JP5648102B1 - Server rack indoor system - Google Patents

Abstract

The present invention relates to a server rack indoor system to which an outside air cooling system is applied, and provides an outside air cooling system server rack indoor system having high energy reduction performance without requiring much energy for regeneration of a dehumidifying mechanism. A server rack row 1a composed of two or more server racks 1 is disposed on a floor 2A having a blowout port, and the outside air introduced into the underfloor space VC through the outside air intake hole 2a is the server. In a server rack indoor system 10 that is provided to the rack row 1a and the exhaust air that has passed through the server rack row 1a is cooled by the air conditioner 3, two rotary rolls 5a are provided between the air conditioner 3 and the server rack row 1a. , 5b, and a rotatable dehumidifying cloth 6 is disposed. At least one rotating roll 5b is located in the middle of the underfloor space VC, and the outside air is dehumidified by contacting with the dehumidifying cloth 6, so that the dehumidifying cloth 6 is removed. When moisture is removed from the dehumidifying cloth 6 and the dehumidifying cloth 6 is regenerated, exhaust air is provided to the dehumidifying cloth 6. [Selection] Figure 1

Description

  The present invention relates to a server rack indoor system that introduces outside air and applies it as cold air.

  Provide a variety of functions and services to multiple PCs on a network such as the Internet or LAN, and servers that centralize data are integrated in a rack to form a server rack, and multiple server racks are arranged adjacent to each other Thus, a server rack row is formed, and a plurality of server rack rows are arranged with a passage therebetween to constitute a server rack indoor system. The passage between each server rack row forms either a hot aisle space where exhaust is exhausted from the back of the server rack or a cold aisle space where cool air is provided. In general, hot aisle spaces and cold aisle spaces are formed alternately. This server rack indoor system may be referred to as a data center.

  The passage has, for example, a double floor structure, and a large number of outlets through which cool air flows are opened on the upper floor constituting the double floor, and the cool air provided from the air conditioner is located between the double floors. It is designed to circulate through the underfloor space that is formed.

  Then, the cold air provided to the cold aisle space through the air outlet is provided to each server rack constituting the server rack row via the front surface of each server rack row facing the cold aisle space, and stored in the server rack. In the process of passing through the server, the cool air takes away heat, rises in temperature, becomes warm air, and is discharged from the back of the server rack to the hot aisle space. The exhaust exhausted from the back of the server rack is returned to the air conditioner, air control device, etc., where it is returned to the cold air again, and by repeating such cold air circulation in the server rack room, Generally, each server is controlled to a predetermined temperature state.

  In this way, the air conditioning system that flows cold air from the air conditioner into the underfloor space of the double floor and blows cold air from the floor to the cold aisle space and provides it to each server rack is sometimes called floor blowing air conditioning, It is distinguished from an air conditioning system in which cool air is supplied from the air conditioner in the lateral direction to provide cool air to each server rack.

  In this floor blowout air conditioning, an air conditioner is disposed in front of each cold aisle space, and the cold air blown out from the air conditioner is provided to the upper server rack through the blowout opening while circulating through the underfloor space.

  By the way, from the viewpoint of reducing energy input to the air conditioner, a cooling system that introduces outside air into the server rack room and effectively uses this as cooling air has been attracting attention, and a server rack to which the outside air cooling system is applied in this way. Japanese Patent Application Laid-Open No. 2004-133867 discloses a technique related to an air conditioner. Note that the air conditioner disclosed in Patent Document 1 is a humidifying air-conditioning type air conditioner that air-conditions introduced outside air with a humidifier.

  When air conditioning the server rack room, it is important to manage humidity in addition to temperature. This is because if the humidity is too high, the problem of dew condensation or electrical circuit short-circuiting may occur, and if the humidity is too low, an electrostatic failure may occur.

  In addition, regarding the humidity management, when applying the outside air cooling method, for example, in the summer when the humidity is high, it is necessary to provide the server rack row with the cold air after dehumidification after the introduction of the outside air.

  For this dehumidification, a stationary block type desiccant (a silica gel or zeolite desiccant shaped into a square or cylindrical shape) is placed in the underfloor space, for example, and the outside air introduced into the underfloor space passes through this desiccant. Thus, a server rack indoor system having a configuration in which dehumidification is performed in the process of passing and cool air composed of outside air after dehumidification is provided to the server rack row is applied. In addition, a method in which desiccant is used to dehumidify outside air, for example, and the outside air after dehumidification is provided as cold air to the server rack can be referred to as desiccant air conditioning.

  In such a desiccant air conditioner, so-called desiccant regeneration is required in which moisture is removed from a desiccant that has absorbed moisture and a desiccant having a dehumidifying performance is generated again. In the regeneration of this desiccant, when applying the above-mentioned stationary block type desiccant, a heat source such as a heater for supplying heat to the desiccant is required, and the outside air cooling method is adopted for the purpose of energy reduction. Nevertheless, the energy reduction effect is diminished by the energy required for the heat source for desiccant regeneration.

JP 2010-261696 A

  The present invention has been made in view of the above-described problems, and relates to a server rack indoor system to which an outside air cooling system is applied, which does not require much energy for regeneration of the dehumidifying mechanism and thus has a high energy reduction performance. It aims to provide a server rack indoor system.

  In order to achieve the above object, in the server rack indoor system according to the present invention, a server rack row composed of two or more server racks is arranged on a floor provided with a blowout opening, and below the floor is an underfloor space. Outside air is introduced into the underfloor space through the outside air intake hole, the outside air is provided to the server rack row through the blowout port, and the exhaust gas that has passed through the server rack row is in fluid communication with the underfloor space. In a server rack indoor system designed to be cooled by an air conditioner, the dehumidifying cloth is rotatable between at least two rotating rolls at a position between the air conditioner and the server rack row. The at least one rotating roll is in the middle of the underfloor space, and the outside air introduced into the underfloor space comes into contact with the dehumidifying cloth and is dehumidified. -It is provided to the rack row, and when the moisture is removed from the dehumidifying cloth and the dehumidifying cloth is regenerated, the dehumidifying cloth is provided with the exhaust gas that has passed through the server rack row. is there.

  The server rack indoor system of the present invention employs a mechanism in which a dehumidifying cloth rotates while rotating between an underfloor space below a double floor and an upper space above as a dehumidifying mechanism for dehumidifying outside air introduced into the underfloor space. In addition to dehumidifying the outside air with this rotating dehumidifying cloth, the rotating dehumidifying cloth is regenerated with the heat exhausted from the back of the server rack. In this case, the heat source inherent to the regeneration is not necessary, and the system with high energy reduction performance is coupled with the application of the outside air cooling system.

  For example, a rotatable dehumidifying cloth spanned between two rotating rolls is disposed at a position between the air conditioner and the server rack row, and the lower rotating roll is positioned in the underfloor space and thus rotates. The dehumidifying cloth can move repeatedly between the under-floor space and the above-floor space. Here, as an embodiment of the dehumidifying cloth spanned between the rotating rolls, in addition to the form in which the dehumidifying cloth is spanned between the two rotating rolls, for example, three rotating rolls below and two rotating rolls above 2 or more units are provided with a configuration in which the dehumidifying cloth stretched between these five rotating rolls moves and the configuration in which the dehumidifying cloth is stretched between the two rotating rolls as one unit. And a plurality of continuous forms.

  Here, the dehumidifying cloth is formed from cloth (woven fabric), non-woven fabric, film, etc., and the dehumidifying cloth is impregnated with a polymer sorbent powder, or a desiccant such as silica gel or zeolite is removed through an adhesive. Or by fixing a block desiccant to the dehumidifying cloth with a fastening pin.

  Two or more server rack rows are arranged on the double floor across the passage, and the alternately formed passages form a cold aisle space and a hot aisle space, respectively.

  The outside air introduced into the underfloor space from an outside air intake hole provided at a proper position in the underfloor space comes into contact with the dehumidifying cloth at least in the underfloor space and is dehumidified.

  Since a rotatable dehumidifying cloth is disposed between the air conditioner and the server rack row, the exhaust discharged from each hot aisle space is dehumidified in the process of flowing, for example, above the server rack row to the air conditioner side. The cloth is provided to the cloth, and the dehumidifying cloth is regenerated by the heat of the exhaust.

  The exhaust gas that has passed through the dehumidifying cloth is sent to the air conditioner (a part of the exhaust gas may be discharged outside the server rack room), and cold air is generated by the air conditioner and provided to the underfloor space.

  In this way, “cool air” in the outside air introduction method is not only the introduced outside air but also the one that is generated by passing the outside air through the server rack through the air conditioner, and these are mixed The thing which was done is included. A cooling plate or the like is arranged in front of the air conditioner and immediately before the exhaust enters the air conditioner, and the exhaust is precooled in the process of contacting the cooling plate and the exhaust after precooling is supplied to the air conditioner. By sending it, the required energy in the air conditioner (energy required when the exhaust air is cooled) may be reduced.

  The dehumidifying mechanism composed of a rotatable dehumidifying cloth as described above is preferably provided on each floor in a building having two or more floors, for example. For example, in a five-story building, each floor has a double floor structure, and outside air intake holes are provided at appropriate locations on each double floor, so that it can rotate freely between the air conditioners installed on each floor and the server rack row. A configuration in which a dehumidifying mechanism including a dehumidifying cloth is provided can be applied.

  Moreover, as a form of introducing outside air into the underfloor space, in addition to a form in which an outside air intake hole is simply provided at an appropriate position in the underfloor space, an outside air introduction fan is provided in the outside air intake hole to positively introduce the outside air. The outside air intake hole is provided in the vicinity of the blow-off portion that blows out the cold air from the air conditioner, and a vacuum atmosphere is formed using the flow of the cold air blown out from the air conditioner. An outside air introduction method using the so-called ejector effect that introduces outside air can be applied.

  Here, as a more specific embodiment of the rotatable dehumidifying cloth, the following two forms can be mentioned.

  In one embodiment of the rotatable dehumidifying cloth, a partition having a height from the lower surface of the underfloor space to the upper side of the underfloor space is provided between the air conditioner and the rotatable dehumidifying cloth, and is introduced into the underfloor space. The outside air and the cold air blown out from the air conditioner rises along the surface of the screen air conditioner side, descends along the screen side of the partition server rack row beyond the screen, and during this descent, In this configuration, dehumidification is performed with a dehumidifying cloth located between the partition and the server rack row.

  The contact area between the outside air and the dehumidifying cloth can be increased by lowering the outside air over the screen on the server rack row side of the screen and bringing it into contact with the dehumidifying cloth during the descent process, or the contact time Can be lengthened and the dehumidifying property of the dehumidifying cloth becomes extremely high.

  In this embodiment, a Peltier element is disposed inside the dehumidifying cloth spanned between two rotating rolls, and at this time, the heat generation surface of the Peltier element faces the dehumidifying cloth on the server rack row side. By making the cooling surface of the Peltier element face the dehumidifying cloth on the air conditioner side, the regeneration effect of the dehumidifying cloth due to heat from the heat generating surface of the Peltier element is enhanced, and the pre-cooling effect of the outside air by absorbing heat from the cooling surface of the Peltier element Is obtained.

  Another embodiment of the rotatable dehumidifying cloth is a form in which outside air introduced into the underfloor space passes through the dehumidifying cloth.

  In this form of the dehumidifying mechanism, dehumidification is performed in the process in which the outside air flowing through the underfloor space passes through the dehumidifying cloth in the underfloor space, and compared with the dehumidifying mechanism of the form having the screen described above, Although the dehumidifying performance is inferior because the contact area of the dehumidifying cloth is relatively small, the construction cost of the dehumidifying mechanism is relatively low because the structure of the dehumidifying mechanism is extremely simple.

  As can be understood from the above description, according to the server rack indoor system of the present invention, the dehumidifying mechanism for dehumidifying the outside air introduced into the underfloor space is dehumidified between the space above and below the double floor. Applying a mechanism that rotates the cloth to dehumidify the outside air with this dehumidifying cloth, and regenerating the dehumidifying cloth by using the exhausted heat discharged from the back of the server rack. Therefore, it is possible to provide a server rack indoor system with high energy reduction performance in combination with the application of the outside air cooling system, which eliminates the need for an inherent heat source.

It is the schematic diagram which showed Embodiment 1 of the server rack indoor system of this invention. (A), (b) is the schematic diagram which each showed Embodiment 1, 2 of the dehumidification cloth. It is the schematic diagram which showed Embodiment 2 of the server rack indoor system of this invention. It is the schematic diagram which showed Embodiment 3 of the server rack indoor system of this invention. It is the schematic diagram which showed Embodiment 4 of the server rack indoor system of this invention. It is the schematic diagram which showed Embodiment 5 of the server rack indoor system of this invention.

  Hereinafter, an embodiment of a server rack indoor system of the present invention will be described with reference to the drawings. In the illustrated example, the server rack indoor system on one floor is described. However, when the server rack indoor system is applied to each of a plurality of floors of two or more floors, the system illustrated in FIG. Applied.

(Embodiment 1 of server rack indoor system)
FIG. 1 is a schematic diagram showing a first embodiment of a server rack indoor system of the present invention, and FIGS. 2a and 2b are schematic diagrams showing first and second embodiments of a dehumidifying cloth, respectively.

  The illustrated server rack indoor system 10 is a floor blown air conditioning system. On the upper floor 2A of the double floor 2, a plurality of server racks 1 are arranged side by side to form a server rack row 1a, and a plurality of server rack rows 1a are arranged through a passage to form the whole. . The passage between the opposing server rack rows 1a is either a cold aisle space CA which is the front side of the server rack and takes cold air into the server rack 1 or a hot aisle space located on the back side of the server rack 1. A cold aisle space CA and a hot aisle space are alternately formed in each passage formed between a plurality of server rack rows 1a. The illustrated example is a vertical cross section passing through the cold aisle space CA.

  In the server rack room, a unique air conditioner 3 is arranged in front of each cold aisle space CA. The arrangement of the air conditioners is not limited to the front position of the cold aisle space, but can be changed to another part (for example, the rear of the last server rack row on the back side of the paper in the illustrated example). The air conditioner may be further provided at each of the above locations.

  The double floor 2 is composed of an upper floor 2A and a lower floor 2B. An underfloor space VC is formed between the two floors 2A and 2B, and an underfloor air conditioning system in which cool air flows through the underfloor space VC is adopted. Yes.

  At a position between the air conditioner 3 and the server rack row 1a, a rotating roll 5b is disposed in the underfloor space VC, and a separate rotating roll 5a is disposed in the space above the floor, and these rotating rolls. A dehumidifying cloth 6 that is continuous in a roll shape is stretched between 5a and 5b. When an actuator such as a servo motor (not shown) is driven, for example, the rotating roll 5a is rotated, and the dehumidifying cloth 6 is repeatedly moved while rotating between the upper and lower sides of the upper floor 2A (Y direction). In addition, these rotary rolls 5a and 5b and the dehumidifying cloth 6, or these modifications are collectively referred to as a dehumidifying mechanism in this specification.

  A more specific configuration of the dehumidifying cloth 6 is shown in FIGS.

  The dehumidifying cloth 6 shown in FIG. 2a is made of cloth (woven fabric), non-woven fabric, film, etc., and is made by adhering a block-like desiccant 8 such as silica gel or zeolite to the dehumidifying cloth 6 with an adhesive. In addition to this adhesion method, the method of fixing the block-shaped desiccant 8 to the dehumidifying cloth 6 includes a method of pinning the block-shaped desiccant 8 to the dehumidifying cloth 6.

  On the other hand, the dehumidifying cloth 6 shown in FIG. 2b is in a form impregnated with a polymer sorbent powder (impregnation desiccant 8A).

  In the process of rotating the dehumidifying cloth 6 fixed or impregnated with the dehumidifying agent between the rotating rolls 5a and 5b as in the illustrated example, the dehumidifying cloth 6 in the rotating posture performs dehumidification of the outside air in a certain region, In the region, the dehumidifying cloth 6 containing moisture is dried and regenerated (detailed below).

  Between the air conditioner 3 and the dehumidifying mechanism, it has a height from the lower floor 2B of the double floor 2 to above the underfloor space VC (specifically, has a height corresponding to the upper surface level of the air conditioner 3). ) A screen 4 is provided.

  Further, in the server rack room, an outside air intake hole 2a is provided on a side surface (an end surface on the front side in the drawing) opposite to the server rack row 1a with respect to the air conditioner 3, and the outside air intake hole 2a The duct is in fluid communication, and an opening is opened at the position of each air conditioner 3 of the duct, and outside air flows into the underfloor space VC through the opening.

  More specifically, cold air is sent out from below the air conditioner 3 to the underfloor space VC (in the X2 direction), but a curved outside air introduction plate 2b protrudes into the underfloor space VC on the lower surface of the air conditioner 3. The cold air sent out from the air conditioner 3 is provided in the underfloor space VC while sliding on the upper surface of the outside air introduction plate 2b (X2 direction). On the other hand, there is a gap through which the introduced outside air flows between the front end of the outside air introduction plate 2b and the lower floor 2B, and cold air from the air conditioner 3 flows on the outside air introduction plate 2b in front of this gap ( The vacuum region VA is formed in the process (X2 direction). Due to this vacuum region VA, introduction of outside air from the outside air intake hole 2a is promoted by the ejector effect (X1 direction), and the introduced outside air flows through the underfloor space VC together with the cold air from the air conditioner 3. In addition to the illustrated example, the outside air may be introduced in a form having only the outside air intake hole 2a or a form having an introduction fan outside the outside air intake hole 2a.

  Here, “cold air” refers to gas generated in the process in which the exhaust discharged from the back of the server rack 1 passes through the air conditioner 3, outside air introduced into the underfloor space VC, gas mixed with these, and the like. Contains.

  Cold air flowing down from the air conditioner 3 (X2 direction) or outside air introduced into the underfloor space VC (X1 direction) rises along the surface of the air conditioner 3 side of the partition 4 in the downstream direction and exceeds the partition 4 It descends along the surface of the partition 4 on the server rack row 1a side (X3 direction).

  During this descent, dehumidification is performed in the process in which outside air contacts the dehumidifying cloth 6 that rotates and is positioned between the partition 4 and the server rack row 1a (Y direction), and the outside air after dehumidification is stored under the floor space. The VC is distributed and is provided to the cold aisle space CA on the floor via a blow-out port (not shown) provided in the upper floor 2A (X4 direction), and is provided to the server rack 1 from the front of each server rack 1. Note that such an increase in cold air is generally provided with a fan for exhaust discharge on the back of the server rack 1, and the upper space of the double floor 2 is generally decompressed as compared with the underfloor space VC by driving this fan. It has an atmosphere and is obscured by the differential pressure between these two spaces.

  The cool air draws heat from the server in the process of circulating in the server rack 1, and the exhaust air generated when the cold air is heated is discharged from the back of the server rack 1 to the hot aisle space, and the air conditioner 3 above the hot aisle space. To the side (X5 direction). In the air conditioner 3, an exhaust fan 7b for exhausting a part of the exhaust to the outside of the server rack room (X8 direction) is provided on the opposite side of the server rack row 1a. When the exhaust fan 7b is driven, a hot aisle space is provided. A certain exhaust gas is sucked and an exhaust flow (X5 direction, X7 direction) toward the exhaust fan 7b is formed.

  A part of the exhaust gas flowing to the air conditioner 3 side in the hot aisle space goes around the end of the endmost server rack 1 on the air conditioner 3 side and rotates at the position on the air conditioner 3 side. (X6 direction).

  Due to the heat of the exhaust gas flowing in in this way, moisture is removed from the dehumidifying cloth 6 (and the desiccant 8, 8A) with humidity, and the dehumidifying cloth 6 (and the desiccant 8, 8A) is regenerated.

  As described above, in the dehumidifying mechanism of the illustrated example, a high dehumidifying effect can be expected by performing dehumidification from outside air or the like on the entire surface of the dehumidifying cloth 6 in the rotating posture on the air conditioner 3 side.

  On the other hand, since the regeneration is achieved by exhausting the entire surface of the dehumidifying cloth 6 in the rotating posture on the server rack row 1a side, a high regeneration effect can be expected.

  A cooling plate 7 a is provided in front of the air conditioner 3 and immediately before the exhaust enters the air conditioner 3. The cooling plate 7 a is precooled in the process in which the exhaust contacts the cooling plate 7 a, and the precooled exhaust is supplied to the air conditioner 3. It is to be sent (X9 direction). The illustrated cooling plate 7a may include a cooling pipe that extends to the ceiling space of the server rack room where outside air is introduced.

  The exhaust air pre-cooled by the cooling plate 7 a is sent to the air conditioner 3, where cold air is generated and blown out from below the air conditioner 3 to the underfloor space VC, and the blown out cold air and the introduced outside air are along the partitions 4. Then, it rises again, is dehumidified, and is provided to the server rack row 1a.

  According to the server rack indoor system 10 shown in the figure, the dehumidifying cloth 6 rotates between the lower floor space VC below the double floor 2 and the upper upper space as a dehumidifying mechanism for dehumidifying the outside air introduced into the underfloor space VC. The moving mechanism is applied, and the dehumidifying cloth 6 in the rotating posture is used to dehumidify the outside air, and the dehumidifying cloth 6 in the rotating posture is regenerated with exhausted heat discharged from the back of the server rack. When the material is regenerated, a heat source specific to the regeneration is not required, and the system with high energy reduction performance is combined with the application of the outside air cooling system.

(Embodiment 2 of server rack indoor system)
FIG. 3 is a schematic diagram showing Embodiment 2 of the server rack indoor system of the present invention.

  The server rack indoor system 10A shown in the figure is a server rack indoor system 10 shown in FIG. 1 in which a Peltier element 9 is disposed inside a dehumidifying cloth 6 spanned between two rotating rolls 5a and 5b. is there.

  More specifically, the heat generating surface 9a of the Peltier element 9 is opposed to the dehumidifying cloth 6 on the server rack row 1a side, and the cooling surface 9b of the Peltier element 9 is opposed to the dehumidifying cloth 6 on the air conditioner 3 side.

  According to the server rack indoor system 10A of the illustrated example, the regeneration effect of the dehumidifying cloth 6 is enhanced by the heat from the heat generating surface 9a of the Peltier element 9, and the precooling effect of the outside air is obtained by the heat absorption from the cooling surface 9b of the Peltier element 9. .

(Embodiment 3 of server rack indoor system)
FIG. 4 is a schematic diagram showing Embodiment 3 of the server rack indoor system of the present invention.

  The server rack indoor system 10B shown in FIG. 1 is a simplified version of the configuration of the server rack indoor system 10 shown in FIG. 1, and includes a dehumidifying mechanism that is composed of only the rotating rolls 5a and 5b and the dehumidifying cloth 6 by eliminating the partitions. Applicable.

  Dehumidification is performed in the process in which the outside air flowing through the underfloor space VC passes through the dehumidifying cloth 6 in the underfloor space VC (in the X3 ′ direction). Although the dehumidifying performance is inferior because the contact area of the cloth 6 is relatively small, the construction cost of the dehumidifying mechanism is relatively low because the structure of the dehumidifying mechanism is extremely simple.

(Embodiment 4 of server rack indoor system)
FIG. 5 is a schematic diagram showing Embodiment 4 of the server rack indoor system of the present invention.

  The server rack indoor system 10C shown in the figure has a dehumidifying mechanism having a plurality of continuous forms in which two units are provided together with a configuration in which a dehumidifying cloth 6 is stretched between two rotating rolls 5a and 5b as one unit. Yes. Note that three or more units may be provided side by side depending on the desired dehumidifying performance.

(Embodiment 5 of server rack indoor system)
FIG. 6 is a schematic diagram showing Embodiment 5 of the server rack indoor system of the present invention.

  In the server rack indoor system 10D shown in the figure, two rotating rolls 5b are arranged below, another rotating roll 5b 'is arranged at a slightly higher position, and two additional rotating rolls 5a are arranged at an upper position. A roll-type dehumidifying cloth 6 is sequentially laid over these, and is provided with a dehumidifying mechanism in a continuous continuous form configured to be movable up and down.

  As described above, according to the server rack indoor system 10B, since the outside air contact area with the dehumidifying cloth 6 is reduced, a plurality of dehumidification mechanisms such as the server rack indoor systems 10C and 10D and a continuous dehumidification mechanism are provided. By applying, desired dehumidifying performance can be ensured.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Server rack, 1a ... Server rack row, 2 ... Double floor, 2A ... Floor (upper floor), 2B ... Lower floor, 2a ... Outside air intake hole, 2b ... Outside air introduction plate, 3 ... Air conditioner, 4 ... Screen, 5a, 5b, 5b '... rotating roll, 6 ... dehumidifying cloth, 7a ... cooling plate, 7b ... exhaust fan, 8 ... block desiccant, 8A ... impregnating desiccant, 9 ... Peltier element 10, 10A, 10B, 10C, 10D ... Server rack indoor system, VC ... Under-floor space, VA ... Vacuum area

Claims (2)

A server rack row composed of two or more server racks is disposed on a floor provided with a blowout opening, and an underfloor space is provided below the floor,
An air conditioner in which outside air is introduced into the underfloor space through an outside air intake hole, the outside air is provided to the server rack row through a blowout port, and the exhaust gas that has passed through the server rack row is in fluid communication with the underfloor space. In the server rack indoor system that is supposed to be cold,
At the position between the air conditioner and the server rack row, a rotatable dehumidifying cloth is disposed between at least two rotating rolls, and at least one rotating roll is in the middle of the underfloor space,
The outside air introduced into the underfloor space comes into contact with the dehumidifying cloth and is dehumidified, and the outside air after dehumidification is provided to the server rack row,
A server rack indoor system configured such that when moisture is removed from a dehumidifying cloth and the dehumidifying cloth is regenerated, exhaust air that has passed through the server rack row is provided to the dehumidifying cloth .
Between the air conditioner and the rotatable dehumidifying cloth, a partition having a height from the lower surface of the underfloor space to the upper side of the underfloor space is provided,
The outside air introduced into the underfloor space and the cold air blown from the air conditioner rises along the screen on the air conditioner side of the partition, descends along the surface on the server rack row side of the partition beyond the partition, and this descent In this case, the server rack indoor system is designed to perform dehumidification with a dehumidifying cloth located between the screen and the server rack row . A Peltier element is placed inside the dehumidifying cloth spanned between the two rotating rolls. At this time, the heat generating surface of the Peltier element faces the dehumidifying cloth on the server rack row side, and the cooling surface of the Peltier element is air-conditioned. The server rack indoor system according to claim 1 , which is opposed to a machine-side dehumidifying cloth.

Images