Thermal insulation principle of insulating glass

      Hollow glass is composed of two or more layers of flat glass, sealed with a high airtight adhesive around it, and filled with dry gas in the middle. Dry, non convective gases can block the path of heat transfer, thereby limiting the temperature difference and heat transfer of glass, effectively reducing the heat transfer coefficient of glass. The interior is generally filled with inert gas to further reduce the heat transfer coefficient.

      The biggest improvement of insulating glass is its thermal conductivity, not its thermal insulation performance. In the summer of the southern region, the heat entering the room through glass is mainly radiant heat, while the heat due to the indoor and outdoor temperature difference only accounts for a small portion. Especially in summer evenings, the excellent thermal insulation performance of insulating glass makes it difficult to dissipate indoor heat, which is detrimental to energy conservation.
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