As an important part of renewable energy, the power generation efficiency of solar photovoltaic panels is directly affected by the cleanliness of the surface. Dust, dirt and other impurities accumulated on the surface of photovoltaic panels will not only reduce the transmittance of light, but also affect the conversion efficiency of photovoltaic cells, thereby reducing power generation. Therefore, regular cleaning of photovoltaic panels is one of the important measures to maintain their efficient operation. This article will discuss in detail the dry cleaning method of solar photovoltaic panels, analyze its advantages, operation steps and precautions.

1. Advantages of dry cleaning

Dry cleaning is a cleaning method that does not require the use of water or chemical detergents. It mainly removes dust and dirt on the surface of photovoltaic panels by physical means. Compared with wet cleaning, dry cleaning has the following advantages:

Environmental protection and energy saving: no water resources are consumed, no wastewater is discharged, and it conforms to the concept of green environmental protection.

Safety and efficiency: It avoids safety hazards such as electric shock and short circuit caused by the use of water and detergents, and the cleaning process is fast and efficient.

Protect photovoltaic panels: It avoids potential damage to the surface coating of photovoltaic panels due to water or detergents, and extends the service life of photovoltaic panels.

Strong applicability: In water-scarce areas or cold seasons, dry cleaning becomes a more feasible option.

2. Operation steps of dry cleaning

1. Preparation

Choose appropriate cleaning tools: Choose cleaning tools with soft texture that will not scratch the surface of photovoltaic panels, such as professional solar panel cleaning brushes, electrostatic dust removal cloths, etc.

Check the status of photovoltaic panels: Make sure that there are no cracks, deformations or other damage on the surface of photovoltaic panels to avoid further damage during the cleaning process.

Choose appropriate weather and time: Try to clean on sunny and windless days, and avoid operating in direct sunlight at noon to reduce the surface temperature of photovoltaic panels and improve the cleaning effect.

2. Preliminary cleaning

Remove floating dust: Use a soft brush or electrostatic dust removal cloth to gently brush away floating dust and loose dirt on the surface of photovoltaic panels.

Key cleaning: For areas with more dust or stubborn dirt, use a soft brush to gently scrub to avoid excessive force that may damage the surface of photovoltaic panels.

3. Deep cleaning

Use professional cleaning tools: For dirt that is difficult to remove, use professional solar panel cleaning tools for deep cleaning. These tools usually have electrostatic adsorption function, which can effectively adsorb and remove tiny particles and deep dirt.

Pay attention to the cleaning order: start from the top of the photovoltaic panel and gradually move downward to avoid repeated contamination of the cleaned area.

4. Inspection and sorting

Check the cleaning effect: After cleaning, carefully check whether the surface of the photovoltaic panel is clean and free of residue to ensure that all dirt has been removed.

Arrange cleaning tools: Arrange the used cleaning tools for next use.

III. Precautions

Avoid scratching with hard objects: During the cleaning process, it is strictly forbidden to use hard objects to scratch the surface of the photovoltaic panel to avoid scratching the glass surface and affecting the power generation efficiency.

Control the cleaning strength: Different operators have different strengths and different pressures on the photovoltaic panel. The cleaning strength should be controlled to avoid excessive pressure on the photovoltaic panel, causing deformation of the components or cracks in the battery cells.

Regular inspection and maintenance: In addition to regular cleaning, the brackets, connectors and battery components of the photovoltaic panel should also be checked regularly to ensure that their structure is firm, the connection is tight, and there is no obstruction and damage.

Pay attention to safety precautions: Pay attention to safety precautions during the cleaning process to avoid accidents such as falls and electric shocks. After bad weather (such as strong winds, hail, etc.), the integrity of the photovoltaic panels and brackets should be checked in time, and damaged parts should be repaired in time.

IV. Conclusion

Dry cleaning of solar photovoltaic panels is an environmentally friendly, safe and efficient cleaning method, which is suitable for photovoltaic panel cleaning needs in various environments. By reasonably selecting cleaning tools, mastering the correct operating steps and precautions, the cleanliness of the photovoltaic panel surface can be ensured, the power generation efficiency can be improved, and the service life can be extended. With the continuous advancement of technology and the improvement of environmental awareness, dry cleaning methods will play an increasingly important role in the maintenance of solar photovoltaic panels.