The main objective of the current work is to study the drying behaviour of herbs and to determine the techno-economic analysis of a developed solar dryer. For this purpose, the herbs like amaranthus, mint, and moringa are selected for this study. The initial moisture of amaranthus (88% w.b), mint (90% w.b), and moringa leaves (80% w.b) was reduced to a final desired moisture content of 7.3, 9, and 4% (w.b), respectively. 15 kg products were...