US2014244046A1PendingUtilityA1
Managing airflow provisioning
Est. expiryNov 11, 2031(~5.3 yrs left)· nominal 20-yr term from priority
F24F 11/80F24F 11/64F24F 7/10F24F 11/77F24F 11/46F24F 11/58F24F 11/52F24F 11/30H05K 7/20745F24F 11/89H05K 7/20836F24F 7/06F24F 11/0009
39
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Claims
Abstract
In an implementation, a method for managing airflow provisioning in an area comprising a plurality of racks, wherein a plurality of fluid moving devices are to supply airflow to the plurality of racks through a plurality of adjustable vent tiles, includes accessing a model that describes airflow transport and distribution within the area, said model comprising a plurality of parameters, determining values for the plurality of parameters, and implementing the model to partition the area into a plurality of fluid moving device zones of influence with a desired level of overlapping among the plurality of fluid moving device zones of influence.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method for managing airflow provisioning in an area comprising a plurality of racks, wherein a plurality of fluid moving devices are to supply airflow to the plurality of racks through a plurality of adjustable vent tiles, said method comprising:
accessing a model that describes airflow transport and distribution within the area, said model comprising a plurality of parameters; determining, by a processor, values for the plurality of parameters; and implementing the model to partition the area into a plurality of fluid moving device zones of influence with a desired level of overlapping among the plurality of fluid moving device zones of influence.
2 . The method according to claim 1 , wherein the model further describes effects of actuations on the plurality of fluid moving devices on the airflow transport and distribution within the area.
3 . The method according to claim 1 , wherein the model further describes effects of actuations on the plurality of fluid moving devices and the adjustable vent tiles on the transport and distribution of airflow supplied into the plurality of racks.
4 . The method according to claim 3 , wherein the model is described by the following equation:
T
(
k
+
1
)
=
T
(
k
)
+
{
∑
i
=
1
N
CRAC
g
i
·
[
SAT
i
(
k
)
-
T
(
k
)
]
·
VFD
i
(
k
)
}
·
{
∑
j
=
1
N
tile
b
j
·
U
j
(
k
)
]
}
+
C
,
wherein T represents a rack inlet temperature, k and k+1 represent discrete time steps, SAT i and VFD i are a supply air temperature and a blower speed of the ith fluid moving device, U j is the opening of the jth adjustable vent tile, N CRAC and N tile are the number of fluid moving devices and adjustable vent tiles, respectively, and wherein g i and b j are the parameters that capture influences of each fluid moving device i and adjustable vent tile j, respectively, and C denotes a temperature change.
5 . The method according to claim 1 , wherein implementing the model to partition the area into a plurality of fluid moving device zones of influence with a level of overlapping further comprises:
determining influence levels of the plurality of fluid moving devices on a plurality of rack inlet temperatures; for each of the plurality of rack inlet temperatures, calculating ratios between each of the determined influence levels and a largest influence level of the determined influence levels for that rack inlet temperature; and partitioning the data center into the plurality of fluid moving device zones of influence based upon the calculated ratios.
6 . The method according to claim 5 , further comprising:
setting an overlapping threshold value for the ratios, wherein overlapping threshold value is to substantially control the level of overlapping among the plurality of fluid moving device zones of influence.
7 . The method according to claim 1 , wherein implementing the model further comprises implementing the model to simultaneously control the plurality of fluid moving devices and adjustable vent tiles to manage airflow provisioning in the area.
8 . The method according to claim 7 , wherein implementing the model further to simultaneously control the plurality of fluid moving devices and adjustable vent tiles further comprises:
accessing a cost function; and determining a coordinated actuation of the plurality of fluid moving devices and adjustable vent tiles through use of the model to minimize the cost function while substantially maintaining rack inlet temperatures within predetermined ranges.
9 . An apparatus for managing airflow provisioning in an area comprising a plurality of fluid moving devices and a plurality of adjustable vent tiles, said apparatus comprising:
a memory storing at least one module comprising machine readable instructions to:
access a model that describes airflow transport and distribution within the area, said model comprising a plurality of parameters;
determine values for the plurality of parameters; and
implement the model to partition the area in to a plurality of fluid moving device zones of influence with a level of overlapping among the plurality of fluid moving device zones of influence; and
a processor to implement the at least one module.
10 . The apparatus according to claim 9 , wherein the at least one module further comprises machine readable instructions to:
determine influence levels of the plurality of fluid moving devices on a plurality of rack inlet temperatures; for each of the rack inlet temperatures, calculate ratios between each of the determined influence levels and a largest influence level of the determined influence levels for that rack inlet temperature; and partition the data center into the plurality of fluid moving device zones of influence based upon the calculated ratios.
11 . The apparatus according to claim 9 , wherein the at least one module further comprises machine readable instructions to:
access a cost function; determine a coordinated actuation of the plurality of fluid moving devices and adjustable vent tiles through use of the model to minimize the cost function while substantially maintaining rack inlet temperatures within predetermined ranges; and output the determined coordinated actuation.
12 . The apparatus according to claim 19 , wherein the model is described by the following equation:
T
(
k
+
1
)
=
T
(
k
)
+
{
∑
i
=
1
N
CRAC
g
i
·
[
SAT
i
(
k
)
-
T
(
k
)
]
·
VFD
i
(
k
)
}
·
{
∑
j
=
1
N
tile
b
j
·
U
j
(
k
)
]
}
+
C
,
wherein T represents a rack inlet temperature, k and k+1 represent discrete time steps, SAT i and VFD i are a supply air temperature and a blower speed of the ith fluid moving device, U j is the opening of the jth adjustable vent tile, N CRAC and N tile are the number of fluid moving devices and adjustable vent tiles, respectively, and wherein g i and b j are the parameters that capture influences of each fluid moving device i and adjustable vent tile j, respectively, and C denotes a temperature change.
13 . A non-transitory computer readable storage medium on which is embedded at least one computer program, said at least one computer program implementing a method for managing airflow provisioning in an area comprising a plurality of fluid moving devices and a plurality of adjustable vent tiles, said at least one computer program comprising computer readable code to:
access a model that describes airflow transport and distribution within the area, said model comprising a plurality of parameters; determine values for the plurality of parameters; and implement the model to simultaneously control the plurality of fluid moving devices and the plurality of adjustable vent tiles, said at least one computer program further comprising computer readable code to:
access to a cost function; and
determine a coordinated actuation of the plurality of fluid moving devices and adjustable vent tiles through use of the model to minimize the cost function while substantially maintaining rack inlet temperatures within predetermined ranges.
14 . The non-transitory computer readable storage medium according to claim 14 , wherein the model is described by the following equation:
T
(
k
+
1
)
=
T
(
k
)
+
{
∑
i
=
1
N
CRAC
g
i
·
[
SAT
i
(
k
)
-
T
(
k
)
]
·
VFD
i
(
k
)
}
·
{
∑
j
=
1
N
tile
b
j
·
U
j
(
k
)
]
}
+
C
,
wherein T represents a rack inlet temperature, k and k+1 represent discrete time steps, SAT i and VFD i are a supply air temperature and a blower speed of the ith fluid moving device, U j is the opening of the jth adjustable vent tile, N CRAC and N tile are the number of fluid moving devices and adjustable vent tiles, respectively, and wherein g i and b j are the parameters that capture influences of each fluid moving device i and adjustable vent tile j, respectively, and C denotes a temperature change.
15 . The non-transitory computer readable storage medium according to claim 14 , said at least one computer program further comprising computer readable code to:
determine influence levels of the plurality of fluid moving devices on a plurality of rack inlet temperatures; for each of the plurality of rack inlet temperatures, calculate ratios between each of the determined influence levels and a largest influence level of the determined influence levels for that rack inlet temperature; and partition the data center into the plurality of fluid moving device zones of influence with a desired level of overlapping among the plurality of fluid moving device zones of influence based upon the calculated ratios.Join the waitlist — get patent alerts
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