Effect of a daily flat plate collector orientation change on the solar system performances

This work consist mainly in highlighting the effect of the step by step tracking system using on the performance of a solar water heating system. Using data measurement obtained from renewable energy systems development in arid region of Ghardaia characterized respectively by temperate and arid climates. The results obtained by the considered system are compared to those obtained by a fixed system with a seasonal inclination change and to those obtained by two mechanisms with a continuous tracking around a vertical axis and that around an inclined axis. In following are presented the considered system and used in this study. As results it is observed that the orientation of the solar water heater collector three times by day lead to increase its thermal efficiency and this work leads also Evaluating the flat plate solar collector optimum azimut angle for several Algerian climate.