Transpired opaque Solar Collectors (TSCs) have been often used in buildings (e.g. for direct heating of the outside air) due to their efficiency. In addition, one way to improve their efficiency is to integrate Phase Change Materials (PCMs). As a result, the goal of this study is to thoroughly investigate the behavior of TSCs with integrated PCMs in comparison with TSCs without PCMs. Therefore, based on an experimental approach carried out in the laboratory, we determined the performances of two TSCs (with lobed perforations) of around 2 m² each, one of them containing approximately 15.1 kg of organic PCM (commercial paraffin RT35). The data achieved show the superiority of the TSC with PCM: the maximum overall efficiency is improved by almost 6%; the maximum heating capacity is approximately 7.7% higher and during the cooling/PCM discharge period, the average heating capacity is over 5 times higher; more than 17% supplementary energy during the 9 h of operation; the average coefficient of performance is 16.4% higher; the “useful time of operation” is over 86% longer (meaning almost 4 h more). Consequently, the prototype of TSC with PCM analyzed in this study has led to promising results. Nevertheless, future work is required to improve the configuration of the TSC with PCM in order to enhance the interaction between the air within the TSC and the PCM. Moreover, the TSC with the PCM should be tested under real operating conditions (integrated in buildings) for longer periods of time.

由于其效率，透明的不透明太阳能集热器（TSC）经常用于建筑物中（例如，用于直接加热外部空气）。另外，一种提高效率的方法是集成相变材料（PCM）。因此，本研究的目的是与没有PCM的TSC相比，彻底研究具有集成PCM的TSC的行为。因此，根据实验室中的实验方法，我们确定了大约2 m ²的两个TSC（带有裂孔）的性能每个，其中之一包含大约15.1公斤有机PCM（商业石蜡RT35）。获得的数据显示了TSC与PCM的优越性：最大总效率提高了近6％；最大加热能力提高了约7.7％，在冷却/ PCM放电期间，平均加热能力提高了5倍以上；在操作的9小时内，补充能量超过17％；平均性能系数高16.4％；“有用的操作时间”延长了86％以上（意味着延长了将近4小时）。因此，本研究中分析的带PCM的TSC原型已产生了可喜的结果。尽管如此，仍需要进一步的工作来改进带PCM的TSC的配置，以增强TSC内的空气与PCM之间的相互作用。此外，