Free Cooling Potential of Turkey for Datacenters

Electricity consumption for cooling in data centers is increasing rapidly. The heat released from equipment’s in datacenters is dischargedinto the room and room has to be kept at acceptable temperatures. Free cooling technology is more efficient way instead of usingconventional systems in cold regions to reduce the electricity consumption for cooling. It is useful to know the free cooling potential ofa location before installing the free cooling system. In this study, free cooling potential of six cities (Ankara, Antalya, İzmir, Erzurum,Konya and Trabzon) located in different regions of Turkey is investigated according to supply air temperatures from 15 ˚C to 21 ˚C.Then Power Usage Effectiveness (PUE) value of a datacenter with a free cooling chiller is calculated for each city by using the electricityconsumption measurements of cabinets and free cooling system conducted in a datacenter in Ankara, Turkey. Calculations show thatfree cooling system is convenient for Erzurum, Ankara and Konya with PUE values 1.23, 1.37 and 1.37 and the potential calculated tobe almost 100% for eight, six and six months respectively for different supply air temperatures 17 ˚C to 21 ˚C. In addition to coldclimates, free cooling system for Antalya in Tsat=19 ˚C is calculated to save 46% energy on annual basis.

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