Abstract Building integrated photovoltaics (BIPV) are becoming a viable solution for clean on-site energy production and utilisation. In tropical climates, although rooftops are ideal for photovoltaic (PV) module integration, the available area may be insufficient to meet building energy demand due to the increase in high-rise urban buildings, causing a requirement for the utilisation of facades. However, the high solar elevation angle means that facades are unfavourably oriented towards receiving incident irradiation. Also, the issue exists of high solar heat gains into built spaces. This paper evaluates the utilisation of horizontally inclined PV integrated shading strategies to combat these issues based on the urban context of Colombo, Sri Lanka. Various strategies are evaluated in terms of their inclination angles and the distance between installations, and urban blocks in Colombo are analysed in terms of how they affect the solar potential in the urban canyon. The results are analysed in terms of economic potential to determine the optimised installation strategies based on urban block type. The results suggest that installations inclined at 30° at a distance-to-length ratio of 4 provide the greatest economic viability in this context.

中文翻译：

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城市街区商业建筑立面光伏集成遮阳策略的经济潜力分析：以斯里兰卡科伦坡为例

摘要 光伏建筑一体化（BIPV）正在成为清洁现场能源生产和利用的可行解决方案。在热带气候下，虽然屋顶是光伏（PV）模块集成的理想场所，但由于城市高层建筑的增加，可用面积可能不足以满足建筑能源需求，从而对立面的利用提出了要求。然而，高太阳仰角意味着正面不利于接收入射辐射。此外，还存在进入建筑空间的高太阳能热增益的问题。本文基于斯里兰卡科伦坡的城市环境，评估了利用水平倾斜的光伏集成遮阳策略来解决这些问题。根据倾斜角度和装置之间的距离对各种策略进行评估，并根据它们如何影响城市峡谷中的太阳能潜力来分析科伦坡的城市街区。根据经济潜力对结果进行分析，以确定基于城市街区类型的优化安装策略。结果表明，在这种情况下，以 4 的距离长度比倾斜 30° 的安装提供了最大的经济可行性。