Improving Thermal Efficiency of Solar Air Collector by Creating Turbulent Flow Using New Baffles Combinations

The study shows an experimental investigation for a solar air collector with single pass by adding rectangular baffles different positions inside the channel. aim of this is to improve thermal efficiency collector, and that through testing four cases (mode 1, 2, 3, 4). was done under operating conditions changing mass flow rates baffles. results show effectiveness in improving also proved affect efficiency, where greatest recorded fourth mode then positioning obstacles at middle channel 2 4 percentage 76.61? 90.9?, rate m=0.0522 kg/s, while pressure drop very high 4, after 2. Through taking into account all results; we can say best case