Ducts are generally used in HVAC (heating, ventilation and air conditioning) systems. These ducts consist of central ventilation which is made of steel and an outlet made of aluminum or other materials. These ducts have the ability to supply air, exhaust air and return air. These ducts are used to ensure that indoor air quality is good and thermal equilibrium is maintained. The duct system, which is used for HVAC is called as duct work. Duct design plays an important role in HVAC systems. This design comprises of planning, optimizing, sizing, detailing and finding the pressure losses in duct system.
A duct system should be maintained perfectly to ensure that the air flow inside the building is proper. The air coming out of the duct system is generally powerful and emits a loud noise. Duct sound attenuators are special sound reducing equipment, which can be used along with duct systems.
These attenuators have the ability to compress noise and let out the air with silence. Although ducts are said to be individual items, these ducts use some special components like vibration isolators, take offs, volume control dampers, stacks heads and boots, air terminals and sound enclosures. All these components have their own functionality. Ducts are generally noisy, so they are covered with attenuators for reducing noise level. HVAC sound enclosures are systems that reduce noise pollution and have the ability to absorb unwanted sound generated from those sources.