Atomizing
The process of spraying a fine mist of water
Bypass humidifiers
Humidifiers that use the difference in pressure between the supply and return ducts to moce air acress the humidifiers media
Containments
Unwanted particulate matter in air that may or may not lead to health problems
Electronic air cleaners
See electronic air filters
Electronic air filters
Electrically operated filters that offer multiple stage filtering as well as odor removal
Electrostatic air filters
Filters that capture particulates with electric charges opposite to that of the filter media
Element
see media
Extended surface filters
Filters that have pleated filter media to increase the surface area of the filter
Filter-backed return grill
Returm grill in the occupied space that supports an air filter
Filters
Means by which particulate matter is captured from the air
Filtration
process of removing particulate matter from the air
FLow-through humidifiers
Humidifiers that have a constant flow of water through them
Heat recovery ventilators
Mechanical ventilation systems that exchange air between the inside and outside of a structure while recovering heat from the discharged air
HEPA filters (high efficiency particulate arresters)
Filters capable of capturing a minimum of 99.7% of all particulate matter at least 0.3 microns in size
High efficuency particulate arresters
see HEPA filters
Humdufication
Processw of adding moisture to the air
Humdifiers
System components that facilitate the addition of moisture to an air sample
Humidity
amount of water vapor in an air sample
Media
Humidifier component that holds water and extends the surface area of the water
Mold
Microscopic organism that can cause allergic symptoms similar to those caused by plant pollen
Nanometer
Distance equal to 1 x 10 ^-9 meter, or 0.000000001
Pleated filters
see extended-surface filters
Pollutants
unwanted particulate matter in air that often leads to health-related problems
Relative humidity
Ratio that compares the amount of moisture in an air sample to the maximum amount of mositure the same sample of hold
Saddle valves
Two-piece valves that clamp around a domestic water line to provide supple water to the humidifiers
Stel filters
Permanent, cleanable air filters
Wick
Component part of a humdifier that increases the surface area of the water, increasing the efficiency of the humidifier