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Jeremias® Exhaust Systems
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    2. Commercial Exhaust Systems
    3. Silencers
    4. Exhaust silencers

    Absorption silencer (ASD/AED)

    Broadband attenuation in the high and medium frequency range

    Mufflers that work according to the absorption principle achieve a reduction in noise, especially in the medium and high frequency range, through the use of open-pored, sound-absorbing material, e.g. mineral wool. The sound waves from the exhaust flow reach the mineral wool behind it through an internal perforated plate, where they are absorbed and the sound energy is converted into heat due to friction effects.

    All Jeremias absorption silencers are filled with non-flammable mineral wool. In order to protect these from fibers being discharged by the exhaust gas flow, a protective fleece is often incorporated between the perforated plate and mineral wool. Depending on the composition of the exhaust gases and the operating conditions, different materials are used to protect the mineral wool:

    TypforFabric typeFunction
    ASDBoilerStainless steel wool fleeceProtection against fiber discharge, permeable to condensate
    AEDEngines/CHPHigh temperature fabric/stainless steel wool fleeceProtection against fiber discharge, suitable for high temperatures
    AVDFans/BiomassResistant glass fiber fabricProtection against fiber discharge and contamination

    Special shapes

    Modular Silencer

    The ASD-B-ECO is the modular silencer in our range because it can be expanded as desired to include the ASE-ECO absorption elements for higher damping requirements.

    This silencer is intended for connection to the EW-AL-BI and EW-FU exhaust systems. As standard, it is supplied with seals, which can be removed for negative pressure operation.

    length element - silencer

    The ASS is a silencer specially designed for double-walled chimneys, which fits perfectly and almost inconspicuously into the overall appearance of an outdoor chimney. As standard, we offer two different length elements that can be used several times in a row depending on the noise reduction requirements. The ASS can be connected to all double-walled systems using special transition elements.

    Muzzle silencer / sound inslation cores

    The base plate of the ASM muzzle silencer can be subsequently placed on a brick chimney and secured there at any time. Mounted at the top, the ASM attenuates high and medium frequencies before they escape to the outside. The position of the silencer allows installation without serious cuts in the existing exhaust system.

    Sound insulation cores of the SDK type are also designed for subsequent installation in the chimney and contribute to the effective reduction of noise peaks. They are hooked into the mouth of the chimney from above. Installation is easy and can be done later at any time.

    Due to the increase in flow resistance, a new cross-sectional calculation of the chimney is necessary if sound insulation cores are subsequently installed.

    Space-saving silencers

    In the event that the premises do not allow the installation of a conventional absorption silencer, our space savers ASD-T and ASD-W represent alternative solutions.

    With the ASD-T silencer, the absorption body is installed vertically to the exhaust pipe, so that the component length of the silencer is a lot shorter than normal.

    The ASD-W can also save considerable space with its 90° angle shape.

    silencer with internal sound insulation core

    The ASD-SDK is a 2-in-1 absorption silencer with an integrated sound insulation core, which enables higher damping performance with the same space requirement. Even if the sound insulation core inserted in the middle of the “main silencer” has a cylindrical design and is flow-optimized, the higher flow resistance on the exhaust side must be taken into account.

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