Best possible tilt angle for optimal solar radiation on an inclined surface for photovoltaic and solar thermal application in Yenagoa, Nigeria

Due to the increased use of solar energy resources globally, the study of the available solar resources is essential for systems that use solar energy. This paper uses the Duffie and Beckhman method for estimating the best possible tilt angle for solar radiation using some climatic data such as declination, latitude, and clear index for photovoltaic and solar thermal systems application in the city of Yenagoa. This research was conducted with different tilt angle ranging from 15 ◦ to 65 ◦ tilt and it was shown that the best tilt angle for solar energy system application for Yenagoa falls in the range of 15◦ to 45◦ tilt.