Sound absorber
It is recommended to install our standard sound absorber in order to counteract the development of noise in conventional heating systems.
The optimum results from damping the noise across a range of frequencies ensure the necessary quietness.
The principle of the sound absorber is that the exhaust gases are conducted through a perforated tube, which is firstly wrapped with a stainless steel gauze and then it is embedded in mineral wool. A large part of the jointly flowing acoustic energy will be converted into heat within this insulating layer. It is recommended to install the sound absorber directly behind the burner that causes the noise. The installed layer can be laid not only horizontally and slightly inclined toward the exhaust gas (return flow of condensate) but also vertically. If needed, a compensator that is connected upstream minimizes the transmission of structure-borne sound through the wall of the exhaust gas conduit.
Our sound absorber is effectively used up to a nominal width of 600 mm with chamber resonators for heating systems that operate in conditions of negative pressure, e.g., 'blue burners', with their typical drumming noises in the range of low frequencies. Precise adjustment of the frequency and the limited possibility of installation that often occurs require that this sound absorber is designed individually. If acute spatial problems do not permit a sound absorber to be installed, then our core absorber for hanging in the chimney's orifice will be helpful. (It is required to consult the district's responsible chimney sweep).
We offer a service for measuring the sound-pressure level on site, followed by recording the measured results, together with proposing the solutions for reducing noise that is emitted by your heat-generating system.
We will gladly advise you.