This project presents the design, construction, and testing of a concentrated solar thermoelectric generation system intended to convert thermal energy into usable electrical power. A large Fresnel lens was used to focus solar energy onto a black-coated aluminum receiver plate connected to thermoelectric generator (TEG) modules. A passive water-fed cooling system utilizing PVA/cellulose wicking material maintained a temperature difference across the modules to improve electrical output. The project evaluated multiple TEG array configurations, thermal performance, and electrical output under outdoor solar conditions. System testing included monitoring hot-side and cold-side temperatures, voltage, current, and power generation while comparing different electrical layouts and load conditions. The system successfully achieved receiver plate temperatures above 150°C and temperature differentials greater than 50°C across the TEG modules. Results demonstrated measurable electrical power generation, with a maximum combined output of 0.983 W and a peak voltage output of 3.02 V. Although overall efficiency remained lower than conventional photovoltaic systems, the project demonstrated the feasibility of concentrated solar thermoelectric power generation and highlighted the importance of thermal management and load matching in low-power TEG systems.
