Robust Piezoelectric Sound Source with Helmholtz Acoustic Amplification

This Phase II SBIR proposal responds to a CBD need for improved Acoustically Enhanced Impaction (AEI) air purification in support of low pressure drop filtration. Prior to the SBIR Phase I effort, a first generation/benchmark (AEI) system developed by Applied Research Associates, Inc. (ARA) demonstrated AEI functionality and the potential to significantly reduce the annualized operation filtration cost relative to comparable HEPA filtration systems. KCF"s SBIR Phase I work showedthrough new prototype fabrication and testingthat the first generation system can be significantly reduced the power consumption by a factor of 3.6 and overall size by a factor of 5, while still maintaining similar acoustic levels necessary for efficient aerosol impaction. The Phase II follow-on development effort will provide essential technical development to improve upon the Phase I work from a performance maximization and commercialization standpoint. Significant further improvements in the filter system are expected.