HVAC systems when installed, generates different levels of sound, depending on the design of application, its installation and equipments power source. There are a number of noise specific problems that are associated with different elements of the installation. In every case, the solution will vary depending on the application and the kind of noise problem in it. Also, for the solution to be more effective, simpler and more economical if implemented at the initial design stage itself. It is very essential for an individual to select right noise isolation or damping equipment that well suits your application. In case of a wrong selection, may also at times lead to the aggravation of the problem.
Always remember when seeking a solution for noise in HVAC installations it is necessary to
- Analyze the kind of noise problem faced in the application or equipment.
- Try Identifying the origin and transmission path of the noise in the machine or application
- select the best noise isolation equipment and Implement appropriate solution
Depending on how the sound is propagated, there are two kinds of noise
- Airborne sound
Airborne sounds as the name suggests, the noise is transmitted through air. The source is generally easy to identify and transmission is propagated directly via the air to the structure. Examples in HVAC installations include emissions from ventilation equipment, aerodynamic emissions, and sound transmission along the duct network. The sound produced in one room can be heard in another room.
- Impact sound
Impact sound is the result of the shock to the building structure that produces vibrations transmitted via the parts of structure elements. Typically the best example of these types of noise is vibrations produced by operating machinery, transmitted through their structural supports and parts.