Thanks for all the info on Rocket Stoves !
It was a big help in designing our rocket stove that powers our heat engine.
We used a 6x6 steel J tube with secondary air added about 3" into the riser (probably shorten that a bit on the next iteration).
The J Tube is mounted into what we call the Fire Box (55 gallon drum) that the head of the engine sits in.
Here is picture of the fire box with the rocket stove mounted to it.
For more info check out our site at www.seftonmotors.com or our development blog at volodesigns-sterlingproject.blogspot.com - one of the videos on our development site shows the engine running on a small rocket stove (4x4 JTube).
Tim Sefton : Welcome to Permies, Wow, you clearly do most of your thinking outside the box, In fairness to your other Fellow Members, I am going to
seem very harsh ! IN this case your Design, what little we can see of it, Violates many of the basic ideas of Designing for Efficiency of Combustion, Safety,
And Durability of Parts ! With typical well designed conventional Rocket Mass Heaters RMHs We are quickly operating in the 1800dF / 1000dC Range where
even stainless steel will soon fail due to '' High Temperature Hydrogen attack '!
It is my opinion that you have created a '' Frankinclone ''! What you are calling a Rocket Stove! IT Does vaguely look like it could have a part from a
Rocket Stove or Rocket Mass HeaterRMH - the Vertical Fuel Feed, (Feed Tube )! This section should never be made out of steel and should be well
I can only assume that you have not yet been to Rocketstoves.com to Download your copy(s) of the Brand New Third Edition of Ianto Evans great
Book- Rocket Mass Heaters
I strongly recommend that you save yourself untold hours of effort by acquiring 'The Book' and reading it ! This will then allow you to come back to these
pages and converse with your Fellow members about Building Rocket Mass Heaters RMHs, and the proper materials to make an RMH out of ! You will then
be able to discuss individual parts/sections using their proper names and be sure that you are properly describing their orientation to themselves and
As a further aid to you in appraisal of your product you might consider going to DragonHeaters.com who have several lines of Manufactured RMH Kits for
D.I.Y.assembly, reviewing what is available on their site will be educational to you ! Their 4 inch systems are a possible match to your needs and Produce
and store for further use Approximately 95% of the heat energy looked within the wood fuels, and provide a to you still useful Exhaust gas discharge
Temperature in the Sub 200dF Range !
The heat energy that is stored within the typical RMHs Mass can easily channeled through the existing Exhaust gases chimney to continue to feed your
Heat energy to Mechanical energy to Electrical Energy conversion, or the stored heat can be taken off of the surface or just allowed to be used for
Simultaneous Spaceheating !
Good luck with your research, Many have stood where you are standing now and quite a few have worked to become true Rocketeers ! For the good
of the Craft !
Think like Fire, Flow like a Gas, Don't be the Marshmallow ! As always, your comments and Questions are Welcome and Solicited ! Big AL!
Success has a Thousand Fathers , Failure is an Orphan
LOOK AT THE " SIMILAR THREADS " BELOW !
posted 4 years ago
I'll take your "thinking outside the box" as a complement, thanks.
Regarding some of your other commentary, maybe I haven't supplied you enough detail for you to understand the design.
My intent of the post was not to review the design but to show what we've done that is working well for us and to share with the community.
To better explain here is what our rocket stove looks like in a bit more detail. (we do plan on insulating the feed tube, but not change the material).
If you want to see an early version of it in action - check out this video - good draft and no smoke.
Hope that helps - always open to improvements, just be kind !