The calculation of air infiltration rates caused by wind and stack action for tall buildings

By applying the pressure data obtained from a wind tunnel model study to a computer model building, a simple procedure for calculating exterior wall pressure differences and air infiltration rates for various wind velocities and direction was developed. This study has indicated that the overall infiltration rate is governed by the larger of the two motive forces and that the exterior wall pressure differences at any level caused by wind and stack action are additive.L'application \ue0 un mod\ue8le math\ue9matique des donn\ue9es sur la pression obtenues au cours de l'\ue9tude d'une maquette a\ue9rodynamique a permis de mettre au point une m\ue9thode tr\ue8s simple pour calculer les diff\ue9rences de pression exerc\ue9es sur les murs ext\ue9rieurs et les diff\ue9rents taux d'infiltration de l'air, compte tenu de la direction et de la vitesse du vent. La pr\ue9sente \ue9tude a indiqu\ue9 que le taux maximal d'infiltration est fonction de la plus grande des deux forces motrices et que les diff\ue9rences de pression exerc\ue9es sur les murs ext\ue9rieurs \ue0 n'importe quel niveau et dues aux effets du vent et aux effets de tirage sont cumulatives.Presented at the 1977 ASHRAE Annual Meeting, Halifax, NS, Canada, June 26-30, 1977Peer reviewed: YesNRC publication: Ye