard information communication device and the high-temperature durable information communication device whose operation is guaranteed even in a temperature range higher than the standard temperature range, these ICT devices are efficiently cooled. Can be. The air volume can be controlled on the standard temperature side and the high temperature side, respectively, and the required air volume is fixed, and the air volumes that are required by the standard equipment row SL and the high-temperature resistant equipment row HL are supplied by the air conditioners 62 and 63, respectively. If this is the case, the bypass flow path can be dispensed with.

FIG. 5 schematically shows a plane of an air conditioning system 71 according to a fifth embodiment. This air conditioning system 71 is different from the air conditioning system 61 of FIG. On the side, a wind direction plate 72 for guiding the conditioned air from the center of the hot aisle H to the front side (intake side) of the high-temperature resistant equipment row HL is provided, and air from the center of the hot aisle H is supplied to the inlet of the air conditioner 62. A wind direction plate 73 that guides to the side is provided.
This wind direction plate spreads as approaching the standard service equipment row SL and the high temperature service equipment row HL, and ends of the discharge surfaces and suction surfaces of the air conditioners (coolers) 62 and 63 on the opposite side to the device rows SL and HL. It is configured so as to narrow the airflow toward.

  According to the air conditioning system 71, the conditioned air from the air conditioner 63 is more positively combined with the exhaust from the standard equipment row SL than in the example of FIG. Will be introduced.

  The air conditioning system 81 according to the sixth embodiment shown in FIG. 6 includes a large temperature difference (A) between the super hot aisle SH on the rear side of the high-temperature durable equipment row HL and the air conditioner 82 that takes in and processes the return air RA. For example, a coil 82a and a fan 82b that can be cooled at (ΔT = 20 ° C.) are mounted. Instead of a low-temperature air conditioner that takes in and processes the air of the hot aisle H, a device 83 equipped with only a fan 83a is arranged in the standard device line SL next to the standard information communication device. That is, the high-temperature air of 45 ° C. of the super hot aisle SH is cooled to, for example, about 25 ° C. by the coil 82a of the air conditioner 82, and is supplied to the cold aisle C as the air supply SA through the hot aisle H by the fans 82b and 83b. Is done.

  According to the air conditioning system 81, only one air conditioner is sufficient, and the air conditioner itself operates at a large temperature difference, so that the efficiency is high.

  The air conditioning system 91 according to the seventh embodiment shown in FIG. 7 has a large temperature difference from the super hot aisle SH on the rear side of the high-temperature durable equipment row HL to the air conditioner 92 that takes in and processes the return air RA. Only the coolable coil 92a is mounted. The space of the hot aisle H (the space between the standard equipment row SL and the high-temperature resistant equipment row HL) is partitioned by a partition member 93, and a fan 94 is provided in the partition member 93. In other words, in the air conditioning system 81 of FIG. 6, only the fan 82b of the air conditioner 82 is provided outside the device.

  According to the air conditioning system 91, the air whose temperature has been reduced by the coil 92a that can be cooled with a large temperature difference can be supplied to the hot aisle H more actively than the air conditioning system 81 of FIG. In such a case, the fan 83a of the device 83 may be moved to a partition member 95 that partitions the space of the cold aisle C, as indicated by a broken line in the figure. In this case as well, as in the examples of FIGS. 4 to 6, the air conditioner 62 on the side of the standard equipment row SL depends on the operation status of the standard equipment row SL (for example, the number of rotations of the fan of the equipment itself) and also has a high temperature durability. By controlling the air volume of the air conditioner 63 on the equipment row HL side in accordance with the operation status of the high-temperature resistant equipment row HL, it is possible to balance the air flow without providing a bypass flow path.

  The air conditioning system 101 according to the eighth embodiment shown in FIG. 8 includes the air conditioners 62 and 63 in the standard equipment row SL and the high-temperature resistant equipment row HL in the room R of the air conditioning system 61 in FIG. Are formed with bypass passages 102 and 103 on the opposite sides, respectively. The configurations of the bypass passages 102 and 103 are the same as those of the air conditioning system 31 of FIG. 2 described above. Of course, only one of the bypass passages 102 or 103 may be provided.

  According to the air conditioning system 101, it is necessary to unbalance the total airflow of the air conditioners 62 and 63, the standard information communication device mounted on the standard device row SL, and the high temperature service information communication device mounted on the high temperature service device row HL, respectively. Can be resolved according to

The air-conditioning system 101 according to the ninth embodiment shown in FIG. 9 is different from the air-conditioning system 61 in FIG. 4 in that a low-temperature air conditioner 62 arranged in the standard equipment row SL and a high-temperature durable equipment row HL. Without facing the placed high-temperature air conditioner 63,
A high-temperature air conditioner 63 is arranged on the opposite side of the low-temperature air conditioner 62 in the room R.

  According to the air conditioning system 111, the air after the cooling of the standard equipment row SL and the high-temperature air conditioner 63 are processed in the hot aisle H without using the wind direction plates 72 and 73 as shown in FIG. And the mixed air, and the mixed air can be preferentially supplied to the high-temperature resistant equipment line HL.

  INDUSTRIAL APPLICABILITY The present invention is useful in a room where two types of ICT equipment such as a data center and ICT equipment such as a server coexist with a standard ICT equipment and a high-temperature resistant ICT equipment.

1, 31, 51, 61, 71, 81, 91, 101 Air conditioning system 2, 32, 33, 34, 35 Air conditioner 4, 5, 41, 42, 43, 93, 95 Partitioning material 10, 20 Rack 41a, 42a , 43a Bypass opening C Cold aisle H Hot aisle HL, HL1, HL2 High temperature resistant equipment array P1, P2 Flow path R room RA Return air Ra, Rb Side wall SA Supply SH Super hot aisle SL, SL1, SL2 Standard equipment array

Claims (4)

A standard information communication device having an intake surface on the front side, an exhaust surface on the back side, and operation guaranteed in a standard temperature range, and an intake surface on the front side, an exhaust surface on the back side, and the standard temperature range. And a high-temperature durable information communication device whose operation is guaranteed to a higher temperature range, and an air conditioning system for a room accommodating the same,
The standard information communication device is a plurality of standard device rows arranged with their fronts aligned,
The high-temperature-resistant information communication device forms a high-temperature-resistant device row in which a plurality of high-temperature resistant communication devices are arranged with their front surfaces aligned.
The front side space of the standard equipment row constitutes a cold aisle to which low-temperature air is supplied,
The back side space of the standard equipment row constitutes a hot aisle from which exhaust air from the standard equipment row is exhausted, the front side of the high temperature durable equipment row faces the hot aisle, and the rear side of the high temperature durable equipment row. The space constitutes a super hot aisle from which exhaust gas from the high temperature resistant equipment row is discharged,
The standard device row, having a bypass flow path to bypass the high temperature resistant equipment row,
The bypass flow path is a first bypass flow path that introduces the low-temperature air into the hot aisle without passing through the standard equipment row from the cold aisle, and the high-temperature resistant equipment row from the hot aisle. A second bypass flow path for introducing the air of the hot aisle to the super hot aisle without passing through;
The first bypass flow path is formed in a part of the standard device row in a longitudinal direction,
The flow rate passing through the first bypass flow path is smaller than the flow rate passing through the standard device row,
The second bypass flow path is formed in a part of the high-temperature resistant equipment row in a longitudinal direction,
The flow rate passing through the second bypass flow path is smaller than the flow rate passing through the high-temperature resistant equipment row,
The cold aisle and the hot aisle, and the hot aisle and the super hot aisle are separated by a partition member, and the first bypass passage has a flow rate according to a pressure difference between the hot aisle and the cold aisle. A flow control mechanism for controlling the
The second bypass flow path is provided with a flow rate adjusting mechanism that controls a flow rate in accordance with a pressure difference between the super hot aisle and the hot aisle . Air conditioning system. The air conditioning system for a room accommodating information communication equipment according to claim 1, wherein the air of the super hot aisle is used for preheating a heat source of an air conditioner or make-up water of a boiler. The air conditioning system for a room accommodating information communication equipment according to claim 1, wherein the standard equipment row and the high-temperature resistant equipment row are arranged in parallel in a plan view. The cold aisle, the standard equipment row, such that the flow direction of air flowing from the cold aisle to the super hot aisle through the standard equipment row, the hot aisle, the high-temperature resistant equipment row, and to the super hot aisle is one direction. The air conditioning system for a room accommodating information and communication equipment according to any one of claims 1 to 3, wherein the hot aisle, the high-temperature durable equipment row, and the super hot aisle are arranged.

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