Abstract :
Azimuth-elevation and tilt-roll tracking mechanism are among the most commonly used sun-tracking methods for aiming the solar
collector towards the sun at all times. It has been many decades that each of these two sun-tracking methods has its own specific suntracking
formula and they are not interrelated. In this paper, the most general form of sun-tracking formula that embraces all the possible
on-axis tracking methods is presented. The general sun-tracking formula not only can provide a general mathematical solution, but
more significantly it can improve the sun-tracking accuracy by tackling the installation error of the solar collector.
2008 Published by Elsevier Ltd.
