WO3 Film Applied for Large Area Smart Glass

Tungsten trioxide, more precisely, WO3 film is often used to develop and produce a large area smart glass – an energy-efficient glass that is widely applied in building energy efficiency. As China's building energy efficiency is still at a very backward level, China's average building energy consumption is more than three times that of developed countries, and it consumes 500 million tons of standard coal per year.

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At present, only less than 1% of the total buildings in China use high-performance energy-saving glass windows and doors, so the average U value of doors and windows is as low as 3.5W/(m2•K). At present, U value of doors and windows in Beijing that has the highest standard on energy-saving glass doors and windows is 2.8W/(m2•K), which only meets the U value standard of doors and windows in European in 1984. In this regard, China began to implement the new building energy conservation law. With the implementation of the new building energy conservation law, more high-performance energy-saving glasses will be used in Chinese buildings. The smart glass technology, which can dynamically control the heat transfer coefficient and solar thermal radiation, represents the most advanced technology in the world today and will have a very broad market prospect worldwide.

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