@James_Dontje1 Has been trialing passive (non-electric) drier designs in a very humid area of Tanzania for a while and documenting his questions and successes on this website: ECHO East Africa Solar Food Dryer Resources
He shared some information in a recent EDN article here, but most of the specific content you can find on the website above. James asked a question to the network about a recent design here: Your ideas for improving direct solar dryer performance - Appropriate Technology / Food Processing and Preservation - ECHOcommunity: Conversations
Has anyone else found designs that have worked well in humid contexts?