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Post by pioniers on Feb 26, 2012 10:22:56 GMT -8
Hello,
My name is Sjang van Daal, I am a dutch masonry heater builder and I am working with the rocket stoves for 6 years. I converted the rocket stove in such a way that it is usable as a normal, Finish, masonry heater. Increasingly people in Holland are interested in the rocketstove mass heater, however, and are asking me the question: How long lasts an oildrum in a rocketstove. So my question is if anyone can help me out on this one: Is there anything reasonable to say about how many burning seasons an oildrum lasts, or is it too dependent on the type of wood you burn, etc?
Thanks,
Sjang
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Post by Donkey on Feb 26, 2012 12:09:13 GMT -8
I have not heard of an oil drum that has burned out or rusted out yet. There is a stove that I know of that is over 10 years old, the barrel is still in perfect condition.
There shouldn't be enough oxygen inside to burn the barrel, nor should it ever get hot enough to melt it.. It seems to me, then, that the barrel's greatest enemy will be rust. I have noticed that they tend to rust right at the connection between the barrel and cob. Seems that stove paint or oiling the barrel (like cast iron pans) would help here a lot. Though, honestly, even if you let the things rust on their own time with no help whatsoever, they should last for a good long time.
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Post by canyon on Mar 2, 2012 23:55:30 GMT -8
I am not seeing issues with 6 inch systems but with 8 inch horizontal batch feed systems the barrel is getting too hot and warping on the top to the point that I think it won't last too many seasons. I am looking at doing a cob/brick "barrel" on the next 8 inch (with a heavy steel cooking plate on top). There is so much more intensity on the 8 inch that for serious Alaska style heating I am concerned about the longevity. 6 inchers are fine for a haul. Welcome to the boards pioniers!
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Post by pioniers on Mar 3, 2012 10:53:01 GMT -8
Thanks for your replies Donkey and Canyon, and also for the welcome. I am surprised to hear that a barrel lasts so long, but it is good to hear that there are limits. The horizontal batch system you are talking about will contain probably more wood and/or might have a shorter heatriser? The rockets I make in europe can contain up to 20 kg of wood, so I woudn't try to use an oildrum on that one.
Attached you will find an example of one of my designs.
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Post by Rinchen on Mar 12, 2012 8:02:30 GMT -8
Hello Sjang,
In the spirit of sharing, would you be able to explain on the board how you have developed your batch rockets?
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Post by ucghandyman on Oct 24, 2012 21:35:41 GMT -8
I Googled "Sjang van Daal Dutch masonry heater" & found interesting links including this one: www.heatkit.com/docs/temp/rocket%20stove.htm The base url in above link is interesting too: www.heatkit.com/Sjang is in the business of earning money from his work. He seems to be a traditional intelligent European Craftsmen. :-)
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Post by Donkey on Oct 25, 2012 7:26:53 GMT -8
I have not heard of an oil drum that has burned out or rusted out yet. There is a stove that I know of that is over 10 years old, the barrel is still in perfect condition. There shouldn't be enough oxygen inside to burn the barrel, nor should it ever get hot enough to melt it.. It seems to me, then, that the barrel's greatest enemy will be rust. I have noticed that they tend to rust right at the connection between the barrel and cob. Seems that stove paint or oiling the barrel (like cast iron pans) would help here a lot. Though, honestly, even if you let the things rust on their own time with no help whatsoever, they should last for a good long time. OK.. I've just replaced a barrel that burned through. It was in a sauna where 1) the stove was tuned to get very hot (the top would go cherry red) and 2) it was used every weekend for 3 years without fail. The owners take their sauna time seriously. They like it HOT and so their stove is regularly run to an extreme degree. So, there's one stove that has burned it's barrel. It was built in 2009. 3 years is NOT a very long time for a barrel to last. To be fair, most stoves inside a home will not experience the kind of abuse seen in the sauna. If your stove is in your home and built to be mild mannered, I stick with what I said above.
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