Design of the double pass solar collector for drying

Abstract Solar energy is the free and nearly endless source which can be applied in various fields. Viet Nam locates near equation has enormous solar radiation, so this good chance for us to harness it. Moreover, also agricultural country with large number of export product. With advantage having we save up amount drying other applications. In paper, 2 double pass collectors have fins without were designed simulated by CFD Ansys some different conditions. The result displays that same size, outlet temperature times higher than one. This reach 94.6°C radiation 1026.32W/m2, mass flow rate 0.12kg/s 68.63°C 0.18kg/s, it eligible drying.