![]() These gases are more viscous, slow moving and less conductive, reducing convective currents in the air space, lowering the heat transfer between inside and outside. Triple-pane, low-e window units are also available and have a U-value of approximately 0.25.Īnother type of window that's available is one that is gas filled, usually with Argon or Krypton. This type of glass is called low-emissivity, or low-e, glass.Ī double-pane window with a low-e coating has a U-value of about 0.36, which translates to 35 percent less heat gain or loss than conventional double-pane windows. One common method of reducing heat gain or loss through windows is by coating the glass with an invisible, heat-reflective material. The overall U-value of a window includes the glass or glazing, the frame and the sash. The U-value of window units is the heat flow at the center of the glass, and this is generally lower than overall U-value of the window. This air space reduces conductive heat loss through the window.īy adding yet another pane of glass (triple glazing), the U-value decreases to about 0.31. The technique of double-glazing creates an air space between the panes of glass. Adding another pane of glass (referred to as double-glazing) will lower the U-value to about 0.5. ![]() ![]() Most single-pane windows in a home probably have a U-value of about one. A window with a low U-value is better than a window with a high U-value. U-value is a measure of a material's ability to transfer heat. What are some common window types and their characteristics?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |