INVESTIGATION ON PHOTOTHERMAL TRANSFER MECHANISM OF AEROGEL BASED ON MICROSCOPIC DISCRETE STRUCTURE

Liu Yang; Ren Rumeng; Qi Hong; Wang Yujie; Li Xueling; Wan Zhenjie

doi:10.19912/j.0254-0096.tynxb.2025-0771

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (9) : 378-386. DOI: 10.19912/j.0254-0096.tynxb.2025-0771

INVESTIGATION ON PHOTOTHERMAL TRANSFER MECHANISM OF AEROGEL BASED ON MICROSCOPIC DISCRETE STRUCTURE

Liu Yang, Ren Rumeng, Qi Hong, Wang Yujie, Li Xueling, Wan Zhenjie

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Abstract

This study employs the quartet structure generation set to construct the aerogel microstructure. The solar extinction coefficient of monolithic aerogel is simulated using the Monte Carlo method, and its thermal conductivity is predicted based on the Lattice Boltzmann model. The effects of porosity and particle diameter on the optical-thermal performance are systematically analyzed. The results indicate that porosity and particle diameter exert a more significant influence on the solar extinction coefficient, while porosity has a greater impact on thermal conductivity than particle diameter. Specifically, a reduction of approximately 12% in porosity leads to a reduction of about 25% in thermal conductivity, whereas the effect of particle diameter on thermal conductivity is negligible. Finally, building energy consumption in a cold region （taking Zhengzhou as an example） is simulated using a dynamic heat transfer model. It is found that aerogel glazing with larger porosity and particle diameter can reduce energy consumption by nearly 34%.

Key words

aerogels / heat transfer / Monte Carlo method / Lattice Boltzmann model / microstructure

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Liu Yang, Ren Rumeng, Qi Hong, Wang Yujie, Li Xueling, Wan Zhenjie. INVESTIGATION ON PHOTOTHERMAL TRANSFER MECHANISM OF AEROGEL BASED ON MICROSCOPIC DISCRETE STRUCTURE[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 378-386 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0771

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