Today’s article is a guest article submitted to us by Ron Burg of Mahan’s Thermal Products, experts and specialists in heat exchanger and silencer technology. It is a very good general overview of the choices in silencers, and we encourage you to visit their website. We hope you find it interesting:
No matter what industry it is or which application is being used, utilizing heat exchangers and other types of thermal products in your facility can make noise control an issue. Fortunately, there are many ways for you to cut down on sound attenuation in order to create a better work environment.
There are many different types and models of silencers. If you need assistance selecting a silencer, reach out to trusted professionals such as Mahan’s to help guide you through the process. Six main types of silencers are included below.
Absorptive Silencer: With its classic dissipative design, the absorptive silencer absorbs noise energy through its many types of fibrous packing materials. When sound waves travel through the areas between the fitted fibers, the noise is dissipated from the viscous friction. Absorptive silencers work well on high noise frequencies between 500 and 800 Hertz. Anything above or below this amount, and the silencer will not be as effective.
Blower Silencer: These types of silencers are frequently used in wastewater treatment facilities and industrial processing facilities. Blower installations are typically noisy, making blower silencers essential. When choosing a blower silencer, consider the size and proper type for the application. These two aspects are critical for effectively reducing noise. The size of the blower should be based on gas volume alone, while the design of the silencer must be chosen with the blower size and operating speed in mind.
Engine Exhaust Silencer: Exhaust silencers come in a variety of styles and configurations, and have different attenuation grades. While you can create custom engine silencers, there are also standard styles that you can choose from. Puck-style silencers and low-profile silencers are great for places with minimal vertical space. Puck-style silencers are shaped like a hockey puck. Low-profile silencers are shaped in a rectangular fashion and are best for engines with dual exhaust turbos spaced far apart. Because of their rounded side panels, low-profile silencers are excellent for acoustic performance. Puck and low-profile silencers can come in residential, critical, and hospital attenuation grades.
Industrial Fan Silencer: Many process plants and industries require air fans, force draft fans, and induced draft fans, and they usually need some sort of acoustical treatment to fit into OSHA requirements. There are silencers for all fan types, and many are cost-effective, thanks to computer-enhanced technology. The advantages of each type of fan silencer depends largely on the application, pressure drop, and how much space is available.
Vacuum Pump Silencer: These types of silencers are used to eliminate liquid from gas flow vacuum systems by using liquid ring vacuum pumps or rotary positive blowers. Vacuum pumps are usually loud and require a high-performance silencer.
Vent Silencer: Vent silencers are frequently seen in oil and gas facilities and also in chemical processing heat recovery systems. These systems usually require a pressure relief valve (PRV) and need a vent silencer to effectively silence high-velocity air, steam, and gas vents. Vent silencers can be easily customized to fit any system.
Since 1969, Mahan’s Thermal Products has strived to provide quality production and sale of heat transfer equipment. Mahan’s is dedicated to taking care of its customers at all times and values the long-term relationships it has established with dedicated clients. Whether you need cleaning, repair, or building services or are looking to purchase a superior product at a competitive price, Mahan’s can assist you with your thermal product needs.