Design of an injera baking system using parabolic trough solar collectors at Mekelle University cafeteria.

Injera baking poses a significant energy demand and strain on the national grid, requiring temperatures of 180-220 °C with traditional clay Mitads. This study aimed to design a solar thermal system to replace electrical baking energy at the Mekelle University student cafeteria. The system, designed for baking 11,000 Injera within a 6-h daily operation, comprises 92 Anodized aluminum plate Mitads heated by hot oil from an oil gallery, stored in a hot oil storage unit, and recharged via a parabolic trough solar collector.