Integrating photovoltaic PV with curved architecture boosts renewable energy use and reduces carbon emissions in building applications. This paper proposes a curved PV ventilated facade assisted heat pump system (CPVF-HP), utilizing curved PV ventilation facade as carrier for the application of PV in curved buildings, and enhancing overall energy efficiency through synergistic operation with heat pumps. In the cooling mode, the system employs the heat pump evaporator to pre-cool the air entering the curved PV ventilated facade, thereby reducing the temperature of the PV cells and the air conditioning load of the building. In the heating mode, the CPVF-HP system preheats the air entering the heat pump evaporator using the curved PV ventilated facade, elevating the evaporation temperature of the heat pump. The experimental setup of CPVF-HP is established, and the dynamic performance of the CPVF under various ventilation conditions and its synergistic operational performance with the heat pump have been investigated. The results indicate that CPVF displays considerable difference in irradiance and temperature across its east–west orientation, especially noticeable during morning and afternoon hours, affecting the system's electrical performance. Notably, isotropic scattered radiation improves radiation uniformity and the electrical efficiency of CPVF. The system achieves a notable average electrical efficiency increase of 69.90% on cloudy days compared to sunny conditions. CPVF-HP system effectively manages temperatures by precooling or preheating the air, enhancing the electrical efficiency by 34.43% in cooling mode, and increasing COP by 5.23% in heating mode compared to an independent heat pump operation. The CPVF-HP system demonstrates a synergistic improvement in both thermal and electrical performance, offering an innovative approach to optimizing energy efficiency in curved PV integrated buildings.

中文翻译：

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曲面光伏通风立面辅助热泵系统（CPVF-HP）概念设计及初步实验研究

将光伏发电与弧形建筑相结合可促进可再生能源的使用并减少建筑应用中的碳排放。本文提出了一种曲面光伏通风立面辅助热泵系统（CPVF-HP），以曲面光伏通风立面为载体，实现光伏在曲面建筑中的应用，通过与热泵的协同运行，提高整体能源效率。在制冷模式下，系统利用热泵蒸发器对进入弧形光伏通风立面的空气进行预冷却，从而降低光伏电池的温度和建筑物的空调负荷。在制热模式下，CPVF-HP系统利用弧形光伏通风立面对进入热泵蒸发器的空气进行预热，提高热泵的蒸发温度。建立了CPVF-HP实验装置，研究了CPVF在不同通风条件下的动态性能及其与热泵的协同运行性能。结果表明，CPVF 在其东西方向上表现出相当大的辐照度和温度差异，特别是在上午和下午时段，影响了系统的电气性能。值得注意的是，各向同性散射辐射提高了 CPVF 的辐射均匀性和电效率。与晴天相比，该系统在阴天平均电效率显着提高 69.90%。 CPVF-HP系统通过预冷或预热空气来有效管理温度，与独立热泵运行相比，制冷模式下电效率提高34.43%，制热模式下COP提高5.23%。 CPVF-HP 系统展示了热性能和电性能的协同改进，为优化曲面光伏集成建筑的能源效率提供了一种创新方法。