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|Synergy of energy-efficient and low-noise air cooling|
|Keywords: Noise, Efficiency, Design|
|Recent studies identified cooling fans as significant energy consumers within first-world economies (e.g., EU). New initiatives are in place to encourage development of highly efficient fans. Because a more efficient fan is generally quieter, it is usually possible to advance on both fronts simultaneously. This is welcome news for noise control, which by itself is often an insufficient motivation for improving a design. The Initiatives address the design of fans, but decreeing efficiency is not the same as delivering it: the benefits can only be realized if the fans are properly employed. Poor selection can erase the gains, and turbulent inflow can hamper performance. It is possible to achieve energy-efficient and low-noise air cooling, if type, diameter, number, inlet conditions and layout are considered along with efficiency for best results.|
|David Nelson, Principal Consultant