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When not selecting a centrifugal fan, the lower the noise, the better?

Release time: 2019/11/21 Clicks: 2267

With the normal operation of the centrifugal fan, the noise cannot be eliminated. Studies have shown that as long as the wind speed exceeds 0.75m / s, noise will be generated. Of course, the lower the wind speed, the less noise is generated. Noise is harmful pollution. In our design, we always want to reduce the noise of centrifugal fan equipment as much as possible. With the development of centrifugal fan technology, the noise pollution we can do is getting smaller and smaller.

Small noise is certainly good, but it must be balanced with its economy. The lower the required noise, the higher the cost of the centrifugal fan required. For every 10 dB reduction, the cost of the fan doubles (empirical value, non-linear). The noise of most centrifugal fans cannot be lower than 35dBA. Therefore, when selecting a centrifugal fan, it is not necessary to pursue low noise. It can be within a reasonable range acceptable to itself.

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