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Smoke Extract - New Standard 

Application  Description | Traditional Solution 
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Traditional Solution
The operation of the smoke extract system can be simplified by using drives with axial fans that can be reversed. Additional dedicated fans are no longer required to operate the system, as the systemís main supply fan is now capable of carrying out the same function.

In the new design, the supply fan is sized for its smoke extract duty. This typically means oversizing the fan by about 30%. This allows the supply fan to cope with the extra air extraction requirements without the need for additional fans.   Under normal operation, the drive automatically compensates for the oversizing of the fan without increasing energy consumption.

During smoke extract operation, the driveís normal operation is switched to its smoke mode by a simple digital input.  The speed is controlled by either the central emergency control or directly by sensors.


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