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Solar energy has been gaining ground as a sustainable alternative, but natural phenomena such as hail can compromise the durability of panels. To solve this problem, scientists have developed a simple and efficient method that protects photovoltaic panels from severe impacts.
In recent years, hail has become a growing problem for many industries. Climate change has increased the frequency and intensity of these storms, causing significant damage. Among the most affected are solar panels, which can suffer irreparable damage.
Scientists have identified a practical solution to reduce this impact: using thicker glass.
The impact of hail on solar panels
Hail can severely damage photovoltaic modules. When hailstones hit the panels, they can cause micro-cracks that are invisible to the naked eye.
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Over time, these cracks reduce the efficiency of the system and can lead to complete failure. In more extreme cases, the impact can completely shatter the glass panel.
Tests show the resistance of different thicknesses
Researchers of Vellore Institute of Technology, in partnership with Waaree Energies Ltd. and City University, tested the resistance of solar panels to hail. In the study, three models with different glass thicknesses were evaluated: 2,8mm, 3,2mm and 4mm.
The tests subjected the panels to impacts from hailstones ranging from 7,5 g to 80 g, with diameters ranging from 25 mm to 55 mm, thrown at speeds of up to 34 m/s. The results were clear: the panels with thicker glass suffered less damage.
- 4mm glass lost only 1,1% of its strength after impact with 55mm hail.
- The 3,2mm and 2,8mm models lost 11,74% and 21,8% of power, respectively.
- The thinner panels suffered significant cracking and could not withstand the impact of 45mm hail.
These data indicate that glass thickness is a decisive factor in increasing the durability of panels in risk areas.
The importance of choosing thicker glass
Based on the results of the study, scientists recommend that regions prone to hailstorms adopt solar panels with front glass at least 4 mm thick. This small adjustment can prevent significant damage in the long term.
Currently, the standard glass thickness for panels on the market is 3,2 mm. Although this is sufficient for regions with lower incidence of hail, it does not offer adequate protection in vulnerable areas.
Opting for thicker glass may represent a higher initial cost, but it reduces future expenses with maintenance and replacement of damaged modules.
Another alternative to protect solar panels is the use of reinforced coverings or investing in insurance against extreme weather events.
However, these options can generate considerable additional costs. The adoption of thicker glass presents itself as an effective and economically viable solution to minimize damage.
Hail protection is essential for the future of solar energy
With the growing demand for renewable energy, ensuring the durability of photovoltaic systems is essential.
The impact of hail can compromise electricity production and generate high costs for repairs and replacements. The solution presented by the scientists is practical and can be widely applied in the sector.
The study reinforces the importance of investing in technology to make solar energy more resistant to adverse weather conditions.
For those who live in regions with a high incidence of hail, considering choosing panels with thicker glass can be a smart and cost-effective decision.
More information about the study can be found at sciencedirect.com. Advancing research in this area remains essential to ensuring the efficiency of photovoltaic systems in the future.
More information about the study at ScienseDirect.
