The process
Nuclear facilities hold buildings under controlled negative pressure with HEPA-filtered exhaust and conditioned supply. Fans are specified for reliability and filtration, with dampers that isolate zones.
The gas
Filtered, conditioned supply air through pre, fine and HEPA filters. The fan is selected against the filter pressure drop as it loads, at low noise.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| HVAC | Supply, return and exhaust fans for heating, ventilation and air conditioning of plant and office space. | Axial, backward inclined and forward curved |
| AHU | A packaged unit with fan, filters, cooling or heating coil and mixing box that conditions and delivers supply air. | Backward curved and forward curved |
| Ventilation Fan | Moves air through a plant or building for fresh air supply, heat removal and fume dilution where the system is ducted. | Backward inclined and forward curved |
| Fan Silencer | An absorptive silencer at the fan inlet, outlet or in the duct, cutting fan noise with minimum pressure loss.. | Silencer |