HVAC ventilation silencers: optimize air network acoustics without increasing pressure drop

Dealing with noise in HVAC networks therefore represents a major technical challenge. Operators need to effectively reduce noise emissions while maintaining optimum aeraulic performance. Poor acoustic management can lead to excessive pressure losses, degrade energy performance and compromise occupant comfort.
To meet these challenges, industrial acoustic solutions must combine acoustic engineering, aeraulic optimization and customized integration.

• The acoustic challenges of HVAC networks in industrial environments
• Industrial ventilation silencers: reconciling acoustics and energy efficiency
• Technologies for noise abatement in air networks
• Integration with other acoustic equipment
• Groupe BOËT expertise in industrial acoustic solutions
• Conclusion

1. Acoustics in industrial HVAC systems

Ventilation networks in industrial buildings, data centers, energy infrastructures and commercial buildings produce noise emissions linked to a number of phenomena. Air turbulence in ducts, mechanical vibrations from fans, resonances in air distribution networks…
Without appropriate solutions, these noises can propagate through building structures and generate significant acoustic discomfort.

Noise control is therefore a regulatory and operational requirement. It calls for the installation of acoustic reduction systems capable of attenuating critical frequencies while preserving airflow.

2. Industrial silencers for ventilation: reconciling acoustics and energy efficiency

In HVAC networks, noise reduction must be achieved without compromising system performance.

Conventional acoustic solutions can increase pressure losses and lead to higher energy consumption. This is why acoustic silencers need to be designed using a global approach combining industrial acoustic studies and aeraulic modelling.

Groupe Boët develops industrial ventilation silencers specifically designed to optimize the acoustic management of air networks:

• SVR silencer for rectangular networks
• SVC silencers for circular networks

These industrial acoustic treatment systems are designed on the basis of acoustic analyses and 3D simulations to optimize both sound attenuation and pressure losses.

3. Technologies for noise abatement in air networks

Silencers for industrial installations incorporate various technologies designed to improve sound attenuation while maintaining high aeraulic performance.

High-performance sound-absorbing materials

Silencers use sound-absorbing materials capable of capturing sound energy and limiting noise propagation in ducts. These materials can include :

• acoustic mineral wool
• acoustic foam
• absorbent panels
• soundproofing components for industrial environments

Optimized aeroacoustic design

Performance is also based on a specific design:

• precise sizing according to air flow rates
• pressure drop optimization
• integration into existing networks
• compatibility with harsh environments

Industrial silencers can incorporate technical options such as :

• anti-corrosion coatings
• mechanical protections
• resistance to high temperatures up to 450°C

These acoustic technologies for industrial sites deliver sound attenuation of up to 50 dB(A) while maintaining low head losses.

4. Integration with other acoustic equipment

In some complex industrial plants, noise reduction requires the installation of additional acoustic equipment.

Solutions can include :

• Acoustic enclosures for fans
• Acoustic panels and partitions
• Acoustic grilles or acoustic louvers
• Acoustic doors for technical rooms
• Sound-absorbing materials for wall treatment

These acoustic protection systems contribute to the overall acoustic management and sustainable reduction of noise pollution in industrial buildings.

5. Groupe BOËT expertise in industrial acoustic solutions

Groupe Boët has recognized expertise in the design of industrial acoustic treatment systems for the most demanding sectors: industry, energy, nuclear, data centers and technical infrastructures.

The proposed solutions are based on :

• a global approach combining industrial acoustic studies and airflow engineering
• custom-designed for every installation
• robust construction using durable industrial materials
• compliance with international standards

Groupe Boët has an ISO 9001 and ISO 19443-certified management system, and complies with the main building codes: EN 15085, ASME, RCC-M, CODAP and CODETI.

This expertise enables us to develop reliable technical acoustic solutions adapted to the operating constraints of industrial environments.

Conclusion: sustainably controlling noise from HVAC systems

Noise generated by HVAC ventilation networks represents a major challenge for industrial and commercial operators. Effective noise reduction must reconcile acoustic performance, energy efficiency and technical integration into existing installations.

Thanks to its acoustic ventilation silencers and its expertise in industrial acoustic solutions, Groupe BOËT offers high-performance noise control systems, designed to reduce noise pollution without increasing pressure losses.

Would you like to improve the acoustic performance of your ventilation systems?
Contact Groupe BOËT to carry out an acoustic study and identify the most appropriate solution.