Patent ID: 8584477

Claim:
A method for cooling a data center, comprising: providing one or more air channeling sub-systems, at least one of the air channeling sub-systems comprising: a mechanical cooling section; and a direct evaporative cooling section downstream from the mechanical cooling section; channeling air through at least one of the air channeling sub-systems and into a room of the data center; and operating at least one of the air channeling sub-systems in an adiabatic mode when a set of control conditions for the adiabatic mode is met, wherein operating in the adiabatic mode comprises channeling cooling air through the direct evaporative cooling section to evaporate water into the cooling air, wherein in the adiabatic mode the cooling air is not cooled in the mechanical cooling section, wherein the set of control conditions for the adiabatic mode comprises a measure corresponding to supply air enthalpy being below a predetermined threshold.