Enhanced Heat Transfer Performance in a PTSC Absorber with a Circular Geometry Insert
摘要
A parametric investigation is carried out in this study to enhance the heat transfer within the absorber tube of a parabolic trough solar collector (PTSC). This method employs a circular insert attached to the absorber within the PTSC's tubular absorber to enhance turbulence and increase the fluid contact surface area, thereby improving heat transfer. Thermal analysis employed the finite volume method, integrating local solar flux data from ray-tracing simulations. A comparative study of conventional and modified receivers across Reynolds numbers from 10,000 to 60,000 revealed a notable improvement in collector efficiency, with inserts increasing it by up to 0.76%.