Acoustic Investigations of Insulation Coating on Piping Air and Gas Systems

Air and gas piping Systems (ducts and HVAC systems, technological pipes gas systems, etc.) are often sources of noise, negatively affecting the person in his field of work, living and recreation. Virtually the only way to protect from it is to improve the sound insulation of pipelines through walls coverings. The article is devoted to experimental investigations of such coatings, related to their acoustic possibilities (effects). Considered depending on the types of physical and technical parameters of the materials used, the thickness and the sequence layers, as well as to the shape of the cross-section, diameter and wall thickness of the pipes. It is found that the sound insulation of the flat design is substantially lower than the curved, in the range of low frequencies, are comparable to the average and slightly higher than at high frequencies. This excludes the use of the theory of sound insulation of flat designs for sound insulation properties of walls research pipelines with multilayer coatings.

V.P. GUSEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.V. SIDORINA, Engineer

Scientific-Research Institute of Building Physics of the Russian Academy architecture and construction sciences (21, Lokomotivniy Driveway, Moscow,127238, Russian)

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