Fresh Air Cooling in Data Centres: Overview of approach showing potential savings in operational costs

Author: Frank Wilman - Future-Tech

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Frank Wilman discusses the case for Fresh Air cooling, a method which has fallen out of favour in recent years. It is however a proven method of free cooling, employed by some of the biggest organisations in the past, and its now time that organisations re-discovered its benefits.

The method uses volume control dampers positioned in the exhaust air from the hot aisles, to modulate the temperature within the data center. During hot weather, the fans become the biggest user of power, and as such it is imperative to move as little air as is necessary to remove the heat. It is then that the dampers would automatically control the fan speeds through €˜EC' motors, ensuring the minimum power usage possible. Whilst reducing the power used, this also makes the distribution of servers completely flexible with the dampers and fans automatically adjusting airflow as and when the room is populated.

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