SEASONAL PERFORMANCE ANALYSIS OF RADIATIVE COOLING COMPOSITE SOLAR CELLS

Bi Tao; Gu Wenbo; Xu Duowei

doi:10.19912/j.0254-0096.tynxb.2025-0210

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (6) : 774-781. DOI: 10.19912/j.0254-0096.tynxb.2025-0210

SEASONAL PERFORMANCE ANALYSIS OF RADIATIVE COOLING COMPOSITE SOLAR CELLS

Bi Tao^1,2, Gu Wenbo^1,2, Xu Duowei^1,2

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Abstract

This paper explores the effects of attaching radiative cooling films at different positions of solar cells in different seasons on their thermoelectric performance through experiments and simulations. The results show that attaching a radiative cooling film on the front side can significantly reduce temperature, but due to the decrease in transmittance, the electrical performance is lost by nearly 70%; while attaching a film on the back side can reduce the average temperature by 5.08 ℃ in summer, and the power is approximately increased by 2%, maintaining a high photoelectric conversion efficiency while effectively reducing the module temperature, In terms of the comprehensive performance of thermal management and power generation efficiency, it performs even better. In summer, the film on the back side has a good cooling effect, and in a low-temperature environment with an average ambient temperature of -10 ℃ in winter, the temperature difference of the module decreases by 0.59 ℃. By reducing the temperature difference, the service life can be extended. At the same time, the radiative cooling effect is affected by irradiance, ambient temperature and wind speed. The cooling effect of attaching a film is more prominent under high temperature and high irradiance conditions, while enhancing convection will weaken its cooling effect.

Key words

radiative cooling / photovoltaic modules / thermal management / thermoelectric performance / photoelectric conversion efficiency / cooling effect

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Bi Tao, Gu Wenbo, Xu Duowei. SEASONAL PERFORMANCE ANALYSIS OF RADIATIVE COOLING COMPOSITE SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2026, 47(6): 774-781 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0210

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