Energy-saving windows are taken for granted. Whether we are building a new home or renovating an old home, most of us recognize the environmental and monetary benefits of energy efficient windows.
Interestingly, the history of energy-efficient windows is so short. In just over 30 years, the United States has experienced a revolution in thought and technology.
What is the sound of a light bulb?
In the mid-1970s, the United States faced an understanding of energy infinity or freedom. As world politics pushes oil prices to historical highs, natural gas pipelines and underwear wear become the norm.
When studying ways to reduce energy use, it is clear that windows are the main source of heat loss. The US Department of Energy estimates that 25% of home heating costs are diverted to offset the effects of window heat loss.
At the time, most home windows were single-pane windows with wooden frames. Homeowners in colder parts of the country sometimes reduce heat loss and install storm windows on traditional windows. The replacement window is usually made of an aluminum frame.
In the late 1970s, multi-pane windows were an early advancement of energy-efficient windows. Get tips from the storm window, which uses the space between two or more layers of glass as the insulation. As multi-pane windows develop, the space between the layers is filled with argon or other inert gases to improve their insulation properties.
New frame material
As the study of energy-efficient windows became more intense, manufacturers quickly discovered that the aluminum frame insulation was poor, resulting in a large amount of heat loss. In the 1980s, manufacturers began producing vinyl and wood-vinyl composite frames. These frames reduce heat transfer and again increase the efficiency of the window.
At the same time, manufacturers began to replace metal gaskets with separate windows. Metal gaskets are a source of heat loss and they are beginning to be replaced by foam or plastic gaskets. These non-metallic gaskets are better insulators that reduce heat loss and condensation.
In the late 1980s, low-emission [low-emission] glass began to be incorporated into energy-efficient windows. Low emissivity glass uses a thin metal oxide layer to form an infrared radiation barrier. Low-emissivity glass allows visible light to pass through the glass, but keeps heat from escaping.
The future of energy-efficient Windows
In the early 21st century, researchers began to develop new coatings that could change windows based on outdoor conditions. The absorbing electrochromic [AE] window will use a thin layer of material to change color at very small currents. The light sensor in the window will control the current. AE windows are transparent in low light conditions but darken in the sun.