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Water From Air
Shea Cockrum thinks that extracting water from air is the solution to the world's water shortage. Honestly, I'm not sure whether he's a nutcase, or if his theories could actually work. He claims that he was extracting one or two gallons of water an hour from an "air well" that he constructed in his backyard consisting of buried PVC pipe through which hot air was blown. One or two gallons of water an hour, if he was really getting this, isn't bad at all. And according to Cockrum, this was just the beginning. His new system is even better. Like I said, I have no idea if this could be done... though I do know that an incredible amount of dew collects in my yard every morning, which is the only reason I'm reluctant to dismiss his theory out of hand.
Free Energy
Posted by The Curator on Mon Oct 04, 2004

Tawfik you did not leave contact information. Give me a call at NO PHONE NUMBERS, PLEASE - MOD and we can discuss the oportunity you are interested in funding.
Posted by Joe Ellsworth  in  Utah, USA  on  Fri Aug 04, 2006  at  02:06 PM
As it seems many people here are interested in
Posted by Skippy  in  Australia  on  Tue Aug 08, 2006  at  10:30 AM
Skippy, I have the economic solar device you are talking about. It is part of our EEDRT process which uses solar thermal heat to generate a gas flow. This gas flow can be used to produce electricity but it is more efficient when it is used to directly drive Air to water process. [No Ads Please]

I read about the vote you where talking about. Quite frankly I would also be hesitant to accept sewage that has been treated with membrane technology.

Producing 1,000 liters per day is fairly easy with our solar thermal powered [No Ads Please] system. There are also options that would allow us to use local waste water to increase local air humidity which would dramatically lower the energy cost and hence the capital cost for the A2WH system operating in your area.

In your area the ground temperatures are not cool enough to work with the simple buried pipe approach that Shea first recommended. For your area we have only two choices to increase the humidity in the air or reduce the air temperature. A2WH uses solar thermal energy to chill the air sufficient to reach the dew point. We can also use your ground temperatures as a heat sink which is particularly effective whenever the air temperatures are more than 10 degrees above ambient.

[No Ads Please]

I was under the impression that Australia has large aquifers containing salt water. Our patent pending water distillation technology can purify the brackish water for potable use and it is quite a bit cheaper to desalinate than to extract water from air.

There may be a significant opportunity in your area to treat grey water for use in small gardens and we would love to work with you in your local market to test this concept.
Posted by joe at xdobs  on  Tue Aug 08, 2006  at  05:38 PM
Skippy, I am a resident of India and know of a comapny WaterMaker (India) Pvt. Ltd because they have done some extensive advt. marketing in India. They make machines upto 5000 litres per day and have their own subsidiary which also makes compatible solar equipment to power these machines.

for more details you can visit:

Posted by Ashvidia  in  India  on  Wed Aug 09, 2006  at  03:57 AM
Skippy, I am a resident of Utah and work for a R&D firm XDOBS who can provide the solar technology you are looking for. For more information see: THIS IS NOT AN ADVRT PLEASE

PS: Moderator. How are people interested in the topic supposed to exchange contact information when no emails are included and you remove contact information from responses?
Posted by joe at xdobs  on  Wed Aug 09, 2006  at  02:32 PM
Hi Guys, Ashvidia in India - joe at xdobs

Thank you for taking the time to respond with advice and info
Posted by Skippy  in  Australia  on  Sun Aug 13, 2006  at  02:41 PM,71898-0.html?tw=wn_index_2

Of course, as you see above, the military has this ability, but they keep it a secret. All mere mortals can do is pray for crumbs - maybe someday you will notice that some of the top spies have bought up half the land in the Western U.S., and if you rush to join in with them before the price maxes out you might make a few dollars. Then you'll know some commercial gadget might be coming out (can't wait to see the restrictions and hidden spy features)
Posted by Mike S.  on  Sun Oct 15, 2006  at  01:52 PM
How much is Air to Water worth per gallon? In particular how much is it worth if the system can run entirely from renewable energy including any required solar panels?

I can obtain the IP for a Night radiant system which uses blackbody radiant cooling techniques to condense water out of the night air. The new design is expected to produce more water on more nights and will work in a broader range of environmental conditions than previous dew harvest designs. It is unclear if there is sufficient market demand to justify moving the technology into large scale production. This design is specifically targeted at humid regions where temperature at 10:00PM averages 0F to 8F above the ambient dew point.

How low do manufacturing costs need to be before it becomes attractive? Which market segments would be the most viable? In which geographical areas? At what cost points? Why will buyers in those markets be interested at that price point?

The Night Radiant A2WH system is manufactured in 100 square foot packages. In ideal weather conditions 100 square foot will produce between 2 to 3.5 gallons. At what price point will these become attractive and in which markets? The problem with this particular technology is that to obtain reasonable production costs production must be ramped up into the range of 100,000 square foot per month and it is unclear if there is sufficient market to consume that amount of product.

The night radiant design is self contained and requires no external fuel or electricity. It uses a small amount of PV energy to operate an on board micro controller and some low power fans. The PV panels approx 15 watts per 100 square foot are included.

I am considering packaging a 6 to 10 gallon per day system for the USA market intended for rooftop installation in the humid gulf coast states. We must be confident of selling 400 systems per month before it would make sense to invest in a production line. What price point would be needed to reach that volume and which channels would be best for distribution? We hope to see interest in coastal areas where people need a source of potable water to survive after a major disaster knocks out both power and water. Any feedback or advice would be greatly appreciated (.(JavaScript must be enabled to view this email address)).

Comparable electricity driven systems would be combined with sufficient PV solar panels to provide all needed power. The Electric systems claim to consume between 0.6 and 2KWh per gallon of water produced. At 0.6KWh per gallon it would require 1.8Kwh to produce 3 gallons. Assuming a 6 hour sunlight day 300 watts worth of solar panel should provide 3 gallons of water per day. I am very interested in cost and actual energy consumption feedback from people who have field tested the electric systems using PV for power.
Posted by Joe Ellsworth  in  Utah USA  on  Mon Oct 23, 2006  at  06:36 PM
Here is a variant I think is worth testing.

Rather than running air under the ground which has some obvious scaling and cleaning issues how about changing your design to use a geothermal ground loop which circulates fluid which is chilled by the ground. The geothermal tubing is pretty inexpensive and comes in 1,000 foot rolls ideal for large scale thermal exchange

Use the chilled fluid in the geo loop circulated through a water tank which chills the tank. The heat exchange into the water tank could be as simple as coiling several loops of the geo loop tubing inside the water tank.

Then use cause your air flow to go through a heat exchanger submerged in the chilled tank.

In this way you have to circulate relatively little fluid in the ground loop which uses less power and is cheaper than pipes large enough to carry sufficient volumes of air and you don't have to worry about mold and other things growing in the buried pipes.

It ought to be pretty fast to install a few thousand foot of the geo loop with a standard trencher.

The air condenser would be submerged in the tank where fluid to condenser contact will give a good thermal exchange. The air flow path is only the length of the tank which will minimize fan power and the condenser is above ground where it can be easily accessed for cleaning.

I am using some of these concepts in the A2WH night radiant system but in some areas it might work without the night radiant chillers

Thanks, Joe
Posted by Joseph Ellsworth  in  Heber city, UT USA  on  Sat Nov 04, 2006  at  08:04 PM
I have a natural spring/cave under my home. I want to be more ecologicl than draining it down to the storm drain. Also, they aren't sure where
it is exactly, exact by the rocks...???
Does anyone that has engineering experience have
a reaction? Thanks, Grandma Coledust
Posted by Gotta underground water thing  in  South Dakota  on  Fri May 30, 2008  at  07:17 PM
Copper pipe works good also. even indoors i had one total full of water over a 3 yrs.
Posted by mike  in  canada  on  Sun Jul 25, 2010  at  03:06 AM
These days water from air machines are quite common.... our domestic model will produce around 20 Ltrs day

Total cost of water is that of the energy consumed to produce it.
EG: around Aud $ 15cents Ltr.

But there are many out there which will produce 100- 200- 300Ltrs and more per day.
Price per ltr will be a little less than ours.

There are many manufactures of these machines....
just google ...water from air machines ..or air water generators etc...

You should find a supplier in your location
Posted by Skippy  in  Australia  on  Wed Jul 28, 2010  at  09:34 AM
2 comments @ Mike:

Knapen's air well in Trans-en-Provence produces only five liter condensed water each night, following
Posted by Konrad Fischer  in  Hochstadt am Main, Deutschland  on  Sun Jun 05, 2011  at  02:07 AM
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