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

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You can quickly and easily enhance the thermal efficiency of your home by replacing 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 very efficient 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 performance of IGUs also depends on: the homes of each layer of glass. Different 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. Broader cavities supply lower (better) U worths, with 12mm usually accepted as the favored gap how well the cavity is sealed.

If argon is set up to the cavity in location of air, wetness is reliably excluded the level of desiccant (drying representative). The spacer (metal or polymer strip) that separates the glass layers contains a desiccant to take in any wetness. Inadequate desiccant may cause wetness to condense on the glass surface in cold conditions, lowering thermal performance.

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In truth, IGUs can provide much better energy performance for all climates, especially in heated and air-conditioned homes. Cross-section information of single, double and triple-glazing systems Low emissivity glass (commonly referred to as low-e glass) lowers heat transfer. Low-e glass might be either high or low transmission: High transmission low-e glass has a covering that allows daylight from the sun to pass into the house to achieve great solar heat gain, but decreases 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 coating. Pyrolytic coatings are resilient and can be utilized for any glazing; vacuum-deposited coverings are soft and are just used within IGUs. Low-e finishes can considerably improve both U worth and SHGC; however, they should be utilized correctly or they will either deteriorate or stop working to perform as needed.

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Low-e finishings can be used in combination with clear, toned or reflective glass. Low-e coatings on glazing can reduce heat transfer where needed Photo: Department of Industry, Science, Energy and Resources Toned glass has actually colouring additives consisted of throughout manufacture. It is offered in numerous colours, usually bronze, grey, blue and green.