Fraunhofer Institute for Building Physics IBP
Fraunhofer Institute for Building Physics IBP

Flanking sound transmission via ventilation ducts and shafts

Acoustics

Measurement Normalized flanking level difference (German “Schachtpegeldifferenz”)
Standard DIN 52210
Measurement object Ventilation ducts and shafts, exhaust systems, components of ventilation systems


Technical data

Duct length Approx. 690 cm
Distance of the shaft branches Approx. 275 cm
Branch length Approx. 50 cm
Size of mounting place Variable cross-section of ducts and shafts


Special feature

Max. sound reduction (related to the size of test sample) Dw ≥ 55 dB

 

More information

  • Circumferential bracket to support the separating floor
  • Variable installation of duct and shaft systems
ventilation duct with floor branches
© Fraunhofer IBP
Exemplary representation of the ventilation duct with floor branches.
Shaft opening in the receiving room without exhaust air element
© Fraunhofer IBP
Exemplary presentation of the shaft opening in the receiving room without exhaust air element.
 

© Shutterstock/everything possible

More Information