Determination of Solar Collector Optimum Tilt Angle for Ankara and Districts

• Main Authors: Abdülkadir KOÇER, Seyfi ŞEVİK, Afşin GÜNGÖR
• Format: Article
• Language: English
• Published: Bursa Uludag University 2016-04-01
• Series: Uludağ University Journal of The Faculty of Engineering
• Subjects: Solar collector, PV panel, optimum tilt angle, solar radiation, efficiency, Ankara.
• Online Access: http://mmfdergi.uludag.edu.tr/article/view/5000107035

This study that is Ankara province and districts based deals with the determination of the optimum tilt angle to maximize the performances of solar collector and solar panel. In Ankara, fixed solar collectors are usually placed at slope of 40°. In this study, annual optimum tilt angle for Ankara province and districts was calculated as 34°±1 however the optimum angles during the year were calculated between 1° and 67°. The results of this study are compared with similar studies in the literature they were found to be consistent with the results of similar studies. Also, the tilt angle was calculated for the six months periods as 15° and 56°, for seasonal periods (winter, spring, summer, autumn) as 62°, 23°, 6° and 49°, respectively and solar radiation for optimum angles of inclination were found. When the tilt angle is changed only twice a year, due to increasing the amount of energy per unit area, according to the annual tilt angle fixed product they provides energy efficiency by about 5%. On the other hand, when the tilt angle is changed every month this ratio can be reached approximately 8%. For increasing the utilization efficiency of solar collectors and panels, it is recommended adjusting of the tilt angle once a month or at least twice a year.