A New Approach for Enhancing Supply Air Filtration

A new approach for enhancing supply air filtration has been developed. The method is based on an advanced filtration unit against aerosol and gaseous contaminants designed for installation near supply air outlets. The performance of the filtration unit was measured in the laboratory. The results showed that the filtration efficiency for submicron particles was over 95% during the whole lifetime of the filter. The initial removal efficiency of the adsorbent filter for toluene was also high, over 95%. An important advantage is the high efficiency with a low pressure drop that allows the filter to be installed in existing HVAC systems without extensive modifications. With the aid of the filter, protection against harmful or hazardous air contaminants can be improved energy efficiently in specific rooms or areas of a building.

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