air filtration circulation and noise

How are filters tested for efficiency?

Dust spot, dust weight arrestance and fractional efficiency test.

Fibrous media filters will remove particles as small as 0.3 microns?

False. Fibrous filters will trap particles as small as 10 microns.

When do filters do they're best work?

Filters do they're best work at 50%

Pleated media filters will capture what sized particles?

3 to 10 microns

Electrostatic filters will capture what sized particles?

I'm the 10 microns range?

What does the term HEPA stand for?

High efficiency Particulate Arrestance

The efficiency of a passive electrostatic filters will ____ with a rise in humidity

Decrease

When there is no air movement in a large room the air will

Stratify and cause the air to become stagnant and stale

Noises below 70db will?

Have no effect on hearing loss at all

Exposure to indoor air pollutant is how many times great then outdoor pollutants?

100 times

What are three types of indoor pollutants?

1. Particulates

2. Bio aerosols

3. Volatile organic compounds

What are bio aerosols?

Particles of organic living matter such as bacteria, molds, fungi, dust and insect remains.

What are volatile organic compounds

Releasing of gases from man made products such as carpet, compisite wood products or household chemicals. (Jim's terms offgassing of new products introduced to the home such as a t.v)