AXCES Industrial Exhausts Systems and Stacks

Silencer Types | Principles

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Silencer Types|Principles

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AXCES has a wide range that covers all applications and engine sizes. These silencers are divided in series depending on the application, damping technique and the desired damping levels.


Absorption Type

 

The noise is absorbed by specific acoustical fibre inside the silencer. The Absorption Type silencer is most effective in the middle and high frequency range.

 

Reflection Type


The noise is reduced by creating a gas flow through separate chambers in the silencer. The Reflection Type silencer is most effective in lower and middle frequency range.

 

Reflection|Absorption Type


The Reflection | Absorption Type silencers are based on a combination of absorption and reflection damping techniques in order to reduce the noise in the complete frequency range.


 

Silencer Types With Integrated Spark Arrestor


Axces silencers can be equipped with an internal spark arrestor. Axces spark arrestors are DNV and RMRS type approved.


 

Spark Arrestor with damping


Axces has a wide range of Spark Arrestors with Damping which can be mounted in the exhaust gas system. Axces spark arrestors are DNV and RMRS type approved.

 

Spark Arrestor



Axces has a wide range of separate Spark Arrestors which can be mounted in the exhaust gas system. Axces spark arrestors are DNV and RMRS type approved.


 

Silencer and Spark Arrestor Types

Axces Silencer

Pipe

Diameter

Demping

dB(A)

Spark

Arrestor

Demping

Type

Frequency

Application

ABS 1.5" - 20" -25 No Absorptive Mid-higher Main Silencer
ABS-IS 1.5" - 20" -25 Yes Absorptive Mid-higher Main Silencer
REAB 35 1.5" - 20" -35 No Reactive/Absorptive All ranges Main Silencer
REAB 35-IS 1.5" - 20" -35 Yes Reactive/Absorptive All ranges Main Silencer
REAB 40 2" - 20" -40 No Reactive/Absorptive All ranges Main Silencer
REAB 40-IS 2" - 20" -40 Yes Reactive/Absorptive All ranges Main Silencer
REAB 45 4" - 20" -45 No Reactive/Absorptive All ranges Main Silencer
REAB 45-IS 3" - 20" -45 Yes Reactive/Absorptive All ranges Main Silencer
REF 25 1.5" - 20" -20 No Reactive Lower Pre-silencer for extra low freq.
REF 45 1.5" - 20" -30 No Reactive Lower Pre-silencer for extra low freq.
CP 18 1.5" - 20" -18 Yes Reactive Lower SA with damping level
CP 24 2" - 20" -24 Yes Reactive Lower SA with damping level
CP 32 3" - 20" -32 Yes Reactive Lower SA with damping level
SA Spark Arrestor 1.5" - 20" - Yes None None Spark arrestor (SA)

 

Pipe Diameter

The silencer size is important as well as the pipe diameter of the exhaust system. We will calculate the optimal diameter and silencer for your engine.

A rough indication is given in this graph

Engine Power

(kW)

Exhaust Dimension

(inch)

0 kW - 35 kW 1.5
35 kW - 45 kW 2
45kW - 60 kW 2.5
60 kW - 100 kW 3
100 kW - 130 kW 4
130 kW - 200 kW 5
200 kW - 325 kW 6
325 kW - 475 kW 8
475 kW - 650 kW 10
650 kW - 850 kW 12
850 kW - 1.250 kW 14
1.250 kW - 1.500 kW 16
1.500 kW - 1750 kW 18
1.750 kW - 2.000 kW 20

 

Damping Level

  • The noise reduction varies from 18 dB (A) until 45 dB (A).

Frequency

  • The frequency range on which this silencer is most effective.

Application

  • Some silencers have a specific application where others can be used for more purposes.

Custom Made

  • AXCES can also produce specific Silencers. Custom made silencers are not described here.


More Info: Download The Silencers Catalogue (.pdf document) - all types of Silencers and Spark Arrestors


Silencers Downloads: Go to the Silencers Download section on axces.com


More Downloads: Go to the Download section on axces.com


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