• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nancy Reading
  • Carla Burke
  • r ranson
  • John F Dean
  • paul wheaton
  • Pearl Sutton
stewards:
  • Jay Angler
  • Liv Smith
  • Leigh Tate
master gardeners:
  • Christopher Weeks
  • Timothy Norton
gardeners:
  • thomas rubino
  • Jeremy VanGelder
  • Maieshe Ljin

RMS and Earth Bags

 
pollinator
Posts: 335
Location: SW Washington State
15
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Has anyone combined the rocket mass stove and earth bag concept?  maybe running the heating tube inside the wall, or building a double thick lower section of the wall - maybe 1 m tall - and building the rms in that?

 
Rocket Scientist
Posts: 4526
Location: Upstate NY, zone 5
574
5
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The "My Little Homestead" family built a rocket mass heater in one of their earthbag structures.
https://www.youtube.com/watch?v=MEQH2vIsMoU

They have built several, but the rest are not so directly integrated with the earthbag wall.
 
Tom Connolly
pollinator
Posts: 335
Location: SW Washington State
15
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Glenn Herbert wrote:The "My Little Homestead" family built a rocket mass heater in one of their earthbag structures.
https://www.youtube.com/watch?v=MEQH2vIsMoU

They have built several, but the rest are not so directly integrated with the earthbag wall.



Thanks!  That is exactly what I am looking for.  I don't know how practical it would be, but I would like to make every third layer of my eb house with a hollow space in the middle and run the exhaust tube through that...to heat up the whole wall.  i wonder if that would destroy the integrity of the wall?
 
Glenn Herbert
Rocket Scientist
Posts: 4526
Location: Upstate NY, zone 5
574
5
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
It would certainly lessen the strength of the wall compared to a solid wall of the same thickness, but making an earthbag wall thick enough to fit a duct would cause it to be significantly stronger than usual. So I wouldn't be too concerned about strength.

This idea would be giving equal heating to the interior and the exterior, however, effectively cutting the usefulness in half. I think you would be much better served by doing it on an internal wall. Alternatively, I would insulate the inside of your wall and add the earthbags with duct run inside that.
 
Tom Connolly
pollinator
Posts: 335
Location: SW Washington State
15
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The wall would be an internal wall - maybe between the living room and bedroom.
 
This tiny ad never wears a bra
rocket mass heater risers: materials and design eBook
https://permies.com/w/risers-ebook
reply
    Bookmark Topic Watch Topic
  • New Topic