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Solar Dehydrator Designs

 
Posts: 96
Location: Zone 7a
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I am thinking about building a solar dehydrator this year. I see a couple ways to build one. One way is to have the top of the solar collector roughly at the top of the cabinet. Then the heated air travels down to the bottom of the cabinet, then up through and out. Another way is to have the top of the solar collector roughly at the bottom of the cabinet, then up and out.
Constructing the first way has a benefit of the cabinet at a convenient height. Is there any loss in having the heated air having to travel down first? Any trouble getting the draw to start?
I have a place at a retaining wall where I *could* have the solar collector at a lower elevation, and cabinet at a higher elevation, all facing south. However, now it's stuck in one place.
Am I overthinking it?
Any wisdom to share?
 
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Hi, Kevin

I can't answer your question so I thought you might find them in one of these threads:

https://permies.com/t/71002/kitchen/built-Walk-Radiant-Solar-Dehydrator

https://permies.com/t/136478/solar-dehydrator-build

https://permies.com/t/76018/kitchen/math-solar-dehydrators
 
Kevin Harbin
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Thank you. These threads were helpful. The right answer for me might be to take advantage of my hot attic.

The problem is the solution.
 
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