Mechanism underlying the effect of physical properties on the dynamic behaviours and erosion characteristics of particles on solar photovoltaic panels

Liu, Xueqing; Yue, Song; Lu, Luyi; Li, Jianlan

doi:10.1007/s11696-022-02175-3

Cited by 4 publications

(5 citation statements)

References 33 publications

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“…Hence, the value of the adhesion force between the particle and the PV glass at Dengkou varies from 3.7 to 84.3 nN. The order of magnitude of the adhesion forces agrees with the theoretical values and literature results . Furthermore, the mean adhesion force of the left part is smaller than that of the right part in Figure Aa because of the great difference in the particle surface roughness between the left and right parts.…”

Section: Resultssupporting

confidence: 86%

“…The order of magnitude of the adhesion forces agrees with the theoretical values and literature results. 24 Furthermore, the mean adhesion force of the left part is smaller than that of the right part in Figure 5Aa because of the great difference in the particle surface roughness between the left and right parts. For the dust particles from the ground at Dengkou shown in Figure 5Ab, the particle adhesion force is not a constant and varies from 1.2 to 68.2 nN.…”

Section: Adhesion Force Of Dust Accumulationmentioning

confidence: 91%

“…In this study, the dynamic viscous force is greatly weakened and can be neglected because of the small relative velocity of the needle tip in all experiments. 37 Based on the theoretical analysis of the van der Waals force and existing literature data, 24,41 the van der Waals force is an intermolecular force with an order of magnitude of 10 −12 to 10 −11 N. In contrast, our previous work found that the order of magnitude of the liquid bridge force was approximately greater than 10 −10 N. 24 Therefore, the particle adhesion forces on the ground and solar PV glass include the electrostatic force and liquid bridge force, as shown in Figure 2a and eq 6.…”

Section: Theoretical Model Of Adhesion Forcesmentioning

confidence: 99%

“…Khalid et al analyzed the factors contributing to particle accumulation on PV glass after deposition. 24 The results showed that particle aggregation can occur over the operating time of PV glass. Therefore, it is very necessary to conduct comprehensive research on the dust accumulation characteristics on PV glass after dust deposition.…”

Section: Introductionmentioning

confidence: 96%

“…They explained the reason for and source of the organic materials existing on the PV glass. Khalid et al analyzed the factors contributing to particle accumulation on PV glass after deposition . The results showed that particle aggregation can occur over the operating time of PV glass.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Adhesion Characteristics of Dust Accumulation on Solar Photovoltaic Glass

Liu,

Tao,

Cui

et al. 2023

Ind. Eng. Chem. Res.

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The vigorous development of photovoltaic (PV) power generation technology is crucial for addressing the high energy demand and severe environmental issues. The accumulation of dust on solar PV glass significantly decreases its ability to convert sunlight into electricity. In this study, the dust accumulation characteristics and a comparison of the particle adhesion forces on the ground and PV glass in Dengkou and Wuhan are investigated. In addition, the particle adhesion laws and dynamic behavior after deposition are studied. The results indicate that the distribution of dust particles on the PV glass and ground is non-uniform and the particle size and shape distributions diversify. The dust particles on the PV glass are mostly from the ground. The greatest and smallest mean adhesion forces are for the dust particles on the PV glass at Wuhan and the ground at Dengkou, respectively. The particle adhesion forces on PV glass mainly consist of the liquid bridge and electrostatic forces. The dominant adhesion force of particles varies across different ranges of air relative humidity. Increasing the air humidity can promote particle agglomeration and adhesion behavior, thus increasing the particle adhesion force on PV glass. ■ HIGHLIGHTS • A theoretical model of particle adhesion forces is built and validated. • The adhesion laws and dynamic behavior of particles on PV glass are studied. • Phase compositions and microcosmic morphology of on-site dust particles are shown. • The particle adhesion forces mainly include liquid bridge and electrostatic forces. • Particle agglomeration and adhesion degrees increase with increasing humidity.

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Section: Resultssupporting

confidence: 86%

Section: Adhesion Force Of Dust Accumulationmentioning

confidence: 91%