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the first wofati greenhouse design

 
steward
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Update on Kyle's handmade door (from his thread)!

Kyle Noe wrote: Up by the greenhouse, I've got the second handle done and I'm working on a solution to sealing up the gap around the handle shaft. Felt like the hours flew by and I was working at a snail's pace. I put the handles on and tried the latch out. The handles are so heavy they are making the latch slow to close. I'm going to have to increase the tension on the spring arms tomorrow.

hand-carved door handles for DIY door
One clean and fresh, one gnarled and old.



 
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Interesting passive heat transfer solution I thought could be implemented in a wofati...
 
pollinator
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Jim Siefert wrote:Interesting passive heat transfer solution I thought could be implemented in a wofati...



They are great for moving heat up.  The problem is they only work to move heat up or at a very limited down.  You need another system to move the heat down.  The limit for the down is the wicking height of the refrigerant used in the tube.  If the tube is lined with a wicking material they can be made to move heat down very limited distances but then you need lots of tubes and lots of transitions to make down work and the transitions from one tube to the next kill you.  Think of them like an electric diode that only works one way.

They could be great for doing a freezer wofati or building a walk in cooler in a basement that ran without power for say 6 months of the year in northern climates.  But the greenhouse needs a way to put the heat back down into the ground after it pull is out.  So they are non ideal for it.
 
Nicole Alderman
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Look at the glorious door! It's so close to being finished!

hand made door for earth-sheltered greenhouse
Kyle's awesome door! (Click the picture to go to his thread!)


Josiah posted a bunch of awesome pictures, too!

Kyle working on the door


mixing cob in wheelbarrow
mixing cob for the walls


 
Nicole Alderman
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More pictures from Kyle's bootcamp thread!

Kyle Noe wrote:

Put up the vapor barrier after this.


Ended the day with these done. It's going faster now as I move up and know a precise angle to cut at.

 
Nicole Alderman
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The windows are in! Check out Josiah's Bootcamp thread for lots of pictures, including....

earth-sheltered greenhouse windows installed
the windows!


aerial picture of Allerton Abbey and the wofati greenhouse!


Kyle also postedhttps://permies.com/t/155/157417/permaculture-projects/Kyle-Permie-Bootcamp-BRK#1271490 some great pictures of the trimwork he's done on the interior (it's all finished!).

pretty trim!
 
Nicole Alderman
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So much has happened in just a few days! Head over to Kyle's and Josiah's threads for even more pictures!

installing the windows
passive greenhouse windows
And now the windows are on!


I love this picture of all the pictures/filming going on!


the wofati greenhosue looks so good!


Looks like there was a pizza party (all made in the rocket oven) to celebrate!
 
Nicole Alderman
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I read this book about the construction of China's railway line to Tibet. "Methods included using pipes called thermosiphons along the sides of the tracks to refrigerate vulnerable parts of the soil along the highest parts of the plateau, an area that comprises the largest continuous sub-Arctic permafrost region on the planet. These cooling sticks are 7.6-meter-long steel tubes drilled into the soil; they contain ammonia, which draws latent heat out of the soil as it evaporates. " Might this be an alternative to that hole/trench? It has no moving parts.
 
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Bob, I believe it would require finding the exact pressure to ensure evaporation/condensation happens at the proper temperature, based on the subsurface soil temps. Say it's always 50*F 10 feet down, then the pressure would need to be adjusted so the liquid turns to a gas at 50.x*F, and as it rises up to the colder end it condenses and gives off that phase change heat. Then the pipe would need to be sturdy enough to withstand the increased pressure during the warmer months when the top of the pipe is much hotter, heating up the entire pipe above that evaporation point.
 
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I visited the first wofati greenhouse project site today. It was so beautiful, I couldn't take pictures of portions that were in construction... it would have been impolite. The thing is sooooo beautiful.
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Nicole Alderman
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I'm loving the pictures of the drystack wall that Kyle posted!

Kyle Noe wrote:

dry stack stone wall
Here's the wall before back filling and grading behind it.


I filled up right behind the wall with the gravel for drainage and support.



Magdalene posted some great pictures of the greenhouse's other retaining wall, as well as some other great pictures!

Magdalene Bolton wrote:

people on stone wall
Grey and his finished retaining wall


man chainsawing roundwood house
Action shot of Josiah and his chainsaw grimace



And, Dez snapped a picture with both walls done!

Dez Choi wrote:

wofati earth-sheltered greenhouse
final touches

 
pollinator
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The temperature in the two thermal wells has been slowly yet steadily increasing. In the month of October of the first year, we saw an increase of around 0.45 degrees Fahrenheit.
Greenhouse-sensor-data.png
Reading the air at the bottom of the thermal well, 20 feet below the greenhouse floor.
Reading the air at the bottom of the thermal well, 20 feet below the greenhouse floor.
 
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catch a glimpse of the greenhouse at 7:10 or so.  Might be about fifteen seconds of stuff.

 
paul wheaton
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You can pre-order the movie here

https://permies.com/w/greenhouse

All the video has been taken - the movie is in editing now.
 
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Any issues with rodents wanting to move into the nice warm space?
 
paul wheaton
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David Haight wrote:Any issues with rodents wanting to move into the nice warm space?



Not yet.

 
paul wheaton
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from jeff's bootcamp thread

 
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How is the green house doing in the winter? Do you have any temperature logs from the November until now? Has there been and issues with the gray water freezing? Did you try to grow anything in there? If so how did it do
 
Mark Brunnr
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Erica, I believe there are some plants growing in there, one of the boots posted pictures, but I can't recall who...

Dez's thread: https://permies.com/t/146265/permaculture-projects/Dez-Bootcamp-Experience-BRK
Magdalene's thread: https://permies.com/t/162161/permaculture-projects/Magdalene-Bootcamp-Experience
Jeff's thread: https://permies.com/t/172890/permaculture-projects/Jeff-Bootcamp-Experience-BRK
Caleb's thread: https://permies.com/t/174418/permaculture-projects/Caleb-Bootcamp-Experience-BRK
Grey's thread: https://permies.com/t/165154/permaculture-projects/Grey-Bootcamp-Journal

Sorry I can't recall who had posted a picture, I know someone did and I hope it was one of the boots!
 
Don't destroy the earth! That's where I keep all my stuff! Including this tiny ad:
Profitable Permaculture in the Far North with Richard Perkins - Gracie's backyard
https://permies.com/wiki/133872/videos/Profitable-Permaculture-North-Richard-Perkins
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