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The Application of Silica-Based Aerogel Board on the Fire Resistance and Thermal Insulation Performance Enhancement of Existing External Wall System Retrofit

Author

Listed:
  • Kuang-Sheng Liu

    (Department of Interior Design, TungFang Design University, Kaohsiung City 829003, Taiwan)

  • Xiao-Feng Zheng

    (School of Built Environment, Engineering and Computing, Leeds Beckett University, Leeds LS1 3HE, UK)

  • Chia-Hsing Hsieh

    (Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 310401, Taiwan)

  • Shin-Ku Lee

    (Research Center for Energy Technology and Strategy, National Cheng-Kung University, Tainan 701401, Taiwan)

Abstract

Due to the need of good thermal performance, external wall insulation (EWI) is usually made of materials that are not fire resistant and sometimes flammable. That restricts its application to a particular circumstance such as limited building height. Hence, a material with good thermal insulation and fire resistance performance would allow EWI to be more widely applied. This paper introduces a novel material: a silica-based aerogel porous board, which differs itself from mainstream products available in the market because of its outstanding properties, such as low density, high surface area, low thermal conductivity and superhydrophobicity. Herein, its thermal insulation and fire-resistant performance were tested and compared with commercial products. The cone calorimeter analysis results indicated that the aerogel porous board could improve the fire resistance performance. Moreover, the evaluation of thermal insulation performance suggested that the application of an aerogel porous board on the external stone wall of existing buildings can decrease the U-value by 60%. Through the detailed insight into the case-study, it is quite clear that the carbon impact of building stock could be greatly reduced by means of a coherent set of building envelope retrofitting actions based on this innovative heat insulation material, without compromising the fire safety.

Suggested Citation

  • Kuang-Sheng Liu & Xiao-Feng Zheng & Chia-Hsing Hsieh & Shin-Ku Lee, 2021. "The Application of Silica-Based Aerogel Board on the Fire Resistance and Thermal Insulation Performance Enhancement of Existing External Wall System Retrofit," Energies, MDPI, vol. 14(15), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4518-:d:601921
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    References listed on IDEAS

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    1. Friess, Wilhelm A. & Rakhshan, Kambiz, 2017. "A review of passive envelope measures for improved building energy efficiency in the UAE," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 485-496.
    2. Webb, Amanda L., 2017. "Energy retrofits in historic and traditional buildings: A review of problems and methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 748-759.
    3. Aurora Greta Ruggeri & Laura Gabrielli & Massimiliano Scarpa, 2020. "Energy Retrofit in European Building Portfolios: A Review of Five Key Aspects," Sustainability, MDPI, vol. 12(18), pages 1-38, September.
    4. Santu Golder & Ramadas Narayanan & Md. Rashed Hossain & Mohammad Rofiqul Islam, 2021. "Experimental and CFD Investigation on the Application for Aerogel Insulation in Buildings," Energies, MDPI, vol. 14(11), pages 1-16, June.
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    Cited by:

    1. Zhijia Huang & Yadong Sun & Lin Gan & Guo Liu & Yang Zhang & Tao Zhou, 2022. "Durability Analysis of Building Exterior Thermal Insulation System in Hot Summer and Cold Winter Area Based on ANSYS," Sustainability, MDPI, vol. 14(9), pages 1-11, May.

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