Low-E glass

Interior · Windows, Skylights and Solariums · printed page 362 (PDF page 363)

Book index entries

Glass – Low-E Low-E Glass Skylight – Window and Solarium from the Inside and Window and Skylight from the Inside Skylight and Solarium from the Inside

Text in the illustration

krypton, carbon dioxide or refrigerant
the low-E coating may be applied to the inside of the double glazing or it may be a film suspended between the two panes of glass
heat from the sun is reflected back
heat from inside is reflected back into the house
glass
gases with lower thermal conductance than air (argon, krypton, carbon dioxide or refrigerant can be placed between the panes to improve energy efficiency
cross section

Generated explanation

The illustration shows a cross section through a double-glazed window set in a framed wall, with an enlarged detail of the glazing. The detail identifies two glass panes and indicates that a low-E coating may be applied inside the double glazing or provided as a film suspended between the panes. Wavy arrows show solar heat reflected outward and heat from inside reflected back into the house. An annotation explains that gases with lower thermal conductance than air can be placed between the panes to improve energy efficiency.

Components

double-glazed window glass panes low-E coating suspended low-E film interpane gas space window frame window sill wall framing

Materials

glass wood low-emissivity coating low-E film argon gas krypton gas carbon dioxide gas refrigerant gas

Related illustrations

2042

Energy efficiency

· p. 362

Four cutaway window corners compare the thermal resistance of different glazing configurations. Single glazing is labeled R-1, double glazing R-2, and triple glazing R-3. A fourth assembly, labeled triple-glazed and low-