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 plumbed 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.
To me, it doesn't look like a rocket heater that much. There's no burn tunnel, no insulated riser, just a firebox with a chimney on top and a 45 degree feed and the water jacket will cool the stove down. The thing will get hot, yes, but there will be severe growth of tar inside the chimney part. At the same time the stove will smoke like any other steel yesteryear contraption, not a rocket heater I'm afraid.
posted 4 years ago
The rocket component in the firebox is not illustrated, as I was hoping for input on whether to make it downdraft or not.
Any input you are willing to share would
By your comments I presume the main barrier to this design is the size of the heat sink? Should I only have the chimney take one pass through the tank?
posted 4 years ago
Also, I didn't illustrate it, but I planned on welding an insulative jacket around the riser section.
And if it would improve the overall performance I could move the riser outside the tank and only run it through the tank on the down side.
Timothy Luce wrote:The rocket component in the firebox is not illustrated, as I was hoping for input on whether to make it downdraft or not. Any input you are willing to share would Be appreciated. By your comments I presume the main barrier to this design is the size of the heat sink? Should I only have the chimney take one pass through the tank?
OK then. When we take the rocket component for properly done, that sloped chute won't work as intended. Mainly because the fuel will be sliding into the tunnel by itself. By doing so, the combustion will become less complete, I don't know why. It has something to do with whether the tunnel is empty or not. In order to let such a stove run best, it should be downdrafted using a verical feed, that's for sure. Tried that in different experiments, low air intake will hamper the combustion, big time.
I don't know whether the heat sink is too large or not. But I would think it's better to have the riser and tunnel heavily insulated and one single pass through the tank. Not by means of a chimney mind you, but with a number of smaller pipes like the firetubes in a steam engine. Not horizontal but vertical instead and the direction of the gas stream from top to bottom.
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