PERFORMANCE ANALYSIS OF A DUAL-FLUID CPVT SOLAR CONCENTRATOR (Water and Air)

Energetic

This study proposes an innovative approach combining a dual-fluid (water and air) photovoltaic-thermal sensor and a solar concentrator (dual-fluid CPVT), with the aim of evaluating their respective efficiencies and optimizing solar energy conversion. This cogeneration system ensures the simultaneous production of electricity and heat with enhanced efficiency, adapted to the climatic conditions of Mahajanga. A one-dimensional transient numerical model was developed and simulated using MATLAB with the Runge-Kutta method, providing an accurate assessment of the system's performance. A program was designed to evaluate the electrical and thermal performance of the hybrid dual-fluid CPVT collector, whose reliability was verified by comparison with experimental data from the literature. The integration of the solar concentrator, fins attached to the upper absorber around the parallel tubes, as well as the simultaneous use of two heat transfer fluids, significantly contributes to the improvement of heat transfer, thereby increasing the overall efficiency of the system. The results obtained highlight the strong potential of this configuration, capable of simultaneously optimizing electrical and thermal yields. This study, based on rigorous modeling and advanced simulations, makes a significant contribution to the improvement of hybrid photovoltaic-thermal systems.

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