Vertiv introduced the Liebert DSE Optimization, an enhanced version of the water-free Liebert DSE data center cooling system. The company says the new version increases the system’s efficiency by up to 50 percent.

The Liebert DSE Optimization is a new enhancement to Liebert iCOM™ unit controls used by the Liebert DSE. It optimizes the operation of the condenser fans, compressors, and refrigerant pumps to further reduce power consumption. For instance, the company said applying the optimization upgrade to a 125kW Liebert DSE operating at 50 percent load in San Jose, California, would result in energy savings annually of around 27 percent per unit. 

As colocation customers have consolidated equipment in data halls, rack densities have increased. Vertiv is aiming to address that challenge by using cold aisle containment and the Liebert DSE freecooling units to provide more focused cooling at higher efficiency.

The Liebert DSE uses water-free pumped refrigerant economization. According to Vertiv reps, water use across the data center industry is a growing concern for a variety of reasons, including availability and cost of water, maintenance and upkeep of pumped water systems, and concerns about the proximity of water to sensitive electronics. Data centers using chilled water systems use approximately 6.75 million gallons of water annually per megawatt capacity. The Liebert DSE is approved for use in California, to comply with California Energy Commission standard Title 24, Part 6.