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  1. #1
    Join Date
    Mar 2010
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    Vietnam
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    Sound pressure from fan



    Greeting.
    Hope to get your kind advise for the noise level in machinery spaces like generator room.
    For Example, I have one supply and one exhaust fan which have 85 dB(A). And the duct length is around 40 m. And the velocity in duct is 8m/sec. at the air terminal is 5 m/sec. Is there any formula to calculate the noise level caused by the ventilation system?Or we just need to consider room noise level is same as the fan noise level.

    Regards



  2. #2
    Join Date
    Sep 2007
    Location
    Split Croatia
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    Re: Sound pressure from fan

    Usualy, manufacturer of air terminals have some software which calculate that.

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