What is a HEPA fan?
A HEPA filter is a specific type of high quality air filter that meets the HEPA filter standard, which is to remove at least 99.97% of particles from the air down to at least 0.3 microns in size.
How do I choose a HEPA filter fan?
When choosing the blower we have to make sure that it is able to transport the required quantity of air through the filter pad and the HEPA filter. We know the dimension of the HEPA filter and the required air speed in the working area (0,5 m/s) so we then can calculate the airflow per hour.
What does a fan filter unit do?
A fan filter unit is a motorised unit which supplies clean, filtered air to a cleanroom. Air is drawn via the fan, through a pre-filter and then through a HEPA or ULPA filter which filters the sub-micron particles ensuring a clean and processed air supply.
What is a HEPA 13 filter?
H13-H14 HEPA are within the highest tier of HEPA air filtration and are considered medical-grade. “A HEPA grade of H13 can remove 99.95% of all particles in the air measuring 0.2 microns in diameter, while a HEPA grade H14 removes 99.995%,” says Nagl.
What is HEPA grade filter?
It is an acronym for “high efficiency particulate air [filter]” (as officially defined by the U.S. Dept. of Energy). This type of air filter can theoretically remove at least 99.97% of dust, pollen, mold, bacteria, and any airborne particles with a size of 0.3 microns (µm).
Do HEPA filters reduce cfm?
Overly-Efficient Air Filters This is also known as HEPA filters. While good for standalone air cleaners and particular uses, this level air filter in the average home system drastically reduces airflow.
How do you calculate CFM for HEPA filter?
CFM = Length x Width x Height x (Air Changes per Hour) / 60 min. Calculating the CFM is measuring the air volume velocity and it is a relatively simple calculation. You need to know the length, width and height (measured in feet) of the given space as well as how many air changes per hour are required.
Can you put a HEPA filter on an air conditioner?
HEPA filters can be placed on AC units, in the duct work, and on air purifiers. While air purifiers are better than nothing, they clean only the air of the room in which they are placed.
What is FFU in cleanroom?
A fan filter unit (FFU) is a type of motorized air filtering equipment. It is used to supply purified air to cleanrooms, laboratories, medical facilities or microenvironments by removing harmful airborne particles from recirculating air. The units are installed within the system’s ceiling or floor grid.