Akademik Veri Yönetim Sistemi
Solar Energy, cilt.312, 2026 (SCI-Expanded, Scopus)
This study examines the influence of roof profiles and the spacing between roofs and photovoltaic (PV) modules on the thermal behavior and electrical efficiency of PV panels under varying cooling fluid velocities and solar irradiance levels. An experimental setup was constructed by mounting a monocrystalline PV module on a corrugated roof profile, and a corresponding CFD model was developed in COMSOL Multiphysics under controlled irradiance and airflow conditions. Experimental results show that the power output decreases by approximately 0.82 W for every 1 °C increase in PV surface temperature. Numerical results indicate that a 0.2 m/s increase in airflow velocity leads to a 0.92 °C reduction in surface temperature and a 0.4% increase in electrical efficiency. For each 100 W/m2 increase in irradiance within the 500–1200 W/m2 range, the PV surface temperature rose by 2.84 °C, accompanied by a 0.14% drop in efficiency. Various roof configurations were investigated, including flat, corrugated, trapezoidal, and two novel designs (Model A and Model B). Reducing the panel-roof spacing from 0.23 m to 0.05 m enhanced convective heat transfer. Model A and Model B reduced PV temperatures by up to 8.28 °C and 11.56 °C, respectively, compared to the flat roof, resulting in efficiency improvements of 0.42% and 0.59%. Furthermore, increasing the pitch height (H) of the roof profiles lowered surface temperature and improved efficiency across all designs, whereas variations in pitch width (W) showed negligible effects within the tested range.