A duct silencer, also known as an attenuator, is a device installed within HVAC systems to reduce noise transmission through ventilation ducts. While they do not completely eliminate noise, they significantly attenuate it, ensuring a quieter environment. Duct silencers are commonly installed on the intake and discharge sides of fans or air handling units.
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Rectangular and Elbow Silencers: These are engineered to manage noise in commercial HVAC and industrial ventilation systems. They come with aerodynamic acoustic baffles filled with sound-absorbing, acoustic-grade material, ensuring maximum noise reduction with minimal pressure loss.
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Circular Silencers: Ideal for circular duct systems or inline axial fans, circular silencers are designed to match straight ductwork connections and casing geometry.
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Flexible Silencer Ducts: These ducts resemble ordinary insulated ducts but incorporate special sound-absorbing materials inside. They are generally designed as multi-layer structures, providing both noise reduction and thermal insulation.
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Film-Lined Silencers: Available in various shapes and sizes, these silencers are lined with specialized film to enhance noise attenuation and meet specific project requirements.
The primary benefit of duct silencers is their ability to reduce noise levels within HVAC systems. Depending on the type and design, duct silencers can achieve noise reduction levels of 10 to 20 dB/m, creating a more serene environment.
Duct silencers offer an optimized balance of acoustic and aerodynamic performance, ensuring efficient noise management without compromising airflow.
By reducing HVAC noise, duct silencers contribute to a more comfortable indoor environment, which is particularly important in spaces such as hotels, office buildings, hospitals, and opera houses where noise control is critical.
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