Abstract
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 × 1.3 m2 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.
Highlights
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An industry production process of gasochromic windows based on Sol-Gel method has been reported.
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A large scale of gasochromic window with 0.8 × 1.3 m2 area was fabricated.
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According to the Chinese national standards and industry standards for window energy saving, the evaluation parameters of energy-saving effect of gasochromic windows are initially proposed.
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Acknowledgements
The authors acknowledge the support of the National Key Research and Development Program of China [grant No. 2017YFA0204600], the National Natural Science Foundation of China [grant No. 51872204], [grant No. 52072261], [grant No. 22011540379], Shanghai Social Development Science and Technology Project [grant No. 20dz1201800].
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Gao, G., Xue, S., Wang, H. et al. Medium-scale production of gasochromic windows by sol-gel. J Sol-Gel Sci Technol 106, 331–340 (2023). https://doi.org/10.1007/s10971-021-05721-9
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DOI: https://doi.org/10.1007/s10971-021-05721-9