Everything You Need to Know About Sound Attenuators
Have you ever been in a room and the noise from the fans and other equipment makes the room very uncomfortable for you to concentrate? Well, that’s not the case in all offices because some are enhanced by what we call sound attenuators also known as duct silencers, mufflers or sound traps. This equipment is typically designed to reduce the noise that is transmitted right from a certain source to the receiver. They are proven to be very effective in noise reduction. They are usually installed at the intake, at the discharge sides or at the receiver side of the noise generating equipment.
A sound attenuator is essential in absorbing unpleasant sound which is called noise. They have been basically made for purposes of reducing noise in any heating, ventilation and all systems that involve air conditioning. If you want a peaceful and quiet environment serene for meditation and effective office work, you just have no other option than to install sound attenuators. It is usual that a fan produces a lot of noise especially when it is traveling along ventilation ducts which in turn create an uncomfortable nature in your office or house. That’s why you need to employ these duct silencers.
Models of Sound Attenuators
Sound traps come along in different sizes, materials, and shapes. Some of their sizes range from 4, 6, 8, 12 to 16 inches. They come in rectangular and circular shapes. You are supplied this equipment depending on the place of application, that, they are supplied depending on your specification both for commercial and industrial applications.
Sound attenuators most are made from a galvanized sheet of steel and are filled with various materials (mineral fibre) that have the ability to absorb sound. That’s why mostly they are called dissipative silencers. Their inner duct usually comprises a perforated sheet steel/metal which covers the mineral fibre so as to prevent them from being eroded by airflow. There are basically two types of sound attenuators that are commonly used:
- Rectangular shaped attenuators
- Round sound attenuators
Rectangular shaped attenuators
They come in 3 basic sizes depending on their heights namely small, medium and large. They operate by keeping the flow of air in close contact with the sound absorbers. The more you increase the length and height of the sound attenuator the more the sound will be attenuated or decreased and the air pressure significantly dropped. Depending on their sizes they have different dynamic insertion loss, self-noise sound power ratings, and airflow performance.
Round sound attenuators
Their outer shell which is galvanized spiral pipe is larger than the inner perforated liner. The centre absorber has a spun metal head that is a cone-shaped tail for purposes of effective attenuation and optimum drop in pressure. These sound or noise attenuators are filled with an insulation of mineral fibre. They come in different diameter sizes and lengths which consequently determine their self-noise sound power, dynamic insertion loss, and their airflow performance.
Benefits of Sound Attenuators
Most of these sound attenuators are used in the ducting phase of an air conditioning system. They are basically used to decrease the sound waves intensity using the fibre materials stocked in them. They reduce the amplitude without affecting the waveform of the signal.
It is usual that air conditioners produce a lot of noise and that’s where attenuators come in to minimize it without affecting the space around. In addition, they are used as silencers for various blowers and fans. They are also used in cooling towers to reduce that high sound produced by those large machines.
If you are looking for a cool working environment then you should install a sound attenuator.