• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies living kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • raven ranson
  • Jocelyn Campbell
  • Julia Winter
stewards:
  • paul wheaton
  • Burra Maluca
  • Devaka Cooray
garden masters:
  • Anne Miller
  • Pearl Sutton
  • Joylynn Hardesty
  • Shawn Klassen-Koop
gardeners:
  • Joseph Lofthouse
  • Bill Crim
  • Mike Jay

Earthtube shop heater/cooler  RSS feed

 
pollinator
Posts: 684
Location: Richmond, Utah
32
  • Likes 4
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
The stainless steel pipe runs underground for about 35' and comes up in my greenhouse where I can decide whether I want it to connect to the fan for cooling or leave the fan open for pulling heat from the greenhouse into my shop.
IMG_7569.JPG
[Thumbnail for IMG_7569.JPG]
Air intake in the orchard
IMG_7570.JPG
[Thumbnail for IMG_7570.JPG]
Fan in heating mode goes through the wall into my shop
 
pollinator
Posts: 363
Location: NW Pennsylvania Zone 5B bordering on Zone 6
8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I would be interested in knowing if a concept like this could work to cool a "greenhouse" enough in a hot climate (like Phoenix) to make it reasonable growing conditions during some of the hottest summer months. I know Zach Weiss has a lot of experience with this technology and using it for the heating aspects. I am curious of yours and his thoughts on the possibility of cooling a structure (with the suppliment of shade cloth) to a temperature in which plants would actually survive during the summer. I think if you could get that side of things figured out, with a low or not input cost, in a harsh enviroment like the desert, then it could be used to extend food production year round there too.
 
Bill Bradbury
pollinator
Posts: 684
Location: Richmond, Utah
32
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Jen,
I mostly use this to cool my shop in the summer, but we have cold winters here that make the ground cooler than a place like Tucson. I think they could work anywhere, but I would put the tubes deeper in warmer climates.

I like the control of a variable speed fan instead of relying on natural circulation.
 
pollinator
Posts: 2019
Location: Cincinnati, Ohio,Price Hill 45205
68
forest garden trees urban
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
What kind of tempature changes do you see when cooling your shop?
 
author
Posts: 32
2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Jen,

I agree -- it depends a lot on your earth temperatures in Phoenix. A good resource is this: http://www.wcc.nrcs.usda.gov/scan/
And, depends on what seasons you want the cooling. The summer soil temperatures will be warmer, but you will still likely get a small cooling effect.
We generally find drops of 5 to 40 degrees in cooling in our Colorado applications, but we now have some in Alaska and some to be going in warmer places too.
Lindsey
Ceres Greenhouses
ceresgs.com
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!