Especially in our big cities, public transportation is one of the areas having the highest human density. Existing filters used in the public transportation sector are simple dust holders made of fiber/felt, located in ventilation-holes.
These filters protect machines from coarse dust, not people. In addition, these filters, which have a coarse retention feature for 3.0 microns and above, lack the ability to block microorganisms at a size of 0.12 microns, such as Covid 19, etc.
PUBLIC TRANSPORTATION SECTOR APPLICATIONS
Bus and train
with closed circulation