Heavy machinery seems to be everywhere today. Trains, construction equipment, and planes will all create some form of noise as they move about their routes. Machines within factories can also exude a lot of noise through exhaust alone. Controlling this noise is the job of the cowl silencer. Learn more about this innovative tool that makes life much quieter than before.
The basic design of an exhaust silencer is a spiral arrangement. Air enters through a single port where it funnels into an individual pathway. This conduit spirals around at least one time where the air exits through an alternate port.
As the air passes through the spiral, it gets progressively quieter. The first piece of science that creates the attenuation is reducing air turbulence through greater surface areas, states Science X Network. As the air moves into the exhaust silencer, it’s controlled by the conduit’s narrow shape. Turbulence declines as the air encounters more surface area along the walls to quiet it’s movement even further. A quiet exhaust becomes a reality.
How Sound Becomes Attenuated
The spiral shape itself isn’t the only source of attenuating power. Within the Cowl silencer is stainless-steel mesh and wool. These simple materials create friction against the air molecules. Because they dampen the sound effects entering the silencer, less noise exits the tool.
Cowl incorporates this low-cost material into their metal silencers so that the savings and quality can be passed down to the direct user. Your operational costs drop as a result. There are no moving parts or expensive internal mechanisms within the silencer. Simply install it, and complete the job at hand.
For some machines, the spacing is at a premium. Adding any new components onto the external surfaces is just not possible. The beauty of a Cowl tool is that the silencer remains hidden within the exhaust path. In fact, you may not realize that it’s there unless you’re told otherwise.
Most installations place the silencer close to the engine where the exhaust system begins. There can even be a reactive silencer attached alongside the Cowl. The resulting sounds are remarkably lower in volume.
Negligible Impact on Machine’s Functionality
Project managers are understandably concerned when any modification is made to their machinery. Adding a Cowl silencer to a machine shouldn’t conjure up any worries, however. Each product is entirely lightweight, reports Cowl. In fact, it has these features that are inherent to every product variation, such as:
- Half the weight of a standard, reactive silencer
- One-third the size of a basic silencer
Another benefit to the Cowl design is the normal airflow. Exhaust systems are designed to exude air. The engine needs this pathway so that incoming air can properly mix with the fuel. The air moving through the Cowl remains at about the same speed in comparison to a system without a silencer.
Choosing Applicable Decibel Ranges
Exhaust systems will all have their own sound levels or decibel ranges. One machine is simply louder than another. For this reason, choosing the right silencer for your application is key.
These tools are typically divided into two grades, including:
Residential-grade attenuation usually ranges from 22 to 28 decibels. The engine’s exhaust will be considerably quieter with these tools in place.
Critical-grade silencers attenuate even further with ranges between 28 and 33 decibels. Although these ranges may not appear too different from each other, the ears will notice the change. Choose between these silencers in order to make your job site a more comfortable place.
Reach out to our team at Motion & Flow Control Products today. We can answer your queries about Cowl silencers and associated products. Beef up your machinery’s compliance with Cowl silencers for every exhaust port. The environment and your neighbors will thank you.