New Cooling Strategies for Greater Data Center Energy Efficiency

This post details specific strategies implemented at a second Facebook data center to improve energy efficiency, resulting in annual electricity savings of 2,876,360 kWh and a reduction in annual demand by 329 kW. Key strategies included extending air-side economizer use, elevating rack inlet temperatures from 51°F to 67°F, reducing excess air supply by replacing unnecessary perforated floor tiles with solid ones, implementing cold aisle containment, and optimizing server fan speeds. These measures significantly increased free cooling hours and reduced mechanical cooling demand.