Textured glass is a possible means for reflection reduction of a photovoltaic module. Texturing not only increases the energy yield of the system through reduced reflection losses, but also can play a role in dissipating waste heat through enhancing convective and radiative heat loss. In this work, we describe three textured glass surfaces analytically and model them numerically at optical (400–1050 nm) and mid-infrared (MIR, 5–30 μm) wavelengths. Spectral and directional results are processed with a series of weight functions to evaluate the total transmission to determine the optical performance and the total MIR hemispherical emissivity for the thermal performance. It is found that the proposed textured surfaces could improve the total optical transmission by 3.3%–4.6% relative to planar glass for direct solar radiance and 4.9%–6.7% for diffuse component, whereas the total MIR hemispherical emissivity is boosted by 6.6%–9.3% relative. The current most commercially favored inverted pyramid pattern may not be the most effective glass surface texturing scheme based on optical and radiative enhancement or self-cleaning properties.

中文翻译：

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用于光伏组件的不同纹理玻璃的光学和热发射优势

带纹理的玻璃是减少光伏模块反射的可能手段。纹理不仅通过减少反射损失来增加系统的能量产率，而且还可以通过增强对流和辐射热损失来消散废热。在这项工作中，我们分析地描述了三种纹理玻璃表面，并在光学（400-1050 nm）和中红外（MIR，5-30 μm）波长下对它们进行了数值模拟。光谱和方向结果使用一系列权重函数进行处理，以评估总透射率，以确定光学性能和热性能的总 MIR 半球发射率。结果表明，相对于平面玻璃，所提出的纹理表面可以将总光透射率提高 3.3%–4.6%，相对于直接太阳辐射而言，提高了 4.9%–6%。7% 的漫反射分量，而总的 MIR 半球发射率相对提高了 6.6%–9.3%。当前最受商业青睐的倒金字塔图案可能不是基于光学和辐射增强或自清洁特性的最有效的玻璃表面纹理方案。