Precision Air Conditioning (PAC) for Data Centers & Server Rooms

Protecting High-Density IT Infrastructure

Standard comfort air conditioning is designed to keep humans comfortable, running for 8 to 12 hours a day and managing a mix of sensible heat (temperature) and latent heat (humidity). Data centers and IT server rooms, however, require Precision Air Conditioning (PAC)—also known as CRAC (Computer Room Air Conditioning) units—engineered to run 24/7/365, managing massive sensible heat loads with zero tolerance for failure.

1. The Sensible Heat Ratio (SHR)

Servers generate pure, dry heat. They do not sweat or breathe.

• A standard AC has an SHR of roughly 0.65, meaning 35% of its energy goes into removing humidity.
• A PAC unit boasts an SHR of 0.95 to 1.0, dedicating nearly 100% of its massive cooling capacity strictly to lowering the room temperature, preventing the costly over-dehumidification that generates dangerous static electricity.

2. Extreme Humidification Control

If a server room drops below 40% relative humidity, static electricity builds up rapidly. A single static discharge from a technician's hand can fry a multi-lakh core router. PAC units feature built-in electrode steam humidifiers to instantly inject pure water vapor back into the airstream to maintain the exact 45%-50% safe operational threshold.

3. Under-Floor Air Distribution

Modern data centers utilize raised flooring. The PAC units blast freezing air downward into the floor plenum, pushing it up through perforated tiles directly into the intake fans of the server racks. Managing the static pressure beneath the floor tiles ensures no hot spots develop in high-density blade servers.

Guarantee zero downtime for your IT assets. Request a Precision Air Conditioning audit from Prime Cool.