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Sustainability and efficient use of building-integrated photovoltaic curtain wall array (BI-PVCWA) systems in building complex scenarios
Energy and Buildings ( IF 6.7 ) Pub Date : 2022-09-20 , DOI: 10.1016/j.enbuild.2022.112477
Wei Xiong , Xu Deng , Zhongbing Liu , Ruimiao Liu , Zhenghong Wu , Ling Zhang

Photovoltaic Curtain Wall Array (PVCWA) systems in cities are often in Partial Shading Conditions (PSCs) by objects, mainly neighboring buildings, resulting in power loss and even hot spot effects. Changing the topology of the PVCWA system can effectively reduce the losses caused by PSCs. However, current studies rarely consider the annual optimal topology as a whole. Therefore, this paper develops and validates a power model for PVCWA in building complexes, using the model to simulate the power generation of Series(S), Parallel(P), Vertical-Series-Parallel(V-SP), Horizontal-Series-Parallel(H-SP), Vertical-Total-Cross-Tied(V-TCT), and Horizontal-Total-Cross-Tied(H-TCT) arrays in different cities and different surrounding building heights. The results show that the power generation performance of each topology of PVCWA in a building complex varies in real time. With the same building layout, the geographical location has less effect on the power generation ranking of different topologies of PVCWA, but it affects the power generation gap of different topologies. And the surrounding building height affects the shading characteristics of the shaded PVCWA system. H-SP and V-TCT arrays can mitigate the effect of horizontal shading more effectively, while V-SP and H-TCT arrays can mitigate the effect of vertical shading more effectively. This research can provide a basis for the application of PVCWA systems in buildings.



中文翻译:

建筑一体化光伏幕墙阵列(BI-PVCWA)系统在建筑复杂场景中的可持续性和高效利用

城市中的光伏幕墙阵列(PVCWA)系统经常被物体(主要是邻近的建筑物)处于部分遮光条件(PSC)中,从而导致功率损耗甚至热点效应。改变PVCWA系统的拓扑结构可以有效降低PSCs造成的损失。然而,目前的研究很少将年度最优拓扑作为一个整体考虑。因此,本文开发并验证了建筑群中 PVCWA 的功率模型,使用该模型模拟串联(S)、并联(P)、垂直-串联-并联(V-SP)、水平-串联-平行(H-SP)、垂直总交叉(V-TCT)和水平总交叉(H-TCT)阵列在不同城市和不同的周边建筑高度。结果表明,建筑群中PVCWA各拓扑的发电性能实时变化。在建筑布局相同的情况下,地理位置对PVCWA不同拓扑的发电量排名影响较小,但会影响不同拓扑的发电量差距。并且周围的建筑高度影响遮阳PVCWA系统的遮阳特性。H-SP 和 V-TCT 阵列可以更有效地减轻水平阴影的影响,而 V-SP 和 H-TCT 阵列可以更有效地减轻垂直阴影的影响。本研究可为PVCWA系统在建筑中的应用提供依据。但它会影响不同拓扑的发电差距。并且周围的建筑高度影响遮阳PVCWA系统的遮阳特性。H-SP 和 V-TCT 阵列可以更有效地减轻水平阴影的影响,而 V-SP 和 H-TCT 阵列可以更有效地减轻垂直阴影的影响。本研究可为PVCWA系统在建筑中的应用提供依据。但它会影响不同拓扑的发电差距。并且周围的建筑高度影响遮阳PVCWA系统的遮阳特性。H-SP 和 V-TCT 阵列可以更有效地减轻水平阴影的影响,而 V-SP 和 H-TCT 阵列可以更有效地减轻垂直阴影的影响。本研究可为PVCWA系统在建筑中的应用提供依据。

更新日期:2022-09-20
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