High cost of active solar dryers - Low & medium temperature solar thermal Challenges - CLIMAX
Active solar dryers with a fan for hot air circulation can provide better performance and shorter durations for drying, but these dryers come at a higher cost and use electricity which increases their overall carbon footprint.
Lack of awareness of solar thermal applications
Competition from low natural gas prices
Ineffective policies and incentives
No significant cost decreases for solar thermal systems
Competition from heat pumps
Low throughput and long drying times of solar dryers
High cost of active solar dryers
Performance challenges with solar cookers
Timing challenge with solar cookers