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首页> 外文期刊>Building and Environment >Evaluation of photovoltaic-green and other roofing systems by means of ReCiPe and multiple life cycle-based environmental indicators
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Evaluation of photovoltaic-green and other roofing systems by means of ReCiPe and multiple life cycle-based environmental indicators

机译：通过ReCiPe和基于多个生命周期的环境指标评估光伏绿色和其他屋顶系统

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The present study evaluates the environmental profile of a PV-green roof (PV panels over a soil/plant layer) and other roofing systems (PV-bitumen, PV-gravel, gravel, extensive green and intensive green). The analysis is based on multiple life-cycle impact assessment methodologies (ReCiPe, etc), several scenarios (for example with and without recycling) and it provides a deeper analysis as well as additional results to authors' previous investigation about PV-green roofs. The evaluation of the PV-green system (in terms of material manufacturing phase) shows that PV laminates (multi-Si) and steel components (joist, decking, balance of system) are responsible for the greatest part of the total footprint, based on GWP (global warming potential) and ReCiPe. Among the roofs which do not produce electricity, material manufacturing phase reveals that intensive green configuration has considerably higher impact in comparison with gravel and extensive green systems. Concerning PV roofs, PV-green configuration on a long-term basis (by considering material manufacturing, use phase, transportation and disposal), after a critical point, pays back its additional environmental impact (related with the "green layer") and it becomes more eco-friendly than the other two PV roofs. Certainly, this is due to the benefits (cooling effect of evapotranspiration, etc) of the soil/plant layer which result in PV output increase. The above mentioned critical point is determined by means of ReCiPe payback time and greenhouse-gas payback time. Several environmental indicators are calculated and presented along with results from the literature. A critical discussion is also provided. (C) 2015 Elsevier Ltd. All rights reserved.
机译：本研究评估了PV绿屋顶（土壤/植物层上的PV板）和其他屋顶系统（PV沥青，PV碎石，砾石，大面积绿色和密集绿色）的环境特征。该分析基于多种生命周期影响评估方法（ReCiPe等），多种方案（例如有无回收利用），它为作者先前对PV绿屋顶的调查提供了更深入的分析以及其他结果。对PV-green系统的评估（在材料制造阶段）表明，PV层压板（多硅）和钢部件（托梁，地板，系统平衡）占总占地面积的最大部分，基于全球升温潜能值（全球变暖潜能值）和回收率。在不发电的屋顶中，材料制造阶段表明，与砾石和广泛的绿色系统相比，密集的绿色结构具有更大的影响。关于光伏屋顶，在达到临界点后，长期（通过考虑材料制造，使用阶段，运输和处置）的光伏绿色配置，将偿还其额外的环境影响（与“绿色层”有关），与其他两个PV屋顶相比，变得更加环保。当然，这是由于土壤/植物层的好处（蒸发蒸腾的冷却作用等）导致PV输出增加。上述临界点由ReCiPe回收期和温室气体回收期确定。计算并提出了几种环境指标以及文献结果。还提供了重要的讨论。 （C）2015 Elsevier Ltd.保留所有权利。

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