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.