Cooling systems for data centre operators
Free cooling is a method which uses low external air temperatures to assist in chilling water, mainly used for air conditioning in green data centres.
There are three types of free cooling available for data centre use. The first is air-side free cooling, whereby air from outside is inserted into the data centre directly through filters or indirectly through heat exchangers.
Secondly is adiabatic, which is combined with air-side free cooling. This method sees the air transferred to a chamber along with water evaporation to cool the air.
Lastly, Water-side free cooling is a cooling medium which circulates water directly though cooling towers rather than chillers or compressors.