Google has some ideas, but I like the descriptions and variety of suggestions on Wikipedia, under the heading of "solar still - water"). Have a look and see what you think...
There are several forms of Solar Still which are very simple to put together
and which work reasonably well. But their designs are just a bit too
simple for what I have in mind.
I'd make the Solar Still in two sections:
(1) the Water Heater section in sunlight,
(2) the evaporator/condenser section in shade.
I'd construct the Water Heater portion of the unit similar to how
DIY Science Guy does in this video.
I'd place the Water Heater on the ground or slightly above it in
the sunlight and connect it with hoses to the Evaporator/Condenser
positioned several feet higher above it. This portion of the unit
would be shaded from sunlight to help cool it. I'm thinking that
hot water from the heater would flow by convection up to the
Evaporator/Condenser input and then return back to the heater
through its output connection.
At the Heater I'd have means for draining the mineral enriched
water periodically to replace it with fresh water to avoid mineral
buildup in the setup.
I have some thoughts on how I'd make the Evaporator/Condenser
and its connection to the Distilled Water collector but am far
from a definite structure design.
If well made such a setup could conceivably operate reliably for
quite a few years while delivering a pretty good daily supply of
Where freezing is a danger certain precautions would have to