we have seen many buildings made out of Glass on the outside their special reflecting glass which reflect light and keep the building cool find out the names and composition of these glasses and write how they are helpful in saving energy as well as cooling the building
Answers
Many buildings are made out of glass on the outside. Their special reflecting glass properties which reflects light and keep the building cool.
Here are a few names and compositions of these glasses and how they are helpful in saving energy as well as cooling the building:
1. Toned glass: This type of glass acts like ‘sunglasses’ against the glare and also reduces the heat entering a home.
They are made by small additions of metal oxide to rolled or float glass composition.
2. Low E glass: This glass has a transparent and low emissivity coating that reflects out heat.
It has a composition including SiO2, AI2O3 (aluminum oxide or alumina), CaO (calcium oxide or lime) and MgO (magnesium oxide or magnesia),
3. Insulated glazing units:These are commonly known as ‘double-glazing’, where two pieces of glass are used with a gap in the middle, which can be filled with air or gas to provide the ultimate glazing solution.
It is used with low E glass for greater insulation and toned glass for windows that face the summer sun.