Gas phase air filters in HVAC systems for better indoor air quality

Résumé et principaux résultats

This paper was presented to Healthy Buildings Conference (Lisbon - June 2006).
Activated carbon filters have been installed within the air handling unit of an HVAC system feeding 100 % fresh air to an office building. The filters efficiency against ozone (O3) and nitrogen oxides (NO2 and NO) as function of time and outdoor air parameters (temperature, relative humidity) has been measured continuously over a one year period. The results show that the filters efficiency is high (generally between 70 and 90 %) and varies along time with temperature and relative humidity of air. It has also been shown that the use of this kind of filters improves the indoor air quality as the indoor gas concentrations (O3 and NO2) inside the building are lower after the filters have been installed. This paper reports on the first six months of the study (May to November 2005).

Commissions

Filtration de l'air, Ventilation industrielle et assainissement des atmosphères de travail

Thème

Ventilation et qualité de l'air

Mots-clés

Centrales de traitement d'air, Filtration, Filtres de ventilation générale, Qualité de l'air intérieur

Auteurs

GINESTET Alain, PUGNET Dominique