Experimental Analysis Performance Enhancement of Double Pass Solar Air Dryer Using Triangular Shape

This study focuses on the design and performance evaluation of a triangular shape double pass solar air dryer. The triangular shape configuration promotes uniform airflow distribution, which enhances convective heat transfer and increases the overall thermal efficiency of the system. Experimental investigations were carried out under real climatic conditions to examine the temperature rise, heat absorption characteristics, and energy utilization of the dryer. The results indicate that the triangular shape design significantly improves air?plate interaction, leading to higher outlet air temperatures and enhanced drying performance when compared to conventional flat or rectangular configurations. Furthermore, the double pass airflow arrangement increases air residence time within the drying chamber, resulting in improved heat extraction from the absorber surface and reduced thermal losses. Overall, the proposed triangular shape double pass solar air dryer demonstrates reliable, energy-efficient, and environmentally sustainable performance, making it a promising solution for solar-assisted agricultural and industrial drying application.