[Stoves] ------ making salt just an aside

ajheggie at gmail.com ajheggie at gmail.com
Sat Aug 29 02:38:11 CDT 2015


[Default] On Sat, 29 Aug 2015 17:48:13 +1200,Michael N Trevor
<mtrevor at mail.mh> wrote:

>Well here in the middle of the Pacific Ocean, we have wind power sun and 
>salt water and El Nino.
>Solar stills making drinking water and producing salt would make sense.


Yes like Anand I was surprised by the number of pictures Rebecca found
on google of fires evaporating salt pans when solar power would seem
an ideal means to do the job. One could imaging a large flat plate on
a very slight incline having seawater trickled over it with salt
crystals raked back to the top to dry, covered with a plastic sheet
(how long does uv stabilised pvc survive in the tropics? It lasted
about 30 years at my house in England), as you say the humid air above
the evaporator could be condensed on a seawater cooled  container  and
with a prevailing wind the only input power would be a pump to bring
fresh seawater for cooling, with a re circulating injector Tee for any
saturated saltwater that escaped evaporation on the pan.

AJH




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