How to cut expences on wood for heating by 100%
Posted by admin on Oct 5, 2012 in Blog, Whats new? | 14 comments
A family in rural Azerbaijan typically will burn about 30-40kg wood three times a week to bake their precious bread in the traditional tendir outside. They will do this all through the winter. The heat from this is not trapped in the house, and is solely used for baking the bread. In the cold winter I have many times been staring at the furious fire in the tendir and thought by myself , what a tremendous waste of heat.
I just wanted to post some picture on the ongoing project in Lerik. We are making a multipurpose stove for cooking, baking and heating. The total mass will be about 2,5 tonns and max heat output is estimated to 3,5 kw. The stove is very much inspired by the “Russian rocket” builded by Alex Chernov at the Masonry Heater Associations annual meating 2012. I did not have any drawings but made the construction drawings in “scetch up” my self from scratch, just looking at the pictures available here: and I used the knowledge I had after finishing the workshop with Ekonmka. It is changed in some areas because of us having different sized bricks and also according to the customers needs. And we are using only local made bricks , local made doors, mud from the field next door etc. Total price for the materials are around 200$ !!!
The family, specially the women are all really exited because they realize the potential of heating their house almost only on the wood they would before use to bake bread, and they are also exited of the possibility of fresh bread every day, not having to leave the house and go out to the Tendir in half a meter of snow!! This family is now really looking forward to the winter, and offcource this heater was builded on our expence and the man in the picture recieve training in building it himself. Hopefully he will take this work futher in his village and make a living out of the training.
When we have tested it, that it is really burning well and working ok, I will share the drawings here for free for anyone that is interested.
PS!! Any malfunction on this construction will be my responsability. This is not an exact copy of Alex Chernov`s stove and it may perform differently.
14 Comments
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This is a great solution, efficiently using what otherwise would be “waste” heat. Would love to see plans once you’re ready to share them.
P.S. It’s also beautiful in appearance.
One concern: In the photos it appears to be located next to the refrigerator. Is there a way to move the fridge away from the heat source? Or to superinsulate it so that it does not have to work harder (consume more energy) to keep things cold?
Yes, the fridge is allready moved! Plans are on the way…
I’m gearing up for my first real bakkpaccing trips in maybe 22 years (yikes…just realized I’m frggin’ OLD), and I think the Bushwhacker with the alcohol stove accessory may be the stove I start with. I really like the looks of this.
Great work. Realy nice and functional heater. I hope that the test would go very well. I am interested in building the same heater, so the plans and drawings would be appreciated.
Vladimir
Hi
I will come with some updates on drawings and performance this weak. The door for baking nead to be air tight and this has bean a problem with the homemade doors. For the burnchamber that has more vacume and sucs air in the door this is not an issue.The drawings are in sketchup and it is a free program from google…
Hi,
First best wishes for 2013!
I was wondering of you have some test data form the heater? Is the baking door still a problem? Maybe there is not enough draw in chimney? It could be problem for me as well, since here in Macedonia is hard to find proper stove doors.
Vladimir
Hi, happy new year. I made a stronger door with stiffer metall, then I used a RTV heat resistant silicone to make a gasket, should be available everywhere in the world. Now I have no problems with the smoke, the draft is no problem with these stoves in general. The heater is working great but the coock top is a little slow beacause of the design, this is discouraging for the users.It is short and wide and heat goes quickly to the bakeoven. I have a solution to the problem that I would use for a future design. The klient is happy with coocking somewhere else. I will soon publish a new small heater that I have tested. I relly love that one, it is optimized for coocking, and can also heat a small water tank.
Hi,
It is great to hear that the problem with the oven door is solved,
I was considering this design mainly for heating and black oven, the cook top for me is not that important. Do you have the temperatures for the oven? Ideally, I would like to incorporate water pipe for central heating, is that possible with this design?
Again, thank you for sharing your work. If you have the drawings in sketch up, would be great.
This winter, I added small masonry double bells both to my existing stoves and with my brothers (brother’s stove is a “rocket” variant), and I am convinced with the efficiency of double bell design.
Regards,
Vladimir
I am working with my scetchups for publishing. I dont have temperatures on that stove. There is room for a waterunit under the baking stove in the first lower bell right under the oven, it should get sufficiently hot there. I would recomend to try a old Iron radiator. You usually can get one for frea somwhere. It is optimized for air-water heat-exchange.
Oh, by the way I have test data on the small massnory heater that I will present once the winter is over. It performes well.
I forget to ask you, do you have surface temperatures of the above heater?
The small masonry heater is very interesting (not expensive and “easy” to build). Is it quick to respond (in that case it would be ideal for weekend use).
Best regard,
Vladimir
Yes it has a fairly quick response compared to the bigger heaters, but expect aprox 1 hour, I will soon publish a heater that I personally think is better for that purpose, but it is mabe a little bit more chalenging to build…
Hi,
Thank you for the answers, Regarding the water unit I was thinking the same spot in the lower bell. The idea for old (cast) iron radiator as heat excanger is great, thank you. In meantime I started to make sketchup model of this heater, but I am not convinced that I will do it right :).
Regards,
Vladimir
Thank you for the updates. Looking forward for the results.
Best,
Vladimir