Data centers in high-temperature climates regularly exceed ASHRAE temperature guidelines. But before pouring more money and facility maintenance into a computer room air conditioner (CRAC), consider adiabatic cooling, according to Tech Target, which says a low-maintenance and low-energy adiabatic cooling system uses free cooling better than a CRAC system.
“Adiabatic cooling, often called evaporative cooling or swamp cooling, uses high temperatures against themselves,” says Tech Target. “As a gas expands, it takes in heat. The conversion from a liquid to a gas moves large amounts of temperature, which is where data center adiabatic cooling systems come in.”
An adiabatic cooling system compresses a gas into a liquid form with a mechanical pump, expelling the heat created, and then lets the liquid expand again, cooling a controlled mass of air, according to Tech Target.
A simple system exists in hot climates where a wet sheet is hung in a room. As the water evaporates, it takes in enough heat to cool the room.
Vendors already in this market include Munters, EcoCooling, Excool, Vent-tech, Coolerado and United Metal Products. Data center operators will be looking to replace expensive CRAC and other active cooling systems, which could attract energy management powerhouses such as Schneider, Emerson, and GE.