Yilmaz, SabanOzcalik, Hasan RizaDincer, Furkan2024-09-182024-09-1820151941-7012https://doi.org/10.1063/1.4919085https://hdl.handle.net/20.500.12483/13363Photovoltaic (PV) panels absorb solar energy most when solar radiation perpendicularly reaches on upon surface. This leads to the notion of optimal roof angle. Optical and geometrical properties of the panels are of vital importance in order to obtain maximum energy from the Sun. Therefore, this study focuses on the horizontal roof angle which has a crucial impact on the performance of PV panels. Total solar radiation, optimal roof angle and effects of different angles on PV panels in Kahramanmaras province of Turkey on different days are numerically and experimentally analyzed and discussed. Additionally, roof angle influences the amount of solar radiation reaching on the surface and varies depending on the geographic location and seasons. 7.9% more energy can be generated in the proposed systems where roof angle can be daily adjusted. This greatly influences the amount of solar energy when optimal roof angles are calculated annually depending on the seasons in a region. However, it is quite costly and challenging to adjust the roof angle as far as a building is concerned. (C) 2015 AIP Publishing LLC.eninfo:eu-repo/semantics/openAccessOptimum Tilt AngleOptical-PerformanceSystem InstallationSolar CollectorsSun TrackingPowerPvDesignSingleOutputArticle7210.1063/1.49190852-s2.0-84928494353Q2WOS:000353834300033Q3