The work began in early March 2009, with a kickoff meeting for everyone involved in the project. A June 15 deadline was set but the job was completed three days early. Garbus remarked, “We had absolutely zero impact on our customers’ transactions and the operation of the data center. We never lost chilled water flow or temperature control, and we completed all of this during normal work hours.
Thanks to the Systecon VariPrime and Tracer Summit BCU upgrades, Cyxtera has better, more precise control of the data center chiller system and is reaping huge energy savings. For example, instead of running all 10 data center chillers at full load all the time, only three chillers on each tower are typically running at any given time—delivering significant energy savings and an 18-month payback for the project. When we analyzed this system, the data center chillers were running at 100 percent capacity and although the design called for 45-degree chilled water, it was delivering 34 to 35-degree chilled water.
In addition to improving the control system, this was a huge energy saving opportunity! We can now match data center chiller capacity to the exact cooling load and reset chilled water temperature back to the original design specifications. As a result, energy consumption dropped from about 2.0 kW per ton of cooling to 1.3 kW per ton, saving about $177,000 per month in energy costs. The project also qualified for $35,000 in rebates from the local utility company. Plus, the data center now has immediate backup capacity if any of the 10 chillers fail.”