Evaluating the airtightness of the building envelope using infrared thermographic measurements

Purpose of the work

Is it possible to estimate an air infiltration flow rate, based on infrared images?

Method of approach

Laboratory tests and numerical simulations

Content of the presentation

This paper discusses laboratory measurements on a small test house. IRT measurements and (de)pressurization tests were performed on different types of junctions, e.g. at the window-wall interface. The results were analysed by calculating the temperature factor, to compare IRT images from different joints.