Thermal Analysis of Solar Air Heater in Natural Convection

The study of natural convective heat transfer from horizontal rectangular solar air heater has been studied experimentally. It was found that due to green house effect air gets heated and resulting in the lower in density cause air to rise and flow. This also makes fresh air to come in and thus repetition in the procedure. Several parameters like Nusselt number, Rayleigh Number, Heat transfer rate, and temperature difference was calculated and found in good agreement with the results obtained by several correlations available in the literature.