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Discussion board help and admin topics => Half Baked Ideas => Topic started by: pinobot on August 06, 2006, 07:03:12 PM

Title: Osmosis Water Flotation Thingy
Post by: pinobot on August 06, 2006, 07:03:12 PM
Hi,
Really half-baked so don't flame me too much.  ;)
I'll show you this picture.
(http://img.photobucket.com/albums/v156/pinobot/osmosisfiltergif.gif)

How it works: Remember this is just an idea, no blueprint or anything.
Anyhow, it works by the fact that salt water is heavier than fresh water. The osmosis filter inside the cilinder can move up and down and is "Powered" by the weight under it. The osmosis filter filters out the salt leaving only the fresh water, so it's kinda like an underwater balloon (but completely different). ;D

bye

Title: Re: Osmosis Water Flotation Thingy
Post by: pinobot on August 07, 2006, 11:06:44 AM
(http://img.photobucket.com/albums/v156/pinobot/osmosis2gif.gif)

Alway trying to make it more simple :)

1 liter fresh water weighs 1 kilogram
1 liter Dead Sea water weighs 1.320 kilograms
pressure needed for reverse osmosis: 3 bar (optimal, according to commercial product)

i'll be back. :D
Title: Re: Osmosis Water Flotation Thingy
Post by: hartiberlin on August 07, 2006, 12:21:58 PM
For what purpose should that design be good ? For to extract fresh water easily from seawater or just to rise this thing out of the water ? Where does the extracted sea salt go ?
Title: Re: Osmosis Water Flotation Thingy
Post by: pinobot on August 07, 2006, 03:46:52 PM
Hi,
This design serves very little purpose, the filter stop working after it's clogged with dirt (it's basicly a very fine mazed filter), and for generating energy it's costly and doesn't generate much energy. It's only an attempt to theoreticly brake the laws of thermodynamics.
The 2nd picture is the most interesting, the reverse-osmosis-filter filters out the salt so the salt stays on the salt water side while the fresh water side always stays fresh.
You need pressure to press the water through the filter (3bar is optimal) you get this pressure by simply building a columb of water high enough to generate this pressure but you need to keep in mind that the fresh water also pushes back but is less heavy than salt water so if you make the salte water columb high enough you'll get the required pressure.
Don't know if it works though, i recently installed an aquarium and did some reading about clean water and reverse osmosis filter, that's when i got the idea. :)