- The study compares drying Krishna tulsi leaves using an in-house solar dryer with open sun drying, revealing that the solar dryer takes 8 hours versus 22 hours for sun drying to achieve a similar moisture content.
- The efficiency of the solar collector and dryer ranges from 42 to 75% and 0-18%, respectively, with the overall drying process suffering an exergetic loss of 0-40%.
- The solar dryer is projected to reduce CO emissions by 13.2 tonnes over its 20-year lifespan, with carbon credits worth up to 43,576 INR and a payback period of only 0.4 years.