A PV/T system faces the difficulty of high-temperature dissipation as a result of low heat-exchange efficiency and winter freezing challenges that badly influence the performance of the system and even damage the PV/T. These problems can be addressed by using of the PCM in a PV/T system. The PCM can absorb heat in the daytime to reduce the operating temperature of the PV cell, and release heat at night to prevent the system from freezing in winter. In this study, a PV/T with PCM was designed and constructed by the authors. A series of experiments were done to compare the performance of the PV/T with PCM with a normal water-pipe-based PV/T during the daytime and night respectively. Physical-mathematical models were developed to simulate the transient performance of the PV/T with PCM. The data was analyzed, compared and validated with the experimental results. The results for the daily electrical efficiencies of the PV/T with PCM and water-pipe-based PV/T are 12.1% and 11.9% respectively, while the thermal efficiencies of two systems are 42.3% and 44.5% respectively. Also, the temperature of the PV/T with PCM is obviously higher at night in winter. This shows that PCM can improve the performance of a PV/T system. The results reveal good agreements between model simulation and experimental measurement with sufficient confidence. The design parameter analysis shows that the PV/T with single melting-temperature PCM panels can hardly meet the two requirements which are cooling the collector during daytime and preventing it from freezing at night. The study also reveals that increasing the thickness of the PCM can improve the collector’s antifreeze function.

由于热交换效率低和冬季严寒的挑战，PV / T系统面临高温耗散的困难，这严重影响了系统的性能，甚至损坏了PV / T。这些问题可以通过在PV / T系统中使用PCM来解决。PCM可以在白天吸收热量以降低PV电池的工作温度，并在晚上释放热量以防止系统在冬天结冰。在这项研究中，作者设计和构造了带有PCM的PV / T。进行了一系列实验，分别比较了白天和黑夜将带有PCM的PV / T与普通的基于水管的PV / T的性能进行了比较。开发了物理数学模型来模拟具有PCM的PV / T的瞬态性能。数据进行了分析，与实验结果进行比较和验证。PCM和基于水管的PV / T的PV / T的每日电效率结果分别为12.1％和11.9％，而两个系统的热效率分别为42.3％和44.5％。此外，冬季晚上，带有PCM的PV / T的温度明显更高。这表明PCM可以提高PV / T系统的性能。结果表明，模型仿真与实验测量之间具有良好的一致性，具有足够的信心。设计参数分析表明，具有单个熔化温度PCM面板的PV / T几乎不能满足两项要求：白天对收集器进行冷却，并防止其在夜间冻结。