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A Clear, Strong, and Thermally Insulated Transparent Wood for Energy Efficient Windows
Author(s) -
Mi Ruiyu,
Li Tian,
Dalgo Daniel,
Chen Chaoji,
Kuang Yudi,
He Shuaiming,
Zhao Xinpeng,
Xie Weiqi,
Gan Wentao,
Zhu Junyong,
Srebric Jelena,
Yang Ronggui,
Hu Liangbing
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201907511
Subject(s) - materials science , transmittance , toughness , composite material , efficient energy use , thermal conductivity , compatibility (geochemistry) , clarity , work (physics) , thermal , haze , engineering physics , mechanical engineering , optoelectronics , meteorology , engineering , biochemistry , chemistry , physics , electrical engineering
The energy used for regulating building temperatures accounts for 14% of the primary energy consumed in the U.S. One‐quarter of this energy is leaked through inefficient glass windows in cold weather. The development of transparent composites could potentially provide affordable window materials with enhanced energy efficiency. Transparent wood as a promising material has presented desirable performances in thermal and light management. In this work, the performance of transparent wood is optimized toward an energy efficient window material that possesses the following attributes: 1) high optical transmittance (≈91%), comparable to that of glass; 2) high clarity with low haze (≈15%); 3) high toughness (3.03 MJ m −3 ) that is 3 orders of magnitude higher than standard glass (0.003 MJ m −3 ); 4) low thermal conductivity (0.19 W m −1 K −1 ) that is more than 5 times lower than that of glass. Additionally, the transparent wood is a sustainable material, with low carbon emissions and scaling capabilities due to its compatibility with industry‐adopted rotary cutting methods. The scalable, high clarity, transparent wood demonstrated in current work can potentially be employed as energy efficient and sustainable windows for significant environmental and economic benefits.