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Beirens - Motor Silencers
This type of silencer consists of a reactive + absorptive assembly in order to cover a wide range of frequencies. Depending on installation constraints, the different modules (resonator, absorbent wall, bulb...) can be dissociated. Moreover, to handle severe thermal and aeraulic constraints and thus achieve good mechanical durability for the absorbent materials, the latter are systematically protected by a layer of fibreglass and stainless steel perforated plating.
- Excellent acoustic performance at low, medium and high frequencies
- Adaptability according to needs
- BGood resistance to thermal and mechanical constraints
- Reduced pressure losses
- Materials: Steel 1.8946 (S355J0WP) or stainless steel 1.4307 (304L)
- Insulation: 50 mm mineral wool
- Finish: primary aluminium jacket (Isoxal)
- Condensation evacuation tubes
- Absorbent bulb
- 150 mm mineral wool absorbent wall
- Single or double-chamber resonator
- Materials: Stainless steel 1.4401 (316L) or other grades according to needs
- Insulation: 100 mm mineral wool or more
- Finish: aluminium painted jacket or stainless steel mirror-finish
- Connecting flange
- Anchoring: metallic frame, fixed point, sliding point, spring bracket, cradle, anchor foot and guy wires.
Helmholtz resonator
The Helmholtz resonator is used to capture sounds at a specific frequency (special cases). It is made up of an exhaust chamber connected to the main flue by a section referred to as the neck. The volume acts like a spring, activated by pressure fluctuations inside the exhaust or chimney, and dissipates the acoustic energy inside the flue.