Innovative hybrid silencers with active noise control
Any client interested in this solution
Any industry where flow is used
Scope of work
Currently, KFB Acoustics is in the process of conducting a project consisting in the development and implementation of an innovative line of new generation silencers. The product will be used in all industrial flow installations with very high gas flow rates and temperatures up to 300 degrees Celsius. The fans that generate flows in such installations at the same time cause high noise levels in these ducts. At the other end of the duct, this noise in turn is radiated into the environment, propagating over long distances and reaching local homes.
This disrupts the comfort of life for people and animals in the vicinity of the plant. In conditions of extremely high temperatures and flow velocities, it is very difficult to design acoustic silencers for such ducts, which at the same time: withstand the unfavorable conditions in the duct, suppress noise to a sufficiently low level and introduce pressure drops not exceeding the permissible values. Commonly used baffle silencers can effectively fight noise in the medium and high frequency range (figure 1B). Their main disadvantage is the introduction of relatively large pressure drops to the system and often too little sound attenuation in the low frequency range. To achieve the desired results, baffle silencers must have large dimensions and large slits to meet the pressure drop requirements.
This is associated with high costs.