Enhancing the performance of water-based PVT collectors with nano-PCM and twisted absorber tubes

The study investigated the thermal performance of a photovoltaic (PVT) collector with twisted absorber tube and nanoparticle-enhanced phase change material (nano-PCM). PVT consisted tubes, container filled nano-PCM, (PV) panel. To assess its efficiency, five different configurations were tested using an indoor solar simulator. analyzed as follows: (a) unenhanced PV panel, (b) circular tubes (C-PVT), (c) (T-PVT), (d) C-PVT nano-PCM (C-PVT-PCM), (e) T-PVT (T-PVT-PCM). thermal, photovoltaic, combined photovoltaic-thermal efficiencies evaluated at varying mass flow rates (0.008-0.04kg/s) constant irradiance 800W/m2. Among tested, T-PVT-PCM configuration demonstrated highest performance. Specifically, rate 0.04kg/s, 800W/m2, ambient temperature 27°C, it achieved 9.46%, 79.40%, 88.86%, respectively. utilization in design notably improved efficiency by enhancing heat transmission between liquid surface. Furthermore, implementation led to significant reduction surface temperature. Compared lowered approximately 30°C, when compared C-PVT-PCM, reduced around 10°C. Notably, outperformed panel exhibiting 34.5% higher efficiency. Overall, highlights material. innovative remarkable temperatures, significantly enhanced traditional configurations. These findings contribute development more efficient versatile energy systems potential for broader applications renewable technology.