Re: Rocket Heaters in Skoolies
I would love to have an efficient woodstove situation in my bus. I think the nature of a rocket stove is that the flue follows along some sort of bench, etc or something with a lot of mass (ie solid clay/cob) so heat gets stored and radiates over time. I think the second half of the rocket stove is trying to keep it to run at a lower temperature, which may involve controlling/minimizing air flow and the size of the box. I do know that part of the equation is how the fuel (ie wood) is fed, through a smaller vertical shaft, shaped like a U, where the fire burns on the left side of the U and the wood slowly gets burned/pulled down on the right side of the U. I could be wrong, I've only seen a demo once.
I do know that it's common to put barrels on top of the fancy duct work (ie up and back down), which should provide a cooking surface.
There's an interesting book on "rocket mass heaters" by Ianto Evans, which may be good for a design standpoint. As for general woodstove design/DIY, there's a book "Wood Stoves: How to Make and Use Them" by Ole Wik, which goes into several varying designs. Since I've never done any before, I'd either get a used woodstove one at first, or spend several months designing and prototyping in/near my garage. The tricker part of a rocket heater is that they traditionally involve lots of brick/clay to
There is a prototype 'super efficient' stove out there called the 'Kimberly', but the owners of the company has quoted me something like $4,000 . I'd rather spend a month or two and design something myself and then share the plans online.