AIVC - Air Infiltration and Ventilation Centre

Search form


You are here

Home  |  thermal coupling

Influence of Air Leakage in Building’s Walls on Heat Transmission Loss through its Envelope

Barhoun H., Guarracino G., 2006
effective heat loss | thermal coupling | air exchange | air leakage
Bibliographic info: 27th AIVC and 4th Epic Conference "Technologies & sustainable policies for a radical decrease of the energy consumption in buildings", Lyon, France, 20-22 November 2006
Languages: English

The energy consumption of a building is evaluated by neglecting the heat loss which can occur when the air passes through the envelope. However, recent studies showed that air leakage plays asignificant role by affecting the thermal performances of walls and the energy consumption. Moststudies have focused on the quantification of air leakage flows through the building shell, withoutaddressing the problem of the heat exchange between this airflow and the construction materials asthe air passes through the envelope. The standard way of calculating a building load considersconduction (or assimilated) losses independently of airflow energy losses.In this paper we present results from a parametric study conducted on two buildings: a single familydwelling and a school building In order to have a global view on air leakage impact on the overallheating load of a building. According to our calculations a significant part of energy load can beattributed to air leakage: till 8% for the single family dwelling and 12% for the school building.

Related publications

This report summarizes the work of the initial working phase of IEA ECB Annex 62 Ventil
Maria Kolokotroni, Per Heiselberg, Lorenzo Pagliano, Jie Han, Regina Bokel, Peter Holzer, Annamaria Belleri, Denmark
This summary report presents insights on recommendations into how ventilative cooling i
Christoffer Plesner, Flourentzos Flourentzou, Guoqiang Zhang, Hilde Breesch, Per Heiselberg, Michal Pomianowski, Peter Holzer, Maria Kolokotroni, Annamaria Belleri, Denmark
Overheating in buildings is an emerging challenge at the design stage and during operat
Peter Holzer, Theofanis Psomas, Denmark