Acoustic enclosures for back-up power and CHP
Hospitals, data centres, pharma production and logistics sites need back-up generators or combined heat & power. During test runs and effective use, these installations produce up to 100 dB of exhaust noise with tones that carry far. Noise Solutions designs enclosures that reduce this without blocking the installation.
Why generator noise is tough
A diesel generator combines engine noise, exhaust pulses and cooling fan noise. Each source has a different frequency profile. Above all, exhaust pulses generate low-frequency tones that pass through walls and ground. Test and emergency runs often happen at night or early morning, when neighbours complain fastest.
Our approach
We build a closed acoustic enclosure around the generator or CHP unit, with absorbing rock wool inside and heavy Noise-Reducer panels outside. The exhaust is fitted with an absorbing silencer. Internal ventilation openings receive acoustic baffles so cooling stays guaranteed.
Legal framework
Back-up installations fall under VLAREM II. Property-line limits apply day and night. We dimension the enclosure so that test runs at night stay within the limit, which is essential for hospitals and data centres running monthly tests.
Result
Reduction of 20 to 30 dB, while preserving cooling and maintenance access. Measurement report on delivery to support the permit or complaint handling.
Recommended materials
Rock wool enclosure
Absorbs engine and fan noise.
Noise-Reducer panels
Isolates low-frequency exhaust pulses.
Absorbing exhaust silencer
Reduces the exhaust tones that carry furthest.
Ready for peace?
Request your free consultation today. Our experts will analyse your situation and recommend the best solution, completely free of any obligation.