I am enthralled with the vortex stove. And am also wondering about ways of tweaking the secondary burn for the utmost efficiency. Seems to me that evoking a more deliberate heat riser with turbulent elbow could achieve that. So i have done up a sketch with the basic idea. (already thinking of better ways to introduce secondary air…)
Pat, this ressembles a bit Matt's angled riser, and there's a smidge of batch box too
My impression is that it could be done a bit more rocket'y style. As Vortex reduced the lengh of his box, may be doing a brick partition at the end of the firebox, with a port; this could be feasible. And then, that space would also act as the begining of the heat riser. Following that, you could do a broken riser. instead of the flat channel with the elbow. A broken riser angled to the front as this flat channel is, but also to the side, to increase the working lengh of this heat riser. Imagine the riser doing a diagonal from one corner to the other, seing the stove from the top.
Mind you, this is all theoretical.
There's one observation from the range retrofit tho, the firebox and port are one size smaller than the heat riser. Firebox loosely based on a 10cm batch, rather short. and the heat riser is 12cm diameter, real short compared to what it should be. May be 67cm iirc. But this thing roars with the 11m chimney above.
Pat, I would think something like this would be worth a try, sounds like Max is thinking along similar lines. Personally I like having the firebox exit at the front it makes for a good show, but I agree some kind of horizontal riser before the fire comes out under the griddle would be the way to go.
I remember viewing your forum post on the russian examples some time ago.
As the rocket batch boxes evolve towards masonry fire chambers… i am not surprised to see Russian examples.
In the heater i am currently building i decided to shape the fire box much the same as vortex has done, but with some trip wires and secondary air concentrated in to the throat. I wanted to make sure i can achieve the slow gasification burn that he can achieve when the primary air is closed. I am close to completion so we shall see.
I do wonder about the pros and cons of having the throat at the front or rear… It is hard to know when something is done just out of habit, or for a reason that no longer applies as variables shift…
Yes i have been thinking of how feeding the secondary air under the front lintel above the door could make for much heat. On the one hand i want the lintel to be hot so the air heats up. On the other, i do not want to thermally stress that piece. I have added fiberglass in sodium silicate to the outer front of it. ANd will add 1/8" ceramic felt to the underside of it (above the metal sleeve across the throat. Hopefully these will help achieve the desired secondary air heat and structural protection...
mercedes: Not sure where this question will end up...I just registered. HOW THICK SHOULD PERLITE/VERMICULATE/CLAY INSULATION BE BEHIND THE THERMAL BATTERY/COB BENCH IF IT BACKS UP TO A STRAW BALE WALL? Thanks! Can you please also post me: firstname.lastname@example.org thnx!!
May 28, 2018 20:05:23 GMT -8
kkp: Mercedes: Benches don't get real hot. In fact, they are rather cool compared to other areas. You shouldn't need a mix like you described
Jun 7, 2018 18:10:52 GMT -8
maartenmartens: beste Peter, ik heb je eergisteren een mail gestuurd via het contact formulier op je website , heb je die goed ontvangen ? mvg Maarten Martens, architect - geobioloog (mail betreffende de bouw van onze eigen RMH)
Jun 20, 2018 13:21:57 GMT -8
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8