Thermodynamic optimization of flat plate solar collectors

In this paper a thermodynamic optimization of flat plate solar collector is developed to determine the optimal performance. In fact the energetic and exergetic analyzes are achieved by the determination of tow efficiencies. The influence of some geometrical parameters on the performance is also studied. It is noted that the exergetic efficiency of the collector has an optimum and that the energetic efficiency cannot be increased above an upper limit which is less than 1 and the exergy content of extracted energy tends to 0. The effect of some parameters shows that those limit values depends mainly on the collector and spacing between tubes. A simulation program is used for this calculation.