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Filter Control - Application Description

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Application Description
Filter control systems are a special type of constant air volume (CAV) system often found in hospitals, laboratories, and other institutions where clean air is essential. They are employed wherever conditioned air must be filtered just before delivery to the occupied space in order to prevent contamination of a controlled zone.

The Situation
The CAV supply fan blows the air across heating and cooling coils as required and through special micro filters. These filters remove contaminants from the air before it enters the controlled zone. Exhaust fans, sometimes also fitted with filters, remove the air from the zone and channel it to the outside. These fans 
need to be sized to provide design flow even when the filter is dirty and has its maximum resistance.

 

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