| Abstrakt: |
Addressing the imperative need for advancements in thermoelectric generation, this study pioneers an analysis of nanofluid-cooled solar segmented thermoelectric generators with non-uniform cross-sections. Insights into thermal management, structural integrity, and economic efficiency in thermoelectric systems are provided, employing a numerical model that accurately represents thermoelectric effects by accounting for temperature dependencies of semiconductor materials. Through research, exploration of diverse coolant strategies, including TiO 2 , Fe 3 O 4 , Al 2 O 3 , and graphene, offers key insights into their impact on cooling dynamics. Findings demonstrate that graphene nanofluid, operating at a flow velocity of 2 m/s, outperforms others, achieving optimal power generation of 221.77 mW and an exergy efficiency of 8.99 %. Additionally, at a concentrated irradiance of 595 kWm−2, graphene leads in environmental benefits, with the highest CO 2 savings of 0.38 kgyr−1, and demonstrates economic advantages with a cost-effective dollar per mW value of 3.79×10−6 $mW−1. Furthermore, the study verifies the structural integrity of these systems, with graphene achieving an optimal von Mises stress of 1.35 GPa at a semiconductor height of 0.2 mm. These advancements contribute to environmentally friendly and high-performance generators for sustainable energy solutions, paving the way for future innovations in thermoelectric technology. • Graphene nanofluid yields 221.77 mW power and 8.99 % exergy efficiency at 2 m/s. • At 595 kWm−2, graphene saves highest CO 2 of 0.38 kgyr−1. • Optimal von Mises stress of 1.35 GPa at 0.2 mm leg height • Minimized cost of electric power is 3.79×10−6 $mW−1. • Non-uniform TEGs assessed for sustainable, efficient energy practices. [ABSTRACT FROM AUTHOR] |
