A novel hybrid cavity solar thermal collector

The present paper proposes a new hybrid system of solar thermal collector with a cavity receiver and thermoelectric generator (TEG). The heat rejected by the thermoelectric generator is utilized to heat the water in the collector. This system consists of two concentric cylinders, thermoelectric generator, two mirrors and heat exchanger. The main concept of this system is to provide electric power and self-storage of hot water without the need for any connecting pipe or storage tank of useful hot water. A prototype is constructed and a steady-state mathematical model of the collector is presented in details to describe the system thermal behavior and has been simulated using Microsoft office and goal seek tool to find the temperature of the thermoelectric generator. The results of the present system are illustrated in figures and tables that show the effect of (wind speed, mass flow rate on fluid, solar intensity radiation and thermo electric generator type) on the system performance.