Improving the efficiency of thermal insulation of window panes—the use of transparent thin-layer insulation coverings filled with nanostructures

Abstract The article discusses experimental studies on the thermal conductivity of a transparent thermal insulation layer (film) applied to a window pane. The research was conducted using a measurement cube known as the "Hot Box" method. The examined film was made based on a polymer matrix with metallic inclusions. The insulating layer of the film allows for the transmission and blocking of light—UV infrared radiation. In the studies, a 100 W bulb was used as the source of infrared radiation (light source), placed at the central point of the measurement cube "Hot Box". To estimate the heat transport conditions, temperature distributions on the internal and external surfaces of the examined window pane with the applied transparent coating (film) were measured. Based on the temperature distribution data, the thermal conductivity coefficient of the applied transparent coating on the pane was estimated.