Win a copy of The Tourist Trail this week in the Writing forum!
  • 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 experiences global resources the 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
  • paul wheaton
stewards:
  • Joseph Lofthouse
  • Jocelyn Campbell
  • Mike Jay
garden masters:
  • Steve Thorn
  • Dave Burton
  • Joylynn Hardesty
gardeners:
  • Carla Burke
  • Pearl Sutton
  • Greg Martin

RMH Temperatures at different points

 
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
We are most concerned with temperatures from where the stove pipe meets the ceiling to the end of the chimney pipe. We are working with a limited budget, so if the temperatures are low enough, can we use single walled stove pipe in that section?

Has anyone measured the temperatures at different points? I found a person on this forum who did, but the max temperature was only somewhere near 500 or 600. I also saw a YouTube video where someone guessed the temperature where the stove pipe meets the ceiling to be around 110. Does that sound right?

There's an already existing furnace chimney. We are thinking if connecting to that. The stove pipe will be at close to a 45 angle after going through the ceiling in order to connect to the preexisting furnace chimney. Will that reduce the speed too much? Anyone tried doing this?
 
gardener
Posts: 3050
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
134
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Bryan, thoses are temps taken from outside the bell and pipes of my Bell batch rocket.


Bell, on top, at full burn temp 110C°

pipe at 7m from the bell, at full blast, 65C°

Before i had a J tube, the tube wouldn't go over that 65C° temp either. Mostly, it was cooler.
 
Bryan Konrad
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I don't think they are. My apologies for not being specific and as clear as a could've been.

All temperatures I listed are in fahrenheit. Here are the sources: YouTube video (http://www.youtube.com/watch?v=Medsq0KlqCo&feature=share) and Permies Post Graph (http://www.permies.com/t/24654/a/8984/RMH%202013-04-16.png). Here's the note link to the permies post (http://www.permies.com/t/24654/rocket-stoves/Temperature-Sensors-Rocket-Mass-Heater).

I've never heard of a bell or bell batch rocket in rmh. You have a link for more info on that?
 
gardener
Posts: 2213
Location: latitude 47 N.W. montana zone 6A
275
cat pig rocket stoves
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Bryan; Yes, you can use single wall pipe when exiting your roof. My 8" system uses hvac pipe for the straight runs and black steel on the 45 degree turns. Average pipe temp is around 100 degrees on the hvac pipe and 150 degrees on the black steel. The top of my barrel runs over 1000 degrees at full roar. My exhaust pipe is inches from wood studs as well as the plastic roof of the green house. temps are not a problem in this part of the system. As far as using your existing chimney , I would recommend not using it and make a new exit for your rmh.
DSCN1905_209.JPG
[Thumbnail for DSCN1905_209.JPG]
DSCN1959_258.JPG
[Thumbnail for DSCN1959_258.JPG]
DSCN1963_262.JPG
[Thumbnail for DSCN1963_262.JPG]
 
Where all the women are strong, all the men are good looking and all the tiny ads are above average:
Dave Burton's Boot Adventures at Wheaton Labs and Basecamp
https://permies.com/t/119676/permaculture-projects/Dave-Burton-Boot-Adventures-Wheaton
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!