Noise standards behind the silencer
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What should be the noise standard for emissions from gas pipes such as steam pipes after installing silencers?
Our company uses multi-stage noise reduction, which results in high noise attenuation; the exhaust silencers can reduce noise by 35–40 decibels； The vent silencer can achieve 25–30 decibels.
Go and ask what the difference is between exhaust silencing and vent silencing **Are there any regulations regarding the exhaust noise after the silencer? Thank you!
Follow the **standard** at http://bbs.hcbbs.com/viewthread.php?tid=388194&highlight=%D4%EB%C9%F9
Is such a standard available? It should be the noise standards of the surrounding environment
High-pressure steam enters the pressure-reducing chamber after being regulated in flow within the silencer; after further expansion and pressure reduction in a large volume, it emerges as low-pressure steam. During this process, part of the internal energy of the steam stream is converted into sound energy of a certain frequency. Although the noise level is significantly reduced, exhaust noise often remains above the standard values due to various factors such as the exhaust stream deviating from the designed parameters. To this end, an acoustic insulation cover with a combined multi-material composite structure was designed externally for the noise reduction unit. This composite acoustic insulation cover is designed based on the spectral characteristics of the residual noise emitted by the noise reduction unit, in order to effectively absorb that residual noise. When installed as required, the total noise reduction can reach 36–42 decibels.