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Targol
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by Targol » 01/08/07, 13:29

Christophe wrote:
Targol wrote:Image

All you have to do is transfer the salt from time to time from the lower tank and voila: there is salt at the bottom and fresh water at the top.


Well I have already thought a little bit about such a system and it seems to me that it is not so simple ... because to condense you need a "cold" surface ... but on your diagram it is the condensation surface is a priori the hottest ...

It would therefore be necessary to bury (or put under water in the case of a floating system) the "condenser" part ... but in this case a "circulator" would be necessary (1 pc fan 12V connected to a small PV plate for example?)

So then play on the day / night cycle but in this case the production may be quite low ...

I am wrong?

In any case I do not understand that such systems do not exist ... worse, it seems that no prototype study has ever been developed ... well I never came across it personally ...


Of course, I simplified the diagram. For this to work, it would suffice to give the device a still shape (for the part containing sea water. The vapors would be conveyed by a tube to a buried tank (for example) so that its walls are cold.

New scheme:
Image
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by Christophe » 01/08/07, 13:48

Ah, here I am already more in agreement with this new scheme (a small fan between the 2 tanks would further improve efficiency I think: improved flow and depression on the evaporation side, suppression on the condensation side).

More than a large straw is needed to drink fresh water : Cheesy:

So I ask my question again: have such systems already been studied? And especially applied? In Africa for example ??
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by Targol » 01/08/07, 13:54

Christophe wrote:Ah, here I am already more in agreement with this new scheme (a small fan between the 2 tanks would further improve efficiency I think: improved flow and depression on the evaporation side, suppression on the condensation side).

More than a large straw is needed to drink fresh water : Cheesy:

So I ask my question again: have such systems already been studied?


Not to my knowledge.
On the other hand, this type of device removes salt (and probably some heavy components of water), but is it enough to make the water drinkable?
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by Christophe » 01/08/07, 14:08

Of course it would be enough to make it drinkable (unless the 2nd tank is obviously polluted ...).

Rainwater is drinkable right?

There is even a really very rudimentary technique for making "potable" water: a closed plastic bottle 1/2 painted black.

After 24 hours in direct sunlight, the temperature and UV rays received are such that 90% of the bacteria have been killed.

ps: I believe that a "prize" had been awarded to the technique but that does not mean that thousands of Africans do not continue to die of thirst every day ... :|
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by RolCopter » 01/08/07, 22:30

Hello everyone
Well Christophe personally I have a doubt about the potability of rainwater currently, there must be a lot of air pollutants that come down with it, and in addition to recover it I do not really know how to do it. Unless there is a permanent rain, I would not dare to drink the water that I collect in my rainwater. In the first rains (after a period without water) the roof rinse is barely good for watering the lawn.
Yuck!
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by Christophe » 01/08/07, 23:34

I expected this remark but:

1) Rainwater is currently much less polluted (by the atmosphere) than during the last past decades ...
In many cases it is drinkable when it hits the ground (after that it is another matter).

2) my () clearly indicated: "except if the 2nd tank is obviously polluted ..."

In the case of rainwater, the 2nd tank (where it condenses is obviously the place where it rains ...)

Lumberjack who works in the water will better develop the question ...
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by gegyx » 02/08/07, 19:20

The unfortunate Claude Goasguen, trapped by the X-Men, goes back in my esteem:

Speaking about the controversy around the compensation obtained by Libya in exchange for the release of caregivers, the UMP deputy hoped that "the rupture, it is also that when there is a problem of this kind, the minister Foreign Affairs is not satisfied with silence and that the President of the Republic is not satisfied with a casual response on television ".

Link
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by Capt_Maloche » 04/08/07, 19:41

Christophe wrote:
Targol wrote:Image


In any case I do not understand that such systems do not exist ... worse, it seems that no prototype study has ever been developed ... well I never came across it personally ...


But if it exists for survival pods at sea and on autonomous pleasure boats, but very uncommon

http://perso.orange.fr/energies-nouvell ... h12-10.htm
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by Christophe » 04/08/07, 21:41

Uh from what I see Maloche your link they are "beasts" reverse osmosis therefore using electricity, so a priori bcp more expensive (therefore inaccessible for the "poor") than the Targol scheme ... me am I wrong?

Details: http://perso.orange.fr/energies-nouvell ... h12-11.htm
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by goodeco » 05/08/07, 07:06

I find it very well the 1st diagram of Targol. : Idea:

It would not be enough simply to flare the base to better receive the sun's rays,
paint the lower part in black and the condensation part in white.

Now if we bury this kind of device it risks giving arguments to some people to look for weapons of mass destruction, seems that it was done in the past : Shock: Yes Yes.
And moreover they would not have found a weapon but just a black liquid in the ground and that that would be used to make full of pollution : Cry:
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