The Sound Attenuator – Secondary
Source of Contamination
in Air-Conditioning Systems?
Warsaw
University of Technology, Institute of Heating and Ventilation,
Nowowiejska 20, 00-653 Warsaw, Poland
Order Paper
£3.50 (offer only available from this site)
Abstract
The problem of the hygienic state of
air-conditioning installations in many countries is still treated with
limited attention and, in general, this issue is disregarded both when
systems are designed and when the maintenance of already operating system
is performed. In order to highlight problems resulting from contamination
of the installation, microbiological assessment of air conditioning
systems in a hospital was carried out. The measurements particularly
pointed to increased microbiological contamination of air and dust
deposited in the system just downstream of the sound attenuators. This
effect was observed even in the case of a relatively new installation.
Thus the results confirmed that special attention should be paid to
assuring the microbiological cleanliness of sound attenuators. Regular
replacement of sound attenuator material should be considered due to the
danger of micro-organisms deposition and growth, leading to contamination
of air supplied to rooms which, in consequence, can be hazardous to
people’s health.
Key words: Air-conditioning system, sound attenuator,
contamination, micro-organisms, hospital
|
