• 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
  • paul wheaton
  • Jocelyn Campbell
  • Julia Winter
stewards:
  • Burra Maluca
  • Devaka Cooray
  • Bill Erickson
garden masters:
  • Joylynn Hardesty
  • Bryant RedHawk
  • Mike Jay
gardeners:
  • Joseph Lofthouse
  • Dan Boone
  • Daron Williams

Heat riser material  RSS feed

 
Posts: 59
Location: Michigan
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Can chimney clay liners be used for heat risers in rocket heaters?
 
gardener
Posts: 2581
Location: Upstate NY, zone 5
92
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
No, they won't last. They are made to stand high heat, but only gradual changes in temperature. People who have used them have found that the flue liners cracked soon. They may stabilize in their cracked state, but might also fall down, probably during a hot fire.
 
gardener
Posts: 2707
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
93
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
It all depends which ones.

If it's good fireclay, with tons of chamotte or alumina, they could be fine.

I'm still in the testing phase with the batch workshop heater.

220mm diameter chimney elements from tona.

They cracked. But are stable.  There's one big crack facing the port, which seems to have the edges melted or abraded. While nothing else than gases and fly ash reaches there. This one worries me.

I'm starting my second heating season.

They can be used, imho, in the upper part of a heat riser. with IFB in the lower part.

Let say, 50cm IFB, and 100cm chimney liners.
 
I do some of my very best work in water. Like this tiny ad:
five days of natural building (wofati and cob) and rocket cooktop oct 8-12, 2018
https://permies.com/t/92034/permaculture-projects/days-natural-building-wofati-cob
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!