English

Two studies have recently been performed to evaluate the current form of the Delta-Q test for duct leakage. In the first study 19 new homes in Wisconsin, USA were tested, and in the other 14 existing homes in Central Illinois, USA were measured. A primary goal was to determine whether the Delta-Q test was sufficiently reliable to use in production...

In this work the air leakage database of French single family dwellings, available at the CETE de Lyon (Centre d’Études Techniques de L’Équipement), has been analysed. This database accounts for 251 blower-door measurements of single family dwellings, made after 1983 as a result of several campaigns carried out across France to...

There are currently at least 6 national and European standards in Germany, which describe the assessment of infiltration- and exfiltration-volume flows subject to building air tightness. The results of window ventilation and balanced ventilation systems are identical for some standards; they partly distinguish themselves in height. The dependence...

With the background of different climates within Norway it was interesting to show the resulting differences in energy demand for the same typical office building. Further it was important to analyse the effectiveness of a climate adapted design that tightens the building envelope and increases the efficiency of the heat recovery system. The total...

There is increasing recognition of the importance of quantifying the airtightness of large commercial and residential buildings. Often these tests must be performed with multiple fans and technicians, usually within a narrow time window. Despite the best preparations, surprises and interruptions are unfortunately the norm. It is therefore...

Although there have been built about 20 sports halls with passive house standards by now, where the principles of residential houses and first experiences of built sports hall projects were used, but concerning the principles, there are still considerable gaps in the knowledge. In this article, questions concerning ventilation, heating and...

The combination of air tightness measurements and thermography introduces new application areas for both practices: the building thermography will be extended by a systematic leakage locating in the building envelope and during air tightness measurements, effects of air infiltrations through leaks can be shown. Scopes of...

As we increase energy requirements on ventilation, it is essential to assess the real performance of these systems on site, both for energy savings and IAQ aspects. Applied on two new buildings located in Paris and near Lyon (France), "Performance" project has given the opportunity to check the feasibility of applying quality approach...

Already in the year 1983, the general basis paper for noting air tightness, which was elaborated by the Swedish construction council for the AIVC, pointed to the particular risk of moisture stresses in consequence of water vapor carriage due to air flow through leakages in buildings. In Germany in 1989, a laboratory examination...

This paper investigates the practical feasibility of an exterior air barrier for the construction of a recently constructed light weight passive house in Ghent, Belgium. The paper discusses the results of pressurisation tests, conducted in the different construction stages of the building envelope. The windbreaker, which will also act as an...