Specifications

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Power and cooling capacity remain the top targets for ef ciency improvement and optimization of
cooling capacity is often the simplest way for data center operators to realize short term savings
and directly impact PUE
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Panduit Labs research con rms that raising the supply air temperature in a data center is one of
the most effective means to reduce energy consumption. In addition, higher return temperatures
enable a higher CRAH ΔT across the heat exchangers allowing the cooling system to operate
more ef ciently.
A key way to realize this energy ef ciency potential and enable maximum capacity utilization is to
eliminate the mixing of cold and hot air within the cabinet and at the room level delivering higher
return air temperatures to the cooling system and allowing higher room set points.
1°C rise in chiller water temperature translates into
3-4% cooling system energy savings
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3 How To Measure Energy Consumption In Your Data Center, Gartner Core RAS Research Note G00205428, 8 September 2010
4 Design Considerations for Datacom Equipment Centers ASHRAE 2005, ISBN 1-931862-94-X. Page 138