Emerson adds advanced controls, variable capacity to data center cooling system

Data center managers seeking increased control and operating efficiency of their precision cooling systems may now deploy the Liebert Challenger 3000 with Liebert iCOM controls from Emerson Network Power.

November 13, 2009 -- Data center managers seeking increased control and operating efficiency of their precision cooling systems may now deploy the Liebert Challenger 3000 with Liebert iCOM controls from Emerson Network Power. The enhanced Liebert Challenger 3000 also has the ability to integrate an energy-efficient digital scroll compressor if chosen as an option.

The Liebert Challenger 3000 precision cooling system provides complete environmental control, including cooling, reheat, dehumidification, humidification and filtration. Its compact footprint suits it for facilities where space is at a premium. All of the system’s critical components are front-accessible, so the unit can be corner-installed or installed flush against other equipment. The unit also utilizes the environmentally-friendly refrigerant R-407C, making it compliant with the Montreal Protocol and the U.S. EPA Clean Air Act.

The addition of the Liebert iCOM control system enables up to 32 units to communicate and work together as a team to precisely control temperature and humidity across a room while optimizing the efficiency of the entire cooling system. The control system also enhances the reliability of the cooling system by allowing predictive, performance-based analysis. It displays real-time information, such as setpoints, environmental conditions, operational status and alarm conditions. In addition, two Liebert IntelliSlot card housings enable simple network management protocol (SNMP) or Web-based centralized monitoring, or monitoring via an existing building management system or Liebert SiteScan Web.

A digital scroll compressor, available in the self-contained system design, allows unit capacities to quickly adapt to changing room conditions. The technology is capable of responding to changes as small as +/- 1 degree Fahrenheit (Celsius) and +/- 1 percent RH (relative humidity).

“As a result of these enhancements, the Liebert Challenger 3000 can be more precisely matched to the exact requirements of a data center,” says Bob Blough, director of marketing, Liebert Precision Cooling, Emerson Network Power. “This approach has shown to be as much as 30 percent more efficient than traditional hot-gas bypass when the system needs to operate at a reduced capacity.”

The system is available in self-contained or split system designs, which enable the unit to be fitted with a variety of architectures. Cooling configurations include air, water, glycol, the company's Glycool product and chilled water. It is available in nominal ratings of 10.5 kW (3 tons) and 17.5 kW (5 tons) and in upflow and downflow configurations.

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