Small Knowledge Of Air Filter Selection

Jul 03, 2020

The area of the filter material in the air filter is called the "filter area". Except for a small number of low-efficiency filters, the filtration area of a filter is often several times, dozens of times, and sometimes a hundred times the windward surface of the filter.

Most of the captured dust is concentrated on the windward surface of the filter material. The air filter has a large filtering area, which can hold more dust, and the filter has a long service life.

The filter area is large, the air velocity through the material is low, and the resistance of the filter is small.

Increasing the filter area is an effective way to extend the service life of the filter.

Experience has shown that for a filter with the same structure and the same filter material, when the final resistance is determined, the filter area is 50%, and the filter life will be extended by 70% to 80%; doubled, the filter life will be About three times the original.

With more filter materials, the price of air filters will increase accordingly, but the extent of the extension of filter life is definitely higher than the extent of filter price increases. In addition, the initial resistance will be reduced after the filter area is increased, and the energy consumption of the air conditioning system will be more or less reduced.

Of course, when increasing the filter area, the filter structure and site conditions must be considered. For example, a bag filter can increase the filter area by increasing the number of filter bags and the length of the filter bags. For traditional filters with partitions, you can discuss with our Dongguan Hongyuan the possibility of reducing the partition spacing to increase the number of filter paper folds. In a newly designed project, the kind of filter that can hold a lot of filter material should be selected.

The size of the filter soap has little effect on the efficiency of the filter. Some savvy contractors temporarily use a filter with a small filter area and a low price during the air-conditioning installation and commissioning stage, and then replace it with a filter with a large filter area and the original design when the project is completed.

Of course, for users, it is certainly cost-effective to choose an air filter with a large filtering area.