Blade Dampers and Noise Generation

Noise generated in blade dampers

Sponsored Links

The noise generated in a single opposed blade damper can be estimated from the chart below:

blade dampers noise generation diagram

1 mm water = 9.81 Pa (N/m²) = 1 kg/m² = 0.0736 mm mercury = 0.9677x10^-4 atm = 0.00142 psi

The noise level depends on the volume flow through the damper and must be corrected according the table below:

Volume Flow (m³/h)	Noise Correction (dB)
100	-10
200	-7
500	-3
1000	0
2000	3
4000	6
8000	9
16000	17

Sponsored Links

Related Topics

Acoustics Room acoustics, acoustic properties - decibel A, B and C, Noise Rating (NR) curves, sound transmission, sound pressure, sound intensity, attenuation ..
Noise and Sound in HVAC Systems Calculate noise, sound and silencers in HVAC systems

Related Documents

Sound Power, Intensity and Pressure An introduction to decibel, sound power, sound intensity and sound pressure
Sound Power The definition of Sound Power Level and the Sound Power from some common sources as fans, jet engines, cars, humans ....
Fans and Sound Power Generation The Sound Power Level from fans depends on the motor power and the capacity of the fan - the static pressure and/or the discharged volume.
Calculate Decibel The logarithmic decibel scale is convenient when calculating resulting sound power levels and sound pressure levels for two or more sound or noise sources.

Sponsored Links

SketchUp Engineering ToolBox - Online 3D modeling!

Free SketchUp Engineering ToolBox - enabled for use with the amazing, fun and free Google SketchUp.

Search the ToolBox

© The Engineering ToolBox 2005

8 8 6

• Search this Site!

• Translate this Page!

Engineering Standards

Engineering Standards