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Post by midevilone on Aug 18, 2014 19:09:18 GMT -8
I am designing a water jacket rocket stove that will have a 330 gallon (yard sized) LP tank standing on end as the water jacket with the rocket stove chimney running right through the middle of it, this will be connected in parallel with two additional 250 gallon tanks for heat storage. An essential part of this design is a gravity fed fuel (log) chute. I'd like your take on the design, overall, and specifically whether I should downdraft the firebox or not. For those of you on low bandwidth, sorry for the huge image, but it was necessary to show the detail. Hit me with your feedback. See the design here: Rocket stove v1.0- by firekeep, on Flickr
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Post by satamax on Aug 18, 2014 22:20:46 GMT -8
Sorry, you haven't understood what the rocket burner is yet! Go back to the research stage, and buy the Ianto Evans book!
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Post by Daryl on Aug 19, 2014 1:42:10 GMT -8
I have seen a mini-jacket in use with a basic rocket stove, not an rmh. It is an interesting concept.
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Post by DCish on Aug 19, 2014 2:42:26 GMT -8
I believe satamax is referring to the core idea that a rocket stove insulates the burn area and does not begin heat harvest until after combustion is complete... essential to achieving the higher burn temps that make complete combustion happen.
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Post by midevilone on Aug 21, 2014 19:55:45 GMT -8
Maybe my post wasn't clear on what my main question was given the rough sketch. The rocket aspect will depend on whether I do downdraft or not. I am hoping for input on that aspect. Also I did not illustrate It, but I had planned on insulating the riser. However, now I am thinking I will send the (insulated) riser up outside of the water jacket and then turn it down, through the water jacket.
The whole point of forums is to share knowledge in a wide sphere, wider than from a single perspective (book).
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Post by satamax on Aug 21, 2014 22:29:53 GMT -8
Mate, Peter replied to you at permies.
What i will say, build a simple garden experiment J tube rocket. Then another one and again. When you have the hang of how they work, you will be able to design such a thing. For the moment, it's just a pile of flaws. Not a rocket. Sorry to be harsh, but we get stuff like this all the time, often saying, check this, i've picked this up from youtube! And it's a pile of crap!
Have you read the book?
Because the downdraft isn't what makes a rocket. A L shape rocket doesn't downdrafts.
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Post by Daryl on Aug 22, 2014 10:09:24 GMT -8
Get out to your backyard and start playing with fire...be safe, of course! Even with my little ugly rocket stoves, ovens, and tin cans I have learned so much about the behavior of fire. What will work and what won't. Another suggestion is to start reading up on physics. (Don't worry, I won't mention the V word.) A lot of people come off the youtube and want to build a "swiss army knife" stove that will do everything including fetch a beer from the fridge. Physics helps to explain what is possible. Have a good day!
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Post by pinhead on Sept 18, 2014 7:42:14 GMT -8
That is definitely not how I'd make the heat exchanger. And the "slant feed" joining with a firebox most definitely won't perform like a rocket heater/stove. This would be a better way to do it. Just weld the barrel/barrels on top of each other, than inside the propane tank. The tank assembly would simply replace the "conventional" barrel. This maintains the temperature differential between the well-insulated heat riser and the downdraft portion of the heat exchanger.
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