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Design and analysis of a BIPV/T system with two applications controlled by an air handling unit

机译：BIPV / T系统的设计和分析，其中两个应用程序由空气处理单元控制

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A building integrated photovoltaic thermal (BIPV/T) system was designed and analyzed. The BIPV/T system is composed of multiple PV/T air collectors integrated into the building facade and connected to an air handling unit (AHU) to control the air flow. The system operates with two applications, an application for cold weather and an other for hot weather. In cold weather, the BIPV/T system recovers heat from the PV modules to preheat the outdoor fresh air. While in hot weather, the cool air exhausted from the conditioned spaces of the building is used to decrease the PV cells temperature, instead of ambient air as in conventional PV/T air collectors. An experimental tests were conducted to see the effect of using the cool exhaust air as coolant for the PV cells instead of ambient air. In order to predict thermal and electrical performance of each PV/T air collector under real climatic conditions, a theoretical model of a single pass PV/T air collector was developed and validated against experimental observations from previous literature. The theoretical and experimental comparison between the case of using exhaust air as coolant and the case of using ambient air as coolant showed an important decrease in PV cells temperature. The maximum decrease value in PV cells temperature obtained from the simulation is 9.46 degrees C in a selected day from August, while the electrical simulation showed that the average increase value in electrical efficiency in a selected day from August is 0.350. The simulation of the BIPV/T system in cold weather indicated that the average rate of saved useful thermal energy when using preheated outdoor fresh air in a selected day from February is 24.20%. Furthermore, the PV/T air collector performances were compared for the optimal tilt angle and the complete vertical position. The results revealed that installing the PV/T air collector at optimal tilt angle showed much better performances than a one installed at a complete vertical position, especially the electrical performance in Summer.
机译：设计并分析了建筑一体化光伏热（BIPV / T）系统。 BIPV / T系统由集成到建筑物外墙中的多个PV / T空气收集器组成，并连接到空气处理单元（AHU）以控制空气流量。该系统有两个应用程序，一个用于寒冷天气，另一个用于炎热天气。在寒冷的天气中，BIPV / T系统从光伏模块中回收热量，以预热室外新鲜空气。在炎热的天气中，从建筑物的空调空间排出的冷空气用来降低PV电池的温度，而不是像传统的PV / T空气收集器那样降低环境空气。进行了实验测试，以了解使用冷废气作为PV电池的冷却剂代替周围空气的效果。为了预测每个PV / T空气收集器在真实气候条件下的热和电性能，开发了单程PV / T空气收集器的理论模型，并根据先前文献的实验观察进行了验证。在使用排气作为冷却剂的情况与使用环境空气作为冷却剂的情况之间的理论和实验比较表明，PV电池温度显着降低。从模拟获得的PV电池温度的最大下降值在从8月开始的选定日期中为9.46摄氏度，而电气模拟显示，从8月开始的选定日期中，电气效率的平均增加值为0.350。 BIPV / T系统在寒冷天气中的模拟表明，从2月开始的选定日期中，使用预热的室外新鲜空气时，平均有用热能节省率为24.20％。此外，比较了PV / T空气收集器在最佳倾斜角度和整个垂直位置上的性能。结果表明，以最佳倾斜角度安装PV / T空气收集器的性能要比垂直安装在完全垂直位置的集热器好得多，尤其是夏季的电气性能。

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