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首页> 外文期刊>Heat Transfer Engineering >Flat-Plate Solar Collector Performance with Coated and Uncoated Glass Cower
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Flat-Plate Solar Collector Performance with Coated and Uncoated Glass Cower

机译：平板式太阳能集热器的性能，带涂层和不带涂层的玻璃Cow缩

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Most solar collectors employ a transparent cover plate often made of glass. These materials reflect around 8% of the incident solar radiation, which leads to the reduction in the collector heat output. The use of an antireflection coating could therefore improve the performance of such a system by increasing the transmitted energy through the glass cover. Recently, a silica low-reflection coating via a dip-coating process has been developed. The refractive index of the thin film is well controlled. The exact value of the film refractive index that leads to a minimum of reflection on the surface of the glass cover can be achieved. A comparison has been made between an uncoated flat-plate solar collector glass cover and one with a porous sol-gel antireflection coating. Using the porous sol-gel coating with the index of refraction of n = 1.23 on the glass cover of the solar collector increases the useful energy by a factor of approximately 1.05.
机译：大多数太阳能收集器采用通常由玻璃制成的透明盖板。这些材料反射了约8％入射太阳辐射，这导致收集器热量输出减少。因此，通过增加通过玻璃盖的透射能量，抗反射涂层的使用可以改善这种系统的性能。近来，已经开发了通过浸涂工艺的二氧化硅低反射涂层。薄膜的折射率得到很好的控制。可以实现导致玻璃盖表面反射最小的薄膜折射率的精确值。在未涂覆的平板状太阳能收集器玻璃盖与具有多孔溶胶-凝胶抗反射涂层的平板玻璃盖之间进行了比较。在太阳能收集器的玻璃盖上使用折射率为n = 1.23的多孔溶胶-凝胶涂层，可以将有用能量提高大约1.05倍。

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