How Double Glazing Can Help Keep Your Home Cool In ... in Carine WA

Glazing merely means the windows in your house, including both openable and set windows, as well as doors with glass and skylights. Glazing in fact just means the glass part, but it is generally utilized to refer to all aspects of an assembly consisting of glass, movies, frames and home furnishings. Taking notice of all of these aspects will help you to accomplish effective passive design.

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Energy-efficient glazing makes your house more comfy and dramatically minimizes your energy costs. Unsuitable or badly designed glazing can be a major source of unwanted heat gain in summertime and considerable heat loss and condensation in winter. Up to 87% of a home's heating energy can be gotten and approximately 40% lost through windows.

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Glazing is a considerable investment in the quality of your house. A preliminary investment in energy-efficient windows, skylights and doors can significantly lower your yearly heating and cooling expense.

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This tool compares window selections to a base level aluminium window with 3mm clear glass. Understanding a few of the key properties of glass will assist you to choose the very best glazing for your home. Key residential or commercial properties of glass Source: Adapted from the Australian Window Association The quantity of light that travels through the glazing is called noticeable light transmittance (VLT) or noticeable transmittance (VT).

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The U value for windows (expressed as Uw), describes the conduction of the whole window (glass and frame together). The lower the U value, the higher a window's resistance to heat flow and the better its insulating worth.

If your house has 70m2 of glazing with aluminium frames and clear glass with a U value of 6. 2W/m2 C, on a winter's night when it is 15C cooler outside compared to indoors, the heat loss through the windows would be: 6. 2 15 70 = 6510W That is equivalent to the total heat output of a big room gas heating system or a 6.

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If you select a window with half the U worth (3. 1W/m2 C) (for instance, double glazing with an argon-filled space and less-conductive frames), you can cut in half the heat loss: 3. 1 15 70 = 3255W The solar heat gain coefficient (SHGC) for windows (revealed as SHGCw) determines how easily heat from direct sunlight flows through an entire window (glass and frame together).

The lower a window's SHGC, the less solar heat it sends to the home interior. The real SHGC for windows is affected by the angle that solar radiation strikes the glass.

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When the sun is perpendicular (at 90) to the glass, it has an angle of occurrence of 0 and the window will experience the maximum possible solar heat gain. The SHGC stated by glazing makers is always determined as having a 0 angle of occurrence. As the angle increases, more solar radiation is reflected, and less is transmitted.