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In the vast majority of cases, the lower the air velocity, the better the filter will work.The diffusion (Brownian motion) of small particle size dust is obvious, when the air velocity is low, the airflow stays longer in the filter material, and the dust has more chances to hit the obstacles, so

The area of the filter material in a filter is called the " filtration area ".With the exception of a small number of low efficiency filters, the filtration area of a filter is often several, dozens, and sometimes up to a hundred times that of the windward side of the filter.Most of the captured

Chemical filters selectively adsorb harmful air molecules, rather than mechanically removing impurities as normal filters do.Chemical filters remove airborne gaseous contaminants. In the field of ventilation and air conditioning, chemical filters use activated carbon as the main filter material.

For many years, air conditioning designers have selected filters based on the user's environmental needs, and today more and more people are realising that the air conditioning system itself needs to be protected by a good filter.Using only low efficiency filters, air conditioning systems can

Selection method of Filter efficiencyGenerally, the terminal filter determines the cleanliness of the air, and the front-end filters only play a protective role, which protects the downwind end filters to prolong their service life, or protects the air-conditioning system to ensure its normal

Introduction to the principle of filtrationWhen fine particles touch a fixed object, the gravitational force between the two surfaces sticks them together, and this is how the filter works. Large particles move in the airflow in an inertial manner. When the airflow encounters an obstacle, the

Air Filter Filtration Grade StandardThe "filtration efficiency" of an air filter is the ratio of the amount of dust captured to the amount of dust in the original air.The meaning of efficiency may seem simple, but its meaning and value vary greatly depending on the test method. Among the factors