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Study on the influence of dust accumulation on the optical performance of trough solar concentrator under different rainfall intensities based on alpine areas

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  • Wang, Zhimin
  • Kong, Fance
  • Yuan, Tuo
  • Deng, Tianrui

Abstract

Aiming at the typical characteristics of natural rainfall in alpine areas and the structure of the concentrator surface, based on the design scheme of the trough system test platform, the optical performance and cleaning characteristics of the mirror with rainfall intensity and concentrator tilt angle as variables are studied experimentally. The results show that small-scale rainfall has a critical tilt angle of positive and negative cleaning effect on transverse region1. Lower than this tilt angle causes pollution to the mirror surface. Rainfall above medium intensity has a positive cleaning effect on all mirror regions. The cleaning ability is the highest under the rainfall of 60° tilt angle of 38.9 mm. The bottom-up enhanced cleaning law in the transverse region is more significant under high-intensity rainfall, and the concentrator tilt angle is more sensitive to dust desorption than rainfall intensity. The average relative error and average root mean square error of the predicted reflectivity of the global mirror are 3.82% and 0.061 respectively, and the fitting accuracy is high. It provides theoretical guidance for the application of dust removal schemes and prediction of the optical performance of trough solar system in alpine areas.

Suggested Citation

  • Wang, Zhimin & Kong, Fance & Yuan, Tuo & Deng, Tianrui, 2024. "Study on the influence of dust accumulation on the optical performance of trough solar concentrator under different rainfall intensities based on alpine areas," Renewable Energy, Elsevier, vol. 222(C).
    • Handle: RePEc:eee:renene:v:222:y:2024:i:c:s096014812301813x
    DOI: 10.1016/j.renene.2023.119898
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    References listed on IDEAS

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    1. Del Pero, Claudio & Aste, Niccolò & Leonforte, Fabrizio, 2021. "The effect of rain on photovoltaic systems," Renewable Energy, Elsevier, vol. 179(C), pages 1803-1814.
    2. Gholami, Aslan & Saboonchi, Ahmad & Alemrajabi, Ali Akbar, 2017. "Experimental study of factors affecting dust accumulation and their effects on the transmission coefficient of glass for solar applications," Renewable Energy, Elsevier, vol. 112(C), pages 466-473.
    3. Bouaddi, S. & Ihlal, A. & Fernández-García, A., 2017. "Comparative analysis of soiling of CSP mirror materials in arid zones," Renewable Energy, Elsevier, vol. 101(C), pages 437-449.
    4. Wu, Ze & Yan, Suying & Wang, Zefeng & Ming, Tingzhen & Zhao, Xiaoyan & Ma, Rui & Wu, Yuting, 2020. "The effect of dust accumulation on the cleanliness factor of a parabolic trough solar concentrator," Renewable Energy, Elsevier, vol. 152(C), pages 529-539.
    5. Salari, Ali & Hakkaki-Fard, Ali, 2019. "A numerical study of dust deposition effects on photovoltaic modules and photovoltaic-thermal systems," Renewable Energy, Elsevier, vol. 135(C), pages 437-449.
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