The double-glass construction of bifacial solar panels enhances their resilience through several key mechanisms:
- Mechanical Strength and Load Resistance: The design features solar cells sandwiched between two equally thick glass layers, which significantly improves mechanical robustness. This balanced structure minimizes compressive and tensile stresses on the cells, making the panels highly resistant to mechanical loads such as wind pressure, snow loads, and other environmental forces.
- Thermal Stress Mitigation: Both glass layers have identical thermal expansion properties, meaning they expand and contract at the same rate under temperature changes. This synchronous behavior reduces stress on the embedded solar cells, preserving their integrity and extending panel lifespan under fluctuating weather conditions.
- Protection Against Environmental Factors: Double-glass panels provide superior shielding from humidity, ammonia, salt spray, and fire, thanks to the fully encapsulated glass layers on both sides. This reduces degradation from environmental exposure and enhances durability in harsh conditions such as industrial or coastal environments.
- Reduced Potential-Induced Degradation (PID): The double glass encapsulation also contributes to minimizing potential-induced degradation, a common cause of solar panel performance decline over time. Consequently, these panels often come with longer warranties, sometimes up to 30 years, reflecting their enhanced longevity.
- Overall Longevity and Stability: The double-glass structure stabilizes the panel physically and chemically, resulting in longer operational lifespans compared to traditional single glass or glass-backsheet modules. Their resistance to various mechanical and environmental stresses ensures steady, long-term energy output and system reliability.
In summary, the double-glass construction of bifacial solar panels results in a highly durable, stable, and resilient module that withstands mechanical loads, thermal cycling, and environmental exposure better than conventional solar panels, thereby extending service life and maintaining performance over time.
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