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Notes from designing my solar dehydrator.

 
Posts: 280
Location: Philippines
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Just some quick notes as I am on the move again.

So I was reading this morning on solar driers. I have modified my sawdust fired drier to a combo or alternate. Meaning I can use solar alone or saw dust alone or use them simultaneously. I was looking for some brilliant tips to incorporate it on my project. I notice that everything you were doing about solar dehydrators SD, Is wrong except for this brilliant one.

Sorry cant find it. The one I read this morning. Its the one that uses soda cans


I admire how this friend of ours, uses his senses. He was able to arrive at the correct route. Without the aid of schooling. I am not as adept. I just lucky that I got the schooling and decades of playing with fire. Without it I would likely have copied all the wrong thing I have read from internet, just as everyone is doing.
He uses his senses akin to this:
Get a long and wide piece of metal and wood and put it on a wall facing the sun. But first paint the wood black. Finish a cup of coffee and place your cheek next to the wood panel without touching it. Do the same to wood. Did you feel the heat? Where? Remember that we are only imagining. But you felt the heat. Now touch the skin of your arm to both alternately as long as you can. Did it burn? Where? Experience will tell you where. Most 15 year old boy can already tell.  So what does it tell us?
-Wood is a poor conductor metal is very good conductor. Therefore it is better to use metal than wood next to your herbs, your herbs will be heated as your cheek.
- color does not absorb heat but the material. Maybe it conducts better when painted black and dull. point is; color is not the main thing.
Another from experience:
If I put a glass of water on a whistling kettle and put a small fire under it. The water will dry up. Without air passing over the surface of water. Therefore air molecules fly the moment they have absorb enough heat. They fly with the air molecules and not the popular mantra that air carries moisture, the more heated it is the more water it can carry. That’s BS science. The heavier water molecule carried by the lighter one? I don’t think that’s possible. Anything that’s heavier than water will sink and anything that’s lighter will float.
This is what I can afford this time. will tell more if I have time, but I will leave a nutshell.
Gather the radiation of the sun in a metal and transfer it to air by conduction. Do not heat the air by radiation. Its like a marriage between moron that produces an idiot. Just trying to be funny.  Do not use a fridge with its insulation on unless you are putting the sun inside with the herb
I am not yet complete with the project but I have test burn it already. This is good news for everyone obsessed with solar drying Top shelf at 65C, bottom temp. 40C, sun radiation at 70C, when fully loaded 14 trays 30 X 30 inches. Dried 7 trays of morringa when the sun is out all day. The other 7 is half dried. Dried it couple of hours the next day.
If you want plans for this project send me a purple moose I will accept donations for the plans. But you can also wait until I am finish explaining everything here then make your project.
 
This is my favorite tiny ad:
Food Forest Card Game - Game Forum
https://permies.com/t/61704/Food-Forest-Card-Game-Game
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