Second and now third air!

This time we try out a new air wash for the top window, a new slopping afterburner and a new bigger window.

[@Boscovius]

Outstanding! You've put a lot of work into this project. I very much appreciate you putting in the extra effort to document and share your findings.

[@meradu2]

So far for the first time on this channel I’m getting very motivated to give it a try to c for my self haw is going to work I have a wood stove that is very good and and I’m happy with the heat , but better and cleaner burning stove is what I’m looking for lol I I Have the Morso 1B with the arch top not the second one with the square top just saying Good video thank you for sharing

[@esquire9445]

I think the additional air needs to be routed in a way that it’s preheated.

[@foxfish7115]

Hi, thanks for your comment , the secondary air in this format is massively pre heated as it travels through the space above the fire box. The temperature inside the fire box runs around 500-550c, the ceramic glass that make the top of the fire box allows most of that heat into the secondary air gap so the air is very hot but you have to be aware of just how much pre heated air expands so the gap has to become bigger and bigger the hotter the air becomes. So in this case I think the secondary air will be around 3-350c when it enters the vortex chamber.

[@romilsonmagalhaes6487]

É um design muito interessante. Eu acredito diminuir a camara da lenha, como um fogao foguete comum, onde a camara de combustao é menor. Meus parabens para voce!

[@johanv4668]

a chimnea gives more draft and more power and clean burn but very nice idea

[@foxfish7115]

@@johanv4668 wow I did not realise a chimmea could operate at 750c, perhaps I am thinking of something different?

[@johanv4668]

@@foxfish7115 i think if you add about 2 mreters of 50 mm 60 mm tube it will add loads of draft. this draft gives you more control on the second air hole. yes 750c is no problem for most just simple metals. thats why after a clean burning chamber you take some heat off. and then take the hot gasses into a metal chimnea. like water jacked.

[@foxfish7115]

@@johanv4668 sorry John we must be talking about a different thing as I cant see how a chimmnea can compete with a 4” vortex stove! My base model, which is really small runs at 750c in the afterburner that is 1400f the 6” can hit over 1000c that is close to 2000f I have lots of videos on my channel, this one shows the temperature but my new model gets hotter still…. kzbin.info/www/bejne/iaDFiYSoppqppZYsi=WwcJKbMhva2fqt_K

[@orcoastgreenman]

Awesome! Is this based on the vortex stove shared on donkey32's proboards forum? (Edit... next suggested video title from your channel answered that for me.) Great work! I really want to see a video of this running at night! (A full load burning in vertical format, with both top and bottom visible, would be beautiful, for informing and exciting the general public, but in my case, for getting my housemates more interested in helping me build a rocket mass heater of some design or another to improve our comfort level here in the chilly but highly forested PNW...) I am very much liking your design, and thanking you for adding your efforts to this open source development for the good of our selves, through solutions given freely, to our fellow man...

[@foxfish7115]

Thank you, staking the wood vertically has been tried but led to over fueling issues, it would be great for more people to experiment, there is still room for improvement .

[@orcoastgreenman]

@@foxfish7115 - I meant vertical format camera orientation, close enough so the beautiful flames fill the lower and upper segments of the image... 😊 Love your design there... going to try casting a scaled up 8” or 10” version from a Geopolymer mix I have come up with, to see if it can work well as a poor man’s insulative refractory castable.

[@foxfish7115]

Cool good luck with your mix, I have tried filming the stove in the dark (last summers videos) but my phone cant cope with the lighting and it is just a yellow blur. However it does indeed look nice at night.

[@ing.pagano]

where can I get the full schematic of this version with all the dimensions? I'd be happy to build one and report back on the results

[@foxfish7115]

The previous video has the dimensions.

[@ing.pagano]

I have seen that, but I don't think you mentioned the dimensions of the primary air and the details of the tilt... Did I miss it?

[@foxfish7115]

@@ing.pagano ok I will give more details in the next video.

[@ing.pagano]

The only detail I'm missing is the size of the primary air

[@foxfish7115]

@@ing.pagano hi and sorry for not posting more info, the primary air should be adjustable if possible. If you look back to last summers videos I was only using two 40x40 mm triangles as the air was coming in from under the slopping floor but I have found it starts better with the door open, then 50 x 50mm primary air once the fire is going well. So last year the stove would run on 16 square cm this year I have 25 square cm but I can close that down near the end of the burn. I have also found a better way to use the secondary air, I hope to have a new video next week.

[@ricardoclemente3255]

doesn't this burn a lot of wood? I mean, if I need to build one to use as heater on the living room, would it be efficient? thank you

[@foxfish7115]

The stove pours out huge amounts of heat for around 1.1/4 - 1.1/2 hors on a small amount of wood but you really need to attach some mass to hold the heat for longer. These type of stoves burn every single bit of wood including the smoke so they are very efficient but they do that they must burn very fast….

[@peter-lee]

Block the secondary air injection port and let the air curtain cleaning system act as secondary air injection, what will happen?

[@foxfish7115]

I will have to try it to find out!

[@orcoastgreenman]

One purpose of an air wash on ceramic stove glass, would be to keep it’s temps down to prevent clouding that can happen at higher temperatures.

[@adnanpilikan5480]

what would happen if you put a litle bit plastic like a pet botle or packet etc

[@SamuelMantravadi]

I'm wondering if you could take some exhaust off of the sides of the secondary chamber and go back down on either side to connect to bells on either side of the box and then exhaust back to the chimney from both sides. I've been looking at a way to insert a rocket mass heater into my existing fireplace so I don't need to do a lot of modifications to the masonry and something like this with parallel riser masses on either side would be interesting.

[@foxfish7115]

It may be possible but even small changes can have an effect, have you seen this video …. kzbin.info/www/bejne/i4WuiIuHiNV1jJI

[@mantusandu]

🔥💪🔥

[@audiokees4045]

Nice for use on a camp, for warm the tent, a big tent because a small one does not be save.

[@foxfish7115]

Migjt be a bit heavy and awkward to move around but it is capable of heating large spaces!

[@audiokees4045]

@@foxfish7115 Yes that is right, but have seen batch boxes made from fermiculite board and wrapped outside in thin metal, bend a box where the heater is in. This are light versions suitable for this purpose. Thanks for reaction.

[@solexxx8588]

A downdraft gasifier will crack more of the tars in the wood smoke. Pyrolysis happens when the smoke is passed through a bed of charcoal at a high temperature with restricted O2. The resulting gas is mostly CO with some H2 and CH4(methane). If you direct this gas to a secondary burn chamber and introduce more air/O2 it will burn clean and hot since the tars have been cracked. The clean hot flue gas can then be routed through thermal mass before exiting the chimney to retain as much of the heat as possible. Gasifier boilers are much more efficient than the junk science of "rocket stoves/ Rocket mass heaters" since water is a more efficient heat sink and the heat can stored in a tank and pumped to radiators or in-floor hydronic piping.

[@myotherusername9224]

Can you recommend a brand of gasifier boiler that is much more efficient than these batch rocket mass heaters?