Measurement of slope error of a solar dish facet substrate with the ‎optical scanning method and its impact on the light concentration

Solar collectors are necessary optical devices for converting solar irradiation into heat. Their characteristics prior to construction. The construction error and the slope of surface mirror facet a parabolic collector have been measured by scanning method. material layer is reinforced fiberglass, which designed made molding method its approximate area 0.8 square meters. In method, structured light mechanism off-axis imaging used. addition location each point, depth that point cloud obtained from points part. By fitting procedure with focal length 3,000 millimeters (specified in design file part), vertical deviation measuring (actual) on part (nominal) was determined. Root Mean Square geometric difference constructed compared approximately 1.2 mm. effect calculated terms normal vector angular ideal amount ±15.7 mrad deviations this procedure. scan inserted Zemax software environment intensity pattern fiberglass simulated Monte Carlo Next, thin stuck substrate. temperature profile concentrated an iron plate receiver thermal camera maximum 140 ° C recorded.