Commercial Filters And Sound Control Flashcards
What’s the benefit when you reduce sound levels and clean air
Increase occupants comfort levels healthy work environment
The amount of acoustic and filtration result in What
Noise level air
cleaning level
How to eliminate vibration and noise
Spring isolator
Isolation hangers
Concrete filled base on rubber mounts and cork pads
what are inertia Bases used for
Pumps ,compressors and large centrifugal fans 
Isolation mounts consist of the following types
Isolation rails
Isolation bases
Inertia bases
Rooftop isolation rules
What base is designed for concrete mould
Interia bases
Freestanding
Restrain spring
Housed spring
Rubber in sheerAre isolators available for
Centrifugal fan
additional support is required what Spring should be used
Housed spring
For material to maintain Absorbent elements What not Has’s to be done
Not to be painted
What sound product is used to control in higher capacity ducts
K-27
How to attach acoustical duct lining
Adhesives pins clips and staples
Two types of available duct liner
Flexible
Rigid 
Who’s rules need to be followed when installing duct liners
SMACNA
Sound of Attenuation three feet long can absorb how any feet 
250 ft
Primary intended purpose for noise generators
For heating and cooling rather than performance of sound control
How many dB Can duct rumble reach
65 to 95
Air cleaning is accomplished by what kind of filters
Media filter
Electrostatic effect
Washing and scrubbing
Cell type washer remove how many airborne particle
70-90 percent
Two most common filter test
Dust spot
Weight test
Merv rating filters are based on
Worst case performance filter through six stages of dust loading
Earthly matter smaller than 100 µm would best be described
Dust
How many micrograms in a linear measure in 1 m
1 million
To be classified high-efficiency filter efficiency expert greater than
40%
Most efficient type air washer
Cell type
Transmission of sound for one opening through the ductwork be defined as
Cross talk
To prevent vibrations from floor mounts transmitting through floor you can use
Rubber mounts 
Particles from weeds trees flowers and other forms of will be described as
Pollen
Where are Attenuation is important
On both sides of the duct system
