Energy exergy and environmental analyses of mango leather drying in greenhouse solar dryer with evacuated tube collector and finned tray

This research evaluates the performance of a hybrid greenhouse solar dryer (HGSD) combined with an evacuated tube collector (ETC) for drying mango pulp. The experiments were conducted in June 2021 using a finned aluminium tray placed inside the drying chamber. The system demonstrated significant environmental advantages, including the mitigation of approximately 86. 21 tons of CO2 emissions. The average exergy efficiency was 4. 62%, with a corresponding sustainability index of 1. 048. The energy payback period was calculated as 3. 98 years, and the carbon credit earned 817. 31. The findings highlight the system's potential for optimisation to improve efficiency and sustainability.