A Green Proving Ground (GPG) 2011 ( a US government initiative) assessment of wireless sensor technology suggested that providing real-time, floor-to-ceiling information on humidity, air pressure and temperature conditions could enable data centre operators to improve
the energy efficiency of even well-managed data centres significantly.

The demonstration facility’s cooling load reduced by 48 percent, reducing total data center power usage by 17 percent. This represented an annual savings of 657 megawatt-hours, and an improvement in the data centre’s Power Usage Effectiveness (PUE) from 1.83 to 1.51

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