Which of the Liebert XD cooling modules is most energy efficient?
The XDO is the most energy efficient module. At the nominal capacity, the efficiency ratios for XDO and XDV are 17.5 W and 19 W input power per kW cooling, respectively. The efficiency ratios for XDH20 and XDH32 are 27 W and 40 W input power per kW cooling, respectively. The XD CoolFrame module does not include a fan.