Glenn Herbert wrote:If you are in Canada, it is likely that you will need much more heat than a 4" system can provide. This of course depends on how big an area you are trying to heat. Also, even experts find it tricky to make a system as small as 4" run well. A 6" system is the smallest you should attempt for your first build, and depending on the heating load you may want an 8" system. We need detailed figures about your house heating load for the experts to advise on what system would be best for you.
Then a steel heat riser of any kind is doomed to quick failure in any properly functioning rocket mass heater. The combustion core will see temperatures up to 2000 degrees F or more, and the required insulation around it will keep the heat in and the active combustion gases attacking the steel. The barrel around the heat riser sees much lower temperatures and only inert complete combustion products like CO2 and water vapor.
Adam Dombowsky wrote:
Glenn Herbert wrote:If you are in Canada, it is likely that you will need much more heat than a 4" system can provide. This of course depends on how big an area you are trying to heat. Also, even experts find it tricky to make a system as small as 4" run well. A 6" system is the smallest you should attempt for your first build, and depending on the heating load you may want an 8" system. We need detailed figures about your house heating load for the experts to advise on what system would be best for you.
Then a steel heat riser of any kind is doomed to quick failure in any properly functioning rocket mass heater. The combustion core will see temperatures up to 2000 degrees F or more, and the required insulation around it will keep the heat in and the active combustion gases attacking the steel. The barrel around the heat riser sees much lower temperatures and only inert complete combustion products like CO2 and water vapor.
Ok my house is 2 storeys plus a basement, each level is 800 sq ft and it was built in 1910 so has no insulation other than the 2" styrofoam I installed on the exterior. My house is an old modular cat agog house so its walls are a dual sheeted panel with a 2" dead air space inside each section so that does give some r value.
I am located in the metropolis of Moose Jaw Saskatchewan in Canada.
As to the riser, my cousin has a fab shop and a good selection of metal forming tools, if we make a 8" system and use stainless would it stand up long term, or would you recommend I go a step further and have it ceramic coated to prevent the gasses getting to the metal?
God of procrastination https://www.youtube.com/watch?v=q1EoT9sedqY
How permies.com works
What is a Mother Tree ?
No. No. No. No. Changed my mind. Wanna come down. To see this tiny ad:
Rocket Mass Heater Jamboree And Updates
https://permies.com/t/170234/Rocket-Mass-Heater-Jamboree-Updates
|