Medium-scale production of gasochromic windows by sol-gel

For energy saving demands, kinds of smart windows have been applied widely, such as electrochromic windows, thermochromic windows, and gasochromic windows. In this paper, the medium-scale production process of tungsten oxide gasochromic windows was systematically studied based on Sol-Gel technology. The whole medium-scale production process can be divided into the preparation of WO3 sol, coating and post treatment of WO3 films, and assemblage of gasochromic windows. The reaction condition, material ratio and the assemblage of the gasochromic windows were investigated and a large scale gasochromic window with 0.8 x 1.3 m(2) area was prepared. And a systematic energy-saving evaluation method was proposed for the large-area gasochromic windows which considered the influence of solar radiation in different seasons on indoor cooling or heat energy consumption. The relevant parameters of summer and winter were used to calculate the comprehensive energy-saving evaluation parameters (EEP) of the windows. This evaluation parameter can be used to evaluate the annual energy-saving performance of the gasochromic windows. [GRAPHICS] .

Automated summary

In this study, the medium-scale production process of tungsten oxide gasochromic windows was systematically studied, and a large-scale gasochromic window was successfully prepared. Furthermore, an energy-saving evaluation method for gasochromic windows was proposed, which can be used to assess the annual energy-saving performance of the windows.