|Document ID (ISN)||26828|
|ISSN - Serial title
||Revue de l'industrie minérale - Supplément Mine
|Convention or series no.
||Soundproofing of electrical auxiliary fans
||Insonorisation des ventilateurs électriques d'aérage secondaire [in French]|
||July 1976, No.4, p.170-180. Illus.
||General remarks on auxiliary fans as a source of noise and the known control measures are followed by the results of research by the French Coalmining Research Centre (CERCHAR) to develop a standard outlet silencer suited to the great variety of fans used in French coalmines. Test bench and field studies of 3 available models selected in the first instance, and modification of 2 of these, permitted a reduction of 25-35dB(A). Solutions were also found for soundproofing the casing. To forestall loss of attenuation as a result of dust, renovation of the outlet silencers must be planned.
||fans; mine ventilation; silencers; noise control
||sound absorption; airflow noise
||Noise, hearing and vibration
|Broad subject area(s)
Compressed gases and pressure vessels