Regards, Scott
QuickBooks set up and Bookkeeping for Small Businesses and FarmsĀ - jocelyncampbell.com
Karen Crane wrote:THANK you somuch for posting that information on the water
sculpture project. Totally impressed with it!
Want to try them out here is California high desert,
Getting in touch with them.
QuickBooks set up and Bookkeeping for Small Businesses and FarmsĀ - jocelyncampbell.com
My books, movies, videos, podcasts, events ... the big collection of paul wheaton stuff!
Jocelyn Campbell wrote:Here's a new, sculptural air well design. Just one photo here. Go to A Giant Basket That Uses Condensation to Gather Drinking Water to click through the entire slideshow.
My books, movies, videos, podcasts, events ... the big collection of paul wheaton stuff!
Sue Rine wrote:Dumb question maybe but I'm not quite getting it...is the rebar a way of conducting heat away from the condenser to the colder earth 20 feet down so that it, the condenser, remains cold on a warm day?
My books, movies, videos, podcasts, events ... the big collection of paul wheaton stuff!
Amber Beckerson wrote:This must be where Frank Herbert got the idea for "wind tunnel moisture traps" used by the Fremen in the "Dune" books. I always wondered how possible it was for that to actually work.
Pics and text about my fermentation adventures: http://brewathonlite.blogspot.com
Updated wikipedia link for qanat
https://en.wikipedia.org/wiki/Qanat
Amber Beckerson wrote:This must be where Frank Herbert got the idea for "wind tunnel moisture traps" used by the Fremen in the "Dune" books. I always wondered how possible it was for that to actually work.
Luke Burkholder wrote: This has always fascinated me, and there is an ancient middle-eastern structure called a Qanat, which is more of a sideways well, but can also be used for cooling/air conditioning (that will inevitably collect water as well.) http://en.wikipedia.org/wiki/Qanat
Subtropical desert (Kƶppen: BWh)
Elevation: 1090 ft Annual rainfall: 7"
Olivia Helmer wrote:I am also interested in building something to collect fog water. I am in California with the drought but where I live we have thick fog almost daily! in some of the forests here when the fog is thick it drips off the trees. the trees act as fog collectors. I have found this thread really fascinating and also exciting.
Subtropical desert (Kƶppen: BWh)
Elevation: 1090 ft Annual rainfall: 7"
Jennifer Wadsworth wrote:
Geoff Lawton states in his online PDC that in drylands, you can increase your precipitation up to 80% by planting capturing condensation from trees. In order for this to work in very dry climates, one has to plant a sufficient number of trees which I take it depends on where you are. It is fascinating and thought-provoking. I think Tucson is on the right track with all their streetside stormater harvesting and all the trees they're growing with that harvested "waste" water. They'll eventually increase tree canopy coverage from 5% to 25% and will probably begin to see that condensation effect (and UHI mitigation!) for the entire city at that point.
Olivia Helmer wrote:1/3 of the water collected for this community comes from fog that condenses on trees and the rest is from rain. I will have to try and find some local people who know more about the trees than I know and ask them if monterey pines collect more water than bishop pines do.
Subtropical desert (Kƶppen: BWh)
Elevation: 1090 ft Annual rainfall: 7"
paul wheaton wrote:I think that the key is to have something cold on a warm day. If that something is really large and really cold, it could create hundreds of gallons per day.
First, here is what a condenser from a dehumidifier looks like:
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The job of the condenser is to be a cold thing where warm air passes across it, and then water condenses on the metal and drips off - thus filling the dehumidifier bucket throughout the day.
Next, pick the coldest spot on the property. A steep, north facing slope. The average temperature here is about 45 degrees. And Hait says that that sets the temperature at 20 feet down. But on a north facing slope, maybe the average temperature is more like 40.
So what if I put a piece of rebar 20 feet down and then connect a condenser to it just above the surface and then a bowl under that?
What if this is in a thick forest?
paul wheaton wrote:I think that the key is to have something cold on a warm day. If that something is really large and really cold, it could create hundreds of gallons per day.
First, here is what a condenser from a dehumidifier looks like:
The job of the condenser is to be a cold thing where warm air passes across it, and then water condenses on the metal and drips off - thus filling the dehumidifier bucket throughout the day.
Next, pick the coldest spot on the property. A steep, north facing slope. The average temperature here is about 45 degrees. And Hait says that that sets the temperature at 20 feet down. But on a north facing slope, maybe the average temperature is more like 40.
So what if I put a piece of rebar 20 feet down and then connect a condenser to it just above the surface and then a bowl under that?
What if this is in a thick forest?
some of what I'm up to: http://www.permies.com/t/34620/projects/acre
paul wheaton wrote:I think that the key is to have something cold on a warm day. If that something is really large and really cold, it could create hundreds of gallons per day.
First, here is what a condenser from a dehumidifier looks like:
![]()
The job of the condenser is to be a cold thing where warm air passes across it, and then water condenses on the metal and drips off - thus filling the dehumidifier bucket throughout the day.
Next, pick the coldest spot on the property. A steep, north facing slope. The average temperature here is about 45 degrees. And Hait says that that sets the temperature at 20 feet down. But on a north facing slope, maybe the average temperature is more like 40.
So what if I put a piece of rebar 20 feet down and then connect a condenser to it just above the surface and then a bowl under that?
What if this is in a thick forest?
Lenn Sisson wrote:Here is an interesting design for an air well that I came across today. It includes a wind turbine to pull the air through the system.
R Hasting wrote:
Lenn Sisson wrote:Here is an interesting design for an air well that I came across today. It includes a wind turbine to pull the air through the system.
I believe that would work beautifully.
Marc Troyka wrote:
As long as the ground temp is below the dew point, yes. It's a bit more complicated though, and requires a pump for the water and a fan (although the fan could be a solar chimney or similar). This kind of collector would actually work the best in fog, but not so well in drier climates. This is because water is a greenhouse gas, so fog can block radiative collectors from cooling off, but in drier climates the night sky exposure can be very large so they're much more effective.
My books, movies, videos, podcasts, events ... the big collection of paul wheaton stuff!
paul wheaton wrote:From Jack's link:
I think this is a great idea. I am tempted to call this a "johnson style air well"
No thanks. We have all the government we need. This tiny ad would like you to leave now:
A PDC for cold climate homesteaders
http://permaculture-design-course.com
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