Microstructure of Surface Pollutants and Brush-Based Dry Cleaning of a Trough Concentrating Solar Power Station

Chenyang Wang, Jialin Guo, Jingyu Li, Xiaomei Zeng, Vasiliy Pelenovich, Jun Zhang, Bing Yang (), Xianbin Wang, Yu Du, Yikun Lei and Naibing Lu
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Chenyang Wang: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Jialin Guo: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Jingyu Li: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Xiaomei Zeng: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Vasiliy Pelenovich: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Jun Zhang: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Bing Yang: School of Power and Mechanical Engineering, Wuhan University, Wuhan 430062, China
Xianbin Wang: CGN Inspection Technology Co., Ltd., Shenzhen 518038, China
Yu Du: CGN Inspection Technology Co., Ltd., Shenzhen 518038, China
Yikun Lei: CGN Inspection Technology Co., Ltd., Shenzhen 518038, China
Naibing Lu: CGN Solar Energy (Delingha) Photovoltaic Co., Ltd., Delingha 817000, China

Energies, 2023, vol. 16, issue 7, 1-15

Abstract: The accumulation of pollutants on the surface of a Concentrating Solar Power (CSP) station reduces the power generation efficiency of the whole power plant, affects electricity output, and decreases sales income; therefore, it is particularly important to develop a reasonable and effective cleaning process. Surface pollutants which have a strong interaction with the cleaning process of power stations can determine the quality of cleaning to a certain extent. In this paper, the pollutants on the surface of a trough CSP station with different usage times were collected and characterized using a scanning electron microscope (SEM), a particle size analyzer (PSA), and a transmission electron microscope (TEM). It was found that most of the surface pollutants were of a fine size and included amorphous particles which mainly resulted from the sedimentation of particles suspended for a short time or particles in the process of atmospheric circulation for a long time. Considering the service life of the mirror and the scarcity of water resources in the area where the trough CSP power station is located, a brush-based dry cleaning process with different cleaning times was developed. By comparing the changes in the reflectivity and micro-morphology of the mirror surface before and after cleaning, the feasibility and superiority of the brush-based dry cleaning process were fully confirmed.

Keywords: concentrating solar power station; surface pollutants; microstructure; deposition mode; brush-based dry cleaning (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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