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3. Noise reduction
3.1 Helical and helical centrifuges
In view of their very similar acoustic behavior, we've included the noise reduction measures for these two types of fan in the same section.
The reduction of line noise, which is of particular concern at high speeds, typically above 2,500 rpm, is achieved by means derived from the analysis of noise generation mechanisms described above (§
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Similarity laws and empirical forecasting methods
Bibliography
Standards and norms
- Fans – Airflow testing on standardized circuits. - NF EN ISO 5801 - 2017
- Industrial fans – Determination of sound power levels under standard laboratory conditions – Part 1: General presentation. - NF ISO 13347-1 - 2004
- Industrial fans – Determination of sound power levels under standard laboratory conditions – Part 2: reverberation chamber method. - NF ISO 13347-2 - 2004
- Industrial fans – Determination...
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