Noise reduction Reduction AHU room
Noise reduction Reduction AHU room
(OP)
Hi Experts,
There is a need to achieve 62db Pressure levels inside an AHU room that handle 150K CFM.
Would sound attenutaor in the return line help or in the supply.
Since the work is warm shell, the ducting and further work outside the AHU is not in scope.
There is a mixing box planned hope that helps.
Please comment from your rich experience.





RE: Noise reduction Reduction AHU room
Why does it need to be this quiet in a mechanical room?
RE: Noise reduction Reduction AHU room
RE: Noise reduction Reduction AHU room
RE: Noise reduction Reduction AHU room
RE: Noise reduction Reduction AHU room
I thought about 1 inch thick rockwool acoustic lining all around the AHU shell. This when compared to lining around the room wall would reduce cost.
RE: Noise reduction Reduction AHU room
Will there be a need for lead lined sheetrock, as there is no fear of radiation. Lead could lead to higher weight. And lead being a heavy metal.
RE: Noise reduction Reduction AHU room
RE: Noise reduction Reduction AHU room
knowledge is power
RE: Noise reduction Reduction AHU room
Mixing box will not help at all, it will hinder. Physics.
Next will be proper selection of fan size and speed to get the design airflow and pressure without adding dampers, baffles etc. to burn off excess.
Achieving such a low noise in a mechanical room will be a difficult challenge, and really requires design from the beginning to do. I doubt that it will be possible if you are just trying to add band-aids on top of whatever equipment and ducting is already there.