There is a shortage of high efficiency HVAC filters that are capable of capturing sub-micron particles.
NWI has developed a multi-pronged approach to help increase the available capacity of filters that can be used as MERV 13 or higher but with a lower pressure drop.
Successful completion of this research will lead to new classes of high efficiency filter media capable of capturing viruses that can be deployed in existing infrastructure to mitigate the spread of the virus through the air.
The mechanical filtration efficiency was improved by ~50%.
Developed three unique structures for filtration based on spunbound technology
Gautam, S., Kumar, A., Tafreshi, H.V., & Pourdeyhimi, B., (2024) Designing Multi-Layer Electret filters via numerical simulation,
Gautam,S., Kumar,A., Tafreshi, H.V., Pourdeyhimi, B., (2023) A simple approach to simulate corona-charged electret filters. Journal of Aerosol Science, https://doi.org/10.1016/j.jaerosci.2023.106293
Jamali, M., Atri, S., Guatam, A., Saleh, M., Tafreshi, H.V., (2023) Macroscale modeling of electrostatically charged facemasks, Journal of Aerosol Science, https://doi.org/10.1080/02786826.2023.2203188
Gautam, S., Saleh, A.M., Tafreshi, H.V., Radney, J.G., & Pourdeyhimi, B., (2023) Macroscale Simulation of particle in electrostatically charged filters. Journal of Aerosol Science, https://doi.org/10.1016/j.jaerosci.2023.106212.
Macroscale Simulation of Loading Particles with Various Charge Distribution on an Assortment of Electrostatically Charged Filters
Pourdeyhimi, B., Presenter, ARP-06 A New Generation of High-Efficiency HVAC Filters That Can Be Used to Stop the Spread of Coronavirus through Recirculation of Air, NIIMBL National Meeting, Washington, D.C., July 28, 2022.
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North Carolina State University
