IMPACT OF PARTIAL SHADING GEOMETRY ON THE ENERGY AND EXERGY PERFORMANCE OF PV MODULES

In this experimental study, the impact of the geometric shape of partial shading on the energy and exergy performance of photovoltaic (PV) modules was evaluated using quadrant, triangular, and rectangular shaped shaders located on PV₁, PV₂, and PV₃ modules. The change in power output as well as the first and second efficiency of the PV modules was examined. In addition, fluctuations in the cost of exergy destruction (COEx) and the sustainability index (SI) were also observed. As a result, while the first law efficiencies of the PV₁, PV₂, and PV₃ modules were determined to be 5.33%, 6.85%, and 4.97%, respectively, the second law efficiencies were calculated as 2.06%, 3.99%, and 1.38%, respectively. The decrease rate of the first law efficiencies of the PV₁, PV₂, and PV₃ modules compared to the PV module was 6.86%, 5.34%, and 7.22%, respectively. Likewise, the decline in the second law efficiencies of the PV₁, PV₂, and PV₃ modules was 8.36%, 6.43%, and 9.04%, respectively. The COEx for them was $29.89/year, $29.34/year, and $30.11/year, respectively, while for the PV module it was $29.01/year. The SI of the PV₁, PV₂, and PV₃ modules is 8.92%, 7.14%, and 9.82% lower than that of the PV module.