The moving airflow hits the filter material, and the fibers cause the airflow to bypass and generate slight resistance. The sum of the resistance of countless fibers is the resistance of the filter.
The filter resistance increases as the air flow increases. By increasing the Teflon air filter membrane area, the relative wind speed passing through the filter material can be reduced to reduce the filter resistance.
The filter creates resistance to the air flow. Dust accumulates on the filter and the resistance increases. When the resistance increases to a certain specified value, the filter is scrapped.
The resistance of a new filter is called “initial resistance”; the resistance value corresponding to the scrapped filter is called “final resistance”.
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