An experimental study of a new Solar Air Heater with a Linear Fresnel Reflector

In this experimental study two solar technologies concentration and the flat plate collector were combined in one solar air heater with a Linear Fresnel Reflector (SAHLFR). A rectangular useful duct with 2.32 [m] length and 0.2 [m] width is equipped with and without artificial roughness. This roughness has wrought of steel galvanized 0.4 [mm] thickness to create a turbulent flow of air and ensure a good heat transfer. An experimental study have started to improve the SAHLFR collector efficiency especially for the drying and heating process. The measured parameters were the ambient, inlet and outlet temperatures, the absorber plate temperatures, and the solar radiation. All this measured have performed at different values of mass flow rate of air. The results show that we can go to a higher outlet temperature of air about 150 °C.