Laboratory dust loading test method of exhaust air terminal devices

Résumé et principaux résultats

Communication à la 21ème Conférence de l'AIVC, 26-29 September 2000, La Haye
Abstract : Loading of ventilation components with dust may affect air handling systems performances and contribute to poor indoor air quality. A lot of standardised test method for ventilation components characterisation - filters, fans, heat exchangers, extract air terminal devices etc. - exist but all these methods describe initial performance determination except for filters which are also characterised by dust loading test. The aim of our study was to define a laboratory dust loading test method of extract air terminal devices and to validate results comparing to on-site results. As extract air terminal devices are commonly used in kitchens and bathrooms, dust loading may content solid particles and sticky particles. Dust loading test results show a good reproducibility. Air flow measurement of naturally loaded devices show that the visual appearance can be not representative of the loading level. Naturally loaded devices show a large diversity but the loading effect is of the same order as artificial loading. Bathroom loadings, generally less sticky, can be represented in average by an artificial test with ASHRAE dust (EN 779) only, while the adjunction of oil represents better kitchen loaded devices. Performances of the cleaned devices are similar to those of the new one except in case of very high loading characteristics.

Commissions

Ventilation des bâtiments résidentiels et tertiaires

Thème

Ventilation et qualité de l'air

Mots-clés

Bouches d'extraction, Encrassement, Ventilation

Auteurs

BERNARD Anne-Marie, GINESTET Alain