Effect of organics on the adhesion of dust to PV panel surfaces under condensation

Pengluan Huang, Guoqiang Hu, Xiaodong Zhao, Luyi Lu, Honggang Ding and Jianlan Li

Energy, 2022, vol. 261, issue PB

Abstract: The deposition and adhesion of dust on the surface of photovoltaic (PV) panels cause a reduction in efficiency and pose safety hazards. It is necessary to investigate the factors and mechanisms of dust adhesion to PV panels to provide theoretical guidance in preventing the dust from adhering on the PV panels. This study analysed the chemical components of actual dust samples from five typical scenarios for PV applications, measured the adhesion strength of dust to PV panels with different organic contents under condensation, observed and analysed the morphology of dust adhesion interface, based on a series of experiments. At last, the mechanism by which organics promote dust adhesion was investigated. The results showed that human activities (life, transportation, production, and so on) were one of the main reasons for the difference of dust composition, especially for organic content. It was discovered that a higher organic content or more condensation cycles enhanced the adhesion strength. Condensation leaded to the accumulation of organics at the adhesion interface to form organic films, which increased the contact area at adhesion interface. Moreover, the organic films may form hydrogen bonds with the hydroxylated silica surface of the PV panels, increasing the adhesion strength. Finally, recommendations were provided to inhibit the dust adhesion to the PV panels.

Keywords: Renewable energy; PV panel; Dust; Organics; Condensation; Adhesion (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:261:y:2022:i:pb:s0360544222021417

DOI: 10.1016/j.energy.2022.125255

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