About Sound Insulation of Air Ducts of Ventilation Systems Built-In Commercial and Other Premises

Constructive solutions are given for damping the air duct – an obstacle to free vibrations of its walls. It is shown that in order to reduce the intensity of sound radiation into the surrounding space and transmit structural sound through brackets and hangers, the material of the gasket used practically does not affect the result. The determining factors are the tightening force and bending stiffness. The main function of the gasket is to evenly distribute the load on the duct walls. Adjusting the degree of tension it is possible to change the frequencies of the sound insulation values, if required. It is noted that the installation of such structures can be carried out on already installed and operated air-ducts without stopping the fan operation. A similar principle of noise damping is recommended for sewer risers in residential and public buildings. The article is intended for managers of construction and operating organizations. The data given can be used in the design.

Yu.A. LABUNSKY, Candidate of Sciences (Engineering),
E.F. FILATOV, Candidate of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.)

OOO “INT-Solushn” (18, of. 104, Peresveta Street, Bryansk, 241019, Russian Federation)

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