| 摘要 |
<p>In a window element for a building facade, with a frame and two or more panes (1, 2, 3) lying behind one another, the inner pane (3) is heated and the frame is formed by thermally separated profiles, as a result of which the K value of the window surface is considerably improved. The heating is carried out by means of heating elements (30) situated in the intermediate space (28) between the panes and by means of heating elements arranged on or cast in the inner pane. In preferred embodiments, conventional base-load heating systems are superfluous because the heating of the building takes place exclusively via the window surfaces. The heating elements can be supplied via solar cells (31) arranged on the shell of the building.</p> |
