Investigation of variations in collection efficiency of photovoltaic panels

This thesis reviews recent progress in solar cell research and development.Moreover it also explains the concepts and engineering related with solar electricalgenerators or the photovoltaics cells and panels. And also it is investigated that theperformance of a photovoltaic (PV) panel is affected by its orientation and its tiltangle. This is because both of these parameters change the amount of solar energyreceived by the surface of the PV panel. A mathematical model was used to estimatethe total solar radiation on the tilted PV surface, and to determine optimum tilt anglesfor PV panels installed in Gaziantep, Adiyaman, Diyarbakir, Mardin, Siirt andSanliurfa. This study determined that the monthly optimum tilt angle for a PV panelchanges throughout the year with its minimum value as 120 in June and maximumvalue as 600 in December.iii