An additional silencer for a machine room in the telecommunications sector

Acoustic challenge
The heart of a critical facility for the telecommunications sector, the machine room, was facing significant noise challenges. The old installation was beset by acoustic problems, particularly during the start-up of the generator set, when it made a lot of noise, particularly through its chimney.

Strategic approach
To solve the challenge, we proposed the installation of an exhaust silencer specifically designed to attenuate low frequencies and tackle the acoustic problems at source. The main objective was to comply with local regulations and improve operational efficiency and noise levels in the engine room.

Technical solution

• Adapting the room morphology
  To optimise the installation of the new exhaust silencer (model HA-SE-40/500), we adapted the morphology of the room. We designed a 180° elbow with an enlarged diameter to meet the pressure drop restrictions, thus ensuring optimal acoustic performance without compromising system efficiency.
• Innovative structural support
  To support the exhaust, we suspended a structural tubular cage from the roof, which not only provided robust support, but also meant that we could change the orientation of the exhaust to suit the specific needs of the project.
• Integrating the new silencer
  We carefully installed the new silencer (model HA-SE-40/500) to complement the existing structure and ensure effective sound attenuation. This approach reduced the noise emitted when the generator set was running and improved the overall sound quality of the machine room.

Results
The additional silencer proved to be the comprehensive solution needed to address the acoustic problems in the machine room. The results were quite remarkable: the noise level during genset start-up was significantly reduced, thus improving the workers' auditory experience and complying with local noise regulations.