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Old 03-11-2009   #2 (permalink)
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Turtle
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Arrow Re: Solar Desalinator (Making one-- DIY + Serious Engineering)

Quote:
Originally Posted by Michaelangelica View Post
The basic design seems straightforward enough. Ancient Greek sailing ships carried them.
This one is facing the wrong way. It obviously needs to be facing North.
You Ozzarians and your d'unders upsidedownytudinalities. North it is for you and so on to some other facts Jack. The reflective surface indicated in the diagram can be just be white paint; well laid on of course. The black absorbing pan is actually not necessary and probably mentioned because of a mis-understanding of what causes most of the evaporation when Sun strikes water. It is the photons striking water molecules on the surface that is the most active mechanism, not the temperature of the water. (somewhere I have an article on this in a global warming post*... )

This desalinator setup in the diagram is also workable to treat gray water; sludge will develop in the pan rather than salt. (Prolly a salty sludge. ) I suggest making the angle of the dangle (technical term for the sloping top ) the average of the highest and lowest angle of the Sun in your area over the period of a year. For me at about the 45th parallel North, the lowest angle is about 33º and the highest angle ~68º. 33+68=101:101/2=50.5. My dangle should angle ~50º.

*tray evaporation measure


----------------
semantics is not always just pedantic quibbling. ~ douglas r. hofstadter

Last edited by Turtle; 03-11-2009 at 11:48 PM.. Reason: add link
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