COLUMBUS, Ohio — Emerson Network Power, a business of Emerson, announced that the California Energy Commission (CEC) has approved the Liebert® DSE thermal management system with the EconoPhase Pumped Refrigerant Economizer for use in California data centers. The company said the Liebert DSE system uses no water and saves up to 50 percent of thermal energy through its patented design and advanced iCOM™ controls.

“The Liebert DSE system is a great environmental steward. When used in a typical mid-sized data center of 1 megawatt load, the Liebert DSE is significantly more efficient than current cooling systems, and eliminates the use of around 4 million gallons of water each year. If deployed broadly in California data centers, the Liebert DSE with EconoPhase could save hundreds of million gallons of water every year,” said John Peter Valiulis, vice president North America marketing, thermal management, Emerson Network Power.

The CEC has approved the Liebert DSE system with EconoPhase as a prescriptive economization option, as part of Title 24 of the CEC’s 2103 Building Energy Efficiency Standards for Residential and Non Residential Buildings, meeting the code’s requirements for energy efficiency and its prescriptive requirements for economizers.

The DSE system eliminates the need for any water in the heat rejection process and associated chemical water treatment, and it eliminates the risk of exposure to harmful waterbound bacteria. In addition, the Emerson modeling for the CEC compliance program demonstrated an 8-10 percent reduction in the data center Time Dependent Valuation measure, compared to the water economizer prescriptive option. The DSE system design also reduces or eliminates several of the power components associated with water economizers. In actual usage, Emerson said the entire Liebert DSE system has demonstrated thermal system energy savings of up to 50 percent over older legacy systems.

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Publication date: 9/29/2015

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