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That window can transfer more solar heat in winter season than in summertime. A west-facing window on a summertime's afternoon has an angle of occurrence from near 0 approximately 30 with a large efficient location of solar radiation. A north-facing window, in summer season, has a high angle of occurrence and a low reliable area of solar radiation, so can transmit less heat than a west-facing one.

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You can rapidly and quickly enhance the thermal performance of your home by changing your windows. There are thousands of types of glass and frames to select from.

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Single glazing with clear glass is not really efficient when it comes to heat loss or gain. To enhance efficiency, you can utilize single glazing with a more energy-efficient type of glass such as low emissivity (low-e) glass.

The energy efficiency of IGUs also depends on: the residential or commercial properties of each layer of glass. Various glass types (for example, clear and low-e glass) can be put together in an IGU.

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IGU cavities can be filled with air or a more inert, low-conductivity gas such as argon the width of the cavity. Wider cavities supply lower (much better) U values, with 12mm usually accepted as the favored space how well the cavity is sealed.

If argon is installed to the cavity in place of air, moisture is reliably left out the level of desiccant (drying agent). The spacer (metal or polymer strip) that separates the glass layers consists of a desiccant to take in any wetness. Inadequate desiccant might trigger wetness to condense on the glass surface area in cold conditions, minimizing thermal performance.

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IGUs can deliver much better energy performance for all climates, especially in heated and air-conditioned homes. Cross-section information of single, double and triple-glazing units Low emissivity glass (commonly called low-e glass) lowers heat transfer. Low-e glass may be either high or low transmission: High transmission low-e glass has a finishing that permits daytime from the sun to pass into your home to accomplish good solar heat gain, but reduces the amount of the long wavelength infrared heat that can get away back through the window.

Low-e glass has either a pyrolytic covering or a vacuum-deposited thin movie metal finishing. Pyrolytic coverings are durable and can be utilized for any glazing; vacuum-deposited finishings are soft and are just utilized within IGUs. Low-e coatings can significantly improve both U value and SHGC; nevertheless, they need to be utilized properly or they will either weaken or fail to perform as needed.

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Low-e finishings can be used in mix with clear, toned or reflective glass. Low-e coverings on glazing can lower heat transfer where required Photo: Department of Industry, Science, Energy and Resources Toned glass has actually colouring ingredients included during manufacture. It is available in various colours, usually bronze, grey, blue and green.