Three Unforgivable Sins Of Axial Flow Fan

9. Noise Reduction Strategies in High-Speed Axial Fan Design Axial ac fans, particularly high-speed or high-pressure models, are inherently prone to generating noise, which presents a significant engineering challenge in commercial and dc industrial fans applications1218. Fan noise is broadly categorized into two types: rotational (tonal) noise and broadband (turbulence) noise17. Rotational noise is caused by the regular passage of …

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