• 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
  • paul wheaton
  • Burra Maluca
  • Devaka Cooray
garden masters:
  • Anne Miller
  • Pearl Sutton
  • Joylynn Hardesty
  • Shawn Klassen-Koop
  • Joseph Lofthouse
  • Bill Crim
  • Mike Jay

Earth Tube Layout - Grid VS Spiral  RSS feed

Posts: 36
Location: Columbia Falls MT
bee cat woodworking
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Researching in ground heat banking for winter I notice the absence of spiral tubing layouts. It seems that everything is grid based.

A grid fits nicely into corners and side by side leaving no spaces but it would seem to me that the tubes closest to the air intake would get the most heat and the further down the manifold you get the cooler the air gets along with less air flow.

A spiral would leave triangles in corners and next to one another unheated but the heat and air are in a single length to tube. Sure as the air progresses further in or out of the spiral, depending on air direction, the temperature bleeds off but it seems a much more simple design. Less connections and less potential leaks.

Can anyone explain why there seems to be no use of spirals? Are there that many disadvantages that they simply arent used?

If a spiral works in a compost pile to extract heat why not in the ground to bank heat?

Posts: 516
Location: Salt Lake Valley, Utah, hardiness zone 6b/7a
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Trench diggers don't like curves?
This will take every ounce of my mental strength! All for a tiny ad:
Food Forest Card Game - Game Forum
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!