Analysis of Evacuated Tube Consisting Parabolic Concentrator with Al2O3-Water Nanofluid

Efficiency enhancement has always been a challenge for scientists and researchers. Although the realization of proposed concepts is necessary for development, it consists of several challenges from fabrication to testing the concept. The present study carried out experiments on parabolic trough collectors with the bare tube and evacuated tube receivers. Further, the performance has been tested for water and Al2O3-water as nanofluid. The parabolic trough and experimental setup were fabricated to carry out experiments outdoors for the daily solar flux and varying flow rates of the working fluid. The nanofluid with an evacuated receiver tube continuously shows better performance over the range of flow rates investigated in this study.