HVAC Systems and Applications! - Resources, Tools and Basic Information for Engineering and Design.
Attenuation of sound in unlined sheet-metal ducts
Sponsored Links
The attenuation of sound in some common unlined sheet metal ducts at different frequencies can be taken from the table below:
| Attenuation (dB/m duct) | Octave band center frequency (Hz) | |||||
| Duct | 63.5 | 125 | 250 | 500 | 1000 |
2000 and higher |
| Round 100 - 300 mm | 0.1 | 0.1 | 0.1 | 0 | 0 | 0 |
| Round > 300 mm | 0 | 0 | 0 | 0 | 0 | 0 |
| Rectangular 150x150 mm | 0.65 | 0.65 | 0.5 | 0.35 | 0.35 | 0.35 |
| Rectangular 600x600 mm | 0.65 | 0.65 | 0.35 | 0.15 | 0.15 | 0.15 |
| Rectangular 1800x1800 mm | 0.35 | 0.35 | 0.15 | 0.03 | 0.03 | 0.03 |
Sponsored Links
Difficult to find your favorite ToolBox page? Add a link to the page in your own personal Shortlist!
Translate this page to
Spanish
French
German
Italian
Dutch
Norwegian
© The HVAC ToolBox
The content in The HVAC ToolBox is copyrighted but can be used with NO WARRANTY or LIABILITY. Important information should always be double checked with alternative sources. All applicable national and local regulations and practices concerning this aspects must be strictly followed and adhered to.
We appreciate any comments and tips on how to make The HVAC ToolBox a better information source. Please contact us by email if You find any faults, inaccurate, or otherwise unacceptable information.
5 12 1
View Engineering, Design and Construction news in the absolute FREE Automatic WebSite Viewer. Engineering Breaking News!
