Highlander Anderton wrote:Upon first reading of 'the book' its obvious I have some challenges. My exhaust pipe is 12cm Diameter which is too small. ...
So I will completely rebuild the stove such that the burn chamber is correct in relation to the cross sectional area of the exhaust and that everything else relates correctly to the burn chamber.
Highlander Anderton wrote:I can, of course, cut the barrel down but I get the impression that the longer the riser the better. Is this really the case or is it only true within certain limits?
Highlander Anderton wrote:I am going to try something else though, let me know if you think this is a terrible idea but I want to add thermal mass to the heat riser itself.
Peter Berg wrote:Highlander,
The item you're missing here is the chimney stack. The stove is working as it should because it's outside. When the greenhouse is built around it, the game will change in the way that the roof of the greenhouse should be airtight, otherwise the stove wouldn't draw. Moreover, it will draw much better using a vertical stack.
Of course you should use insulation instead of sand, but it's your stove, you're entitled to make your own choices.
The vacuum cleaner is blowing a bit too powerful, I would say. Why not blowing from the top at a lower rate, you could refill without problems then. In case you would like to make a waist oil drip it's best to have something like a bunch of criss-cross large nails welded together as a bird's nest at the bottom. This way, the oil will have a large hot surface to evaporate on.
Highlander Anderton wrote:I have not seen the P-channel yet, can you provide me with a link?
Highlander Anderton wrote:Its not a rocket stove but it is quite closely related. I am renovating my house, when I bought it there was an old "drum-stove" it is a traditional design very common here which incorporates its own thermal mass. Very much like a very big heat riser (210cm tall, 70cm dia.) the fire is lit at the bottom, heat goes up the center to a second chamber at the top (gas burning chamber) and it then sinks all the way down and goes into the chimney at floor level. It was in bad condition & I demolished it & am starting from scratch. I have the original plans (dated 1898).
would you guys consider looking at the plans to see if you can suggest any modifications, using your rocket knowledge?
Highlander Anderton wrote:I also have to admit that although I have now read the p-channel threads I still really don't understand what it is, can you explain it or give me a link that explains it to a novice like myself?