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That window can send more solar heat in winter season than in summer season. A west-facing window on a summer season's afternoon has an angle of incidence from near 0 approximately 30 with a big effective location of solar radiation. A north-facing window, in summertime, has a high angle of occurrence and a low reliable location of solar radiation, so can transfer 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 choose from.

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

The energy efficiency of IGUs likewise depends on: the homes 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. Larger cavities provide lower (much better) U worths, with 12mm typically accepted as the preferred space how well the cavity is sealed.

If argon is installed to the cavity in location of air, moisture is reliably left out the level of desiccant (drying representative). The spacer (metal or polymer strip) that separates the glass layers includes a desiccant to soak up any wetness. Inadequate desiccant might cause wetness to condense on the glass surface in cold conditions, minimizing thermal performance.

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In truth, IGUs can deliver much better energy performance for all climates, especially in heated and air-conditioned houses. Cross-section information of single, double and triple-glazing systems Low emissivity glass (commonly called low-e glass) minimizes heat transfer. Low-e glass might be either high or low transmission: High transmission low-e glass has a covering that allows daytime from the sun to enter the house to attain great 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 finishing or a vacuum-deposited thin movie metal finishing. Pyrolytic finishes are durable and can be used for any glazing; vacuum-deposited finishes are soft and are only utilized within IGUs. Low-e finishes can substantially enhance both U value and SHGC; nevertheless, they should be used properly or they will either degrade or fail to perform as required.

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Low-e coatings can be utilized in mix with clear, toned or reflective glass. Low-e coatings on glazing can minimize heat transfer where required Photo: Department of Industry, Science, Energy and Resources Toned glass has colouring additives consisted of during manufacture. It is available in numerous colours, generally bronze, grey, blue and green.