• 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

barrel question  RSS feed

 
Posts: 134
1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
how does the top of the barrel not melt down? the temps that are reported in the riser have to be pouring onto the barrel top. why doesnt that melt a hole in it? would it be better to have a riser with a masonry plate on top(with same clearance as barrel would be) to protect the barrel? or maybe attached to the barrel top, on the inside?
 
gardener
Posts: 2707
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
93
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Well Ronald, the top of the barrel receive very hot gases, but since it's not insulated, and also because metal is a good heat conductor; it radiates the heat received to the outside air very fast. So the metal can't reach it's melting temperature.
 
Posts: 75
Location: Louisville, KY Zone 7
1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Also I remember hearing that by insulating the barrel at the top you can hurt the function of the RMH. Since the barrel cools the gasses allowing them to fall down and work through the system, if it is insulated that does not happen and the exhaust has to force the gasses down and out of the barrel.
 
ronald bush
Posts: 134
1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Satamax Antone wrote:Well Ronald, the top of the barrel receive very hot gases, but since it's not insulated, and also because metal is a good heat conductor; it radiates the heat received to the outside air very fast. So the metal can't reach it's melting temperature.



i see, thank you. i read where a guys got red hot and wondered how long it could sustain that kind of treatment.

does the barrel top have to be flat? i have a bulged bottom barrel and flat. what one would be better if it even matters? i also have a few old kegs(stainless i think?) could i use one or two of those?
 
See where your hand is? Not there. It's next to this tiny ad:
Binge on 17 Seasons of Permaculture Design Monkeys!
http://permaculture-design-course.com
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!