Simulation of photovoltaic thermal solar system with new technique for improving electrical performance

Performance of the new design of solar-harvesting system was inspected numerically in current work. The goal of applied techniques is utilizing the portion of waste heat. To fabricate the proposed system, TEG layer was combined with PV and square cooling ducts have been attached in the bottom of the unit. The base cooling fluid (water) has been mixed with hexagonal boron Nitride (hBN) nanoparticles. Also, the duct has been equipped with wavy tape to enhance the mixing rate. Effects of installing turbulator for different levels of solar irradiation (G = 750 and 850 W m-2), wind speed (Vwind = 0.5 to 2 m s-1), inlet speed (Vin = 0.05, 0.1 m s-1) and fraction of hBN (phi = 0, 0.026) have been analyzed and amounts of thermal (eta th) and electrical (eta el) performances have been reported. Increasing fraction of hBN makes eta el enhance and increment enhances about 2.81 times if turbulator has been utilized. In the presence of wavy tapes, increasing G causes eta th to enhance about 4.08% while increasing Vwind causes eta th to reduce around 4.7%. The values of eta th and eta th improve about 12.2 and 1.22% with installing wavy tape. The amount of eta th enhances with augment of Vin and its effect is more sensible for smooth duct.