This research presents an experimental study of parabolic through solar collector with ducts. In this research four case studies are considered, there are different geometry of ducts with hydraulic diameter (CS1), various velocities of heat transfer fluid with circular duct (CS2), different surface emissivity (CS3) and various hydraulic diameter with circular duct (CS4). The experimental study involves the design, fabrication and construction of a suitable parabolic through solar collector with ducts.