40% of a data center's energy bill is from cooling equipment!!
The cooling infrastructure is a
significant part of a data center. The complex connection of chillers,
compressors and air handlers create the optimal computing environment,
ensuring the longevity of the servers installed within and the vitality of
the organization they support.
Yet, this current ecosystem has come at a price. The EPA's oft-cited 2007
report predicted that data center energy consumption, if left unchecked,
would reach 100 million kWh by 2011 with a corresponding energy bill of $7.4
billion. This conclusion, however, isn't strictly based on Moore's Law or
the need for greater bandwidth. Their estimate envisions tomorrow's
processing power will be addressed with yesterday's cooling strategies. The
shortcomings of these designs, coupled with demand for more processing
power, would require (10) new power plants to provide the juice for it all,
according to the report.
In light of this news, many industry insiders are turning a critical eye
toward cooling, recognizing both the inefficiencies of current approaches
and the improvements possible through new technologies. The information
contained herein is designed to assist the data center professional who,
while keeping uptime and redundancy inviolate, must also balance growing
demand for computing power with pressure to reduce energy consumption..
- Bypass air-Conditioned air that does
not reach computer equipment, escaping through cable cut-outs, holes under
cabinets, misplaced perforated tiles or holes in the computer room perimeter
walls-limits the precise delivery of cold air at the server intake.
- Hot air recirculation, where waste heat enters the cold aisle, ensures
that the cooling infrastructure must throw colder air at the equipment to
offset this mixing.
- Hot air contamination prohibits the air handlers from receiving the
warmest possible exhaust air, rendering their operation less efficient.
- Hot spots may persist as a result of all of the above
Data Center Applications can address these inefficiencies through
measurement, modeling, and analysis. These tools-including Computational
Fluid Dynamics (CFD) analysis, air velocity and pressure gauging, provide a
snapshot of your environment, pinpointing problem areas. Furthermore, real
time measurement provides an immediate analysis of your data center
environment. Often significant improvements are achieved with quick,
inexpensive remedies, like blanking panels and brush strips.