This paper focuses on the effect of the rack inlet
temperatures resulting from chilled air exhausting from
perforated tiles situated in both the hot and cold aisles
of a raised floor data center. Only the above floor(raised
floor) flow and temperature distributions were analyzed
for various flowrates exhausting from the perforated
tiles. A Computational Fluid Dynamic(CFD) model was
generated for the room with electronic equipment
installed on a raised floor with particular focus on the
effects on rack inlet temperatures of equipment heat
load, placement of air conditioning(A/C) units and
chilled air flowrates. Fourty racks of data
processing(DP) equipment were arranged in rows in a
data center cooled by chilled air exhausting from
perforated floor tiles. The chilled air was provided by
four A/C units placed inside a room 12.1 m wide x 13.4 m
long. Since the arrangement of the racks in the data
center was symmetric only one-half of the data center
needed to be modeled. The numerical modeling was
performed using a commercially available finite control
volume computer code called Flotherm(Trademark of
Flomerics, Inc.). The flow was modeled using the k-e
turbulence model. Results are displayed to provide
some guidance on the design and layout of a data
center.
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