Reducing Costs and Optimizing Efficiency at a Tier 3 Data Center
At a massive 10 MW, the data center proved to be the perfect candidate for Design Build. After analyzing the cooling system’s energy performance, the team designed a custom retrofit solution that reduced the total annual electric consumption by 8.5 percent.
The team installed an RG Loop—a patent-pending waterside economizer developed by CLEAResult to maximize free cooling hours with seamless, automatic operation. To support the RG Loop, a 1,500-ton plate and frame heat exchanger was also installed, and the existing chiller plant systems were re-piped.
In addition, the team retrofitted 86 50-ton computer room air handling units (CRAHs) with variable-speed, electronically commutated (EC) plug fans. To precisely monitor and control the data hall cooling equipment, the team installed a combination of hard-wired and wireless rack temperature and under-floor pressure sensors. This reduced fan energy usage by over 80 percent.
Other energy-saving improvements included:
- Installing variable frequency drives on the condenser water pumps
- Modifying the cooling tower operation
- Reprogramming the chiller plant control sequence