General comment

For all duties, the higher initial cost of backward bladed fans can usually be recouped many times over during the life of the unit, as the energy consumption will often be reduced by 25% compared with forward curved fans. Driving motors will also be smaller, and as the fans have a non-overloading power charac­teristic only a small margin is necessary over the absorbed power.

Posted in Fans Ventilation A Practical Guide


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