And here I am back again. My solar dehydrator is falling apart. The Tropics are just too brutal, and we are just too poor; I think we cut too many corners to save money and the materials we used are disintegrating under the tropical sun and rain. So, I'll keep it short and sweet. First of all, we have a better internet connection, so I'll upload pictures of our current model at last. I've been looking for solar dehydrators for the Tropics or for humid climates, and all I find is very disappointing, such as dehydrators where the solar collector and the drying chamber are the same, with the fruit drying in direct light (no, thanks), or they have a huge solar collector and the drying chamber is as big as a dog house. I need something close to my current model, if not bigger, as I'll be having more and more bananas and pineapples (drought permitting). Right now I have 8 stacked 2'x3' trays. I looked into drying tunnels, but they take a lot of space. I wouldn't mind a walk-in model. As you can see from the pictures, I went with the top-draft model, the third in Paul Wheaton's video. I even corresponded with the guy in the video, who pretty much cut me short after too many questions and after giving me the design. I never got the darn top draft, so I got a top fan pointing down. During the rainy season, or even before the rains, the air is so moist I have to use a propane burner on the lowest setting to keep stuff from rotting. I don't know how people in North America can forget their prunes in there from the year before. Doesn't it rain there, too?
So, here I am, begging again for pointers, insights and help. I love permies.com, but it seems to be mostly North-America-centered (but please do prove me wrong!), and Geoff Lawton's forum may take days before I get an answer. Still, they are both great resources that can save a lot of time and help lots of people. Thanks, and keep it up!