Energy Efficiency: Data Centers

Energy Efficiency

Maximizing Efficiency at
Our Two Largest Data Centers

 

We’ve implemented major energy efficiency upgrades at two of our largest data centers—in Salt Lake City, Utah, and Austin, Texas—during the last two years. These improvements have resulted in more than 6,599 megawatt hours in annual energy savings.

  • We installed a large, common air handling unit and ducting to supply outside air to 25 separate Computer Room Air Conditioning (CRAC) units, which enabled the use of outside-air economization for cooling, thus reducing the need to operate energy-intensive refrigeration compressors.
  • We upgraded the CRAC unites by replacing electric induction motors and belt-driven fans with highly efficient direct drive coaxial fans and variable-speed Electronically Commutated Motors (ECM).
  • At the Salt Lake City Data Center, we separated hot and cold aisles with partition panels and doors, providing physical air containment and maximizing the benefit of cool air flowing to the servers.
  • We installed temperature and pressure sensors in strategic locations and upgraded the electronic control system to monitor and maximize component efficiencies.
  • At the Austin Data Center, we replaced six large chilled-water refrigeration units with highly efficient magnetic-bearing units. We further enhanced efficiency by reprogramming the control system to continuously optimize water temperatures and flow rates.