Digital Study of The Effect of Radiation on The Flat Solar Collector

Abstract

This work deals with the numerical study of heat transfer during airflow through a flat plate air thermal solar collector. It consists of the numerical study of the environmental, structural and design parameters that directly influence the operation of this collector. Based on the heat equation, the equations of the different elements of the collector are established.  The temperatures of the glass, the absorber and the heat transfer fluid are determined, varying in time and space. The finite difference method was used for the numerical solution. The results obtained allowed us to obtain the desired heat transfer fluid temperature for solar drying of bananas. These results are confirmed by studying the effect of solar radiation on the properties of the glass. For this purpose, the study made for three types of glass (tempered glass, display glass, clear flat glass) allowed to conclude that the clear flat glass of coefficients (2% of absorption and 90% of transmission) is the best choice. The latter gave us the output temperature of the heat transfer fluid for a radiation of 700W/m².