This paper discusses the practical evaluation of noise levels generated by air-conditioning and ventilating systems inside buildings. The results of this work are incorporated in a Draft Italian Standard. The criterion for evaluation is based on the difference between the total sound pressure level in the room when the noise source is working, and the background noise level. The allowable difference must decrease with the value of the background noise level. The measured sound pressure level is corrected according to the type of noise and to the acoustical characteristics of the room; impulsive noises should not be present in the system. At present this Draft Proposal, which has been developed by a Working Group of the Italian Standard Institution (UNI), is under discussion. © 1980, All rights reserved.
Evaluation of noise from air-conditioning systems—A draft proposal
POMPOLI, Roberto
1980
Abstract
This paper discusses the practical evaluation of noise levels generated by air-conditioning and ventilating systems inside buildings. The results of this work are incorporated in a Draft Italian Standard. The criterion for evaluation is based on the difference between the total sound pressure level in the room when the noise source is working, and the background noise level. The allowable difference must decrease with the value of the background noise level. The measured sound pressure level is corrected according to the type of noise and to the acoustical characteristics of the room; impulsive noises should not be present in the system. At present this Draft Proposal, which has been developed by a Working Group of the Italian Standard Institution (UNI), is under discussion. © 1980, All rights reserved.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
