Abstract Building-integrated photovoltaic (BiPV) systems applied within a building envelope exhibit limited efficiency and durability due to their insufficient cooling capabilities. Thus, the need to decrease their operating temperature and increase overall electricity production poses relevant research challenges. The application of a phase change material (PCM) to the rear side of a PV module can provide both a decrease in PV panel temperature and thermal energy storage as well. The objective of the presented study is to identify the climate response of latent thermal energy storage (TES) integrated into a ventilated photovoltaic (PV) facade system. The main attention is focused on the thermophysical properties of the employed PCM in terms of the utilization of its overall latent heat capacity through the diurnal cycle of a day in the context of the mutual interaction between incident solar radiation and outside air temperature. A comparative investigation was conducted using experimental measurements taken during outdoor climate tests with the aim of determining the real performance of the facade system. The experimental results revealed that the effect on PV panel operating temperature of installing the selected PCM on the rear side of the panels is significant mainly at midday when high solar radiation is present.

中文翻译：

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基于潜在 PCM 的热能存储增强了 BiPV 幕墙系统的气候响应

摘要 应用于建筑围护结构的建筑集成光伏 (BiPV) 系统由于冷却能力不足而表现出有限的效率和耐用性。因此，降低它们的工作温度和增加总发电量的需要提出了相关的研究挑战。将相变材料 (PCM) 应用到 PV 模块的背面可以同时降低 PV 面板温度和热能存储。本研究的目的是确定集成到通风光伏 (PV) 立面系统中的潜热能储存 (TES) 的气候响应。主要注意力集中在所采用的 PCM 的热物理特性上，即在入射太阳辐射和外部空气温度之间相互作用的背景下，通过一天的昼夜循环利用其整体潜热容量。使用在室外气候测试期间进行的实验测量进行了比较研究，目的是确定外墙系统的真实性能。实验结果表明，在面板背面安装选定的 PCM 对 PV 面板工作温度的影响主要是在存在高太阳辐射的中午。使用在室外气候测试期间进行的实验测量进行了比较研究，目的是确定外墙系统的真实性能。实验结果表明，在面板背面安装所选 PCM 对 PV 面板工作温度的影响主要是在存在高太阳辐射的中午。使用在室外气候测试期间进行的实验测量进行了比较研究，目的是确定外墙系统的真实性能。实验结果表明，在面板背面安装所选 PCM 对 PV 面板工作温度的影响主要是在存在高太阳辐射的中午。