Data Center

Abstract

To provide a mechanism for improving cooling performance of a data center.SOLUTION: A data center comprises a server room, a chamber room arranged adjacent to the server room, and a stepped roof covering the server room and the chamber room. The server room has a space in which at least a row of server racks is arranged. When a row of server racks is arranged in the space, a hot aisle is formed on an air-exhaustion side of the row of server racks and a cold aisle is formed on an air-supply side of the row of server racks. The stepped roof has an exhaust port for discharging the air rising from the hot aisle.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to data centers. [Background technology]

[0002] With the recent development of information and communication technology, large-scale data centers have been constructed. Data centers house and operate a large number of information processing devices, such as servers and communication equipment. To ensure stable operation of the devices housed in the data center, the temperature inside the center is maintained at a constant level. This temperature control is achieved using an air conditioning system installed in the data center (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-3593 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a mechanism for improving the cooling performance of a data center. [Means for solving the problem]

[0005] In order to solve the above problems, for example, the configurations described in the claims are adopted. The present application includes multiple means for solving the above-mentioned problems, and one example is a data center comprising: a server room; a chamber room arranged adjacent to the server room; and a stepped roof covering the server room and the chamber room, wherein the server room has a space for arranging at least one row of server racks side by side, and when the row of server racks is arranged in the space, a hot aisle is formed on the exhaust side of the row of server racks and a cold aisle is formed on the intake side of the row of server racks, and the stepped roof has an exhaust port for exhausting air that rises from the hot aisle. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a mechanism for improving the cooling performance of a data center. Problems, configurations and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view illustrating an example of a data center 100 . [Figure 2] FIG. 2 is a perspective view illustrating an example of a data center 100. As shown in FIG. [Figure 3] FIG. 3 is a plan view illustrating an example of a data center 100. As shown in FIG. [Figure 4] FIG. 4 is a perspective view showing an example of a pair of server rack rows 104. As shown in FIG. [Figure 5] FIG. 5 is a vertical cross-sectional view showing an example of a data center 100. As shown in FIG. [Figure 6] FIG. 6 is a perspective view of an example data center 600 . [Figure 7] FIG. 7 is a perspective view illustrating an example of a data center 600 . [Figure 8] FIG. 8 is a plan view illustrating an example of a data center 600. As shown in FIG. [Figure 9] FIG. 9 is a perspective view showing an example of a pair of server rack rows 604 . [Figure 10] FIG. 10 is a vertical cross-sectional view illustrating an example of a data center 600 . [Figure 11] FIG. 11 is a perspective view showing an example of a pair of server rack rows 104 (604). [Figure 12] FIG. 12 is a side view showing an example of a pair of server rack rows 104 (604). [Figure 13] FIG. 13 is a plan view showing an example of the overall structure of a data center 600. As shown in FIG. [Figure 14] FIG. 14 is a south elevation view showing an example of the overall structure of the data center 600. [Figure 15] FIG. 15 is a west elevation view showing an example of the overall structure of a data center 600. [Figure 16] FIG. 16 is a north elevation view showing an example of the overall structure of a data center 600. [Figure 17] FIG. 17 is an east elevation view showing an example of the overall structure of the data center 600. [Figure 18] FIG. 18 is a diagram showing an example of a cross section taken along line AA in FIG. [Figure 19] FIG. 19 is a diagram showing an example of a cross section taken along line BB in FIG. [Figure 20] FIG. 20 is a diagram showing an example of a cross section taken along line CC in FIG. [Figure 21] FIG. 21 is a diagram showing an example of a cross section taken along line DD in FIG. [Figure 22] FIG. 22 is a diagram showing an example of the temperature distribution in the first embodiment. [Figure 23] FIG. 23 is a diagram showing an example of the temperature distribution in the first embodiment. [Figure 24] FIG. 24 is a diagram showing an example of the temperature distribution in the second embodiment. [Figure 25] FIG. 25 is a diagram showing an example of the temperature distribution in the second embodiment. [Figure 26] FIG. 26 is a diagram showing an example of detailed humidity distribution in the first embodiment. [Figure 27] FIG. 27 is a diagram showing an example of detailed humidity distribution in the second embodiment. [Figure 28]FIG. 28 is a diagram showing an example of humidity distribution in the first embodiment. [Figure 29] FIG. 29 is a diagram showing an example of humidity distribution in the first embodiment. [Figure 30] FIG. 30 is a diagram showing an example of humidity distribution in the second embodiment. [Figure 31] FIG. 31 is a diagram showing an example of humidity distribution in the second embodiment. [Figure 32] FIG. 32 is a diagram showing an example of detailed humidity distribution in the first embodiment. [Figure 33] FIG. 33 is a diagram showing an example of detailed humidity distribution in the second embodiment. [Figure 34] FIG. 34 is a diagram showing an example of the velocity distribution in the first embodiment. [Figure 35] FIG. 35 is a diagram showing an example of the velocity distribution in the first embodiment. [Figure 36] FIG. 36 is a diagram showing an example of the velocity distribution in the second embodiment. [Figure 37] FIG. 37 is a diagram showing an example of the velocity distribution in the second embodiment. [Figure 38] FIG. 38 is a diagram illustrating an example of an airflow path model of the data center 600. As shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment will be described with reference to the drawings.

[0009] A data center 100 according to a first embodiment will be described. 1 to 3 show an example of a data center 100 according to a first embodiment. Figures 1 and 2 are perspective views, and Figure 3 is a plan view. The data center 100 includes a main server room 101, a chamber room 102 arranged adjacent to the main server room 101, and a stepped roof 103 covering the main server room 101 and the chamber room 102.

[0010] The main server room 101 has a space for arranging multiple server racks side by side. Eight server rack rows 104 are arranged in this space. The server rack rows 104 are arranged approximately parallel to and at equal intervals in the short direction (east-west direction) of the main server room 101. Of the eight server rack rows 104, two adjacent server rack rows 104 are arranged so that their rear sides face each other, thereby forming a pair of server rack rows 104. A partition board 105 is installed on the periphery of the pair of server rack rows 104. This partition board 105 has a height that reaches from the floor to the ceiling board 106, and covers both end faces of the pair of server rack rows 104 in the longitudinal direction (east-west direction) and the front sides of the pair of server rack rows 104. A hot aisle 300 is formed inside this partition board 105, and a cold aisle 301 is formed outside it.

[0011] Exhaust slits are formed in part of the ceiling board 106 of the main server room 101. Specifically, multiple exhaust slits are formed in a rectangular area 302 located approximately directly above the hot aisle 300. These exhaust slits are exhaust ports for allowing air rising from the hot aisle 300 to escape to the attic 107. Additionally, multiple exhaust slits are formed in a rectangular area 303 extending along the western wall of the main server room 101. These exhaust slits are exhaust ports for allowing excess air in the main server room 101 to escape to the attic 107. The opening ratio of the rectangular areas 302 and 303 is approximately 70%. Note that the opening ratio here refers to the proportion of the effective area of ​​openings through which air passes that are not blocked by louvers or the like, to the total surface area of ​​the rectangular area 302 or 303.

[0012] The chamber room 102 is a space for taking in outside air into the data center 100. The chamber room 102 also serves as a space for mixing the taken-in outside air with air in the attic 107 to reduce the humidity of the outside air. This adjustment of the humidity of the outside air is mainly performed in winter.

[0013] The chamber room 102 and the main server room 101 are separated by a partition plate 108. The partition plate 108 has multiple air outlets for blowing air from the chamber room 102 into the main server room 101. Specifically, the partition plate 108 is a perforated plate with an opening ratio of approximately 50%. The opening ratio here refers to the ratio of the effective area of ​​the dot-shaped openings to the total surface area of ​​the perforated plate.

[0014] The wind speed of the air blown into the main server room 101 from the air outlet of the partition board 108 is adjusted to 3.7 m / s or less. As the air blown into the main server room 101 spreads within the main server room 101, the wind speed drops to about 2 m / s. The reason for adjusting the speed of the air passing through the partition plate 108 in this way is to prevent water from flying away when condensation occurs and to reduce the impact on the health of workers in the main server room 101.

[0015] The chamber room 102 is provided with 16 intake fans 200 on the wall surface facing the partition plate 108. These 16 intake fans 200 are configured by arranging eight sets of intake fans 200, one above the other, at equal intervals in the horizontal direction. When driven, each intake fan 200 draws outside air into the chamber room 102. The air volume of each intake fan 200 is approximately 25,300 m 3 / h.

[0016] Four ventilation fans 110 are installed on the ceiling board 109 of the chamber room 102. These four ventilation fans 110 are installed at equal intervals along the longitudinal direction (north-south direction) of the ceiling board 109. Each ventilation fan 110 is driven mainly in winter, and when driven, it draws air from the attic 107 into the chamber room 102.

[0017] The uneven roof 103 includes a first roof 111, a second roof 112, and a vertical wall 113. The first roof 111 is a rectangular plate that slopes downward toward the west and covers part of the main server room 101. The second roof 112 is a rectangular plate that slopes downward toward the east and covers part of the main server room 101 and the chamber room 102. The upper edge of the second roof 112 is located lower than the upper edge of the first roof 111. The vertical wall 113 is a rectangular plate that hangs down from the underside of the first roof 111 and reaches the upper surface of the second roof 112.

[0018] A rectangular exhaust port extending in the longitudinal direction (north-south direction) is formed in this vertical wall 113. This exhaust port is an opening for exhausting air that has risen from the hot aisle 300. A vertical exhaust louver (in other words, louvers) 114 is attached to this exhaust port. When viewed along the direction in which the server rack row 104 is arranged (in other words, when the server rack row 104 is viewed along the short side (north-south direction) of the server rack row 104), the exhaust louver 114 and the exhaust port are located approximately directly above the hot aisle 300 (see FIG. 5). The opening ratio of this exhaust louver 114 is approximately 50%. Note that the opening ratio here refers to the ratio of the effective area of ​​the openings through which air passes that are not blocked by louvers or the like to the total surface area of ​​the exhaust louver 114.

[0019] Next, a pair of server rack rows 104 will be described with reference to Fig. 4. Fig. 4 referred to here is a perspective view showing an example of a pair of server rack rows 104. However, in this drawing, a portion of the front side of the partition plate 105 is omitted.

[0020] A pair of server rack rows 104 is made up of two server rack rows 104. One server rack row 104 is made up of ten server racks 400 arranged in a horizontal direction. One server rack 400 can accommodate ten servers 401 arranged in a vertical direction (up and down). The air volume of the cooling fans for each of the accommodated servers 401 is approximately 300 m 3 / h.

[0021] Each server rack 400 has ten air intake ports 402 formed on its front side. These air intake ports 402 are openings for taking in air to cool the servers 401. Each server rack 400 also has ten exhaust ports 403 formed on its rear side. These exhaust ports 403 are openings for discharging air that has cooled the servers 401 and become heated.

[0022] A pair of server rack rows 104 is formed by arranging two server rack rows 104 so that their back sides face each other. A partition board 105 is installed around the periphery of the formed pair of server rack rows 104. As a result, a hot aisle 300 is formed inside the partition board 105, and a cold aisle 301 is formed outside. In other words, a hot aisle 300 is formed on the exhaust side of the pair of server rack rows 104, and a cold aisle 301 is formed on the intake side. The partition plate 105 has openings formed at positions facing the air intake ports 402 of the server racks 400 so as not to obstruct the air intake.

[0023] A rectangular area 302 located approximately directly above the hot aisle 300 in the ceiling board 106 of the main server room 101 has multiple exhaust slits formed in it. The air rising from the hot aisle 300 flows into the attic 107 through these exhaust slits.

[0024] Next, the server cooling method of this embodiment will be described with reference to Fig. 5. Fig. 5 is a vertical cross-sectional view showing an example of a data center 100.

[0025] First, when the air supply fan 200 in the chamber room 102 is driven, the air supply fan 200 draws outside air into the chamber room 102. When the outside air flows into the chamber room 102, the static pressure in the chamber room 102 becomes higher than that in the main server room 101. Due to this pressure difference, the air in the chamber room 102 is blown out into the main server room 101 through the air outlet of the partition plate 108.

[0026] Air that flows into the main server room 101 flows along the cold aisle 301 and is eventually taken in by the servers 401. The air taken in by the servers 401 cools the servers 401 and is then discharged in a heated state to the hot aisle 300. The difference in temperature between this discharged air and the air in the attic 107 will be 10°C or more if the servers 401 are mainly GPU servers. Therefore, the air discharged into the hot aisle 300 rises, passes through the exhaust slits in the ceiling board 106, and flows into the attic 107. Note that a portion of the air that flows into the main server room 101 is not taken in by the servers 401, but flows as excess air into the attic 107 through exhaust slits provided in the ceiling board 106 above the cold aisle 301.

[0027] The air that flows into the attic 107 is guided to the underside of the first roof 111 and is exhausted from the exhaust louver 114. That is, the air is exhausted along the underside of the first roof 111. Therefore, heat is exhausted smoothly. As a result, the cooling performance of the data center 100 is improved compared to when such a structure is not provided.

[0028] When the ventilation fan 110 is driven, some of the air flows back into the chamber room 102. By returning some of the air to the chamber room 102 in this way, when the humidity of the outside air (for example, 90% RH) is higher than the humidity in the main server room 101, the humidity of the outside air can be lowered to approach the humidity in the main server room 101. In other words, the heat generated by the servers 401 can be used to adjust the humidity in the main server room 101. Conversely, if the humidity of the outside air is lower than the humidity inside the main server room 101 , the humidity of the outside air can be increased to approach the humidity inside the main server room 101 .

[0029] Next, a data center 600 according to a second embodiment will be described. 6 to 8 show an example of a data center 600 according to the second embodiment. Figures 6 and 7 are perspective views, and Figure 8 is a plan view. The data center 600 includes a main server room 601 , a chamber room 602 disposed adjacent to the main server room 601 , and a stepped roof 603 covering the main server room 601 and the chamber room 602 .

[0030] The main server room 601 has a space for arranging multiple server racks side by side. Eight server rack rows 604 are arranged in this space. The server rack rows 604 are arranged approximately parallel to and at equal intervals in the short direction (east-west direction) of the main server room 101. Of the eight server rack rows 604, two adjacent server rack rows 604 are arranged so that their back sides face each other, thereby forming a pair of server rack rows 604. A partition board 605 is installed on the periphery of the pair of server rack rows 604. This partition board 605 has a height that reaches from the floor to the ceiling board 606, and covers both end faces of the pair of server rack rows 604 in the longitudinal direction (east-west direction) and the front side of each server rack row 604. A hot aisle 800 is formed inside this partition board 605, and a cold aisle 801 is formed outside it.

[0031] An opening is formed in a part of the ceiling board 606 of the main server room 601. Specifically, a rectangular opening 802 is formed approximately directly above the hot aisle 800 (particularly the space sandwiched between a pair of server rack rows 604). This opening 802 is an opening for allowing air rising from the hot aisle 800 to escape to the attic 607. In the first embodiment described above, the hot aisle 300 is covered by an exhaust slit portion of the ceiling board 106, whereas in this second embodiment, the hot aisle 800 is not covered by the ceiling board 606. This makes it easier to exhaust the air heated after cooling the servers into the attic 607.

[0032] Additionally, exhaust slits are formed in part of the ceiling board 606 of the main server room 601. Specifically, multiple exhaust slits are formed in a rectangular area 803 extending along the western wall of the main server room 601. These exhaust slits are slits for releasing excess air inside the main server room 601 into the attic 607. The opening rate of the rectangular area 803 should be approximately 70%. The opening rate here refers to the proportion of the effective area of ​​openings through which air passes that are not blocked by louvers or the like, to the total surface area of ​​the rectangular area 803.

[0033] The chamber room 602 is a space for taking in outside air into the data center 600. The chamber room 602 and the main server room 601 are separated by a partition plate 608. The partition plate 608 has a plurality of air outlets for blowing the air in the chamber room 602 into the main server room 601. Specifically, the partition plate 608 is a perforated plate with an opening ratio of approximately 60%. The opening ratio of the partition plate 608 is 10% higher than the opening ratio of the partition plate 108 according to the first embodiment. Note that the opening ratio here refers to the ratio of the effective area of ​​the dot-shaped openings to the total surface area of ​​the perforated plate.

[0034] The wind speed of the air blown into the main server room 601 from the air outlet of the partition board 608 is adjusted to 3.7 m / s or less. As the air blown into the main server room 601 spreads within the main server room 601, its wind speed decreases to about 2 m / s. The reason for adjusting the speed of the air passing through the partition plate 608 in this way is to prevent water from flying away when condensation occurs and to reduce the impact on the health of workers in the main server room 601.

[0035] The chamber room 602 is provided with 16 air supply fans 700 on the wall surface facing the partition plate 608. These 16 air supply fans 200 are arranged at equal intervals in the horizontal direction. When driven, each air supply fan 700 draws outside air into the chamber room 602. The air volume of each air supply fan 700 is approximately 31,500 m 3This air volume is 6,200 m / h, which is larger than the air volume of the air supply fan 200 according to the first embodiment. 3 / hLarge.

[0036] Unlike the ceiling panel 109 according to the first embodiment, a ventilation fan is not installed on the ceiling panel 609 of the chamber room 602.

[0037] The reason why the opening ratio of the partition plate 608 is set to approximately 60% will now be described with reference to Fig. 38. Fig. 38, which will be referred to here, shows an example of an airflow path model of the data center 600. In the airflow path model shown in the figure, reference numeral 3800 indicates the air supply fan 700, reference numeral 3801 indicates the partition plate 608, reference numeral 3802 indicates the server 901, reference numeral 3803 indicates the ceiling plate 606, and reference numeral 3804 indicates the exhaust louver 613.

[0038] Symbol Q0 indicates the total air volume of the intake fan 700, symbol Q1 indicates the total air volume passing through the partition plate 608, symbol Q2 indicates the total air volume of the cooling fans of the server 901, symbol Q3 indicates the total air volume passing through the exhaust slits in the ceiling plate 606, and symbol Q4 indicates the total air volume passing through the exhaust louver 613.

[0039] The relationship between each air volume in this airflow path model is expressed by the following formula. Q0 = Q1 = Q2 + Q3 = Q4 (1) Here, if the punching plate area of ​​the partition plate 608 is S1, the opening ratio is a1, and the wind speed of the airflow passing through the openings in the punching plate is V1, the air volumes Q0 and Q1 are expressed by the following equations. Q0=Q1=S1a1V1 (2) By modifying this equation (2), the aperture ratio a1 is expressed by the following equation. a1=Q0 / (S1V1) (3)

[0040] Here, the air volume Q0 is as follows: 31,500m 3 / h×16 cars=504,000m 3 / h Let the area S1 be as follows: 30m×2.1m=63m 2 The wind speed V1 is set to 3.7 m / s. Note that this wind speed V1 should be 3.7 m / s or less. When this wind speed V1 is converted to hours per hour, it becomes 13,320 (= 3.7 × 3600) m / h.

[0041] Substituting these values ​​into equation (3), the aperture ratio a1 is given as follows: a1=504,000 / (63×13,320)≒0.60 For the reasons explained above, the opening ratio of the partition plate 608 is set to about 60%.

[0042] The chamber room 602 and the main server room 601 are separated by a fire shutter in the event of a fire.

[0043] The uneven roof 603 includes a first roof 610 , a second roof 611 , and a vertical wall 612 . The first roof 610 is a rectangular plate that slopes downward toward the west and covers part of the main server room 601. The second roof 611 is a rectangular plate that slopes downward toward the east and covers part of the main server room 601 and the chamber room 602. The upper edge of the second roof 611 is located lower than the upper edge of the first roof 610. The vertical wall 612 is a rectangular plate that hangs down from the underside of the first roof 610 and reaches the upper surface of the second roof 611.

[0044] A rectangular exhaust port extending in the longitudinal direction (north-south direction) is formed in this vertical wall 612. This exhaust port is an opening for exhausting air rising from the hot aisle 800. A vertical exhaust louver (in other words, louvers) 613 is attached to this exhaust port. When viewed along the direction in which the server rack row 604 is arranged (in other words, when the server rack row 604 is viewed along the short side (north-south direction)), the exhaust louver 613 and the exhaust port are located approximately directly above the boundary between the end of the hot aisle 800 on the chamber room 602 side and the cold aisle 801 (see FIG. 10 ). The exhaust louver 613 has an aperture ratio of approximately 70%. This aperture ratio is 20% higher than that of the exhaust louver 114 according to the first embodiment. Note that the aperture ratio here refers to the ratio of the effective area of ​​the openings through which air passes that are not blocked by louvers or the like to the total surface area of ​​the exhaust louver 613.

[0045] Here, the reason why the opening ratio of the exhaust louver 613 is set to about 70% will be explained with reference to FIG. First, when calculating the opening ratio, if the area of ​​exhaust louver 613 is S4, the opening ratio is a4, and the wind speed of the airflow passing through the opening of exhaust louver 613 is V4, the above-mentioned air volumes Q0 and Q4 are expressed by the following formulas. Q0=Q4=S4a4V4 (4) By modifying this equation (4), the aperture ratio a4 is expressed by the following equation. a4=Q0 / (S4V4) (5)

[0046] Here, the air volume Q0 is as follows: 31,500m 3 / h×16 cars=504,000m 3 / h Let the area S4 be as follows: 30m×2m=60m 2 The wind speed V4 is set to 3.3 m / s (so that it will not be affected by the outside wind). Note that this wind speed V4 should be 3.0 m / s or more. When this wind speed V4 is converted to kilometers per hour, it becomes 11,800 (= 3.3 × 3600) m / h.

[0047] Substituting these values ​​into equation (5), the aperture ratio a4 is given as follows: a4=504,000 / (60×11,800)≒0.71 For the reasons explained above, the opening ratio of the exhaust louver 613 is set to about 70%.

[0048] Next, a pair of server rack rows 604 will be described with reference to Fig. 9. Fig. 9 referred to here is a perspective view showing an example of a pair of server rack rows 604. However, in this drawing, a portion of the front side of the partition plate 605 is omitted.

[0049] A pair of server rack rows 604 is made up of two server rack rows 604. One server rack row 604 is made up of ten server racks 900 arranged in a horizontal direction. One server rack 900 can accommodate ten servers 901 arranged in a vertical direction (up and down). The air volume of the cooling fans for each of the accommodated servers 901 is approximately 600 m 3 / h. This air volume is twice that of the server 401 according to the first embodiment.

[0050] One server rack 900 has ten air intake ports 902 formed on its front side. These air intake ports 902 are openings for taking in air to cool the servers 901. In addition, one server rack 900 has ten exhaust ports 903 formed on its rear side. These exhaust ports 903 are openings for discharging air that has cooled the servers 901 and become heated.

[0051] A pair of server rack rows 904 is formed by arranging two server rack rows 604 so that their back sides face each other. A partition plate 605 is installed around the periphery of the formed pair of server rack rows 604. As a result, a hot aisle 800 is formed inside the partition plate 605, and a cold aisle 801 is formed outside. In other words, a hot aisle 800 is formed on the exhaust side of the pair of server rack rows 604, and a cold aisle 801 is formed on the intake side. The partition plate 605 has openings formed at positions facing the air intake ports 902 of each server rack 900 so as not to obstruct the air intake.

[0052] An opening 802 is formed in the ceiling board 606 of the main server room 601, substantially directly above the hot aisle 800. Air rising from the hot aisle 800 flows into the attic 607 through this opening 802.

[0053] Next, the server cooling method of this embodiment will be described with reference to Fig. 10. Fig. 10 is a vertical cross-sectional view showing an example of a data center 600.

[0054] First, when the air supply fan 700 of the chamber room 602 is driven, the air supply fan 700 draws outside air into the chamber room 602. When outside air flows into the chamber room 602, the static pressure in the chamber room 602 becomes higher than that of the main server room 601. Due to this pressure difference, the air in the chamber room 602 is blown out into the main server room 601 through the air outlet of the partition plate 608.

[0055] Air that flows into the main server room 101 flows along the cold aisle 801 and is eventually taken in by the servers 901. The air taken in by the servers 901 cools the servers 901 and is then discharged in a heated state to the hot aisle 800. The difference in temperature between this discharged air and the air in the attic 607 will be 10°C or more if the servers 901 are mainly GPU servers. Therefore, the air discharged to the hot aisle 800 rises, passes through the opening 802 in the ceiling panel 606, and flows into the attic 607. It should be noted that a portion of the air that flows into the main server room 601 is not taken in by the servers 901, but flows as excess air into the attic 607 through exhaust slits in the ceiling board 606 above the cold aisle 801.

[0056] The air that has flowed into the attic 607 is guided to the underside of the first roof 610 and is discharged from the exhaust louver 613. That is, the air is discharged along the underside of the first roof 610.

[0057] As described above, a substantially clockwise air flow path is formed from the chamber room 602 to the exhaust louver 613. By forming such a flow path, exhaust efficiency is improved, and as a result, heat exhaust efficiency is improved. In other words, the cooling performance of the data center 600 is improved.

[0058] Next, the airflow near the servers will be described with reference to Figures 11 and 12. Figures 11 and 12 shown here show an example of a pair of server rack rows 104 (604). Figure 11 is a perspective view, and Figure 12 is a side view. The following description is common to both the first and second embodiments. In the following description, the reference numerals of the second embodiment are added in parentheses.

[0059] The outer periphery of the pair of server rack rows 104 (604) is surrounded by a partition plate 105 (605). As a result, a hot aisle 300 (800) is formed inside the partition plate 105 (605), and a cold aisle 301 (801) is formed outside.

[0060] The air flowing through the cold aisle 301 (801) is taken into the servers 401 (901) through the air intakes 402 (902) of the server racks 400 (900). The air taken into the servers 401 (901) cools the servers 401 (901) and is then discharged in a heated state from the air exhausts 403 (903) of the server racks 400 (900).

[0061] A plurality of fin-shaped louvers 1200 are installed on the rear side of the server rack 400 (900). Each louver 1200 is inclined upward relative to the rear side of the server rack 400 (900), at an angle of approximately 45 degrees. Air discharged from the exhaust port 403 (903) of the server rack 400 (900) is guided upward by these louvers 1200. The air guided upward by the louvers 1200 rises within the hot aisle 300 (800) and eventually flows into the attic 107 (607).

[0062] Next, the overall structure of a data center 600 according to the second embodiment will be described with reference to Figs. 13 to 21. Figs. 13 to 21, which will be referred to here, show an example of the overall structure of the data center 600. Fig. 13 is a plan view, Fig. 14 is a south side elevation, Fig. 15 is a west side elevation, Fig. 16 is a north side elevation, and Fig. 17 is an east side elevation. Fig. 18 is a cross-sectional view taken along line AA in Fig. 17, Fig. 19 is a cross-sectional view taken along line BB in Fig. 18, Fig. 20 is a cross-sectional view taken along line CC in Fig. 18, and Fig. 21 is a cross-sectional view taken along line DD in Fig. 18.

[0063] The data center 600 is divided into a south area 1300 and a north area 1301 (see FIG. 13). An example of the south area 1300 has been described with reference to FIGS. 6 to 10. That is, the south area 1300 has a stepped roof 603 (see FIG. 19). This stepped roof 603 has a first roof 610, a second roof 611, and a vertical wall 612. A vertical exhaust louver 613 is attached to the exhaust port of the vertical wall 612.

[0064] The south area 1300 also includes a main server room 601 and a chamber room 602. The main server room 601 has space for arranging multiple server racks 900 (see FIG. 18). Note that the server racks 900 are not shown in the illustration. The chamber room 602 has 16 air supply fans 700 arranged on its east wall. The main server room 601 and the chamber room 602 are separated by a partition board 608.

[0065] On the other hand, the north area 1301 has a gable roof 1302 (see FIG. 20). The north area 1301 also has a goods sorting area 1801, a server room 1802, a conference room 1803, an office 1804, and a warehouse 1805 (see FIG. 18).

[0066] Next, the results of the airflow analysis of the first and second examples will be described with reference to FIGS. First, the temperature distributions in the first and second embodiments will be described with reference to FIGS. Figures 22 and 23 show examples of temperature distribution in Example 1. Figure 22 is a cross-sectional view taken along line X1-X1 in Figure 3, where Figure 22(a) shows the temperature distribution in summer and Figure 22(b) shows the temperature distribution in winter. Figure 23 is a cross-sectional view taken along line Y1-Y1 in Figure 3, where Figure 23(a) shows the temperature distribution in summer and Figure 23(b) shows the temperature distribution in winter. As shown in these figures, for example, the temperature at position P1 in hot aisle 300 is 51.0 to 53.0°C in the summer and 19.0 to 21.0°C in the winter.

[0067] Figures 24 and 25 show examples of temperature distribution in Example 2. Figure 24 is a cross-sectional view taken along line X2-X2 in Figure 8, where Figure 24(a) shows the temperature distribution in summer and Figure 24(b) shows the temperature distribution in winter. Figure 25 is a cross-sectional view taken along line Y3-Y3 in Figure 8, where Figure 25(a) shows the temperature distribution in summer and Figure 25(b) shows the temperature distribution in winter. As shown in these figures, for example, the temperature at position P2 in hot aisle 800 is 41.0 to 43.0°C in summer and 9.0 to 11.0°C in winter. These temperatures are 10°C lower than the temperatures in the first embodiment.

[0068] 26 and 27 show detailed examples of temperature distribution in the first and second embodiments. Figure 26 shows an example of detailed temperature distribution in Example 1. Figure 26 is a cross-sectional view taken along line Y2-Y2 in Figure 3, with Figure 26(a) showing the temperature distribution in summer and Figure 26(b) showing the temperature distribution in winter. As shown in FIG. 26, for example, the temperature at position P3 in the hot aisle 300 is 53.0 to 55.0°C in the summer and 19.0 to 21.0°C in the winter.

[0069] Figure 27 shows an example of detailed temperature distribution in Example 2. Figure 27 is a cross-sectional view taken along line Y4-Y4 in Figure 8, with Figure 27(a) showing the temperature distribution in summer and Figure 27(b) showing the temperature distribution in winter. 27, for example, the temperature at position P4 in hot aisle 800 is 41.0 to 43.0°C in the summer and 9.0 to 11.0°C in the winter. Comparing these temperatures with those in the first embodiment, they are 12°C lower in the summer and 10°C lower in the winter.

[0070] Next, the humidity distributions in the first and second embodiments will be described with reference to FIGS. Figures 28 and 29 show examples of humidity distribution in Example 1. Figure 28 is a cross-sectional view taken along line X1-X1 in Figure 3, where Figure 28(a) shows the humidity distribution in summer and Figure 28(b) shows the humidity distribution in winter. Figure 29 is a cross-sectional view taken along line Y1-Y1 in Figure 3, where Figure 29(a) shows the humidity distribution in summer and Figure 29(b) shows the humidity distribution in winter. As shown in these figures, for example, the humidity at position P1 in hot aisle 300 is 20.0 to 30.0% in both summer and winter.

[0071] As mentioned above, a ventilation fan 110 is installed on the ceiling panel 109 of the chamber room 102. This ventilation fan 110 is driven in winter, and when driven, it draws air from the attic 107 into the chamber room 102. Due to the operation of this ventilation fan 110, the humidity of the outside air in the chamber room 102 drops from 80-90% to 70-80%, as shown in Figure 28(b).

[0072] Figures 30 and 31 show examples of humidity distribution in Example 2. Figure 30 is a cross-sectional view taken along line X2-X2 in Figure 8, where Figure 30(a) shows the humidity distribution in summer and Figure 30(b) shows the humidity distribution in winter. Figure 31 is a cross-sectional view taken along line Y3-Y3 in Figure 8, where Figure 31(a) shows the humidity distribution in summer and Figure 31(b) shows the humidity distribution in winter. As shown in these figures, for example, the humidity at position P2 in hot aisle 800 is 30.0 to 40.0% in summer and 20.0 to 30.0% in winter. Comparing these humidities with the humidity in the first embodiment, it is 10% higher in summer and the same in winter.

[0073] 32 and 33 show detailed examples of humidity distribution in the first and second embodiments. Figure 32 shows a detailed example of humidity distribution in Example 1. Figure 32 is a cross-sectional view taken along line Y2-Y2 in Figure 3, with Figure 32(a) showing humidity distribution in summer and Figure 32(b) showing humidity distribution in winter. As shown in FIG. 32, for example, the humidity at position P3 in the hot aisle 300 is 20.0 to 30.0% in both summer and winter.

[0074] Fig. 33 shows a detailed example of humidity distribution in Example 2. Fig. 33 is a cross-sectional view taken along line Y4-Y4 in Fig. 8, with Fig. 33(a) showing humidity distribution in summer and Fig. 33(b) showing humidity distribution in winter. 33, for example, the temperature at position P4 in hot aisle 800 is 30.0 to 40.0% in summer and 40.0 to 50.0% in winter. Comparing these humidities with the humidity in the first embodiment, it is 10% higher in summer and 20.0% higher in winter.

[0075] Next, the velocity distributions of the first and second embodiments will be described with reference to FIGS. Figures 34 and 35 show examples of velocity distribution in the first embodiment. Figure 34 is a cross-sectional view taken along line X1-X1 in Figure 3, where Figure 34(a) shows the velocity distribution in summer and Figure 34(b) shows the velocity distribution in winter. Figure 35 is a cross-sectional view taken along line Y1-Y1 in Figure 3, where Figure 35(a) shows the velocity distribution in summer and Figure 35(b) shows the velocity distribution in winter. As shown in these figures, for example, the speed at position P1 in hot aisle 300 is 0.0 to 0.4 m / s in both summer and winter.

[0076] Figures 36 and 37 show examples of velocity distribution in the second embodiment. Figure 36 is a cross-sectional view taken along line X2-X2 in Figure 8, where Figure 36(a) shows the velocity distribution in summer and Figure 36(b) shows the velocity distribution in winter. Figure 37 is a cross-sectional view taken along line Y4-Y4 in Figure 8, where Figure 37(a) shows the velocity distribution in summer and Figure 37(b) shows the velocity distribution in winter. As shown in these figures, for example, the speed at position P2 in hot aisle 800 is 0.4 to 0.8 m / s in both summer and winter. Comparing this speed with the speed in the first embodiment, it is 0.4 m / s faster in both summer and winter.

[0077] The second embodiment described above is different from the first embodiment in the following respects. (1) The position of the exhaust louver 613 of the stepped roof 603 is closer to the chamber room 602. As a result, the entire hot aisle 800 is covered by the first roof 610. (2) The opening rate of the exhaust louver 613 has been changed from approximately 50% to approximately 70%. (3) The opening ratio of the partition plate 608 has been changed from approximately 50% to approximately 60%. (4) The cooling fan of server 901 has an airflow of approximately 300 m 3 Approximately 600m from / h 3 It has been changed to / h. (5) An opening 802 is formed substantially directly above the hot aisle 800 and is not entirely covered by the ceiling panel 606 . (6) Air volume of intake fan 700 is approximately 25,300 m 3 / h to approximately 31,500m 3 / h. As a result, the total air volume of the intake fan 700 is approximately 404,800 m 3 / h to approximately 504,000m 3 It has been changed to / h.

[0078] Due to change (1), the air rising from the hot aisle 800 is not impeded by the second roof 611. Therefore, the rising air does not flow between the second roof 611 and the chamber room 602 and stagnate, but is instead discharged through the exhaust louver 613. In other words, the exhaust is smooth. Change (2) allows the air rising from the hot aisle 800 to be more smoothly discharged to the outside. The change (3) increases the amount of airflow flowing from the chamber room 602 into the main server room 601. The change (4) improves the cooling performance of the server 901 itself. Due to the change (5), the air rising from the hot aisle 800 is discharged to the attic 607 without being obstructed by the ceiling board 606. This allows for smooth exhaust. Change (6) increases the volume of outside air supplied into the chamber room 602. As a result, the volume of air flowing from the chamber room 602 into the main server room 601 also increases, which in turn promotes exhaust of air from the hot aisle 800.

[0079] Due to these effects, as described above, the temperature in the hot aisle 800 is reduced by 10 to 12° C. compared to the first embodiment. In other words, the cooling performance of the data center 600 is improved.

[0080] 2. Variations The above embodiment may be modified as described below. 2-1. Variation 1 In the above embodiment, eight server rack rows 104 or 604 are arranged in the main server room 101 or 601. However, the number of server rack rows 104 or 604 to be arranged is not limited to eight. At least one server rack row 104 or 604 needs to be arranged in the main server room 101 or 601. If one server rack row 104 or 604 is arranged, a hot aisle is formed on the exhaust side of that one server rack row 104 or 604, and a cold aisle is formed on the intake side.

[0081] 2-2. Variation 2 In the above embodiment, the vertical exhaust louver 114 or 613 is attached to the exhaust port of the vertical wall 113 or 612. However, the type of exhaust louver attached to the exhaust port is not limited to the vertical type. Other types of exhaust louvers may also be attached to the exhaust port.

[0082] 2-3. Variation 3 The above-described changes (1) to (6) in the second embodiment from the first embodiment are not all essential, and one or more of these changes may be selected and adopted.

[0083] 2-4. Variation 4 In the first embodiment described above, an opening may be formed in the ceiling board 106 above the hot aisle 300 instead of the rectangular area 302 with multiple slits. By forming an opening, the air rising from the hot aisle 300 is not obstructed by the ceiling board 106, and is discharged more smoothly into the attic 107.

[0084] 2-5. Variation 5 In the second embodiment described above, one or more ventilation fans may be installed on the ceiling panel 609 of the chamber room 602. This ventilation fan is mainly operated in winter, and when operated, it causes air in the attic 607 to flow into the chamber room 602. As a result, the outside air supplied into the chamber room 602 mixes with the air in the attic 607, reducing the humidity of the outside air.

[0085] 2-6. Variation 6 In the above-described embodiments, the partition plate 108 or 608 may be configured so that the opening area of ​​its air outlet can be changed. By configuring it in this way, for example, in winter when condensation occurs, the opening ratio can be increased to reduce the airflow speed and prevent water from being blown in. Also, in summer when condensation is less likely to occur, the opening ratio can be decreased to increase the airflow speed, thereby increasing the air convection speed in the main server room 101 or 601 and improving heat exhaust efficiency.

[0086] 2-7.Other modifications The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with other configurations. The above-described embodiments disclose at least the configurations described in the claims. [Explanation of symbols]

[0087] 100, 600...data center, 101, 601...main server room, 102, 602...chamber room, 103, 603...uneven roof, 104, 604...row of server racks, 105, 605...partition board, 106, 606...ceiling board, 107, 607...attic, 108, 608...partition board, 109, 609...ceiling board, 110...ventilation fan, 111, 610...first roof, 112, 611...second roof, 113, 612...vertical wall, 114, 613...Exhaust louver, 200, 700...Air intake fan, 300, 800...Hot aisle, 301, 801...Cold aisle, 400, 900...Server rack, 401, 901...Server, 402, 902...Air intake vent, 403, 903...Exhaust vent, 1300...South area, 1301...North area, 1302...Gable roof, 1801...Shipping sorting area, 1802...Server room, 1803...Conference room, 1804...Office, 1805...Warehouse

Claims

1. A data center, Server room and a chamber room disposed adjacent to the server room; a stepped roof covering the server room and the chamber room; Equipped with the server room has a space for arranging at least one row of server racks side by side; When the row of server racks is arranged in the space, a hot aisle is formed on the exhaust side of the row of server racks, and a cold aisle is formed on the intake side of the row of server racks, the uneven roof is provided with an exhaust port for exhausting air rising from the hot aisle; The uneven roof is a first roof covering at least a portion of the server room and sloping downward in a first direction; a second roof covering the chamber room and sloping downward in a second direction opposite to the first direction, the second roof having an upper edge positioned lower than an upper edge of the first roof; a vertical wall that hangs down from the lower surface of the first roof and reaches the upper surface of the second roof, the vertical wall having the exhaust port formed therein; Equipped with The data center is characterized in that the first roof guides the air rising from the hot aisle along its underside to the exhaust vent.

2. 2. The data center according to claim 1, wherein an end of the hot aisle on the chamber room side is located substantially directly below the exhaust port.

3. 3. The data center according to claim 1, wherein an exhaust louver is attached to the exhaust port.

4. 4. The data center according to claim 3, wherein the wind speed of the air discharged from the exhaust louver is 3 m / s or more.

5. the chamber room is provided with an air supply fan on a wall surface thereof for supplying outside air into the chamber room; The chamber room and the server room are separated by a partition plate, and the partition plate has a plurality of air outlets for blowing air from within the chamber room into the server room. The data center according to claim 1 , wherein:

6. The data center according to claim 5 , wherein the partition plate is a punched plate.

7. 7. The data center according to claim 5, wherein the wind speed of the air blown out from the plurality of air outlets into the server room is 3.7 m / s or less.

8. 8. The data center according to claim 1, wherein the hot aisle is not covered by a ceiling panel.

9. 9. The data center according to claim 1, wherein the server room and the chamber room are separated by a fire shutter in the event of a fire.

10. The chamber room is provided with a ventilation fan on its ceiling panel for allowing air in the attic to flow into the chamber room.

10. The data center according to claim 1, wherein:

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