forums energies: society, ecology and clean technologies

I can't resist the temptation to show you this: it doesn't break down, and it's very, very pretty!

http://www.wedemain.fr/m/Warkawater-la- ... _a544.html

the site:

www.warkawater.org

It is really beautiful.
Thank you for this elephant link.

To ask if I could not do the same thing to recover water, here in Normandy the humidity is usual ...

Nice photomontage, but is it realistic? Humidity must be in the air and perhaps expensive for the poorest.
http://secouchermoinsbete.fr/22769-leau ... e-au-perou

if it makes free water why do we need money?

I think it requires large areas of fine fabric, which has a price and a limited lifespan, which ultimately makes a significant price for water.

there were large nets to collect the water from the humidity which turned out to be more expensive to use than the desalination of sea water and we were abandoned

be careful not to collect more dust than water and have dirty water

without energy does not mean free ... the lack of water is especially serious in countries where there is a lot of sun and where photovoltaic energy is not expensive

Clever people smelled the vein without result https://www.kickstarter.com/projects/36 ... rop-counts
https://www.gofundme.com/warkawater

chatelot16 wrote:be careful not to collect more dust than water and have dirty water

Or no water at all It takes fog and wind. Even in Chile, they give up because not reliable enough
the Chungungo sensor prototypes are out of use. In the summer of 2002, only nine of the 94 sensors originally installed on El Tofo Ridge were still there. The cables and nets were taken for use elsewhere, and the supervisor's house was demolished. The village is now supplied with water by truck, which costs much more.
According to Jorge Nef, professor of rural extension at the University of Guelph, the lack of real desire to ensure the long-term operation of the fog sensors shows that we neglected at the outset to check if the population accepted really that kind of technology and how ready it was to help maintain the sensors.

http://www.idrc.ca/FR/Resources/Publica ... tionID=686

The human factor is indeed determining: this kind of project must be super supervised and concern peaceful areas: nothing is easier to drive out a population than to come to ransack the installations.

On the other hand, what prospects: relieve the work of women, train local workers, make bamboo arrive in containers from countries where it rains.
Sad to say, but it is a fact: the colonies did not have only disadvantages (look at the ex-Belgian Congo: they may be independent but are starving, no longer have hospitals, etc. ...)

As for the purity of the water, it is understood that the water must be filtered and even remineralized.

Other solutions exist, more technological, because the water is there in the air. We can perfectly imagine machines akin to building site air dryers powered by PV, but it is much more expensive and the compressors will eventually wear out and break down.

a refrigerated dryer works on whatever the temperature or the wind, provided that the humidity is not zero

the stretched canvas system works only under very specific conditions it is not obvious that it works anywhere where it is needed

the current refrigeration dryers do not have a double flow style exchanger to save energy .... I think we can reduce the energy consumption a lot with a large exchanger .... or increase the production of water for the same refrigeration unit

but in my opinion it will always be more expensive than the conventional drilling and solar pump solution

Giant drinking bird to pump water ...
I laugh, because a large part or all of the pumped water would be evaporated to produce mechanical energy
Some have thought about it: http://www.rts.ch/la-1ere/programmes/im ... -2010.html
The date of the article is important

And then in the desert, the underground water tables are as rare as the fog, right?