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2. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   If the IG unit had a gas fill (e.g. argon or krypton or a mixture) the gas is naturally dissipated and the R-value suffers. Since 2004, there are also some companies offering the same restoration process for failed double-glazed units [25] in the UK, and there is one company offering restoration of failed IG units in Ireland since 2010.

3. Window insulation - Wikipedia

   en.wikipedia.org/wiki/Window_insulation

   Clear double glazing has a U-factor between 1.8 and 3 W/(m 2 ⋅K) or between 0.3 and 0.5 Btu/(h⋅ft 2 ⋅°F) (about R-2) Clear triple glazing has a U-factor between 0.5 and 1 W/(m 2 ⋅K) or between 0.1 and 0.2 Btu/(h⋅ft 2 ⋅°F) (about R-3). Double and triple glazing are critical for energy efficiency. Single glass windows are no longer ...

4. Trombe wall - Wikipedia

   en.wikipedia.org/wiki/Trombe_wall

   The developer of this water wall, Steve Baer, names this system “Drum Wall”. [14] He painted the steel containers similar to oil drums and filled them almost full of water, leaving some room for the thermal expansion. Then stacked the containers horizontally behind an equator-facing double glazing with the blackened bottoms facing outside.

5. Quadruple glazing - Wikipedia

   en.wikipedia.org/wiki/Quadruple_glazing

   Quadruple glazing is a subset of multipane (multilayer) glazing systems. Multipane glazing with up to six panes is commercially available. [1] Multipane glazing improves thermal comfort (by reducing downdraft convection currents adjacent to the windowpane), and it can reduce greenhouse gas emissions by minimising heating and cooling demand.

6. Passive house - Wikipedia

   en.wikipedia.org/wiki/Passive_house

   The windows normally combine triple or quadruple-pane insulated glazing (with an appropriate solar heat-gain coefficient, [2] [60] low-emissivity coatings, sealed argon or krypton gas filled inter-pane voids, and 'warm edge' insulating glass spacers) with air-seals and specially developed thermal break window frames.

7. Glazing (window) - Wikipedia

   en.wikipedia.org/wiki/Glazing_(window)

   The ideal gap size varies by location, but on average it ranges from 15-18 mm thick, giving a final assembly size of 23-26 mm assuming a typical glazing thickness of 4 mm. [9] A double-paned window with air in the gap has an R-value of 2.1, which is much better than the 0.9 that a single pane of glass yields. A triple-paned window, which is not ...