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IMPROVING THE EFFECTIVENESS OF PHOTOVOLTAIC DEVICES BY LIGHT GUIDING OPTICAL FOILS

机译:通过光导光学箔提高光电器件的效率

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摘要

A photovoltaic device comprising of a light guiding optical foil attached on a flexible PV module is investigated. In particular results on the feasibility to use such a device for combined daylighting and photovoltaic energy generation are presented. Optical simulations have been conducted for a device-design optimized to redirect most of perpendicular impinging light rays onto photovoltaic areas. Two application cases are investigated for integrating the photovoltaic device into windows and/or glazings in middle (northern) latitudes. The first application case deals with an overhead glazing and the second deals with a window integrated in a roof tilted by 30° towards south. For the latter case encouraging results have been derived, In particular it is calculated that during summer time more than 70% of the direct sunlight is absorbed by photovoltaic areas and less than 10% is transmitted. Consequently, effective shading in summer against direct sunlight can be achieved and most of the shaded solar irradiation can be used for photovoltaic energy conversion, In contrast, in winter time about 40% of the direct sunlight is transmitted through the device and allows for decent daylighting.
机译:研究了包括附接在柔性PV模块上的光导光学箔片的光伏装置。尤其是关于将这种设备用于组合日光和光伏能量产生的可行性的结果。已经针对设备设计进行了光学仿真,该设备设计经过优化,可以将大多数垂直入射光线重定向到光伏区域。为了将光伏装置集成到中(北)纬度的窗户和/或玻璃中,研究了两个应用案例。第一个应用案例涉及架空玻璃,第二个应用案例涉及集成在向南倾斜30°的屋顶中的窗户。对于后一种情况,得出了令人鼓舞的结果,特别是,据计算,在夏季,光伏区域吸收了超过70%的直射阳光,而仅透射了不到10%的阳光。因此,可以在夏季实现有效的遮阳以抵御直射的阳光,并且可以将大部分带阴影的太阳辐射用于光伏能量转换。相反,在冬季,大约40%的直射阳光通过设备传输,并可以实现良好的采光。

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