Abstract
Basing on the provided information in the first to four chapters where it was clearly demonstrated that, the maximum utilization of solar energy depends upon determining the exact location of the sun position. By proper calculation and computer programs, the solar path for any geographical location can be tracked. Thus, a clear idea about the prospects of solar energy for any location can be obtained and accordingly decisions and, measures can be adopted for harnessing solar energy in that area. Basing on this information a general formula for on-axis sun-tracking system has been derived using coordinate transformation method. The derived sun-tracking formula is the most general form of mathematical solution for various kinds of arbitrarily oriented on-axis sun tracker, where azimuth-elevation and tilt-roll tracking formulas are specific cases. The application of the general formula is to improve the sun tracking accuracy because the misalignment of solar collector from an ideal azimuth-elevation or tilt-roll tracking during the installation can be corrected by a straightforward application of the general formula. Moreover, the rotation angle in a single axis tracker is calculated. The calculated rotation angle can be used to determine the number of motor revolutions to move the tracker to its optimum position.