Vortex stove Experiment four

[@TheOuroborosWyrm]

This is brilliant! Really enjoying good old fashioned trial & error experimentation; watching you develop ideas and work things out!

[@forsytheinstauraturruinae]

These experimentation installments are so incredibly useful and helpful to follow along and see not only the how of your results and modification choices, but also the *why* for each of them. Thank you for donating the time and effort of not just continued experimenting, but also documenting, editing footage, and uploading the steps along the way. I greatly respect your work and appreciate what you're doing.

[@foxfish7115]

Wow thanks! It is just a bit of fun and a hobby but i do agree that the more info shared will help everyone in the end.

[@jacobklingel1026]

Hey Fox thank you for taking the time to post your results of your experiments! I heard you mention the slots in the back of the firebox for removing the ballast gasses, "dry seams" as it were. I've read quite a bit on the subject, Peter has done some experiments on the subject, and he mentioned that they don't really do anything for the quality of the burn. But from my readings I have gathered that they help when one loads wood into the firebox that might not be dry enough for a typical stove. I do hope that you try them out, and then toss some wetter than normal wood in there to see how it reacts! I've been designing a DSR2 out of firebrick and I included the slots in my design as I don't always have the driest wood available at all times. Thanks again for the tests, and for posting all of your results!

[@foxfish7115]

Hi Jocob, I have found a post on Donkey pro boards about a guy who has very successfully implemented two slots at 10% on his huge 180 vortex stove.

[@PollokPoochesDogWalking]

Been really enjoying watching these

[@Boscovius]

What if you were to construct the firebox so it is longer? That would give the secondary air more time to mix with the fire stream resulting in a more complete combustion. I am very excited to see that the secondary air slot is working. Now, if you don't mind, could you please construct a vortex chamber behind the firebox that will separate the ash? Lol. Just kidding.

[@forsytheinstauraturruinae]

This is what I've been thinking, too. Not only would the gasses have more residence and mixing time in the afterburner, it might slow the pyrolysis rate in the firebox and help prevent overfueling, (if the fire is lit at the back and then allowed to burn back-to-front through a longer and skinnier fuel-bed.)

[@robwiley1383]

Very interesting. Thanks again for sharing. I think the longer firebox/after burner is a great idea. One question I have is do you think the secondary air is gaining much heat in this setup given the insulative properties of the vermiculite? I’ve wondered with a well insulated firebox/ afterburner vortex if cooler secondary air was a better way to go, so long as it doesn’t inhibit the combustion temps too much. This way you need less volume of air for the equivalent oxygen. Just like in a petrol engine, which develop the most power on nice cool morning air.

[@foxfish7115]

Maybe, just so many variations to try!

[@user-xg6zp4dr5x]

check Honey Do Carpenter, he knows abt negative pressure thanks for sharing experiments also broaudio

[@evnaxuilnakoyher558]

Ай Маладэс!

[@hafsalinda]

Why not add a secondary hole in the top air box bottom closer to the glass so as too burn those unburned smoke whisps? 1" should do it.

[@foxfish7115]

Hi, please look at the later videos, the stove is still being developed but I have indeed tried your surjection.

[@alexdesousa6578]

I think you may achieve better secondary air results by super heating it. Maybe try a stainless spacer with holes drilled through. The idea behind secondary air is to get the air hot enough, that when it comes into contact with unburnt gases/fuel, it will instantly ignite.

[@foxfish7115]

Hi Alex, the gap between the fire box and afterburner runs around 360c but I have measured it at 400 during full burn! Of course you could be right but it seems to work very well anyway?

[@alexdesousa6578]

@@foxfish7115 have a look at gasification stoves, easy to make, and highly efficient, as well as smokeless despite the lack of a dedicated burn chamber. Loving your design though

[@peter-lee]

Can you experiment with injecting secondary air after turbulence has developed? This video below shows that the temperature seems to be higher, and the flame is more even and delicate kzbin.info/www/bejne/b5XJmaCBqNNgmZI

[@foxfish7115]

Hi in that video the stove is in massive overload so the holes are not working very well in that case. There are several people who have tried similar placement but it is difficult to find true results. Anyway yes I will try …….