JP6535445B2 - Humidity control air conditioning system using exhaust heat of information communication equipment and humidity control air conditioning method - Google Patents

Description

The present invention relates to an air conditioning system and a humidity control air conditioning method that use exhaust heat of information communication devices with heat generation such as electric and communication devices and servers for dehumidification and humidification in air conditioning such as office working rooms.

  For example, the server needs to avoid temperature rise to ensure operation. Therefore, a small cooling fan, also called a server fan, is provided inside, and as shown in Patent Document 1, cold air is drawn from the front side of the device, and the heated air is exhausted to the rear side. It has become. Also, in many cases, the servers are mounted in multiple stages in the rack, and in the server room, the cold aisle formed by facing the air intake surface of the rack and the exhaust surface of the rack are faced in order to improve the efficiency of air conditioning. The hot aisles formed are arranged in order. More recently, when a standard server guaranteed to operate in a standard temperature range of about 15 ° C. to 27 ° C. and a high temperature resistant server guaranteed to operate in a temperature range higher than 35 ° C. We also propose a layout in which the cold aisle facing the air supply surface, the hot aisle facing the exhaust surface of the standard server and the air supply surface of the high temperature resistant server, and the super hot aisle facing the exhaust surface of the high temperature resistant server are arranged in parallel. It is done.

  On the other hand, as disclosed in, for example, Patent Document 2, an operating method is known in which outside air is dehumidified using a desiccant rotor and air is supplied into the room. In order to perform regeneration of the desiccant rotor, in the operation method of Patent Document 2, the return air from the room is heated by heat pump and passed through the regeneration region of the desiccant rotor. Further, Patent Document 3 uses the exhaust heat of cogeneration for regeneration of a desiccant air conditioner, and cool air conditioned by a desiccant air conditioner having a desiccant, a heat removal device, and a humidity control, as air in a circulation system of a facility. Systems to be utilized are disclosed. Patent Documents 4 and 5 disclose systems for regenerating the desiccant rotor using exhaust heat of a boiler or the like. Furthermore, the applicant of the present invention also discloses, in Patent Document 6, an air conditioner using condensation heat of a heat pump for cooling outside air as a regenerative heat source of a rotor.

JP, 2010-71482, A JP 2012-172880 A Japanese Patent Application Laid-Open No. 2002-115867 JP, 2002-276998, A Unexamined-Japanese-Patent No. 2007-298192 Patent No. 2558552

  For example, in a data center, rooms for IT engineers and administrators are provided adjacent to server rooms. Also, in the office building, server rooms attached to places and floors near office work spaces are increasing. However, conventionally, there is no example that effectively utilizes the exhaust heat of information communication equipment for air conditioning in the adjacent air conditioning space, and the application of exhaust heat (thermal heat) in data centers includes cultivation and cultivation of plants, preheating for heating and hot water supply The regeneration of the adsorbent of the adsorption refrigerator has only been proposed.

  This invention is made in view of this point, and an object of this invention is to utilize the exhaust heat which arose in information communication apparatuses, such as a server, for dehumidification and humidification in air conditioning, such as an office work room.

In order to achieve the above object, according to the present invention, it is a humidity control air conditioning system for supplying air conditioned and processed using a desiccant rotor to an air conditioning space, wherein the desiccant rotor is a space different from the air conditioning space Is rotatably disposed across the flow path of the air heated by the exhaust heat of the information communication device housed in the air flow path and the flow passage of the air supplied to the air-conditioned space, and the information communication device has a standard temperature The desiccant rotor includes the standard information communication device whose operation is guaranteed in the region and the high temperature endurance information communication device whose operation is guaranteed up to the temperature range higher than the standard temperature region, and the air heated by the exhaust heat of the high temperature endurance information communication device There the recycled air that is dehumidified processed by the reproduction processing has been the desiccant rotor is supply to the air-conditioned space, the exhaust of high temperature the temperature has been raised by the high-temperature service information communication device, the deci After exchanging heat with air for reproducing processing Ntorota, characterized in that it is returned to the a cold aisle or the discharge side is a standard information suction side of the communication device hot aisle, tone utilizing the exhaust heat of the information communication device A wet air conditioning system is provided.

  According to the present invention, the exhaust heat of the information communication device can be used to regenerate the desiccant rotor, and the regenerated desiccant can dehumidify air such as the outside air and supply the air to the air-conditioned space. .

  In this humidity control air conditioning system, a cooler for cooling the air supplied to the air conditioning space is provided downstream of the desiccant rotor in the flow path of the air supplied to the air conditioning space. good. For example, in summer and the like, a dehumidifying and cooling operation can be performed by cooling the air dehumidified by the desiccant rotor with a cooler and supplying the air to the air-conditioned space.

The heat exchanger also includes a heat exchanger that raises the temperature of exhaust air from the air-conditioned space by the exhaust heat of the high-temperature durable information communication device, and the desiccant rotor regenerates the exhaust air from the air-conditioned space heated by the heat exchanger. It may be processed.

  The heat exchanger further includes a heat exchanger for raising the temperature of the outside air by the exhaust heat of the information communication device, and a flow path for supplying the outside air heated by the heat exchanger to the air conditioning space without passing through the desiccant rotor. A humidifier may be provided in the flow path for supplying the air-conditioned space without passing through the desiccant rotor. For example, in winter, etc., the air conditioner space is humidified by raising the temperature of the outside air with a heat exchanger using exhaust heat of the information communication device and humidifying the temperature-raising outside air with a humidifier and supplying it to the air-conditioned space It becomes possible to carry out heating operation.

Further, according to the present invention, there is provided a humidity control and air conditioning method for supplying air conditioned and processed using a desiccant rotor to an air conditioning space, wherein the desiccant rotor is stored in a space different from the air conditioning space. The information communication device is rotatably arranged across the flow path of the air heated by the exhaust heat of the device and the flow path of the air supplied to the air-conditioned space, and the operation of the information communication device is guaranteed in the standard temperature range It consists of a standard information communication device and a high temperature durability information communication device whose operation is guaranteed up to a temperature range higher than the standard temperature range, and the desiccant rotor is regenerated with air heated by the exhaust heat of the high temperature durability information communication device. In the flow path of air supplied to the air conditioned space, the air dehumidified by the regenerated desiccant is cooled downstream of the desiccant rotor and supplied to the air conditioned space. Dehumidifying and cooling operation, and in the flow path for supplying the outside air to the air-conditioned space without passing through the desiccant rotor, the outside air heated by the air heated by the exhaust heat of the high temperature durability information communication device is humidified to heat the air conditioning A humidity control and air conditioning method using exhaust heat of an information communication device is provided, characterized in that a humidifying and heating operation for supplying air to a space is performed.

  According to the present invention, it becomes possible to dehumidify or humidify the living room or office working space provided adjacent to the server room using the exhaust heat of the information communication device.

It is explanatory drawing of the humidity control air conditioning system comprised so that the air exhausted from air-conditioning space was heated up with the exhaust_gas | exhaustion of a server, and a desiccant rotor was regenerated. It is explanatory drawing of the humidity control air conditioning system concerning embodiment of this invention which can perform both dehumidification cooling operation and humidification heating operation of air-conditioning space. It is explanatory drawing of the humidity control air conditioning system which combined the heating / cooling operation by heat pump in addition to the exhaust heat utilization of a server room, and has shown the state of the cooling dehumidification operation. It is explanatory drawing of the humidity control air conditioning system which combined the heating / cooling operation by heat pump in addition to the exhaust heat utilization of a server room, and has shown the state of heating humidification operation. It is explanatory drawing of the modification provided with the electric power generation function.

  Hereinafter, a humidity control air conditioning system according to an embodiment of the present invention will be described with reference to the drawings. In the present specification and the drawings, components having substantially the same functional configuration will be assigned the same reference numerals and redundant description will be omitted.

  First, the humidity control air conditioning system A shown in FIG. 1 raises the temperature of the exhaust EA from the air conditioning space 3 by the exhaust exhausted from the server room 1 containing the server 10 as an example of the information communication device, and raises the temperature An embodiment of the dehumidifying and cooling operation of the air conditioning space 3 by regenerating the desiccant rotor 30 included in the air conditioner 2 by EA, cooling the air dehumidified by the desiccant rotor 30 and supplying the air to the air conditioning space 3 It is illustrated. The air conditioning space 3 is a room of an IT engineer or a manager provided adjacent to the server room 1, an office work space or the like.

  In a server room 1 which is a space different from the air-conditioned space 3, racks 11 on which servers 10 are mounted in multiple stages are disposed. Each server 10 is arranged with its air supply surface directed to the cold aisle 12 in the server room 1 and its exhaust surface directed to the hot aisle 13 in the server room 1. Each server 10 is internally provided with a small fan for cooling called a server fan, and cold air of, for example, 25 ° C. is drawn from the cold aisle 12 side, and the temperature is increased due to the heat load of the server 10 Exhaust air at 50 ° C. is exhausted to the hot aisle 13 side. A cooler 14 such as a packaged air conditioner is installed outside the server room 1, for example. The high temperature exhaust air from the hot aisle 13 is taken in, cooled by a cold water coil or the like, and supplied to the cold aisle 12.

  A heat exchanger 15 (sensible heat exchanger) is provided between the server room 1 and the air conditioner 2 to exchange heat between the exhaust air EA from the air conditioning space 3 and the high temperature exhaust taken from the hot aisle 13. The high temperature exhaust taken out from the hot aisle 13 is introduced into the heat exchanger 15 through the take-out duct 17 by the power of the fan 16 and heat-exchanged in the heat exchanger 15, and then the cold air through the return duct 18 It is returned to 12.

  The air conditioner 2 includes a flow path 22 through which the exhaust EA from the air conditioning space 3 is introduced by the power of the fan 21 through the exhaust duct 20 and the heat exchanger 15, and two flow paths 23 through which the outside air OA is introduced, 24 are provided in parallel. In this embodiment, the flow path 22 is a flow path of the air heated by the exhaust heat of the information communication device (server 10). Further, of the two flow paths 23 and 24 into which the outside air OA is introduced, one flow path 23 is a flow path of air that dehumidifies and cools the outside air OA and supplies the air to the air conditioning space 3. The flow path 24 is a flow path for passing the open air OA for heat exchange. One flow path 23 is connected to the air conditioning space 3 via an air supply duct 26 having a fan 25. The other flow path 24 is connected to an exhaust port or the like (not shown) via an exhaust duct 28 having a fan 27.

  Desiccant is contained in the flow path 22 where the air heated by the high temperature exhaust from the hot aisle 13 (the exhaust EA from the air conditioned space 3) is introduced and in the flow path 23 where the outside air OA is introduced. A retained, breathable, cylindrical desiccant rotor 30 is rotatably disposed across. One half of the desiccant rotor 30 is disposed in the flow passage 22, the other half is disposed in the flow passage 23, and rotation of the desiccant rotor 30 causes rotation of the desiccant rotor 30 in the side surface thereof (perpendicular to the central axis in the cylindrical shaped desiccant rotor 30). ) Alternately move the flow path 22 and the flow path 23.

  Further, the first cooler 31 is disposed across the two flow paths 23 and 24 into which the outside air OA is introduced. The first cooler 31 is, for example, a sensible heat exchanger or a total heat exchanger, and may be either a rotary type or a fixed type. The outside air OA introduced into one of the flow paths 23 reaches a high temperature when passing through the desiccant rotor 30 and dehumidified, but then the outside air introduced into the other flow path 24 by the first cooler 31 It exchanges heat with OA and is cooled.

  Furthermore, a second cooler 32 is disposed in one flow passage 23. The second cooler 32 is, for example, a cooler provided with a cooling water coil or a direct expansion coil. The second cooler 32 may incorporate cooling means other than the air conditioner 2. Further, as the second cooler 32, a small air conditioner for circulating indoor air, such as an existing fan coil, can also be used. The outside air OA introduced into one of the flow paths 23 is finally cooled by the second cooler 32 and is supplied to the air conditioning space 3 through the air supply duct 26 by the power of the fan 25. In addition to the desiccant rotor 30, the air conditioner 2 can be provided with a cooler for reducing the temperature by adsorption with external air and precooling it as necessary.

In the humidity control air conditioning system A configured as described above, the surplus (not circulated) exhaust EA discharged from the air conditioning space 3 passes through the heat exchanger 15 through the exhaust duct 20 by the power of the fan 21, It will be in the state introduced into channel 22.

On the other hand, the exhaust gas at a high temperature of, for example, 40 ° C. raised by the thermal load of the server 10 is taken out from the hot aisle 13 of the server chamber 1 through the extraction duct 17 through the duct 17 by the power of the fan 16 and introduced into the heat exchanger 15 . Then, in the heat exchanger 15, heat exchange between the high temperature exhaust taken out from the hot aisle 13 and the exhaust EA from the air conditioning space 3 is performed, and the exhaust EA from the air conditioning space 3 is heated. Thus, the exhaust EA from the air-conditioned space 3 which has become high temperature is introduced into the flow path 22 of the air conditioner 2 and in the flow path 22 moisture is removed and released from the desiccant rotor 30 by the high temperature exhaust EA. Reproduction processing is performed. The side surface of the desiccant rotor 30 thus regenerated is sequentially moved to the flow path 23 by the rotation of the desiccant rotor 30.

  Then, in the flow path 23 of the air conditioner 2, the outside air OA of, for example, 33 ° C., 22 g / kg (DA) introduced by the power of the fan 25 passes through the side surface of the desiccant rotor 30 subjected to the regeneration process. The moisture in the inside is adsorbed by the desiccant rotor 30, and the dehumidifying process is performed. Thus, the outside air OA dehumidified by the desiccant rotor 30 temporarily rises in temperature when passing through the desiccant rotor 30, but then the outside air OA introduced into the other flow path 24 by the first cooler 31 and the heat It is replaced and cooled (pre-cooled), and further cooled by the second cooler 32 to become 33 ° C. (about the same as the outside air OA), 13 g / kg (DA) of air supply SA, for example. It is supplied to the air conditioning space 3 via the air conditioner. In addition, the air (exhaust taken out from the hot aisle 13) which became low temperature by raising the temperature of the exhaust EA from the air-conditioned space in the heat exchanger 15 passes through the return duct 18 in the cold state and passes cold aisle. It is returned to 12. By thus reducing the temperature of the exhaust gas extracted from the hot aisle 13 and returning it to the cold aisle 12, the cooling load on the server room 1 can also be reduced. Further, the air (open air OA) introduced to the other flow path 24 and used to cool the first cooler 31 becomes the exhaust EA and is discharged from the exhaust duct 28 to the outside.

  Therefore, according to the humidity control air conditioning system A of this embodiment, the desiccant rotor 30 is regenerated by using the exhaust heat from the server 10 stored in the server room 1 in summer, for example. By cooling the air that has been dehumidified and supplying it to the air-conditioned space 3, the air-conditioned space 3, such as a room of an IT engineer or manager provided adjacent to the server room 1, an office work space, can be dehumidified and cooled. Energy saving is achieved.

  Next, the humidity control air conditioning system B shown in FIG. 2 performs a regeneration process on the desiccant rotor 75 provided in the air conditioner 2 using the air that is heated by exchanging heat with the exhaust gas discharged from the server room 1 and is then used as the desiccant rotor. An embodiment in which the air conditioning space 3 is subjected to the dehumidifying and cooling operation is illustrated by cooling the air dehumidified by 75 and supplying the air to the air conditioning space 3. In addition, the humidity control and air conditioning system B according to this embodiment can also perform the humidification and heating operation of the air conditioning space 3.

  In this embodiment, the server room 1 is provided with a standard server rack 41 in which a standard server 40 guaranteed to operate in a standard temperature range of about 15 ° C. to 27 ° C. is mounted in multiple stages, and a temperature higher than that, 35 ° C. The high temperature resistant server racks 43 on which the high temperature resistant servers 42 whose operation is guaranteed even in the region are mounted in multiple stages are arranged in parallel at intervals. Each standard server 40 is provided with a small fan for cooling called a server fan, and for example, a cold air of, for example, 25 ° C. is drawn from the cold aisle 45 side, and the temperature is increased by the thermal load of the standard server 40, for example 35 ° C. The exhaust of the air is discharged to the hot aisle 46 side. Similarly, inside each high temperature resistant server 42 is also provided a small fan for cooling called a server fan, and for example 35 ° C. cool air (exhaust of standard server 40) is sucked from the hot aisle 46 side, the high temperature resistant server Exhaust gas heated at a heat load of 42, for example, 45 ° C. is discharged to the super hot aisle 47 side. That is, the exhaust gas including the exhaust heat of the first stage server row (standard server 40) is used as the cooling medium of the second stage server row (high temperature resistant server 42).

  For example, coolers 48 and 49 such as a packaged air conditioner are installed outside the server room 1, and one cooler 48 takes in air from the hot aisle 46 and cools it with a cold water coil etc. To supply. The other cooler 49 takes in air from the super hot aisle 47, cools it with a chilled water coil or the like, and supplies it to the hot aisle 46.

  Between the server room 1 and the air conditioner 2, there is provided a heat exchanger 50 for exchanging heat between the exhaust air EA from the air conditioning space 2 and the high temperature exhaust taken from the super hot aisle 47. The high temperature exhaust taken out of the super hot aisle 47 is introduced into the heat exchanger 50 through the take-out duct 52 by the power of the fan 51, and after heat exchange in the heat exchanger 50, the hot aisle passes through the return duct 53. It is returned to 46 or returned to the cold aisle 45 through the return duct 54. The return duct 53 is provided with an on-off valve 53a, and the return duct 54 is provided with an on-off valve 54a. When the temperature after heat exchange with the heat exchanger 50 is high, the on-off valve 53a is opened, the on-off valve 54a is closed, and the exhaust gas after heat exchange is returned to the hot aisle 46. When the temperature after heat exchange with the heat exchanger 50 is low, the on-off valve 54 a is opened, the on-off valve 53 a is closed, and the exhaust gas after heat exchange is returned to the cold aisle 45. For example, if the temperature after heat exchange in the heat exchanger 50 is 30 to 35 ° C., the exhaust gas after heat exchange is returned to the hot aisle 46, and if it is 20 to 25 ° C., the exhaust gas after heat exchange is cold air It is returned to 45.

  The air conditioner 2 is provided in parallel with a flow path 57 in which the exhaust EA from the air conditioning space 3 is introduced by the power of the fan 56 via the exhaust duct 55 and two flow paths 58 and 59 in which the outside air OA is introduced. It is done. In addition, it is also possible to introduce the exhaust EA from the air conditioning space 3 into the flow path 59. In this embodiment, the flow path 57 is a flow path of air heated by the exhaust heat of the information communication device (server 10). Further, of the two flow paths 58 and 59 into which the outside air OA is introduced, one flow path 58 is a flow path of air that dehumidifies and cools the outside air OA and supplies the air to the air conditioning space 3. The flow path 59 is a flow path of air for humidifying the outside air OA heated by the heat exchanger 50 and supplying the air to the air-conditioned space 3. One flow passage 58 is connected to the air conditioning space 3 via an air supply duct 61 having a fan 60. Air (outside air OA) heated by the heat exchanger 50 is introduced to the other flow path 59 via the outside air humidifying duct 62 branched off from the return air duct 55 on the downstream side of the fan 56. It has become so. As described later, the flow path is opened and closed by the open / close damper 63 installed in the outside air humidification duct 62 and the open / close damper 64 installed downstream of the branch point of the outside air humidification duct 62 in the exhaust duct 55. It is selectively switched between the state of introducing air (open air OA) into the air inlet port 59 and the state of introducing the exhaust air EA into the flow path 57. It is also possible to switch to a state in which the exhaust EA is introduced into the flow passage 59.

  Inside the other flow path 59, a humidifier 65 of, for example, a dripping type or a spray type is installed, and the air humidified in the flow path 59 (open air OA) is supplied via the air supply duct 66. The air conditioning space 3 is supplied. An outside air introduction duct 70 is joined between the air conditioning space 3 and the heat exchanger 50 in the exhaust duct 55 described above. As described later, the open / close damper 71 installed in the outside air introduction duct 70 and the open / close damper 72 installed upstream of the junction of the outside air introduction duct 70 in the exhaust duct 55 open / close the open air introduction duct 70. From the air conditioning space 3 to a state in which air (return air RA) is introduced from the air conditioning space 3 to the heat exchanger 50.

  In the flow path 57 and the flow path 58, an air-permeable cylindrical desiccant rotor 75 holding a desiccant is rotatably disposed so as to straddle it. One half of the desiccant rotor 75 is disposed in the flow path 57, and the other half is disposed in the flow path 58, and the rotation of the desiccant rotor 75 causes its side surface (distribution surface: perpendicular to the central axis in the cylindrical shaped desiccant rotor 75). Of the flow path 57 and the flow path 58 alternately.

  Furthermore, a cooler 76 is disposed in the flow path 58. The cooler 76 is, for example, a cooler provided with a cooling water coil or a direct expansion coil. The outside air OA introduced into the flow path 58 is dehumidified by the desiccant rotor 75 and then cooled by the cooler 76 and is supplied to the air conditioning space 3 by the power of the fan 60 through the air supply duct 61.

  In the humidity control air conditioning system B configured as described above, for example, when performing a dehumidifying and cooling operation in summer, the open / close dampers 64 and 72 provided in the exhaust duct 55 are both opened and provided in the outside air humidifying duct 62 Both the open / close damper 63 and the open / close damper 71 provided in the outside air introduction duct 70 are closed. Thus, the exhaust EA from the air-conditioned space passes through the heat exchanger 50 through the exhaust duct 55 by the power of the fan 56 and is introduced into the flow path 57. On the other hand, by the power of the fan 51, the high temperature exhaust gas taken out of the super hot aisle 47 is taken out through the takeout duct 52 and introduced into the heat exchanger 50. Then, in the heat exchanger 50, heat exchange is performed between the high temperature exhaust taken out from the super hot aisle 47 and the exhaust EA from the air conditioned space, and the exhaust EA from the air conditioned space is heated. Thus, the exhaust EA from the air-conditioned space, which has become high temperature, is introduced into the flow path 57 of the air conditioner 2. In the flow path 57, the high temperature exhaust EA removes and discharges moisture from the desiccant rotor 75, and regenerates the desiccant rotor 75. Processing is performed. The side surface of the desiccant rotor 75 thus regenerated is sequentially moved to the flow path 58 by the rotation of the desiccant rotor 75. In the heat exchanger 50, the temperature of the air (exhaust extracted from the super hot aisle 47) which has become low temperature by raising the temperature of the exhaust EA from the air-conditioned space is lowered, and the temperature is reduced according to the temperature It is returned to the hot aisle 46 or the cold aisle 45. By thus reducing the temperature of the exhaust gas taken out of the super hot aisle 47 and returning it to the hot aisle 46 or the cold aisle 45, the cooling load on the server room 1 can also be reduced.

  Then, in the flow path 58 of the air conditioner 2, when the outside air OA introduced by the motive power of the fan 60 passes through the side surface of the desiccant rotor 75 subjected to the regeneration process, the moisture in the outside air OA is adsorbed on the desiccant rotor 75 and dehumidified. Processing is performed. Thus, the outside air OA dehumidified by the desiccant rotor 75 is further cooled by the cooler 76 to be the air supply SA of a desired temperature, and is supplied to the air-conditioned space 3 through the air supply duct 61. The air introduced into the flow path 57 of the air conditioner 2 and used for the regeneration process of the desiccant rotor 75 (exhaust EA from the air conditioned space) is discharged to the outside.

  Thus, for example, in summer, etc., the desiccant rotor 75 is regenerated by the exhaust EA from the air-conditioned space, which is heated using exhaust heat emitted from the super hot aisle 47 of the server room 1. By cooling the dehumidified air with the cooler 76 and supplying the air to the air-conditioned space 3, the air-conditioned space 3 such as an IT engineer's office or a manager's room provided adjacent to the server room 1, an office work space, etc. Dehumidifying and cooling operation is possible, and energy saving is achieved.

  Further, in the humidity control and air conditioning system B, for example, when the humidifying and heating operation is performed in winter, the open / close dampers 64 and 72 provided in the exhaust duct 55 are both closed and the open / close damper 63 provided in the outside air humidification duct 62 The open / close damper 71 provided in the outside air introduction duct 70 is open. In this manner, the outside air OA is introduced from the outside air introduction duct 70 to the heat exchanger 50 by the power of the fan 56, and the outside air OA passing through the heat exchanger 50 is introduced into the flow path 59 through the outside air humidification duct 62. It becomes. On the other hand, by the power of the fan 51, the high temperature exhaust gas taken out of the super hot aisle 47 is taken out through the takeout duct 52 and introduced into the heat exchanger 50. Then, in the heat exchanger 50, the heat exchange between the high temperature exhaust taken out from the super hot aisle 47 and the outside air OA is performed, and the outside air OA is heated. The outside air OA thus heated to a high temperature is introduced into the flow path 59 of the air conditioner 2, and the air humidified by the humidifier 65 (outside air OA) in the flow path 59 becomes the air supply SA, and the air conditioning space via the air supply duct 66. It is supplied to 3.

  Thus, for example, in winter, etc., the exhaust heat emitted from the super hot aisle 47 of the server room 1 is used to raise the temperature of the outside air, and the server 65 is humidified by the humidifier 65 and supplied to the air conditioning space 3. The air conditioning space 3 such as a room of an IT engineer or a manager provided adjacent to the room 1 and an office work space can be operated by humidification and heating, thereby achieving energy saving. Thus, it is possible to perform efficient air conditioning by utilizing the exhaust heat of the server room 1 for dehumidifying and humidifying the air conditioning space 3 throughout the year.

  Next, a humidity control air conditioning system C shown in FIGS. 3 and 4 exemplifies an embodiment in which an air conditioning operation by a heat pump is combined with the exhaust heat utilization of the server room 1.

  In the server room 1, a rack 81 on which servers 80 are mounted in multiple stages is disposed. Each server 80 is arranged with its air supply surface directed to the cold aisle 82 in the server room 1 and its exhaust surface directed to the hot aisle 83 in the server room 1. Each server 80 is internally provided with a small fan for cooling called a server fan, and cold air of, for example, 25 ° C. is drawn in from the cold aisle 82 side, and the temperature is increased due to the heat load of the server 80 Exhaust air at 50 ° C. is exhausted to the hot aisle 83 side. A cooler 84 such as a packaged air conditioner is installed outside the server room 1, and the exhaust air from the hot aisle 83 is taken in, cooled by a cold water coil or the like, and supplied to the cold aisle 82.

  A heat exchanger 85 (sensible heat exchanger) is provided between the server room 1 and the air conditioner 2 to exchange heat between the exhaust air EA from the air conditioning space 3 and the high temperature exhaust taken from the hot aisle 8. The high temperature exhaust taken out of the hot aisle 83 is introduced into the heat exchanger 85 through the extraction duct 87 by the power of the fan 86, and after heat exchange in the heat exchanger 85, the cold aisle through the return duct 88 It is returned to 82.

  In the air conditioner 2, a flow path 92 into which exhaust EA from the air conditioning space 3 is introduced by the power of the fan 91 through the exhaust duct 90 and the heat exchanger 85, and a flow path 93 into which the outside air OA is introduced. Are provided in parallel. In this embodiment, the flow passage 92 is a flow passage of air heated by the exhaust heat of the information communication device (server 10). Further, the flow path 93 into which the outside air OA is introduced is a flow path of air that dehumidifies and cools the outside air OA and supplies the air to the air-conditioned space 3. The flow path 93 is connected to the air conditioning space 3 via an air supply duct 96 having a fan 95.

  In the flow path 92 and the flow path 93, an air-permeable cylindrical desiccant rotor 100 holding a desiccant is rotatably disposed so as to straddle it. One half of the desiccant rotor 100 is disposed in the flow path 92, and the other half is disposed in the flow path 93, and the rotation of the desiccant rotor 100 causes rotation of the desiccant rotor 100 at its side (perpendicular to the central axis of the cylindrical desiccant rotor 100). Of the flow path 92 and the flow path 93 alternately.

  Further, the air conditioner 2 is provided with a heat pump 105. The heat pump 105 is provided with a four-way valve 106 having four inlets and outlets P1, P2, P3 and P4. As shown in FIG. 3, in the dehumidifying and cooling operation state, the four-way valve 106 is connected to the inlet / outlet P1 and the inlet / outlet P2, and connected to the inlet / outlet P3 and the inlet / outlet P4. As shown in FIG. 4, in the state of the humidifying and heating operation, the four-way valve 106 is connected to the inlet / outlet P1 and the inlet / outlet P4, and connected to the inlet / outlet P2 and the inlet / outlet P3. A first flow passage 107 for circulating the refrigerant of the heat pump 105 is connected to the inlet / outlet P1 and the inlet / outlet P3 of the four-way valve 106, and a second flow passage 108 for circulating the refrigerant of the heat pump 105 to the inlet / outlet P2 and the inlet / outlet P4. Is connected.

  In the first flow path 107 connecting the inlet / outlet P1 and the inlet / outlet P3 of the four-way valve 106, a precool evaporator 110, an expansion valve 111, and a condenser 112 are provided in order from the inlet / outlet P1 toward the inlet / outlet P3. There is. The pre-cool evaporator 110 is disposed upstream of the desiccant rotor 100 in the flow path 93. The condenser 112 is disposed upstream of the desiccant rotor 100 in the flow path 92.

  In the second flow path 108 connecting the inlet / outlet P2 and the inlet / outlet P4 of the four-way valve 106, the evaporator 115, the evaporator 116 for regeneration heat source, and the compressor 117 are provided in order from the inlet / outlet P2 toward the inlet / outlet P4. ing. The evaporator 115 is disposed downstream of the desiccant rotor 100 in the flow path 93. The regenerative heat source evaporator 116 is supplied with thermal source water heated by a thermal source device (for example, a boiler) separate from the refrigeration cycle of the heat pump 105, and in the regenerative heat source evaporator 116, the heat pump 105 is The refrigerant is heated and evaporated. The regenerative heat source evaporator 116 is disposed between the evaporator 115 and the compressor 117.

  An aftercool cooler 118 is disposed between the desiccant rotor 100 and the evaporator 115 in the flow path 93. The aftercool cooler 118 is supplied with cold heat source water cooled by a cold heat source device (for example, a cooling tower) separate from the refrigeration cycle of the heat pump 105, and the aftercool cooler 118 The extraneous heat of the outside air OA flowing through the flow path 93 is removed.

  In the humidity control air conditioning system C configured as described above, for example, when dehumidifying and cooling operation is performed in the summer, as shown in FIG. 3, in the air conditioner 2, the entrance P1 and the entrance P2 of the four-way valve 106 are connected. P3 and the entrance P4 are connected. Then, in the heat pump 105, the refrigerant is supplied in order of the precool evaporator 110, the evaporator 115, and the regeneration heat source evaporator 116. The refrigerant absorbed by the precool evaporator 110, the evaporator 115, and the regenerative heat source evaporator 116 is evaporated sequentially and evaporated into a gas, which is then compressed by the compressor 117, and then the inlet / outlet P4 of the four-way valve 106 It passes to P 3 and is supplied to the condenser 112. Then, the refrigerant that has dissipated heat and became a liquid in the condenser 112 is supplied again through the expansion valve 111 in the order of the precool evaporator 110, the evaporator 115, and the regeneration heat source evaporator 116. Thus, in the heat pump 105, the refrigerant is circulated in the order of the precool evaporator 110, the evaporator 115, the regenerative heat source evaporator 116, the compressor 117, the condenser 112 and the expansion valve 11, and the precool evaporator 110 and the evaporator 115 A refrigeration cycle is performed in which the heat is absorbed by the regenerative heat source evaporator 116 and the heat is dissipated by the condenser 112.

  In addition, outside air OA is taken into the flow path 93 of the air conditioner 2 from outside, and passes through the pre-cool evaporator 110, the desiccant rotor 100, the after-cool cooler 118 and the evaporator 115 in this order and dehumidified and cooled Processed air is supplied to the air conditioning space 3 from the air supply duct 96 as the air supply SA. Here, first, in the pre-cool evaporator 110, cooling / dehumidifying of the outside air OA is performed by evaporation of the refrigerant of the heat pump 105, and thereafter, moisture is adsorbed by the desiccant rotor 100 to perform dehumidifying processing. Furthermore, the high-temperature dehumidified air after passing through the desiccant rotor 100 is cooled by the cold heat source water supplied to the aftercool cooler 118 from the cold heat source device of a system different from the heat pump 105 to remove any heat. Then, the outside air OA from which the heat is removed is further cooled by the evaporation of the refrigerant of the heat pump 105 by the evaporator 115, and is supplied to the air-conditioned space 3 as the dehumidified / cooled air supply SA.

  On the other hand, the exhaust EA from the air conditioning space 3 is introduced into the flow passage 92 of the air conditioner 2 through the heat exchanger 85 through the exhaust duct 90 by the power of the fan 91. Further, by the power of the fan 86, the exhaust gas at a high temperature, for example, 40 ° C., which has been heated by the thermal load of the server 80, is taken out from the hot aisle 83 of the server chamber 1 through the duct 87 and introduced into the heat exchanger 85. Then, in the heat exchanger 85, heat exchange between the high temperature exhaust taken out from the hot aisle 83 and the exhaust EA from the air conditioned space 3 is performed, and the exhaust EA from the air conditioned space 3 is heated. The exhaust EA from the air-conditioned space 3 that has become hot in this way is introduced into the flow path 92 of the air conditioner 2, and this high-temperature exhaust EA passes through the condenser 112 and the desiccant rotor 100 in this order and is discharged outdoors (exhaust EA). Ru. In the flow path 92, first, the high temperature exhaust EA is further heated by condensation of the refrigerant of the heat pump 105 in the condenser 112, and thereafter, it is sent to the desiccant rotor 100 to remove and release water, thereby the desiccant rotor 100 is removed. 100 is played. Then, the high temperature, high humidity exhaust EA is exhausted to the outside. In addition, the air (exhaust taken out from the hot aisle 83) which became low temperature by raising the temperature of the exhaust EA from the air-conditioned space in the heat exchanger 85 passes through the return duct 88 and cools the cold air. It is returned to 82.

  Further, as the desiccant rotor 100 rotates, the side surfaces of the desiccant rotor 100 move alternately in the flow path 92 and the flow path 93. Thus, in the flow path 92, the water adhering to the desiccant rotor 100 is removed and discharged to regenerate the desiccant rotor 100. On the other hand, in the flow path 93, the moisture in the outside air OA is regenerated by the regenerated desiccant rotor 100. Is adsorbed and dehumidification processing is performed.

  According to this humidity control air conditioning system C, the extra heat of the outside air OA dehumidified by the desiccant rotor 100 is removed by the aftercool cooler 118 using cold source water of a system different from the refrigeration cycle of the heat pump 105. Since the air is further cooled by the evaporator 115 and supplied to the air-conditioned space 3, the heat load of the heat pump 105 reduces the cooling load of the evaporator 115, thereby reducing power consumption (higher efficiency). Therefore, the power of the compressor 117 provided in the heat pump 1052 can be reduced, and the amount of refrigerant charged in the heat pump 105 can be reduced accordingly. In addition, since the external heat is removed using cold source water of a system different from the heat pump 105, stable cooling can be performed by the evaporator 115 of the heat pump 105, and air supply to the room due to changes in the outside air conditions. The temperature change of SA can be reduced, and the controllability of temperature can be improved.

  The cold heat source water supplied to the aftercool cooler 118 is cooled by a cold heat source device such as a cooling tower, for example. In the cooling tower, since the power for cooling the cold heat source water is only the pump and the fan, cold heat can be produced with an extremely small amount of power compared to a refrigerator or the like. In the after-cool cooler 118, the cooling load in the heat pump circuit 12 is reduced by processing the "rough heat" by the cold source water, and power consumption can be reduced (high efficiency).

  In addition, in the humidity control and air conditioning system C, the humidification and heating operation can also be performed. As shown in FIG. 4, in the humidifying and heating operation state, the four-way valve 106 is connected to the inlet / outlet P1 and the inlet / outlet P4, connected to the inlet / outlet P2 and the inlet / outlet P3, and the precool evaporator 110 functions as a condenser. The condenser 112, the evaporator 115, and the regenerative heat source evaporator 116 function as an evaporator. The heat pump 105 absorbs heat in the condenser 112 (functioning as an evaporator), the evaporator 115, and the regenerative heat source evaporator 116 and evaporates the refrigerant into a gas, which is then compressed by the compressor 117, and then precooled. The refrigerant that has dissipated heat and became liquid in the evaporator 110 (functions as a condenser) is supplied to the condenser 112 (functions as an evaporator), the evaporator 115 and the evaporator 116 for the regenerative heat source through the expansion valve 111 Go. Thus, in the heat pump 105, a refrigeration cycle is performed in which heat is absorbed by the condenser 112 (functioning as an evaporator), the evaporator 115 and the regenerative heat source evaporator 116, and the heat is dissipated by the precooling evaporator 110 (functioning as a condenser), The heated air supply SA is supplied to the air conditioning space 3. In addition, humidification of air supply SA can be performed by the humidifier 119 provided in the air supply duct 96, for example.

Thus, the air conditioning space 3 is dehumidified and operated in summer by using the high temperature exhaust gas taken out from the hot aisle 83 of the server room 1 in the same manner by the humidity control and air conditioning system C, and humidified heating in winter. Energy saving is achieved.
Thus, it is possible to perform efficient air conditioning by utilizing the exhaust heat of the server room 1 for dehumidifying and humidifying the air conditioning space 3 throughout the year.

  As mentioned above, although the embodiment of the present invention was illustrated and explained, the present invention is not limited to the illustrated embodiment. For example, in addition to the dehumidifying / cooling function and the humidifying / heating function described above, a power generation function as shown in FIG. 5 can also be provided. In the example illustrated in FIG. 5, in the server room 1, a rack 121 in which servers 120 are mounted in multiple stages is disposed. Each server 120 is arranged with its air supply surface directed to the cold aisle 122 in the server room 1 and its exhaust surface directed to the hot aisle 123 in the server room 1. In addition, each server 120 is provided with a small fan for cooling called a server fan, and cold air of, for example, 25 ° C. is drawn from the cold aisle 122 side, and the temperature is increased due to the heat load of the server 120 Exhaust air at 50 ° C. is exhausted to the hot aisle 123 side. A cooler 124 such as, for example, a packaged air conditioner is installed outside the server room 1, and the exhaust air from the hot aisle 123 is taken in, cooled by a cold water coil or the like, and supplied to the cold aisle 122.

  Between the server room 1 and the air-conditioned space 3, a temperature difference generator 125 is provided which generates electric power by the temperature difference between the exhaust EA from the air-conditioned space 3 and the high-temperature exhaust taken out from the hot aisle 123. The temperature difference generator 125 also has a function of exchanging heat between the exhaust EA from the air conditioning space 3 and the high temperature exhaust taken from the hot aisle 123. As the temperature difference generator 125, for example, a generator using a Peltier element or the like is used. For example, by generating a temperature difference between the exhaust EA from the air-conditioned space 3 and the high-temperature exhaust taken from the hot aisle 123 at night or in an intermediate period where air conditioning is unnecessary, the electric power is used for the cooler 124 etc. Energy saving is achieved. In addition to the exhaust EA from the air-conditioned space 3, power generation can also be performed by the temperature difference between the outside air OA and the high-temperature exhaust taken from the hot aisle 123. For example, further power saving can be achieved by adding a power generation function as shown in FIG. 5 to the dehumidifying / cooling function and the humidifying / heating function described in FIGS.

  FIG. 1 shows an example in which the cold aisle and the hot aisle are formed in the server room, and FIG. 2 shows an example in which a super hot aisle is formed in addition to the cold aisle and the hot aisle in the server room Renewable desiccant rotors are available on the market even in the temperature range of about 40 ° C. Therefore, the present invention is also applicable to an example in which a cold aisle and a hot aisle are formed in a server room as shown in FIG. Also, the exhaust heat of the server room may collect the exhaust heat of several server rooms, or the exhaust heat of one server room may be used for conditioning of a plurality of office air conditioners. Furthermore, although the form which utilizes the exhaust heat from the server room which accommodated the server as an example was illustrated, the present invention can also utilize the exhaust heat of information communication equipment with heat generation such as electricity and communication equipment other than a server. It is.

  Moreover, although the example provided with the 1st cooler 31 and the 2nd cooler 32 was shown in FIG. 1, the 1st cooler 31 and the 2nd cooler 32 may be only one. In addition to air supply at the same level as the outside air OA, air may be supplied to the air-conditioned space 3 by cooling to a lower temperature. Moreover, it is also possible to provide an air conditioner separately in the air-conditioning space 3, and to temperature-control.

  Moreover, the heat pump 105 shown to FIG. 3, 4 is an illustration, and the heat pump with the same function or function improvement can also be used. For example, the presence or absence of heat source water (water cooling or air cooling) can be dealt with. In the humidification and heating operation, the air introduced into the air-conditioned space 3 may be a return air RA as shown in FIG. 2 or an outside air OA as shown in FIGS. Note that the desiccant rotor can be regenerated if it is about 35 to 50 ° C, or even if the temperature is lower than that, dehumidification can be performed depending on the external air conditions, but the temperature of exhaust heat from the server 10 is 35 ° C or less The humidity control air conditioning system C provided with a heat pump as shown to FIG. 3, 4 is suitable.

  Further, in the above embodiment, an example was described in which the exhaust EA from the air-conditioned space 3 heat-exchanged with the high-temperature exhaust taken out from the hot aisle of the server room 1 and used to heat the desiccant rotor was used. It is also possible to perform the regeneration process of the desiccant rotor with the exhaust itself discharged from an information communication device such as a server. However, when the desiccant rotor is regenerated with exhaust air from the information communication device, an air balance of the server room 1 is required, and it is considered that the energy does not become negative. It is also conceivable to supply the air taken out from the storage room of the information communication device to the storage room of the information communication device for cooling the information communication device after serving for another air conditioning space. When the summer is hot and humid in summer and the low temperature and low humidity in winter as in Japan, putting the outside air in the storage room of the information communication apparatus may result in a decrease in efficiency. In such a case, as described in the embodiment, the exhaust EA from the air-conditioned space 3 heated and heat-exchanged with the high-temperature exhaust taken out from the hot aisle of the server room 1 is used for the regeneration process of the desiccant rotor An example is advantageous.

  According to the present invention, in the server room of a private cloud that is expected to increase in addition to its own office, the exhaust heat of information communication devices with increasing heat density can be used for the office, and the office and server room with low environmental load Can be constructed. The present invention can also be used for heating blown-out air and warm water for heating the perimeter, and preheating water for office hot water supply all year round. In particular, data centers and the like have high heat density per floor area and dozens of times more than offices, and can obtain sufficient waste heat.

  INDUSTRIAL APPLICABILITY The present invention is useful for air conditioning such as a living room or office work space provided adjacent to an electric / communication device such as a data center, a server room containing information communication devices such as a server, and the like.

A, B, C Humidity control air conditioning system 1 server room 2 air conditioner 3 air conditioning space 10 server 11 rack 12 call aisle 13 hot aisle 14 cooler 15 heat exchanger 16 fan 17 takeout duct 18 return duct 20 takeout duct 21, 25 27 fan 22, 23, 24 flow path 28 exhaust duct 30 desiccant rotor 31 first cooler 32 second cooler 40 standard server 41 standard server rack 42 high temperature resistant server 43 high temperature resistant server rack 45 call aisle 46 hot aisle 47 Super hot aisle 48, 49 cooler 50 heat exchanger 51, 56, 60 fan 52 extraction duct 53 return duct 53
55 return air duct 57, 58, 59 flow path 61 air supply duct 62 bypass duct 63, 64, 71, 72 open / close damper 65 humidifier 70 outside air introduction duct 75 desiccant rotor 76 cooler 80 server 81 rack 82 call aisle 83 hot aisle 84 cooler 90 take-out duct 91, 95 fan 92, 93 flow path 96 air supply duct 100 desiccant rotor 105 heat pump 106 four-way valve 107 first flow path 108 second flow path 110 pre-cool evaporator 111 expansion valve 112 condenser 115 Evaporator 115
116 Regeneration heat source evaporator 116
117 compressor 118 cooler for after cooling 120 server 121 rack 122 cold aisle 123 hot aisle 124 cooler 125 temperature difference generator

Claims (5)

A humidity control air conditioning system for supplying air conditioned and processed using a desiccant rotor to an air conditioning space, comprising:
The desiccant rotor is rotatable across a flow path of air heated by exhaust heat of an information communication device stored in a space different from the air-conditioned space and a flow path of air supplied to the air-conditioned space Placed in
The information communication device includes a standard information communication device whose operation is guaranteed in a standard temperature range and a high temperature durable information communication device whose operation is guaranteed up to a temperature range higher than the standard temperature region.
The desiccant rotor is regenerated by the air heated by the exhaust heat of the high-temperature durable information communication device,
The air dehumidified by the regenerated desiccant is supplied to the air-conditioned space,
After the high temperature exhaust air heated by the high temperature information communication device exchanges heat with the air for regenerating the desiccant rotor, the cold aisle of the standard information communication device or the hot aisle of the discharge side A humidity control air conditioning system using exhaust heat of information communication equipment, characterized in that it is returned.   The information according to claim 1, wherein a cooler for cooling air supplied to the air conditioning space is provided downstream of the desiccant rotor in a flow path of air supplied to the air conditioning space. A humidity control air conditioning system that uses the exhaust heat of communication equipment.   A heat exchanger for raising the temperature of exhaust air from the air-conditioned space by the exhaust heat of the high-temperature durable information communication device is provided, and the desiccant rotor is regenerated by the exhaust air from the air-conditioned space heated by the heat exchanger. A humidity control air conditioning system using exhaust heat of the information communication device according to claim 1 or 2.   A heat exchanger for raising the temperature of the outside air by the exhaust heat of information communication equipment, and a flow path for supplying the outside air heated by the heat exchanger to the air conditioning space without passing through the desiccant rotor; The humidity control air conditioning using exhaust heat of the information communication device according to any one of claims 1 to 3, characterized in that a humidifier is provided in a flow path for supplying the air conditioning space without passing through a desiccant rotor. system. A humidity control and air conditioning method for supplying air conditioned and processed using a desiccant rotor to an air conditioning space, comprising:
The desiccant rotor is rotatable across a flow path of air heated by exhaust heat of an information communication device stored in a space different from the air conditioning space and a flow path of air supplied to the air conditioning space Place in
The information communication device is constituted by a standard information communication device whose operation is guaranteed in a standard temperature range and a high temperature durability information communication device whose operation is guaranteed up to a temperature range higher than the standard temperature region,
Air regenerated by the air heated by the exhaust heat of the high-temperature durable information communication device, and dehumidified by the desiccant rotor in the flow path of air supplied to the air-conditioned space. In the dehumidifying / cooling operation of cooling the air downstream of the desiccant rotor and supplying the air to the air-conditioned space, and in the flow path for supplying the outside air to the air-conditioned space without passing through the desiccant rotor, A humidity control and air conditioning method using exhaust heat of information communication equipment, characterized by performing humidification heating operation of humidifying outside air heated by air heated by heat and supplying air to the air conditioned space.

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