• 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 private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • Pearl Sutton
  • Mike Haasl
  • paul wheaton
  • Joylynn Hardesty
  • Dave Burton
master gardeners:
  • jordan barton
  • Greg Martin
  • Steve Thorn
  • Carla Burke
  • Jay Angler
  • Kate Downham

6" system with 5" chimney?

Posts: 51
Location: Middle of Germany
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

I want to build a RMH in my plantship (see: https://permies.com/t/27725/green-building/types-eco-buildings).
The thing is, that the passage through the wall is build with diameter 13 cm which is about 5".
Now I think about building a 6" RMH with 6m of 6" pipe in a 6m clay bench and than a 5" pipe up and out.
Because the air in the pipe will be cooled so the air will be shrunken (right word?) So I think that the last part could be 5" pipes.

Is that possible?

That is a picture of the wall from outside:

Or should I better build a 5" system?

Thanks for help

Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
hugelkultur fungi books wofati solar woodworking
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Konstantin Kirsch : Build your system the way you want to, come up from the end of your thermal mass still in 6'' and make the 6'' to 5'' reducer part of the thimble-
(sometimes called a Jack west of the Mississippi, here in the U.S.A.)
then use your 5'' system for the rest.

You may not have any problem at all, I would havea plan to replace the horizontal 5'' thimble with a 6'' thimble just in case ! Good Luck ! For the good of the craft !

Think like fire, flow like gas, Don't be the Marshmallow !As always, comments and questions are solicited and all Welcome ! PYRO - Logically, BIG AL !
10 Podcast Review of the book Just Enough by Azby Brown
will be released to subscribers in: soon!
    Bookmark Topic Watch Topic
  • New Topic