Cleaning components can improve the system's power generation efficiency. The life span of a typical PV module is about 25 years, and it is necessary to regularly clean the screen, dust, leaves and other shields. If you love to be clean and have higher requirements for power generation, you can also clean components yourself, but you need to pay attention to the following points:
1. The cleaning must be clean and thorough, if leaving a dead corner may cause serious effects such as hot spot effect. Under normal illuminance conditions, parts of the battery board that are not cleaned will change from the power generation unit to the power consumption unit. The shaded photovoltaic battery will become a load resistance that does not generate electricity, and consume the power generated by the connected battery, that is, heat, which is heat Spot effect. This process will exacerbate the aging of the panel, reduce the output, and cause fire in severe cases.
2. In order to avoid the risk of electric shock to the human body by wiping the module under high temperature and strong light and possible damage to the module, it is generally preferred to perform component cleaning in the morning or in the late afternoon.
3. Use a special cleaning solution. Some users use ordinary tap water or well water to clean and clean the battery board. Because the water contains many impurities, it will adhere to the surface glass plate of the battery assembly and reduce the solar power generation efficiency. Experiments have shown that the use of tap water to flush the battery board will reduce the power generation efficiency by more than 1.8% compared to the use of a dedicated cleaning solution.
4. Before performing component cleaning, check whether there is any abnormal power output in the monitoring record. Analyze whether it can be caused by leakage, and check whether the component's connection lines and related components are damaged or stuck. Before cleaning, you need to use The test pencil tests the aluminum frame, bracket, and tempered glass surface of the assembly. To eliminate potential leakage hazards and ensure personal safety.
5. Photovoltaic modules Aluminium frames and photovoltaic supports have many sharp corners. Therefore, personnel performing component cleaning should wear appropriate work clothes and wear hats to avoid scratching. Hooks and straps should be prohibited on clothing or tools. Lines and other parts that are likely to cause drag.
6. It is forbidden to step on PV systems, rail brackets, cable trays, and other photovoltaic system equipment or other methods to leverage component boards and brackets.
7. According to the local comprehensive conditions to develop a reasonable schedule of cleaning time, to ensure a scientific and efficient cycle cleaning plan to meet the power generation efficiency requirements. The cleaning of photovoltaic modules under meteorological conditions with strong winds, heavy rain, thunderstorms or heavy snow is strictly prohibited. In the winter snow season, the battery pack cannot be cleaned with water. In some seasons, there is still the problem of condensation and icing of the battery panel. Devices that have functions of removing snow, dew, deicing, and waterless cleaning should be used. Likewise, do not use the panel when the panel is very hot. Rinse with cold water.
8. It is forbidden to use hard and sharp tools or corrosive solvents and alkaline organic solvents to wipe the PV modules. It is forbidden to spray cleaning water to the device junction boxes, cable trays, and combiner boxes. The impact pressure of the cleaning device on the components during cleaning must be controlled within a certain range to avoid cracking caused by improper force.
9. When cleaning personnel, it is forbidden to stand at a place less than 1 meter from the edge of the roof. We must not throw tools and debris down. Take away after cleaning.
Choosing the right cleaning tool and method can improve the life of the panel, but if the methods and tools used are not appropriate, it will easily cause the surface of the battery to wear and affect the power generation capacity and the product life of the panel.
It is not recommended for users to clean themselves without knowing the relevant professional cleaning knowledge. It is best to have professional PV cleaning personnel perform cleaning and overhaul to better ensure that the PV modules are not damaged during the cleaning process.
Water Purifier Kitchen Faucets
The faucets used in general households are unified, and there is no distinction between drinking water and water. But in some western countries, to provide special water purification pipeline, it is required to have a water purification faucet. There is no difference between the clean faucet and the general faucet, but the raw water is different.
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