A new concept of bifacial PV/PCM (BIF-PV/PCM) system with sandwiched thermal energy storage enclosure has been investigated that possesses 1.21 times power output density and 7.39 times total energy utilization density per unit land area compared to the conventional PV system. Based on the melting morphology and thermo-electric performance of the initially rectangular PCM enclosure, an optimized bifurcated non-rectangular design of the enclosure is proposed to enhance the incident radiation utilization ability by 87% more than a simple one PV/PCM system. Enhanced utilization of solar radiation manifests into 105% more melting compared to conventional PV/PCM system. With the strategic mirror reflection and bypassing the solar radiation towards the rear PV panel and strategic design of PCM enclosure to aid convection-driven melting, electric power output has been increased significantly (about 77%) compared to similar conventional PV/PCM system. The study revealed that overall system efficiency could approach about 74% if suitable strategies are adopted, as demonstrated in this paper. Results are discussed in terms of energy utilization efficiency, exergy efficiency, power conversion efficiency, tracking melting front morphology, and its effect on heat transfer characteristics, etc. This investigation has been carried out with the help of an experimentally calibrated numerical model that accurately mimics the melting morphology of PCM and other heat transfer characteristics of the system. The findings of this study would help design and develop a more efficient BIF-PV/PCM system to meet exponentially increasing energy needs.

研究了一种具有夹层热能存储外壳的双面 PV/PCM（BIF-PV/PCM）系统的新概念，与传统光伏系统相比，其单位土地面积的功率输出密度是 1.21 倍，总能量利用密度是 7.39 倍。基于初始矩形 PCM 外壳的熔化形态和热电性能，提出了一种优化的分叉非矩形外壳设计，使入射辐射利用能力比简单的单一 PV/PCM 系统提高 87%。与传统的 PV/PCM 系统相比，太阳辐射利用率的提高表明熔化量增加了 105%。通过战略性的镜面反射和绕过太阳辐射朝向后光伏面板以及 PCM 外壳的战略性设计，以帮助对流驱动熔化，与类似的传统 PV/PCM 系统相比，电力输出显着增加（约 77%）。研究表明，如本文所示，如果采用合适的策略，整体系统效率可能接近 74%。结果在能量利用效率、火用效率、功率转换效率、跟踪熔融前沿形态及其对传热特性的影响等方面进行了讨论。 这项研究是在一个经过实验校准的数值模型的帮助下进行的，该模型准确地模拟了PCM 的熔化形态和系统的其他传热特性。这项研究的结果将有助于设计和开发更高效的 BIF-PV/PCM 系统，以满足呈指数增长的能源需求。