However, if the area of the solar panel is large, it is expensive to ask someone to wipe it. Therefore, some solar cleaning manufacturers use clean water recycling devices to reduce water consumption as much as possible; or introduce alkaline electrolyzed water that does not leave scale ; and Instead of tap water cleaning solution , or just use pure water , etc. According to solar media Sorasapo's interviews with major solar panel "manufacturers" such as Panasonic, Mitsubishi, and Kyocera ( they are manufacturers, not maintenance and cleaning manufacturers), most of them suggest that the water pipe should be connected to tap water for washing, or add a little glass for washing.
Some supplements suggest not to use telemarketing list groundwater containing minerals (related to scale). Some remind that the temperature difference between the flushing water and the solar panel should not be too large. For example, the solar panel is hot and the water is cold, and vice versa. Third, if using a high pressure washer, do not let the high pressure water wash the solar panel directly. In large areas, some people use high pressure washers to save manpower, which in addition to damaging the solar panels (creating very small cracks), in the worst case, can allow water to penetrate the interior of the solar panel and cause failure.
Therefore, when using a high-pressure washer, it is best to use a dedicated nozzle to reduce pressure, such as using water pressure to push a nozzle that can be rotated and sprayed around. But this does not mean that direct washing is absolutely impossible, nor does it mean that there will be problems with a high pressure washer. Because cleaning always requires money and costs, especially the high labor cost, some cleaning manufacturers suggest that in addition to the light-receiving surface of solar panels that can generate electricity and make money, such as the dirt on the stand, even if it is not beautiful, it may also ruin the mood , but don't take it too seriously based on cost-effectiveness. But if there is rust, it may cause collapse in the future, it still has to be dealt with.