Theoretical and Experimental Study of Thermal Performance of Flat Plate Air Heating Collector

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Author(s) K. Agbossou | F. A. Tetang | T. E. Boroze | K. Nwuitcha | K. Napo | B. Zeghmati
Pages 473-490
Volume 5
Issue 10
Date October, 2016
Keywords Solar Energy, Heat Transfer, Forced Convection, Solar Air Collector, Modeling, Solar Drying

This work presents the survey of the behavior of the constituent of a solar insulator submitted to a natural sunshine in forced convection. A model based on equations of the thermal balances has been established while using the nodal method. Its validation is achieved from the comparison of the theoretical and experimental results. It describes the perfect agreement between the two results. A mathematical model was developed to predict the effect of variation in the input parameters on the collector thermal efficiency. The theoretical results showed that the thermal performance of the collector was sensitive to solar irradiation, ambient temperature, air flow rate, and slat length. The experimental results were in good agreement with the theoretical values. Collector efficiency as high as 62% could be obtained. The results showed that optimal air flow mass (working fluid) ranged from 0.015 to 0.040 kg/s. And the optimum air speed inside the collector was found to be 1.5 to 6 m/s. The measured parameters allowed us to appreciate the theoretical analyses and to valorize our solar air flat-plate for it possible used in solar drier system for agricultural produce drying in Togo.

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