sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 15, 2022 3:13:05 GMT -8
Hello to all the writers and readers of this outstanding forum! I have been following the shared for several years! Special thanks and appreciation I want to extend to peterberg and Vortex , which allowed me to understand and implement to the best of my ability the concept of a wood stove for heating! Thanks to @donkey for creating a space where many enthusiasts share their ideas, insights and achievements, thus enabling me and others like me to dare to experiment with fire, light and heat! I'm not even trying to list by name everyone from whom I've learned something, because I risk missing someone - thanks to everyone who wrote in the forum threads! This is the result of everything I have understood so far. Space is limited. For this reason, the stove is an 11 cm system, hearth - 26 cm x 26 cm x 42 cm, with external dimensions 160 cm x 75 cm x 38 cm. Secondary air is supplied to the space between the hearth and the afterburner chamber. It will heat a 25 square meter room. The trees are arranged vertically. 5 kg per charge. They burn to coals in about 1.5 hours, to ashes in about 3 hours. Prototype: www.youtube.com/watch?v=AsmWQH_irFowww.youtube.com/watch?v=qtM5a7tztVkCombustion in the secondary chamber: www.youtube.com/watch?v=Oua3AWy0jY0www.youtube.com/watch?v=LfIX-Y0FSN8Final result: www.youtube.com/watch?v=YEeBn2l6KHMwww.youtube.com/watch?v=ivZntWsmgWwwww.youtube.com/watch?v=448f4u6XTZsStay healthy and inspired! Stefan from Bulgaria Please excuse my English - I'm using Google Translate. |
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Post by Vortex on Aug 15, 2022 10:21:43 GMT -8
Hi Stefan, Thanks for the appreciation and sharing the videos with us, it's always interesting to see new builds. What dimensions did you use for the top chamber?
Trev.
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Post by martyn on Aug 15, 2022 10:28:48 GMT -8
Great job!
It looks like you have some sort of vent above the fire, is this for secondary air?
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 15, 2022 15:15:17 GMT -8
Hi Stefan, Thanks for the appreciation and sharing the videos with us, it's always interesting to see new builds. What dimensions did you use for the top chamber? Trev. Hi Trev!These are the dimensions of the secondary camera. On the "first floor" 80 mm x 160 mm, area - 12800 sq. mm. I was looking for a "magic ratio" between the area of 1 floor and 2 floor and I chose the special 1.618. On the "second floor" area - 20710 sq. mm,~ 102 mm x 204 mm. i.imgur.com/YlP7qIs.jpgBecause of the short length of the secondary chamber, I also added a 3rd floor with a height of 60 mm. The openings between 2 - 3 and 3 floor - bell have a reserved area of 12800 sq. mm. i.imgur.com/fMXSU9a.jpg |
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 15, 2022 15:17:01 GMT -8
Great job! It looks like you have some sort of vent above the fire, is this for secondary air? Hi Marty! Yes, there is a distance between the hearth and the secondary chamber of 1 cm. This is where the secondary air enters. Front view - distance of 10 mm. i.imgur.com/eqpVhYY.jpgRear view - 5mm gap around the port. i.imgur.com/YTKQ3gk.jpg |
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Post by martyn on Aug 15, 2022 22:37:53 GMT -8
Very interesting, so you stand the logs up vertically, do you lite the fire from the top or the bottom?
Can you show a picture with the door open?
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 15, 2022 23:04:25 GMT -8
I'm sorry, but I can't display such a picture. I'm no longer in the town where I built the stove. Yes, the logs are stacked vertically and the top 1/3 is lit and they burn at first like a candle. It is convenient to make it with a gas burner - the stove is for my elderly mother. I can attach a sketch later. i.imgur.com/E6xlMGD.jpg |
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Post by martyn on Aug 16, 2022 8:00:42 GMT -8
Thank you for the sketch, that is a very interesting method proving how versatile these stoves can be.
How have you found the stove to work, is it a total success or have you had any issues like smokey window or smokey chimney?
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 16, 2022 9:00:05 GMT -8
As I already wrote, the stove is for my elderly mother. I did my experiments with the prototype outdoors, trying to put loads on the stove that wouldn't happen in real life. Overfilled with wood, adding wood at various stages of the burning process, wood chips, pieces of rubber. I managed to smoke it - with the wood chips, I need to figure out the right basket for it. The only way to check and control, unfortunately, is to observe for the presence of smoke and smell - I don't have the equipment. There is smoke at first, about 5-10 min until the system heats up. I have planned and use a bypass during this time. The size and height of the chimney used can be seen in the video clips I have included. I have not turned on the stove in the apartment where it will be used because of the high outside temperatures at the moment - it is summer here. www.youtube.com/watch?v=F5xoD28EZ50 |
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 16, 2022 9:22:58 GMT -8
I was able to smoke the stove by loading it from scratch with wood chips and firing it up. If I add it in the phase of large red coals, in an amount of about 0.5 - 1 kg, there is no smoke and no smoking!
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Post by martyn on Aug 17, 2022 8:40:53 GMT -8
Sertus, when you next visit your mother, I for one would be very interested to find out how the stove is working, I would especially like to know how well the secondary air works and if you have every tried it without?
With my own stove, the secondary air raises the cooktop temperature from around 300c to around 330c, the afterburner goes up from 750 to 800c.
So quite a big temperature difference (about 7-10%) but the vortex flame also changes, it actually seems to look better without the secondary air!
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 17, 2022 10:36:59 GMT -8
Secondary air area is port circumference (2 x 39 mm + 2 x 156 mm) * 5 mm gap about 15% of CSA. So far in the tests I have not restricted the secondary air, although I have left the option of "open-closed". I liked the look of the fire in the hearth and the secondary, the good draft and the absence of smoke from the short chimney, although I am aware that CO is odorless and colorless. The next ignition will probably be in early October. I will take measurements with a laser pyrometer and shoot a video specifically with and without secondary air and post the result. I do not have access to specialized equipment such as TESTO. Stay healthy and inspired, martyn . |
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fuegos
Full Member
not out of the woods yet
Posts: 177
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Post by fuegos on Aug 17, 2022 11:54:23 GMT -8
Thanks for posting your results sertus very much appreciated .oh and welcome to the community.
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 17, 2022 12:24:02 GMT -8
Thanks for the welcome, fuegos! |
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sertus
New Member
Plato is dear to me, but truth is even dearer to me!
Posts: 20
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Post by sertus on Aug 17, 2022 13:10:42 GMT -8
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