Filtration principals
The Filtration Design Has Been Optimized Using the Following Filtration Principles:
Interception
Interception occurs when a dust particle follows the airstream but comes into contact with the filter yarn (fabric) as it passes around it. If the forces of attraction between the yarn and the dust particle are stronger than the tendency of the airflow to dislodge it, the particle will be removed from the airstream.
Diffusional Effect
As dust-laden air passes through the filter media, tiny particles do not precisely follow the airstreams. They are bombarded by air molecules, causing them to take an erratic path. This erratic path increases the likelihood that the particles will come into contact with the yarn and stay attached. This can reduce the spread of viruses and other microorganisms.
Straining
Straining occurs when the smallest dimension of dust particles is greater than the distance between the woven yarns. This further reduces the spread of viruses and other microorganisms.
Impingement
As dust-laden air passes through the filter media, the air tends to pass around the filter fabric. However, due to inertia, the dust particles do not follow the airstream and collide with the filter media. This causes the particles to fall out of the airstream or attach to the media, reducing the spread of common airborne viruses and microorganisms.
Collision Probability
This factor relates to the design of the filter media. It allows for the maximum number of opportunities for impingement to occur in the filter. The layering of our filter was designed to maximize this effect while also considering the impact on pressure drop.
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