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Optimal control of window coverings can increase occupant comfort (visual and thermal comfort) while saving building energy use (lighting, cooling, and heating energy). [7] Typical dynamic window coverings include automated blinds and automatic shades. Window blinds and shades can be controlled to avoid glare while introducing daylight to the ...
Some smart windows can self-adapt to heat or cool for energy conservation in buildings. [5] [6] [7] Smart windows can eliminate the need for blinds, shades or window treatments. [8] Some effects can be obtained by laminating smart film or switchable film onto flat surfaces using glass, acrylic or polycarbonate laminates. [9]
A typical installation of insulated glass windows with uPVC frames. Possibly the earliest use of double glazing was in Siberia, where it was observed by Henry Seebohm in 1877 as an established necessity in the Yeniseysk area where the bitterly cold winter temperatures regularly fall below -50 °C, indicating how the concept may have started: [2]
It becomes less significant in situations where direct sunlight is not a major factor (e.g., windows completely shaded by overhangs). Window design methods have moved away from Shading Coefficient to Solar Heat Gain Coefficient (SHGC), which is defined as the fraction of incident solar radiation that actually enters a building through the ...
Window insulation reduces heat transfer from one side of a window to the other. The U-value is used to refer to the amount of heat that can pass through a window, called thermal transmittance, with a lower score being better. [1] The U-factor of a window can often be found on the rating label of the window.
The shade in normally narrow streets will cool the air in the street and increase the pressure as opposed to the air in the sahn, which is open to the sun making it more likely that air would flow towards the sahn through the rooms of the house; the mashrabiya also provides protection and shade for the ground floor windows that are flat and ...
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