Emerson rear-door heat exchanger now available

Emerson Electric Power on Thursday announced the general availability of the Liebert XDR, a rear-door heat exchanger that removes heat from IT racks before it ever enters the data center. A version of the product has shipped from Sun Microsystems as the SCD5600 for about a year. The heat exchangers are mounted in a moveable door, which is fixed to a frame attached to the rear of the rack. It relies on server fans for hot air movement across a cooling coil, utilizing a pumped refrigerant that is 700% more efficient at removing heat than water. The pumped refrigerant also eliminates danger of equipment damage from water leakage, and air exits the rack at the same temperature it enters, simplifying data center cooling.