TL;DR: I made a rocket stove for the fun, by designing a concrete mould to work with a 44 gallon drum... It's not optimal (well fine as a space heater), I think the smaller steel designs seem to work faster. That may be next to build.

Due to it being winter, and my room being freezing, I've been looking at various heating methods. Although I can't really put a rocket stove in my room, I want to build one anyway, as they would appear to be really sweet, and the ability to very efficiently create heat energy focused on a stove top creates oppertunites for many fun. I'm thinking heat pumps, peltier power generation, steam generation... So, I want to have a rocket stove built by the end of the week based on the standard 44 gallon drum model. Here you can see a horizontal cross section sketch, top down sketch and a larger horizontal diagram showing preliminary dimentions:


4 Aug 14:

Got two 44 gallon drums today cos they were so affordable, A$17 each!


6 Aug 14:

Yesterday I was able to source some 190mm diameter cardboard tube for free, which will make a perfect vertical burn tube size. Today I'm drawing up the dimentions for the concrete mould, and I found out I can get a 25kg bag of high temperature cement for $40, which should hopefully be enough for the jawb.


Now to make the mould dimentions, and get it made.


So the base of the mould is 2 sheets of ply thick, then theres a bunch of stuff going on ontop of that.
All these cut offs will go on the bottom, to create an air gap for thermal insulation on the bottom.


Progress photos

PAGE 3 - 11-12 Aug 14

more photos

PAGE 4 - 13 Aug

more photos

PAGE 5 - 14 Aug

Finishing mould

PAGE 6 - 19 Aug

First Pour (Fail)

PAGE 7 - 6 Sep

Pour no. 2, success :) and first testing

PAGE 8 - with Video

Modded the feed tube to have an air channel behind the burning timber, to draw air through the burning timber, this really helped...

also I've watched a bunch of videos of peoples work on youtube, for motivation and ideas


heat exchanger design for steel rocket stove + moving the fire box (unsuccessfully)

PAGE 10 - 14 Sep

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