Assessment of Pollutant Spread from a Building Basement with three Ventilation Systems

Juslin Koffi (1)

1 LEPTIAB - Laboratoire d'Étude des Phénomènes de Transfert et de l'Instantanéité : Agro-industrie et Bâtiment

Ventilation aims at providing a sufficient air renewal for ensuring a good indoor air quality (IAQ), yet building energy policies are leading to adapting various ventilation strategies minimising energy losses through air renewal. A recent IAQ evaluation campaign in French dwellings shows important pollution of living spaces by VOCs such as formaldehyde, acetaldehyde or hexanal, particularly in buildings equipped with a garage. Besides, radon emission from soil is a subject of concern in many countries. Several studies are done to understand its release mode and deal with the spread of this carcinogen gas. This paper aims to experimentally assess a contaminant spread from a house basement using mechanical exhaust and balanced ventilation systems, and natural ventilation.

Mots clés: radon; ventilation systems; building depressurization; tracer gas; radon.

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]; Dynamique des Fluides [physics.flu-dyn]

Juslin Koffi. Assessment of Pollutant Spread from a Building Basement with three Ventilation Systems. EuroAcademy on Ventilation and Indoor Climate - CLIMACADEMY Course 7: Experimental Assessment of Indoor Environment Parameters, Oct 2009, Pamporovo, Bulgaria. pp.229. ⟨hal-00462196⟩