This paper analyses the integration of air open-loop photovoltaic thermal systems on the façade of high-rise buildings, with a special focus on their active and passive effects. The system energy performance and its impact on the building heating and cooling demands and electrical production are assessed through a new dynamic simulation model. The developed numerical model of the proposed system, based on a detailed transient finite difference thermal network, is verified by comparing its outcomes to experimental results. With the aim to carry out whole building energy performance analyses, the model is implemented in a dynamic simulation tool for the building energy performance assessment, called DETECt 2.3, and suitably modified to analyse the main building integration energy issues.

To assess the potentiality of the numerical model and the feasibility of the investigated system, a comprehensive case study relative to a multi-floor high rise office building located in several European climate zones is developed. A comparative and parametric analysis is also carried out with the aim to evaluate the system active and passive effects as a function of the building height. Simulation results show that by using building integrated air open-loop photovoltaic thermal systems, an interesting percentage reduction of the heating demand can be obtained. Both passive and active effects contribute to the variation of the thermal and electrical efficiencies. For the investigated weather zones, the innovative system leads to a reduction of the final energy consumptions ranging from 56.8 to 104.4%, approaching the nearly or net positive zero energy building target in the southern climate. Finally, the proposed analysis also aims to show the main implications linked to the design of the system, to be carefully taken into consideration by designers and stakeholders in case of new buildings or renovations.

本文分析了高层建筑立面上的空气开环光伏热力系统的集成，特别关注了它们的主动和被动效果。通过新的动态仿真模型评估了系统的能源性能及其对建筑物供暖和制冷需求以及电力生产的影响。通过将其结果与实验结果进行比较，验证了所提出系统基于详细的瞬态有限差分热网络的已开发数值模型。为了进行整个建筑的能源性能分析，该模型在用于建筑能源性能评估的动态仿真工具DETECt 2.3中实现，并进行了适当的修改以分析主要的建筑集成能源问题。

为了评估数值模型的潜力和所研究系统的可行性，针对位于多个欧洲气候区的多层高层办公楼，进行了全面的案例研究。还进行了比较和参数分析，目的是根据建筑物高度评估系统的主动和被动效果。仿真结果表明，通过使用建筑物集成的空气开环光伏热系统，可以获得令人感兴趣的供热百分比降低。被动效应和主动效应都有助于热效率和电效率的变化。对于所调查的天气区域，创新的系统可将最终能耗降低56.8％至104.4％，接近南部气候中接近或净为零的正能量构建目标。最后，提出的分析还旨在显示与系统设计相关的主要含义，在新建或翻新的情况下，设计师和利益相关者应仔细考虑这些影响。