شبيه‌سازي عددي خنك‌كاري سلول‌هاي خورشيدي به كمك مواد تغيير فازدهنده

In this research, the performance of solar panels under realistic environmental conditions is analyzed and simulated using ANSYS Fluent software. Unlike many existing studies that pay little attention to the impact of environmental factors on panel performance, this study specifically focuses on the climatic conditions and environmental factors of Isfahan city. The primary aim of this study is to identify and propose effective solutions to reduce the temperature of solar panels. These measures directly contribute to enhancing the efficiency and lifespan of the panels, leading to the optimization of solar system performance in areas with specific climatic conditions. In this study, a combination of phase change materials and fins is utilized as a recently proposed method for cooling the panels. The results of numerical simulations showed that this combination has a significant impact on reducing the temperature of the panels, provided that the optimal chamber depth is selected. For example, using a depth of 80 mm led to a reduction in the panel temperature by approximately 9°C compared to a depth of 60 mm. In the second stage, the effect of thermal insulating coatings was examined. These coatings were tested to prevent heat transfer to the surrounding environment and improve the cooling performance. However, simulation results revealed that the use of thermal insulating coatings did not have a significant impact on improving the thermal performance of the panels. Finally, the impact of adding Aluminum Oxide nanoparticles with volume fractions of 4% and 6% to the phase change materials was also eva‎luated. The nanoparticles were added to increase the melting rate of the phase change materials and enhance the heat transfer process. It was found that although adding nano-particles and increasing their volume fraction increased the melting rate of the phase change material, it did not significantly reduce the final temperature of the panels. This research, through precise numerical simulations, provides effective solutions for optimizing solar panel cooling systems in specific climatic conditions. The results of this study can contribute to enhancing the efficiency and lifespan of solar panels and can serve as a basis for designing advanced solar systems in these climatic regions.

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