Volcanic ash presents a significant challenge for the maintenance of photovoltaic (PV) modules due to its high corrosive properties. Comprising sulfur and other mineral matters, volcanic ash can quickly deteriorate the surface of solar panels if not promptly and correctly cleaned. To safeguard your investment and ensure optimal performance, it is essential to follow specific cleaning protocols. Below, we outline effective strategies to clean volcanic ash from PV modules, ensuring the longevity and efficiency of your solar installation.
Recommended Cleaning Practices
When dealing with volcanic ash on PV modules, employing the correct materials and techniques is crucial. Here are the recommended practices to follow:
- Utilize soft cleaning tools such as foam materials, non-woven fabrics, whisks, soft sponges, soft brushes, and hair brushes. These tools help prevent scratching the glass surface of the modules.
- For hair brushes, ensure the material is made of special nylon wires (specifically nylon wire 1010) with a diameter between 0.1-0.06 mm, suitable for cleaning ARC-glass.
- Commercial glass cleaners, as well as alcohol-based solutions like ethanol or methanol, are effective for removing ash without damaging the module surface.
- When using water for cleaning, maintain the pressure below 690 KPa to avoid damaging the module. It is advisable to use municipal water, which generally contains low mineral content, to prevent residue deposits on the glass.
Practices to Avoid
While cleaning volcanic ash from PV modules, certain practices should be strictly avoided to prevent damage and ensure safety:
- Refrain from using bare fingers or hands without gloves to touch the module surface. Always wear clean gloves to avoid leaving fingerprints or dirt on the glass.
- Avoid metal tools such as blades, knives, or steel wool, as well as any abrasive materials. These can scratch and damage the module surface.
- Do not use abrasive powders, cleaners, scrubbers, or polishing agents that may harm the glass. Similarly, avoid chemicals like sodium hydroxide, benzene, nitro-thinners, acids, and alkalis.
- Steam cleaning or using corrosive chemicals to expedite the process should be avoided, as they can damage the module surface.
- Never attempt to clean broken glass or modules with exposed wires, as this poses a risk of electric shock.
- Avoid stepping, standing, or sitting on the modules during the cleaning process to prevent accidental damage.
Conclusion
Cleaning volcanic ash from PV modules requires careful attention and adherence to recommended practices. By using the appropriate materials and avoiding detrimental techniques, you can protect your solar investment and maintain the efficiency of your modules. Implementing these strategies will help ensure your solar panels remain in optimal condition, even in environments prone to volcanic ash exposure.