Proper system design can mitigate noise and vibration levels from heating, ventilation and air conditioning (HVAC) systems. Meeting the sound expectations of building owners and occupants is important and can be particularly challenging when HVAC systems are located in close proximity to occupied spaces.
In HVAC systems, vibrations are the source of the noise, and management of those conditions is crucial for a quiet design. Systems that do not address vibrations could malfunction and create additional sounds.
Noise created by vibration can be related to ventilation equipment, but also can be related to rotating equipment or the air and fluid movement through ducts and pipes. To reduce sound, the vibrations produced by the mechanical equipment need to be limited. Solutions include rotating shafts or gears; utilizing thermal processes, such as combustion; or changing fluid dynamic, such as airflow, through a duct or fan interactions with air.
Other solutions include choosing the right location for HVAC systems and utilizing an acoustical modeling software to help evaluate the expected noise and vibration levels, determine the impact of alternative designs, and outline HVAC solutions.
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