Due to technological improvements achieved in the last 30 years, glass has
become an important building material. More and more building surfaces are
covered with glass. Accordingly, a correct selection of glass type is
crucial.
When selecting the type of glass used for buildings a number of different
characteristics should be evaluated. Here are some of the glass properties to
consider:
Solar control
Solar energy can be pleasant and
utilisable in many cases, but especially in buildings, it represents a major
source of overheating and unpleasant glare. Solar control glass, usually either
body-tinted (absorbing) or coated (reflecting), is used to reduce unwanted solar
radiant light and heat energy transmitted through glass. The Solar Heat Gain
Coefficient (SHGC) is the best measure to determine how well a product blocks
heat caused by sunlight. A similar, but much less precise measure of heat gain,
is the Shading Coefficient (SC)
Acoustic insulation....
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The sun is the most constant and powerful source of heat and light  in our
solar system. The sun radiates enormous amounts of energy, but only a tiny
portion of it reaches the earth. 42 percent of this energy is transformed into
light and 58 percent reaches the earth as heat in form of UV and IR rays.
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