Noise Control
Exhaust silencers for diesel and gas generator sets, CHP engines and gas turbines. Absorptive, reactive and combined designs, sized to your exhaust flow, gas temperature, permitted back-pressure and site noise limit.
Exterior Interior See It Inside
Drag the handle to compare the closed shell with the cutaway and see how the internal acoustic packing does its work.
Each unit pairs an absorptive section (mineral-wool splitters faced in perforated stainless) with reactive expansion chambers tuned to the engine's firing frequencies. The split between the two is set by your engine's octave-band data, so the low-frequency rumble of a diesel or gas genset and the high-frequency hiss are both brought within the limit. Where the site calls for it, a spark arrestor is integrated in the same casing.
Built To Your Specification
We start from your engine data sheet (exhaust flow, temperature and permitted back-pressure) and the site noise limit, then design, manufacture and commission a silencer that meets the target on site.
We review the engine's exhaust flow, temperature and permitted back-pressure, plus octave-band sound data or the site noise limit, to define the required insertion loss.
Acoustic and mechanical engineers size the absorptive and reactive elements, then produce GA and fabrication drawings for approval.
The unit is fabricated and quality-checked at our own production facility in Poland to the approved specification.
Units are shipped, installed and verified against the acoustic target, with documentation handed over on completion.
From the Knowledge Hub
A reciprocating engine produces low-frequency firing tones on top of broadband flow noise, and no single silencing principle handles both. Here's how each design works and how to match it to your engine's spectrum.
Read the articleCapabilities
What separates an Axces unit from a catalogue part.
Acoustic
Reactive, absorptive and combination designs tuned to your engine's measured octave-band spectrum, not a one-size class, engineered to the strictest site noise limits.
Flow
Flow paths verified by CFD so attenuation never pushes the engine past its permitted exhaust back-pressure or costs fuel.
Materials
Carbon, stainless and high-alloy steels rated to 550 °C continuous, selected for the gas stream and duty.
In-house
Acoustic and structural calculation, approval drawings and QA from a single source, one responsible partner.
Reference project
Confidential datacenter operator
Axces engineered one repeatable exhaust-silencer-and-chimney design and delivered it fourteen times, holding a hyperscale datacenter’s diesel backup gensets to 75 dB(A) at one metre, with self-supporting chimneys CE marked to EN 13084-7.
Applications
The same range serves very different duties. Each project is engineered to its noise limit and gas conditions.
Data centers
Silencers for emergency standby generators, engineered to strict urban and campus noise limits and often combined with the stack.
Read morePower generation
Single silencers to complete exhaust trains for gas-engine power plants, CHP units and gas turbines.
Read moreMarine & offshore
IMO-compliant exhaust lines for commercial vessels, ferries and offshore platforms.
Read moreOil & gas
Turbine and compressor-drive exhausts in refineries, terminals and pipeline stations.
Read moreIndustrial & EPC
Complete silencer and chimney packages delivered to EPC contractors as a single scope of supply.
Read moreSend us the engine data sheet (exhaust flow, temperature, permitted back-pressure) and your noise limit. We'll come back with a sized silencer and a guaranteed insertion loss.
