HEPA filter selection requirements

I. According to the characteristics of the filtering equipment

What are the main characteristics of high-efficiency filtration equipment? Filtration efficiency, operating resistance, dust capacity, filtration airspeed, and processing air volume are all factors to be considered.
If conditions permit, we should choose filter equipment with high efficiency, low resistance, high dust capacity, moderate air speed, large processing air volume, easy installation, and low cost as far as possible.

II. According to the required purification standard

According to the purification standard required in the environment to determine the efficiency of the last level of air filtration equipment, a reasonable choice and combination of the efficiency of each level of equipment, if the indoor requirements are the general degree of purification, then you can take the primary filter; if the indoor requirements are the medium level of purification, the use of primary, medium-effect two-level filter combination can be; if the indoor requirements of ultra-clean purification, If the indoor requirements are super clean, then a combination of primary, medium and high-efficiency three-stage purification equipment should be used.

III. Measuring the dust content of outdoor air

Because the main operating principle of filtration equipment is to send the outdoor air into the room after certain filtration and purification, the dust content and dust characteristics of the outdoor air are very important data, especially when we use multi-stage purification and filtration, the reasonable choice of pre-filtration equipment must be the use of the environment, cost, energy consumption, maintenance and many other factors to be considered together.

IV. According to the nature of the dust-containing gas

The nature of the dusty gas to be treated is also a consideration in the selection, which mainly includes the temperature, humidity, acid, and alkali of the dusty gas and the quantity, because some filters can be used at high temperatures, while some filters can only operate at room temperature and humidity, so the acidity and alkali of the dusty gas and the quantity of air filters can play a good performance are very influential.