The new generation energy glass (Low-E) is a transparent glass, which has a coating of tiny metal oxides on one side. This coating does not allow the transfer of heat from the interior of the house to the outside environment or vice versa.
Low-emissivity (Low-e) energy glazing, with a special coating on one side of their surface, acts as mirrors in the infrared and ultraviolet part of the electromagnetic radiation. This results in a reduction in the thermal radiation that passes through the glass. Thus the thermal radiation of the sun does not easily pass through a low-e glass, but conversely the thermal radiation of the interior can not easily escape to the outside.
Energy glazing is never used alone, ie as single glazing but always in multi-level constructions, such as double glazing. The use of windows is mainly done in homes and offices, where the cost of cooling and heating plays an important role and the use of this type of glass can lead to a significant reduction in the cost of cooling and heating.
The overall benefits of energy glazing can be summarized as follows:
• More efficient thermal insulation in winter.
• Easier cooling in summer.
• Reduction of the annual heating and cooling costs up to 35%.
• Substantial contribution to the protection of the environment.
• Reduction of up to 70% of the incoming ultraviolet radiation that wears carpets, curtains, furniture etc.
• Minimum various costs from double glazing.
• Similar look to double glazing.