Noise reduction concept for exhaust device Niederauer Mühle:
Due to the exposed situation of the paper factory, nearby to the small city Kreuzau, high acoustic requirement of minus 40dB noise power level had to be fulfilled. The exhaust blowers all together share in the same chimney and on the top the acoustic properties should meet the requirements of “TA Lärm”.
After eight weeks work and erecting of:
- 12 pipe silencers
- 700 sqm capsule surface
- 11 doors R’w 52dB
- Several sound absorbing silencers
- Shock absorbers for the blowers
Contrast Akustik Ltd. fulfills all successfully.