Abstract This paper aims to present a numerical study that aims to enhance the thermal efficiency of externally finned solar absorber tubes for use in the solar parabolic trough collector (SPTC). Compared to the internal finned tube, the external finned radiation absorber tube boasts an improved geometry and a simple and straightforward manufacturing process. This … Continue reading Published at Applied Thermal Engineering – Optimizing the configuration of external fins of solar receiver tubes for the solar parabolic trough collector