Hometech Windows and Doors Inc Window Replacement - Shape Your Home’s Beauty and | Page 3

S MART W INDOW R EPLACEMENTS - C ONTROL THE S UN W ITH A S WITCH  How does Smart Glass Work  The window panes in a smart glass have the ability to dim and brighten. However, these moderations depend on the type of smart window installed. Some windows come with a switch, used to control the level of opacity. Though there are smart Windows that operate themselves without human control, they have been made to react to the rate of light penetration automatically. These window panes operate in the same way as sunglasses, which help to adjust the level of light penetration. This technology is referred to as photochromic technology. The application of Photochromic technology enables window to control light penetration automatically. There are other smart windows built with thermotropic panes, but do not respond to manual operation or level of light penetration. This type of window controls light penetration according to the level of heat detected by the glass. But the major disadvantage of the photochromic window type is that the light penetration to your home is already pre determined. It is however impossible to control the level of light penetration into your home. During winter months, thermotropic window can't work properly because low heat won’t allow it tint properly, while the photochromic window will act as radiant barrier thus preventing solar energy from heating the home through window replacement.