Emerson Network Power, announced three new models of its Liebert DSE room-based data center cooling system. The 80kW, 85kW and 150kW units will join the previously released 125kW unit, opening new applications for the product.

Steve Madara, VP, global cooling, at Emerson, said, “These new models give data center designers and managers more options to configure data center cooling that is scalable, reliable and economical.”

The system features Emerson’s EconoPhase pumped refrigerant economizer that delivers free-cooling without water-consumption costs or air-contamination concerns.

It cuts the utility cost associated with a traditional air-cooled direct-expansion system by 45%, according to the vendor. Compared to a typical chilled-water system with air economization, the utility cost is 15% lower, without introducing outside air into the environment, Emerson said.

The product also features tandem Copeland Scroll Digital compressors to optimize part-load efficiency, electronic expansion valves to support lower condensing temperatures and variable-speed electrically commutated plug fans that automatically adjust unit airflow to demand.

Integrated Liebert iCOM system adds intelligent control capabilities for dynamic airflow adjustments and quick adaptation to changing IT loads.