Variation in the airtightness of windows as a function of the outside temperature: measurement apparatus and examples of application. Variation de la permeabilite a l'air des fenetres en fonction de la temperature exterieure : dispositif de mesure et exem

Describes study and operating principles of device allowing a window (or more usually a light-weight cladding unit) to be placed in variable temperature conditions simulating actual summer and winter conditions, in order to determine the airtightness of the window under these conditions. Describes testing of three plastic window frames in the device and supplies the measured values of the airtightness before, during and after the tests, and the corresponding curves.