Phoenix NAP Mechanical Efficiency

Optimal Performance

The overall design of Phoenix NAP’s mechanical distribution system promotes efficiencies throughout. A prime example of this is the centrifugal chillers within the modular central plants, which use variable frequency drives (VFD) to exactly match chiller output to load requirements.

Optimized to run at part loads, the combination of centrifugal chillers and VFDs ensure systems operate at the highest levels of efficiency and provide enough cooling buffer to guard against any type of unforeseen outages.



Complementing the chiller efficiencies is the operation of Phoenix NAP’s Stulz Ultrasonic® humidifiers. Specifically developed to provide necessary humidification levels without adding any heat to the facility, the Ultrasonic units create a very fine vapor mist through use of a high-frequency signal. There is no heating or boiling of water required.

Subsequently, these humidifiers use 93% less electrical energy than more common humidifiers, require less wiring to run and reduce air temperature during operation. They also use deionized water to reduce maintenance for a cleaner, mineral-free humidification.

Further reinforcing consistent and efficient performance levels is the bi-directional closed water loop. By including a high number of isolation valves (one every two CRAH units) in the loop, Phoenix NAP is able to service and/or repair a section of it without disrupting flow.