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Investigation on the optical and energy performances of different kinds of monolithic aerogel glazing systems

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  • Liu, Yang
  • Lu, Lin
  • Chen, Youming
  • Lu, Bin

Abstract

Aerogel glazing system is an advanced energy-efficient glazing system designed to reduce the building energy consumption. However, there is no study focused on the energy performances of aerogel glazing systems filled with different aerogels. To analyse the energy performance, the solar extinction coefficient is an indispensable parameter, which is unknown yet. In this research, the solar extinction coefficient is calculated by Mie scattering and Monte Carlo method. The spectral distribution of solar irradiance is taken into account. The influences of porosity and nano-particle’s size are discussed. Then, the solar heat gain coefficients of different aerogel glazing systems versus incidence angle are calculated. Finally, a dynamic heat transfer model is used to simulate the energy performances of different aerogel glazing systems. A case study is carried out for Hong Kong. The results indicated that the porosity of monolithic aerogel has greater influence than the diameter, and the reciprocal effect between the porosity and the diameter is negligible. It is also figured that aerogel with small nano-particle and low porosity will lead to a better energy conservation performance in cooling dominated region.

Suggested Citation

  • Liu, Yang & Lu, Lin & Chen, Youming & Lu, Bin, 2020. "Investigation on the optical and energy performances of different kinds of monolithic aerogel glazing systems," Applied Energy, Elsevier, vol. 261(C).
    • Handle: RePEc:eee:appene:v:261:y:2020:i:c:s0306261919321750
    DOI: 10.1016/j.apenergy.2019.114487
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    References listed on IDEAS

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    4. Berardi, Umberto, 2015. "The development of a monolithic aerogel glazed window for an energy retrofitting project," Applied Energy, Elsevier, vol. 154(C), pages 603-615.
    5. Ihara, Takeshi & Gao, Tao & Grynning, Steinar & Jelle, Bjørn Petter & Gustavsen, Arild, 2015. "Aerogel granulate glazing facades and their application potential from an energy saving perspective," Applied Energy, Elsevier, vol. 142(C), pages 179-191.
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    Cited by:

    1. Liu, Yang & Chen, Youming & Lu, Lin & Peng, Jinqing & Zheng, Dongmei & Lu, Bin, 2023. "Optical path model and energy performance optimization of aerogel glazing system filled with aerogel granules," Applied Energy, Elsevier, vol. 334(C).
    2. Li, Xueling & Li, Renfu & Chang, Huawei & Zeng, Lijian & Xi, Zhaojun & Li, Yichao, 2022. "Numerical simulation of a cavity receiver enhanced with transparent aerogel for parabolic dish solar power generation," Energy, Elsevier, vol. 246(C).
    3. Tan, Yutong & Peng, Jinqing & Luo, Yimo & Luo, Zhengyi & Curcija, Charlie & Fang, Yueping, 2022. "Numerical heat transfer modeling and climate adaptation analysis of vacuum-photovoltaic glazing," Applied Energy, Elsevier, vol. 312(C).

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