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GREENHOUSE WITH AN INTEGRATED CONCENTRATED PV SYSTEM

机译：集成式集中光伏系统的温室

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摘要

The scope of this investigation is the development of a new type of greenhouse with an integrated filterfor rejecting near infrared radiation (NIR) and a solar energy delivery system. Cooled greenhouses are an importantissue to cope with the combination of high global radiation and high outdoor temperatures. As a first measure, thespectral selective cover material, which prevents the entrance of NIR radiation, is investigated. The special spectralselective properties of these materials have to block up to 50% of the solar energy outside the greenhouse, which willreduce the needed cooling capacity. The second measure is the integration of a solar energy system. When the NIRreflecting coating is designed as a parabolic or circular shaped reflector integrated in the greenhouse, the reflectedsolar energy of a PhotoVoltaic (PV) cell in the focus point delivers electric energy. With a ray tracing computerprogram the geometry of the reflector was optimally designed with respect to the maximum power level. The PVcells mounted in the focal point require cooling due to the high heat load of the concentrated radiation (concentrationfactor of 30-40). The properties of different materials, Ge, GaSb, CIS and Si cells were investigated to find theoptimal cell for this application. All part are integrated in a greenhouse structure with a size of about 100m~2.
机译：该研究的范围是开发一种带有集成过滤器的新型温室 用于拒绝近红外辐射（NIR）和太阳能输送系统。冷藏温室是重要的 应对全球辐射高和室外高温的问题。作为第一步， 研究了防止近红外辐射进入的光谱选择性覆盖材料。特殊光谱 这些材料的选择性特性必须阻挡温室外高达50％的太阳能。 降低所需的冷却能力。第二项措施是整合太阳能系统。当近红外 反射涂层设计为集成在温室中的抛物线形或圆形反射器， 焦点处的光伏（PV）电池的太阳能提供电能。带有光线追踪计算机 在程序中，反射器的几何形状相对于最大功率水平进行了优化设计。光伏 由于集中辐射的高热负荷（集中），安装在焦点上的电池需要冷却 系数30-40）。研究了不同材料Ge，GaSb，CIS和Si电池的性能，以发现 此应用程序的最佳单元。所有部分都集成在一个约100m〜2的温室结构中。

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