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Auto exhaust/muffler pipe as parts for RHM/ rocket stove?  RSS feed

 
Casey Halone
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I heard someone talking about using this stuff for a rocket stove. thinking of getting some more from the muffler shop. I got a few bits of 4", I think 3" and less is more common, but the walls are much thicker, thinking it might hold up better to the high heats as that's what it is designed for. It welds very well, and I have a basic wirefeed welder.

The way I see it, the alternative is it gets sent somewhere far off to get melted down for scrap, using more energy before it can be used for something else.

reconfiguring it would be a bit harder as it would need to be welded, but it could be tacked in a couple spots for testing.

would 4" be big enough for a heat riser if I were using a 55 gallon drum?
 
Saybian Morgan
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Location: Lower Mainland British Columbia Canada Zone 8a/ Manchester Jamaica
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Its not enough of a vacuum, I've done it but into a smaller drum, allot smaller. You can do it with forced air, but that manks with the economy of the heater. But your auto exaust system idea sounds great from a component durability salvage point of view, so it might be worth the trade off. I use the rocket mass heater design to run a drying room so I'm trying to create bleed off into a small room so I can lower the humidity. All the moist air sucks into the stove, the design of my piping coils under the deck floor so I have to force air in exchange for all the turns i had to make. If not a rmh i think those retort kilns could certainly make use off the parts, I'm not into making biochar, but I am into charring bones for potash and calcium so a nice small one could use the smaller piping from the muffler.
 
Andrew Kay
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i answered your identical question on reddit ;p
4" exhaust is massive. is it off a big truck or industrial machinery?
 
Casey Halone
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It's probably a big truck part. From a muffler shop...

So twin stacks would be ok you think?
 
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