What are Acoustic Silencers?
When it comes to reducing the noise that is generated by airflow, it becomes tricky for many domestic homes since you have to deter the air flow. However, many industries and plants have adopted sound silencers as the way out of minimizing the sound yet maintaining the air flow intact. Fortunately, the Australian market is rich in dealers of this noise reduction equipment who will gladly help you out when it comes to the selection of the silencer that suits your premises needs.
How an Acoustic Silencer Work
You may have learnt that sound travels in waves and the essence of acoustic silencers is to confine those waves and channel them through its duct. If you have been in wondering how you can turn your noisy office, house or industry into a quiet environment yet well ventilated, you got a solution; just install an acoustic silencer.
The duct of the silencer functions as a barrier preventing the larger amount of noise from escaping nevertheless there is some normal breakout noise. The amount of noise absorbed by the silencer depends on its silencer media, the open vacuum of the silencer, its length and the materials that have been used. Immediately after the sound has entered the silencer in form of waves, it expands heading to the acoustic media due to the perforations in the baffle.
There are numerous air pockets in the acoustic media which enhance molecules colliding so as to produce heat. Hence there is noise reduction in the process. The longer your duct is, the more the noise reduction can be achieved nevertheless you may increase the pressure drop. There should be a balanced pressure between the pressure drop allowed by your fan or the source of the noise and the level of resistance that the airflow creates in the silencer.
Application of Acoustic Silencers
The application of the silencer is one of the major deciding factors of the choice of the material and the specifications of your silencer. However, that should never worry you as long as you are in Australia where there are qualified engineers to advise you on the most suitable standard product tailored to suit your need. They come in different sizes, finishes, shapes, and even connection details. Most of the acoustic silencers come in two shapes: rectangular and circular.
The following are the major places where these silencers can be applied:
- Industrial process plant
- In boilers
- In furnace plants
- In incinerators and crematories
- In diesel engine exhaust systems
- Gas turbine and power generation plant
- Ducted ventilation
- Air conditioning systems
- Ventilation discharges and also intakes
- Reactive silencers
- Refrigeration plant
In industrial plants, acoustic silencers are used in the internal combustion engine exhausts, compressors, in pumps, and blowers etc. in addition to the reduction in the noise, the designs of these silencers take into account the volume of the air flow and the pressure. They should in no way affect the normal functioning of the industrial processes.
There are customisation and flexibility when it comes to these silencers. That’s why there are different models and shapes that satisfy differing noise, space and airflow requirements. Besides rectangular and circular acoustic silencers which are the most common, we have elbow or bent attenuators and crosstalk silencers. They come in different colours and appealing finishes. They can be made of either stainless steel or aluminium which is dependent on your environment. You don’t have any reason to lose your hearing; just apply acoustic silencers and you will be safe. These are part of Australian exhaust technology.